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Schweitzer Engineering Laboratories SEL-300G Instruction Manual

Schweitzer Engineering Laboratories SEL-300G Instruction Manual

Multifunction generator relay

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SEL-300G

Multifunction Generator

Relay

Instruction Manual

20060731

*PM300G-01-NB*

Table of Contents

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Page 1 SEL-300G Multifunction Generator Relay Instruction Manual 20060731 *PM300G-01-NB*...
Page 2 Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without limitation software, firmware, and documentation. The information in this manual is provided for informational use only and is subject to change without notice. Schweitzer Engineering Laboratories, Inc. has approved only the English language manual.
Page 3 Appendix D: Configuration, Fast Meter, and Fast Operate Commands Appendix E: Compressed ASCII Commands Appendix F: Modbus RTU Communications Protocol Appendix G: QuickSet SEL-5030 Software ERATOR Appendix H: Differential Connection Diagrams SECTION 15: SEL-300G RELAY COMMAND SUMMARY Date Code 20060731 Table of Contents SEL-300G Instruction Manual...
Page 5: Table Of Contents
Figure 1.2: Generator Differential Zone May Include Transformer ............1-7 Figure 1.3: Simple Protection for Resistance Grounded Generators ............1-7 Figure 1.4: Generator Thermal Protection With SEL-2600 Series RTD Module and SEL-300G ..1-8 Figure 1.5: Field Ground Protection With the SEL-300G Relay............1-9 Figure 1.6: SEL-300G Relay Communication Connection Examples..........1-12...
Page 7: Introduction And Specifications
This instruction manual covers the SEL-300G Relay family. This manual contains the information you need to select, set, install, test, operate, and maintain any SEL-300G Relay. You probably will not need to review the whole book to perform the specific tasks for which you are responsible.
Page 8: Instruction Manual Sections Overview
OGIC and serial port settings. The Settings Sheets are single-sided and can be photocopied and filled out to set the SEL-300G. Note that these sheets correspond to the serial port SET commands listed in Table 6.1. Section 7: Relay Commissioning describes: •...
Page 9 Appendix G: QuickSet SEL-5030 Software ERATOR • Appendix H: Differential Connection Diagrams SEL-300G Relay Command Summary briefly describes the serial port commands that are described in detail in Section 10: Serial Port Communications and Commands. SEL-300G Instruction Manual Date Code 20060731...
Page 10: Typographic Conventions
Position: RETURN • Sections of this instruction manual are shown in bold italics: Section 1: Introduction and Specifications. SEL-300G R ELAY ODELS This instruction manual covers the following SEL-300G models: Table 1.2: SEL-300G Relay Models ® Synch- Differential SEL-2600 Series Modbus...
Page 11: Table 1.3: Sel-300G Relay Hardware Models
The model numbers in Table 1.2 and Table 1.3 are only part of the actual ordering number— enough to distinguish one model type from another. To obtain the appropriate relay ordering number, see the latest SEL-300G Model Option Table at www.selinc.com, under SEL Literature, Ordering Information (Model Option Table).
Page 12: Sel-300G Relay Protection Applications
PPLICATIONS Complete Generator Primary Protection When ordered with the optional differential elements, the SEL-300G provides a full complement of primary protection elements for large machines. The relay is built on the field-proven SEL-300 Series Relay platform, known for secure, dependable, high-performance protection.
Page 13: Feature-Rich Generator Backup Protection
With or without the differential elements, you get large-machine protection, monitoring, and control that is priced for application on nearly any size machine. The SEL-300G offers you the freedom to benefit from integrated protection, SER and event reporting, high-accuracy metering, and breaker and dc monitoring functions without the installation and maintenance expense of purchasing those components individually.
Page 14: Solidly Grounded Machine Protection
Introduction and Specifications Solidly Grounded Machine Protection The SEL-300G is suitable to protect solidly grounded machines, with the exception that the relay does not provide 100 percent stator ground fault protection for these machines. Phase, negative- sequence, and neutral overcurrent fault detection methods, plus optional differential overcurrent protection, are provided.
Page 15: Table 1.4: Sel-300G Requirements For Field Ground Protection Functionality
SEL-300G R ELAY ENERATOR ROTECTION EATURES The SEL-300G offers a full range of elements for generator protection, such as: • Optional Percentage Restrained Differential Protection (included in SEL-0300G1 and SEL-0300G3 models) • Optional 87N Ground Differential Protection (included in SEL-0300G0 and SEL-0300G2 models) •...
Page 16: Sel-300G Relay Additional Features
Out-of-Step Protection (single and double blinder schemes) • Thermal Protection (included in models compatible with SEL-2600 Series RTD Module). • Field Ground Protection (optional when an SEL-300G Relay is used in combination with an SEL-2664 Field Ground Module). SEL-300G R ELAY...
Page 17: Power Supply And Optoisolated Input Dc Voltages
High Current Interrupting Output Contacts SEL-300G purchased with the additional I/O board may be further specified to include high current interrupting output contacts. These contacts use an integrated-gate bipolar junction transistor to interrupt contact current in a controlled manner. This increases the contact interrupt rating, prevents contact arcing, and prevents the inductive voltage spike which occurs when an inductive current is interrupted by a standard contact.
Page 18: Serial Communication Connections (Typical)
SEL-300G Relay (#1) or . . . Front Panel Front Panel Connect to the SEL-300G PORT F PORT F Relays individually via the Front-Panel Serial Port DWG: M300G031a Figure 1.6: SEL-300G Relay Communication Connection Examples Date Code 20060731 SEL-300G Instruction Manual...
Page 19: Sel-5801 Cable Selector Software
300 V continuous, V synch voltage input. 250 V 0.20 A L/R = 40 ms S–NS 365 Vac for 10 seconds. Burden: 0.13 VA @ 67 V 0.45 VA @ 120 V 0.80 VA @ 300 V SEL-300G Instruction Manual Date Code 20060731...
Page 20 Level 1,2,3,4 Relay time is synchronized to within ±5 ms of time-source IEEE C37.90.3-2001 Severity: 2, 4, 8 kV input. Contact: 4, 8, 15 kV air Dimensions: See Figure 5.1 for exact relay dimensions. Date Code 20060731 SEL-300G Instruction Manual...
Page 21: Processing Specifications
Pickup Time: 25 ms at 60 Hz (Max) Accuracy: ± 5%, ± 0.1 V Definite-Time Maximum Percentage Pickup Range: 0.00–400.00 s Voltage Difference: 1.0–15.0% Time-Delay Accuracy: ± 0.1%, ± 4.2 ms at 60 Hz (Max) SEL-300G Instruction Manual Date Code 20060731...
Page 22 Time Dials: US: 0.5–15.0, 0.01 steps Inverse-Time 2%–100% of generator rated IEC: 0.05–1.00, 0.01 steps Neg.-Seq. I Pickup: secondary current Timing: ± 4%, ± 25 ms for |I| between 2 and 20 multiples of pickup Date Code 20060731 SEL-300G Instruction Manual...
Page 23 1 A Model: ± 0.02 A, ± 5% Definite-Time Delay: 0.0–99.0 s ≤7.5 TAP Range: /TAP Maximum Definite-Time 5 A Model: 0.5–160.0 A secondary Delay Accuracy: ± 0.5% ± 5 ms 1 A Model: 0.1–32.0 A secondary SEL-300G Instruction Manual Date Code 20060731...
Page 24 Maximum Definite-Time Delay Accuracy: ± 0.1%, ± 4.2 ms Control Equation Variable Timers: OGIC 16 Time-Delay Pickup and Dropout Timers: 0.00–3000.00 s Maximum Definite-Time Delay Accuracy: ± 0.1%, ± 4.2 ms at 60 Hz Date Code 20060731 SEL-300G Instruction Manual...
Page 25 Neutral Overcurrent Setting Calculation ................2-48 Element Operating Characteristics ..................2-50 Time-Overcurrent Curves ......................2-55 Voltage-Controlled/Restrained Time-Overcurrent Elements .............2-58 Element Description......................2-58 Voltage-Controlled and Voltage-Restrained Time-Overcurrent Setting Calculation..2-60 Element Operating Characteristics ..................2-62 Over/Under Voltage Elements....................2-64 Element Description......................2-64 Voltage Element Setting Calculation..................2-66 SEL-300G Instruction Manual Date Code 20060731...
Page 26 Table 2.5: RTD Resistance vs. Temperature ..................2-106 FIGURES Figure 2.1: Relay Processing Order ......................2-1 Figure 2.2: SEL-300G Relay Setting Categories ..................2-3 Figure 2.3: PTRN, CTRN Setting Examples ..................2-7 Figure 2.4: Phase Rotation Settings ......................2-10 Figure 2.5: Distance Element Operating Characteristics ..............2-18 Figure 2.6: Zone 1 Mho Element Logic....................2-18...
Page 27 Figure 2.52: Double Blinder Scheme Logic Diagram................2-87 Figure 2.53: Double Blinder Typical Settings ..................2-91 Figure 2.54: Frequency Element Voltage Supervision Logic ..............2-94 Figure 2.55: Frequency Element Logic....................2-95 Figure 2.56: Example Turbine Operating Limitations During Abnormal Frequency ......2-99 SEL-300G Instruction Manual Date Code 20060731...
Page 28 Relay Element Settings Figure 2.57: Abnormal Frequency Protection Logic Diagram .............2-100 Figure 2.58: Winding RTD Trip Characteristics with BLMT = 2.00...........2-105 Figure 2.59: Pole Open Logic Diagram ....................2-108 Date Code 20060731 SEL-300G Instruction Manual...
Page 29: Relay Element Settings
The SEL-300G tracks the frequency of the ac voltage. The relay adjusts the sampling rate to the present system frequency (in the range from 20 to 70 Hz) and takes 16 digital samples of the analog signals every cycle.
Page 30: Element Processing
Event report and SER record storage • Responding to serial port and front-panel commands ELAY ETTINGS VERVIEW You configure the SEL-300G generator protection and monitoring functions by entering settings in three categories, described by Figure 2.2. Date Code 20060731 SEL-300G Instruction Manual...
Page 31 SET R, SHOWSET R SER1 - SER4 Settings ALIAS Settings DWG: M300G040 Figure 2.2: SEL-300G Relay Setting Categories The relay is equipped with two protection element setting groups, Group 1 and Group 2. Group 1 and Group 2 contain: •...
Page 32: Protection Element Selection Guidelines
ROTECTION LEMENT ELECTION UIDELINES The SEL-300G provides protection elements suitable for applications protecting many different generators. Use Table 2.1 to help select the protection elements to enable for specific applications. Table 2.1: Recommended Protection Elements by Generator Grounding Method High-...
Page 33: Relay Configuration Settings
ONFIGURATION ETTINGS The SEL-300G provides several settings that configure the relay for the particular generator being protected. These settings appear in Group settings or in the Global settings. Note: All relay settings are made in secondary quantities (amps, volts, ohms, or watts).
Page 34 PTR. In a typical 13.8 kV generator application, when PTR = 120, VNOM = 115. The relay volts/hertz, voltage-restrained overcurrent, and directional power elements use the VNOM setting. Nominal Machine Current (1.0–10.0 A; 5 A Models) INOM = 5.0 (0.2–2.0 A; 1 A Models) Date Code 20060731 SEL-300G Instruction Manual...
Page 35 CTRN = CT Ratio to 1 Grounding PTRN = a Transformer Generator SEL-300G Relay (partial) CTRN = CT Ratio to 1 Grounding PTRN = 2 • a Transformer Optional Auxiliary Transformer DWG: M300G041 Figure 2.3: PTRN, CTRN Setting Examples SEL-300G Instruction Manual Date Code 20060731...
Page 36 The relay demand metering function can use thermal (THM) or rolling average (ROL) demand calculation types. These options and other settings associated with the demand metering function are described in Section 3: Auxiliary Function Settings . Date Code 20060731 SEL-300G Instruction Manual...
Page 37: Global Configuration Setting Descriptions (Set G)
Length of Prefault in Event Report (1 to LER-1 cycles) PRE = 4 The LER and PRE settings configure the full-length event reports that the SEL-300G saves. The LER setting defines the event report length in cycles. When you set LER = 15, the relay saves 29 event reports that are each 15 cycles long.
Page 38 Each optoisolated input is equipped with an internal time-delay pickup timer. These timers serve as settable debounce or recognition delay timers. Application and setting selections for these timers is described in Section 3: Auxiliary Function Settings . Date Code 20060731 SEL-300G Instruction Manual...
Page 39: Distance Elements
Element Description Functional Description The SEL-300G provides a two-zone distance element designed for backup distance protection for system phase-to-phase and three-phase faults. Each zone is equipped with independently settable forward reach, reverse offset, maximum torque angle, step-up transformer compensation, and definite-time delay.
Page 40 The Z2O setting defines the Zone 2 element offset. When an SEL-300G0 or SEL-300G2 Relay is applied with current transformers as shown in Figure 5.17 or Figure 5.18, you may wish to apply a positive offset equal to the generator impedance as backup generator fault protection. Date Code 20060731 SEL-300G Instruction Manual...
Page 41 Time-Delayed Zone 1 Phase Mho Distance Indication, Testing, Tripping Element Pickup Instantaneous Zone 2 Phase Mho Distance Indication, Testing, SER, 21P2P Element Pickup Event Triggering Time-Delayed Zone 2 Phase Mho Distance Indication, Testing, Tripping 21P2T Element Pickup SEL-300G Instruction Manual Date Code 20060731...
Page 42 Figure 5.17 or Figure 5.18, you may wish to apply a positive offset equal to the generator impedance as backup generator three-phase fault protection. Zone 2 Compensator Time Delay (0.00 to 400.00 s) Z2CD = 0.00 The Z2CD setting defines the Zone 2 element definite-time delay. Date Code 20060731 SEL-300G Instruction Manual...
Page 43 Event Triggering 21C2P Instantaneous Zone 2 Phase-Phase or Three- Indication, Testing, SER, Phase Compensator Distance Element Event Triggering Pickup Time-Delayed Zone 2 Phase-Phase or Three- Indication, Testing, Tripping 21C2T Phase Compensator Distance Element Pickup SEL-300G Instruction Manual Date Code 20060731...
Page 44: Setting Calculation
This operating contingency review shows with which relays the Zone 2 element time delay must coordinate. Zone 1 is usually set shorter than Zone 2, with a corresponding shorter time delay. Date Code 20060731 SEL-300G Instruction Manual...
Page 45 Due to the long reach setting, many phase distance relays would pick up during heavy load. The SEL-300G distance elements are supervised by a simple load encroachment function (when enabled) that prevents distance element misoperation under heavy load. To...
Page 46: Element Operating Characteristics
Settings MTA1 mBC1 Logic Similar to mAB1 mCA1 Logic Similar to mAB1 = CT Rating, 1A or 5A Zone 2 Logic Similar to Zone 1 DWG: M300G230a Figure 2.6: Zone 1 Mho Element Logic Date Code 20060731 SEL-300G Instruction Manual...
Page 47 21P2P 21P2T ZLOAD DWG: M300G231a Figure 2.7: Mho Distance Element Logic |Z1| Relay Word VNOM Bits ⋅ ⋅ MXLD INOM Acos(MPF) ZLOAD |ang(Z1)| MPF = OFF 0.125 DWG: M300G254 Figure 2.8: Load Encroachment Logic SEL-300G Instruction Manual Date Code 20060731...
Page 48 DWG: M300G255 Figure 2.9: Zone 1 Compensator Element Logic Relay Word Bits MABC1P OGIC Setting 21C1P 21CTC MPP1P From above: Z1CD 21C1T MABC2P 21C2P MPP2P Z2CD 21C2T DWG: M300G256 Figure 2.10: Compensator Distance Element Logic Date Code 20060731 SEL-300G Instruction Manual...
Page 49: Volts/Hertz Element
Overexcitation occurs when a generator or transformer magnetic core becomes saturated. When this happens, stray flux is induced in nonlaminated components, causing overheating. In the SEL-300G Relay, overexcitation is detected by a volts/hertz element. The SEL-300G provides a sensitive definite-time volts/hertz element, plus a tripping element with a composite operating time.
Page 50 Level 2 Time-Delay Two (0.00–400.00 s) 24D2D2 = 6.00 The SEL-300G asserts the 24C2 Relay Word bit without time delay when the machine volts/hertz exceed either the 24D2P1 or 24D2P2 setting. If the volts/hertz percentage is greater than the 24D2P1 setting, but less than the 24D2P2 setting, the relay asserts the 24C2T Relay Word bit in 24D2D1 seconds.
Page 51: Setting Calculation
The 24IP setting defines the pickup point of the inverse-time portion of the operating time curve. The SEL-300G asserts the 24C2 Relay Word bit without time delay when the machine volts/hertz exceed the 24IP setting. The 24IC setting defines the curve shape.
Page 52: Element Operating Characteristics
Protection Figure 4.5.4-1 and Figure 4.5.4-2 . 24D2P2=118% 24D2D2=6 s Mfg-Generator Limit Curve 24D2P1=110% 24D2D1=60 s Transformer Limit Curve on Gen. Voltage Base 1000 Time (Minutes) DWG: M300G043 Figure 2.11: Dual-Level Volts/Hertz Time-Delay Characteristic, 24CCS = DD Date Code 20060731 SEL-300G Instruction Manual...
Page 53 2-25 Transformer Limit Curve on Generator Voltage Base Generator Manufacturer's Recommended Protection Curve 24D2P2=118% 24D2D2=1.2 s Relay Characteristic 24IP=108% .001 1000 Time (Minutes) DWG: M300G044 Figure 2.12: Composite Inverse/Definite-Time Overexcitation Characteristic, 24CCS = ID SEL-300G Instruction Manual Date Code 20060731...
Page 54 ⎞ ⎛ ⎞ FNOM ⎜ ⎟ ⎜ ⎜ ⎟ ⎟ • ⎜ ⎟ freq VNOM ⎝ ⎠ − ⎜ ⎟ ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ Figure 2.13: Volts/Hertz Inverse-Time Characteristic, 24IC = 0.5 Date Code 20060731 SEL-300G Instruction Manual...
Page 55 ⎞ FNOM ⎜ ⎟ ⎜ ⎜ ⎟ ⎟ • ⎜ ⎟ freq VNOM ⎝ ⎠ − ⎜ ⎟ 24IP ⎜ ⎟ ⎜ ⎟ 100% ⎝ ⎠ Figure 2.14: Volts/Hertz Inverse-Time Characteristic, 24IC = 1 SEL-300G Instruction Manual Date Code 20060731...
Page 56 ⎞ FNOM ⎜ ⎟ ⎜ ⎜ ⎟ ⎟ • ⎜ ⎟ freq VNOM ⎝ ⎠ − ⎜ ⎟ 24IP ⎜ ⎟ ⎜ ⎟ 100% ⎝ ⎠ Figure 2.15: Volts/Hertz Inverse-Time Characteristics, 24IC = 2 Date Code 20060731 SEL-300G Instruction Manual...
Page 57: Reverse/Low-Forward Power Element
In applications of other prime movers, motoring can cause mechanical damage and/or unsafe operating conditions. Antimotoring protection in the SEL-300G is provided by a reverse/low-forward power element. This element measures the real-power flow from the generator. If the generator real-power output drops below the element threshold, the relay asserts the Relay Word bit associated with the instantaneous threshold and starts the element definite timer.
Page 58 Tripping, SER Triggering, With Definite-Time Delay Pickup Definite-Time Delay 32P2 Level 2 Reverse/Low-Forward Power Pickup Indication, Event Triggering, SER Triggering, Testing 32P2T Level 2 Reverse/Low-Forward Power Pickup Tripping, SER Triggering, With Definite-Time Delay Pickup Definite-Time Delay Date Code 20060731 SEL-300G Instruction Manual...
Page 59: Setting Calculation
For antimotoring protection, reverse and low-forward power elements are used to trip the main generator breaker and the field breaker and transfer auxiliaries, if needed. Refer to Section 4: Control Equations for more detail and examples of tripping SEL control OGIC OGIC equations. SEL-300G Instruction Manual Date Code 20060731...
Page 60: Element Operating Characteristics
OGIC Switches Closed when Relay Settings 32PTC = Logical 1 Word 32PTC Bits 32P1 Measured 32P1D Real Power 32P1T Settings 32P1P 32P2 32P2D 32P2T 32P2P DWG: M300G056b Figure 2.18: Reverse/Low-Forward Power Element Logic Diagram Date Code 20060731 SEL-300G Instruction Manual...
Page 61: Loss-Of-Field Element
High currents are induced in the rotor and stator current as high as 2.0 per unit is possible. These high currents cause dangerous overheating in a very short time. The SEL-300G detects loss-of-field using a pair of offset mho circles. Since loss-of-field affects all three phases, the condition is a balanced one. The SEL-300G uses measured positive- sequence impedance to form the mho circles.
Page 62 Zone 2 mho circle defined by the offset and diameter settings, and below the directional supervision line, if used. The 40Z2T Relay Word bit asserts 40Z2D seconds after 40Z2 asserts. 40Z Element Torque Control (SEL control equation): 40ZTC = !60LOP OGIC Date Code 20060731 SEL-300G Instruction Manual...
Page 63: Setting Calculation
Loss-of-Field Protection Using a Negative Offset Zone 2 When setting Zone 2 with a negative offset, set the Zone 1 diameter equal to 1.0 per unit impedance. VNOM 40Z1P = Ω 1.73 • INOM SEL-300G Instruction Manual Date Code 20060731...
Page 64 Traditionally, the Zone 1 delay for this type of scheme is 0.25 seconds. 40Z1D = 0.25 second Set the Zone 2 diameter using the direct axis reactance and XS, the sum of the step-up transformer reactance XT and system reactance Xsys. Date Code 20060731 SEL-300G Instruction Manual...
Page 65 Zone 1 and Zone 2 conditions discussed above, to cause generator breaker and field breaker tripping. See Section 4: SEL Control Equations for additional information on relay OGIC tripping logic and detailed setting examples. SEL-300G Instruction Manual Date Code 20060731...
Page 66: Element Operating Characteristics
2-38 Relay Element Settings Element Operating Characteristics X ′ − Zone 1 40Z1P = 40Z2P = Zone 2 DWG: M300G047a Figure 2.20: Loss-of-Field Element Operating Characteristic, Negative Zone 2 Offset Date Code 20060731 SEL-300G Instruction Manual...
Page 67: Negative-Sequence Overcurrent Elements
The standard defines a continuous withstand capability as well as a short-time capability, expressed in terms of The SEL-300G provides a negative-sequence definite-time overcurrent element suitable for unbalance alarm application and an t time-overcurrent element for unbalance current tripping.
Page 68 Indication, Event Triggering, Definite-Time Delay SER Triggering Level 2 Neg.-Seq. Time-O/C Pickup Indication, Event Triggering, 46Q2 SER Triggering, Testing Level 2 Neg.-Seq. Time-O/C Trip Tripping, SER Triggering 46Q2T 46Q2R Level 2 Neg.-Seq. Time-O/C Reset Testing Date Code 20060731 SEL-300G Instruction Manual...
Page 69: Setting Calculation
Negative-sequence overcurrent tripping generally is applied to the generator main breaker only. This permits rapid resynchronization after the system unbalance condition is cleared. Refer to Section 4: SEL Control Equations for more detail and examples of tripping SEL OGIC OGIC control equations. SEL-300G Instruction Manual Date Code 20060731...
Page 70: Element Operating Characteristics
Setting Torque Control 46QTC Relay |I2| percent Word Bits 46Q1 Setting 46Q1D 46Q1T 46Q1P 46Q2 46Q2 46Q2P Negative- 46Q2T Sequence Time- 46Q2R Overcurrent 46Q2K Element DWG: M300G058 Figure 2.22: Negative-Sequence Overcurrent Element Logic Diagram Date Code 20060731 SEL-300G Instruction Manual...
Page 71 2-43 10000 1000 46Q2K = 100 46Q2P minimum = 2% 0.01 100% 1000% 10000% I2 (percent of INOM) DWG: M300G150 seconds ⎛ ⎞ ⎜ ⎟ INOM ⎝ ⎠ Figure 2.23: Negative-Sequence Time-Overcurrent Operating Characteristic SEL-300G Instruction Manual Date Code 20060731...
Page 72: Overcurrent Elements
Relay Element Settings VERCURRENT LEMENTS Element Description Functional Description The SEL-300G offers an assortment of nondedicated overcurrent elements for protection, indication, and control functions. Overcurrent Protection, All Relay Models All relay models provide the following overcurrent elements: • Two levels of phase definite-time overcurrent, 50P1 and 50P2 •...
Page 73 Level 2 Neutral Ground O/C Time Delay (0.00–400.00 s) 50N2D = 30.00 Level 1 Residual Ground O/C Pickup (OFF, 0.25–100.00 A) 50G1P = 8.00 Level 1 Residual Ground O/C Time Delay (0.00–400.00 s) 50G1D = 30.00 SEL-300G Instruction Manual Date Code 20060731...
Page 74 Neutral Time-O/C EM Reset (Y, N) 51NRS = Y 51N Torque-Control Setting 51NTC = 1 Residual Time-Overcurrent Settings Residual Time-O/C Pickup (OFF, 0.5–16.0 A) 51GP = 8.0 Residual Time-O/C Curve (U1–U5, C1–C5) 51GC = U2 Date Code 20060731 SEL-300G Instruction Manual...
Page 75 51G Torque-Control Setting 51GTC = 1 The SEL-300G provides inverse-time overcurrent elements for neutral and residual current. Each of the elements includes a settable pickup, curve shape, and time-dial. Ten curve shapes are available. Curves U1–U5 emulate the popular North American induction disk relays.
Page 76: Neutral Overcurrent Setting Calculation
Neutral Overcurrent Setting Calculation Information Needed • Generator terminal ground fault current, In, A primary • Generator grounding transformer ratio to 1 (in high-impedance grounded protection applications) • Neutral CT transformer ratio to 1 Date Code 20060731 SEL-300G Instruction Manual...
Page 77 A 50N1P setting of four to five times the 51NP setting will reduce the 50N1P element sensitivity to system ground faults, while still providing detection of ground faults high in the stator winding. SEL-300G Instruction Manual Date Code 20060731...
Page 78: Element Operating Characteristics
Figure 2.24 and Figure 2.25 show pickup and reset time curves applicable to all instantaneous overcurrent elements in the SEL-300G Relay. These times do not include output contact operating time and are accurate for determining element operation time for use in internal control equations.
Page 79 Relay Element Settings 2-51 Maximum Minimum Applied Current (Multiples of Pickup Setting) Figure 2.25: Instantaneous Overcurrent Element Reset Time Curve SEL-300G Instruction Manual Date Code 20060731...
Page 80 50P1D 50P1P 50P1T 50P2 50P2D 50P2P 50P2T |IN| 50N1 50N1D 50N1T 50N1P 50N2 50N2D 50N2P 50N2T |IG| 50G1 50G1D 50G1T 50G1P 50G2 50G2D 50G2P 50G2T DWG: M300G059 Figure 2.26: Definite-Time Overcurrent Element Logic Diagram Date Code 20060731 SEL-300G Instruction Manual...
Page 81 50H2T 50H2PB 50H2 |IC87| 50H2C 50H2PC |I287| 50Q1 50Q1D 50Q1P 50Q1T 50Q2 50Q2D 50Q2P 50Q2T |IR87| 50R1 50R1D 50R1P 50R1T 50R2 50R2D 50R2P 50R2T DWG: M300G060 Figure 2.27: 87-Input Definite-Time Overcurrent Element Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 82 Time Dial Reset 51GRS Electromechanical Reset? (Y/N) Setting 51GTC Torque Control 51GRS= Reset Timing State Switch Position Logical 1 Closed Electromechanical 1 Cycle Logical 0 Open DWG: M300G051 Figure 2.29: Residual Ground Time-Overcurrent Element 51GT Date Code 20060731 SEL-300G Instruction Manual...
Page 83: Time-Overcurrent Curves
⎜ ⎟ ⎜ ⎟ 0.02 − 0.04 − ⎝ ⎠ ⎝ ⎠ ⎛ ⎞ ⎛ ⎞ 0.323 4.85 ⎜ ⎟ ⎜ ⎟ • • ⎜ ⎟ ⎜ ⎟ − − ⎝ ⎠ ⎝ ⎠ SEL-300G Instruction Manual Date Code 20060731...
Page 84 5 6 7 8 9 .5 .6 .7 .8 .9 5 6 7 8 9 Multiples of Multiples of Pickup Pickup Figure 2.32: U.S. Very Inverse Curve: U3 Figure 2.33: U.S. Extremely Inverse Curve: U4 Date Code 20060731 SEL-300G Instruction Manual...
Page 85 .5 .6 .7 .8 .9 5 6 7 8 9 Multiples of Multiples of Pickup Pickup Figure 2.36: I.E.C. Class B Curve (Very Figure 2.37: I.E.C. Class C Curve Inverse): C2 (Extremely Inverse): C3 SEL-300G Instruction Manual Date Code 20060731...
Page 86: Voltage-Controlled/Restrained Time-Overcurrent Elements
Element Description Functional Description The SEL-300G provides a voltage-restrained phase time-overcurrent element and a voltage-controlled phase time-overcurrent element. One of these elements typically is used for system phase fault backup protection to trip the generator in the event of an uncleared phase fault on the system side of the step-up transformer.
Page 87 51VC = U2 Voltage-Restrained Time-O/C Time-Dial (0.50–15.00, U curves) 51VTD = 3.00 (0.05–1.00, C curves) Voltage-Restrained Time-O/C EM Reset (Y, N) 51VRS = Y 51V Torque-Control Setting (SEL control equation) 51VTC = !60LOP OGIC SEL-300G Instruction Manual Date Code 20060731...
Page 88: Voltage-Controlled And Voltage-Restrained Time-Overcurrent Setting Calculation
2-60 Relay Element Settings For system backup protection, the SEL-300G provides a choice of voltage-controlled or voltage-restrained phase inverse-time overcurrent elements or phase distance elements (discussed earlier in this section). The overcurrent elements include a settable pickup, curve shape, and time-dial. Ten curve shapes are available. Curves U1–U5 emulate the popular North American induction disk relays.
Page 89 When using the 51V element, set the 51VP pickup setting greater than the maximum generator phase current expected under full voltage, nonfault conditions. Divide this current by the phase current transformer ratio, CTR, to find the element pickup current in secondary amps. load current 51VP > amps SEL-300G Instruction Manual Date Code 20060731...
Page 90: Element Operating Characteristics
51CTC Reset 51CRS Electromechanical Reset? (Y/N) Setting 51CTC Torque Control 51CRS= Reset Timing State Switch Position Logical 1 Closed Electromechanical Logical 0 Open 1 Cycle DWG: M300G049 Figure 2.40: Voltage-Controlled Phase Time-Overcurrent Element 51CT Date Code 20060731 SEL-300G Instruction Manual...
Page 91 Open DWG: M300G070a Figure 2.41: Voltage-Restrained Phase Time-Overcurrent Element 51VT 1.00 0.50 0.25 0.125 0.125 0.25 0.50 1.00 Selected Phase-Phase Voltage DWG: M300G152a (per unit of VNOM) Figure 2.42: 51V Element Voltage Restraint Characteristic SEL-300G Instruction Manual Date Code 20060731...
Page 92: Over/Under Voltage Elements
NDER OLTAGE LEMENTS Element Description Functional Description The SEL-300G offers the following over- and undervoltage elements for protection, indication, and control functions. • Two levels of phase undervoltage, 27P1 and 27P2 • Two levels of phase-to-phase undervoltage, 27PP1 and 27PP2 •...
Page 93 Level 2 Residual Overvoltage Pickup Indication, Control Negative-Sequence Overvoltage Pickup Indication, Control 59V1 Positive-Sequence Overvoltage Pickup Indication, Control 59PP1 Level 1 Phase-to-Phase Overvoltage Pickup Indication, Control 59PP2 Level 2 Phase-to-Phase Overvoltage Pickup Indication, Control SEL-300G Instruction Manual Date Code 20060731...
Page 94: Voltage Element Setting Calculation
Calculation PHROT |VPP| (minimum phase- to phase voltage magnitude) Relay |VP| Word Setting Bits 27P1P 27P1 27P2P 27P2 |VPP| 27PP1 27PP1 27PP2 27PP2 |V1| 27V1 27V1P DWG: M300G052 Figure 2.43: Undervoltage Element Logic Diagram Date Code 20060731 SEL-300G Instruction Manual...
Page 95 Calculation Relay Word |VP| Bits Setting 59P1P 59P1 59P2P 59P2 |VPP| 59PP1 59PP1 59PP2 59PP2 |VG| 59G1P 59G1 59G2P 59G2 |V1| 59V1 59V1P |V2| 59QP DWG: M300G053 Figure 2.44: Overvoltage Element Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 96: Loss-Of-Potential (60Lop) Protection
ROTECTION Element Description Functional Description The SEL-300G provides an easy method to detect loss of relaying potential caused by blown potential fuses or operation of molded case circuit breakers in the potential circuit secondary. The relay declares a loss-of-potential if: •...
Page 97 Relay Element Settings 2-69 generator rated line-neutral voltage. The SEL-300G asserts the 64G1 Relay Word bit when neutral voltage is greater than the 64G1P setting. This function detects stator ground faults in all but the bottom 5–10 percent of the generator winding.
Page 98 SEL application guide Setting 100% Stator Ground Fault Detection Elements in the SEL-300G Relay , available on the SEL website. The Zone 2 stator ground element also may be applied as a neutral third-harmonic undervoltage element.
Page 99: Loss-Of-Potential Supervision
If the potential transformers are lost, the 64G2 element will operate and cause an unnecessary trip unless the element is supervised by the loss-of-potential detection logic of the SEL-300G relay. This supervision can be implemented as shown below.
Page 100 Element Setting Worksheet , which is available on the SEL Internet home page at www.selinc.com or by contacting the factory. 1. Operate the generator at no load. Using the SEL-300G METER command, record the values of terminal and neutral third-harmonic voltage.
Page 101 Set the balance of tripping functions according to the requirements of the particular generator. Leave these tripping functions in service to protect the generator in the event that a fault occurs during the test sequence. SEL-300G Instruction Manual Date Code 20060731...
Page 102 2-74 Relay Element Settings 1. Operate the generator at no load. Using the SEL-300G METER command, record the values of neutral third-harmonic voltage. VN3_NL = ______Thir harmonic neutral voltage, load, secondary. 2. Set the 64RAT setting equal to 0.0 to disable third-harmonic voltage differential protection and enable third-harmonic neutral undervoltage protection.
Page 103: Element Operating Characteristics
Settings/ 64G1 Voltages 64G1D |VN1| 64G1T 64G1P T64G |VP3| N64G 64RAT |•| |VN3| 64G2D 64G2P 64G2T 64RAT = 0.0 DELTA_Y = D 64G2 64G2P |VN3| VNOM |V1| DWG: M300G055a Figure 2.46: 64G Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 104: Field Ground Protection
Manual for detailed instructions on setting up the SEL-2664. Set the EIA-232 port in the SEL-300G to SEL protocol and 9600 baud rate to start receiving the insulation resistance value from the SEL-2664. Refer to Figure 1.5 for the connection diagram.
Page 105: Relay Word Bits
64FOPT = NONE When the SEL-2664 module is not in use, set the 64F Input Option setting equal to NONE. When the SEL-2664 is connected to the generator field winding and the SEL-300G, set the 64F Input Option setting equal to EXT.
Page 106 Note: The above Relay Word bits are not programmed for any action in the factory default settings. They must be added to appropriate SEL control equations and SER OGIC settings for Tripping, Alarm, SER triggering, etc. Date Code 20060731 SEL-300G Instruction Manual...
Page 107: Element Description
Element Description Functional Description The SEL-300G contains an out-of-step element to detect out-of-step conditions between two electrical sources. Two interconnected systems can experience an out-of-step condition for several reasons. For example, loss of excitation can cause a generator to lose synchronism with the rest of the system.
Page 108 78Z1 mho circle in the opposite direction from which it entered.) The latched states of 78R1 and 78R2 are retained until the next time SWING asserts, which is the next time a power system swing occurs. Date Code 20060731 SEL-300G Instruction Manual...
Page 109 Relay Element Settings 2-81 Figure 2.49: Single Blinder Scheme Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 110 Note that the positive-sequence current levels below the 50ABC setting will block the out-of-step function. Both 78R1 and 78R2 must be within the mho circle. Date Code 20060731 SEL-300G Instruction Manual...
Page 111: Settings Calculation
Make sure that the mho element and the blinders do not include the maximum possible generator load to avoid assertion of 78Z1, 78R1, and 78R2 under normal system operation. SEL-300G Instruction Manual Date Code 20060731...
Page 112 Reverse Reach M-N: Total Impedance Between Generator and System Generator Transient Reactance S-S': Perpendicular Bisector of M-N Transformer Reactance α and β: Angle of Separation Between Generator and System Figure 2.50: Single Blinder Typical Settings Date Code 20060731 SEL-300G Instruction Manual...
Page 113: Element Description
Element Description Functional Description The SEL-300G contains an out-of-step element to detect out-of-step conditions between two electrical sources. Two interconnected systems can experience an out-of-step condition for several reasons. For example, loss of excitation can cause a generator to lose synchronism with the rest of the system.
Page 114 During short circuit faults, the impedance either moves inside the inner blinder or goes through the two blinders almost instantaneously so the 78D does not time out. Either case prevents the out-of-step element from picking up. Figure 2.52 shows the logic diagram for the double blinder scheme. Date Code 20060731 SEL-300G Instruction Manual...
Page 115 Relay Element Settings 2-87 Figure 2.52: Double Blinder Scheme Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 116 OOST is integrated into the overall trip logic used by other elements since the common trip logic has TDURD, an identical timer. Refer to Section 4: SEL Control OGIC Equations for details regarding common trip logic. Date Code 20060731 SEL-300G Instruction Manual...
Page 117: Settings Calculation
Set the inner blinder 78R2 to detect all out-of-step conditions. To do this, set the inner blinder so that the equivalent machine angles α, shown in Figure 2.53, is approximately 120 degrees. A separation angle of 120 degrees or greater between two sources will generally result in loss of synchronism. SEL-300G Instruction Manual Date Code 20060731...
Page 118 The outer blinder should separate from the inner blinder far enough to ensure that the 78D timer accurately times the out-of-step slip cycle. The SEL-300G processes the out-of-step logic every one-half cycle of the system frequency. To ensure that the relay times the out-of-step slip frequency accurately, the outer and inner blinders must be separated appropriately.
Page 119 System Measured at 78R2 Generator Transient Reactance Angle of Separation Between Generator and γ: Transformer Reactance System Measured at 78R1 System Impedance M-N: Total Impedance Between Generator and System Figure 2.53: Double Blinder Typical Settings SEL-300G Instruction Manual Date Code 20060731...
Page 120: Frequency Protection
Element Description Functional Description The SEL-300G provides six steps of over/underfrequency elements. Each element can operate as an overfrequency or an underfrequency element, depending on its pickup setting. If the element pickup setting is less than the nominal machine frequency setting, FNOM, the element operates as an underfrequency element, picking up if measured frequency is less than the setpoint.
Page 121: Frequency Element Setting Calculation
Your local system coordinating council may have published underfrequency load shedding requirements. A 20V setting for 27B81P provides frequency element operation over the widest range of system and generator voltages. SEL-300G Instruction Manual Date Code 20060731...
Page 122: Element Operating Characteristics
OGIC Element Operating Characteristics Setting/ Voltages 27B81P |VA| |VB| Relay Word |VC| DELTA_Y = Y 27B81 To Frequency Element Logic (Figure 2.54) |VAB| |VBC| DWG: M300G063a |VAC| Figure 2.54: Frequency Element Voltage Supervision Logic Date Code 20060731 SEL-300G Instruction Manual...
Page 123 E81 ≥ 5) 81D5P < FNOM Under- Frequency Over- Frequency 81D6* 81D6P Frequency Element 6 81D6D 81D6P ≥ FNOM 81D6T (Setting E81 = 6) 81D6P < FNOM Under- DWG: M300G064a Frequency Figure 2.55: Frequency Element Logic SEL-300G Instruction Manual Date Code 20060731...
Page 124: Off-Frequency Accumulators
Eventually, this fatigue can lead to premature and catastrophic turbine blade failure. For steam turbine prime mover applications, the SEL-300G records the total time of operation of the generator at off-nominal frequencies in up to six frequency bands.
Page 125 Indication, Event Triggering, SER Triggering, Testing BND4T Frequency Band 4 Trip Tripping, Indication, SER Triggering Frequency Band 5 Alarm Indication, Event Triggering, SER BND5A Triggering, Testing BND5T Frequency Band 5 Trip Tripping, Indication, SER Triggering SEL-300G Instruction Manual Date Code 20060731...
Page 126: Abnormal Frequency Protection Setting Calculation
Consult the generator and prime mover manufacturers to determine the need or ability to trip the generator when the set time accumulation is reached. Refer to Section 4: SEL Control OGIC Equations for more detail and examples of tripping SEL control equations. OGIC Date Code 20060731 SEL-300G Instruction Manual...
Page 127: Element Operating Characteristics
Operation LBND5 = 56.5 Hz Band 6 LBND6 = 56.0 Hz 0.001 0.01 10.0 100.0 Time (minutes) 0.06 60.0 600.0 6000.0 DWG: M300G061 Time (seconds) Figure 2.56: Example Turbine Operating Limitations During Abnormal Frequency SEL-300G Instruction Manual Date Code 20060731...
Page 128 BND4A 62ACC TBND4 BND4T LBND3 BANDS ≥ 4 BND5A 62ACC TBND5 BND5T LBND4 BANDS ≥ 5 BND6A 62ACC TBND6 BND6T LBND5 BANDS = 6 DWG: M300G065 LBND6 Figure 2.57: Abnormal Frequency Protection Logic Diagram Date Code 20060731 SEL-300G Instruction Manual...
Page 129: Rtd-Based Protection (Models Compatible With Sel-2600 Series Rtd Module)
C805Z010VVX0003 [3 meters]—refer to the Model Option Table for additional cable choices— and SEL-2800, respectively) to transmit the RTD data to the SEL-300G (See Figure 1.4 for the detail). The EIA-232 port used must be set for SEL protocol and a baud rate of 2400.
Page 130 The relay allows you to define the type of each monitored RTD independently using the RTD Type settings. If an RTD Location setting is equal to NONE, the relay does not request that an RTD Type setting be entered for that input. Date Code 20060731 SEL-300G Instruction Manual...
Page 131 TRTMP11 = OFF RTD Alarm Temperature OFF, 32°–482°F ALTMP11 = OFF RTD Trip Temperature OFF, 32°–482°F TRTMP12 = OFF RTD Alarm Temperature OFF, 32°–482°F ALTMP12 = OFF Enable Winding Trip Voting Y, N EWDGV = N SEL-300G Instruction Manual Date Code 20060731...
Page 132 RTD leads are shorted or open. Also, failure of the SEL-2600 series or the fiber-optic connection results in RTD fault alarm in the SEL-300G relay. The relay offers two options to bias the RTD temperature thresholds.
Page 133 Figure 2.58 illustrates the Load Current Biased RTD trip characteristic with BLMT (Overload Bias Limit) set to 2.00 pu Amps. Load Current Biased RTD Element TRTMP+TMPK TRTMP TRTMP-TMPK TRTMP-2*TMPK Load (Per Unit of Nominal Current) M300G253 Figure 2.58: Winding RTD Trip Characteristics with BLMT = 2.00 SEL-300G Instruction Manual Date Code 20060731...
Page 134 172.46 291.96 231.80 16.39 200.00 175.84 303.46 240.70 16.78 210.00 179.15 315.31 249.80 17.17 220.00 183.17 327.54 259.20 17.56 230.00 186.82 340.14 268.90 17.95 240.00 190.45 353.14 278.90 18.34 250.00 194.08 366.53 289.10 18.73 Date Code 20060731 SEL-300G Instruction Manual...
Page 135 Note : The above Relay Word bits are not programmed for any action in the factory default settings. They must be added to appropriate SEL control equations and SER OGIC settings for Tripping, Alarm, SER triggering, etc. SEL-300G Instruction Manual Date Code 20060731...
Page 136: Pole Open Logic
Element Description Functional Description The SEL-300G pole open logic output Relay Word bit, 3PO, is logical 1 when the measured phase current and breaker auxiliary contact position agree that generator circuit breaker is open. The 3PO Relay Word bit is useful in event triggering, SER triggering, and other indication and control applications.
Page 137: Pole Open Logic Setting Calculation
52A input status to indicate breaker position. Set 3POD = 0 cycles unless your application requires a specific time-delayed dropout. NADVERTENT NERGIZATION ROTECTION The SEL-300G Inadvertent Energization protection function is provided by the INAD SEL OGIC control equation. Refer to Section 4: SEL Control Equations for complete details and a OGIC setting example.
Page 139 Figure 3.2: Voltage V Applied to Series RC Circuit................3-3 Figure 3.3: Demand Current Logic Outputs ...................3-6 Figure 3.4: DC Under- and Overvoltage Elements .................3-7 Figure 3.5: Create DC Voltage Elements with SEL Control Equations .........3-8 OGIC SEL-300G Instruction Manual Date Code 20060731...
Page 140 Figure 3.8: Latch Control Switch Operation Time Line...............3-14 Figure 3.9: Plotted Breaker Maintenance Points for a 13.8 kV Circuit Breaker ........3-17 Figure 3.10: SEL-300G Relay Breaker Maintenance Curve for a 13.8 kV Circuit Breaker ....3-19 Figure 3.11: Operation of SEL Control Equation Breaker Monitor Initiation Setting ....3-20...
Page 141: Auxiliary Function Settings
SER Trigger Settings and Alias Settings EMAND ETER Functional Description The SEL-300G Relay offers the choice between two types of demand metering, settable with the enable setting: EDEM = THM (Thermal Demand Meter) EDEM = ROL (Rolling Demand Meter) The relay provides demand and peak demand metering for the following values:...
Page 142 Meter Response (EDEM=THM) Time (minutes) DMTC=15 minutes Rolling Demand Meter Response (EDEM=ROL) Time (minutes) DWG: M300G124 Figure 3.1: Response of Thermal and Rolling Demand Meters to a Step Input (setting DMTC = 15 minutes) Date Code 20060731 SEL-300G Instruction Manual...
Page 143 (1.0 per unit) after a time period equal to setting DMTC = 15 minutes, referenced to when the step current input is first applied. The SEL-300G updates thermal demand values approximately every 2 seconds. Rolling Demand Meter Response (EDEM = ROL) The response of the rolling demand meter in Figure 3.1 (bottom) to the step current input (top) is...
Page 144 –5 to 0 minutes 1.0 per unit 0 to 5 minutes 1.0 per unit 5 to 10 minutes 2.0 per unit Rolling demand meter response at “Time = 10 minutes” = 2.0/3 = 0.67 per unit Date Code 20060731 SEL-300G Instruction Manual...
Page 145: Demand Ammeter Thresholds
The demand current pickup settings are applied to demand current meter outputs as shown in Figure 3.3. For example, when residual ground demand current I goes above corresponding G(DEM) demand pickup GDEMP, Relay Word bit GDEM asserts to logical 1. Use these demand current SEL-300G Instruction Manual Date Code 20060731...
Page 146: Relay Word Bits
Thermal (EDEM=THM) GDEM G(DEM) (residual) Rolling (EDEM=ROL) reset demand Demand Function QDEMP Thermal (EDEM=THM) QDEM 2(DEM) | 3I Rolling (EDEM=ROL) Serial Port reset Command demand DWG: M300G099 MET RD Figure 3.3: Demand Current Logic Outputs Date Code 20060731 SEL-300G Instruction Manual...
Page 147: Station Dc Monitor
Relay Word bits for control and indication. If the SEL-300G has a 125/250 Vac/Vdc supply, it can be powered by ac voltage (85 to 264 Vac) connected to the rear-panel terminals labeled POWER. When powering the relay with ac voltage, the dc voltage elements in Figure 3.4 see the average of the sampled ac voltage...
Page 148: Create Desired Logic For Dc Under- And Overvoltage Alarming
DCLO OUT106 = SV5T DCLOP>DCHIP SV5 = DCLO * DCHI DCLOP SV5PU SV5T DCLO * DCHI SV5PU DCHIP OUT106 = SV5T DWG: M300G086 Figure 3.5: Create DC Voltage Elements with SEL Control Equations OGIC Date Code 20060731 SEL-300G Instruction Manual...
Page 149 OK), the state of output contact OUT106 (according to contact type) is: open (“a” type output contact) closed (“b” type output contact) If the relay loses power entirely, all output contacts deassert, and the state of output contact OUT106 (according to contact type) is: SEL-300G Instruction Manual Date Code 20060731...
Page 150: Setting Group Selection Function
OGIC Table 3.2: Definitions for Active Setting Group Switching Control Equation Settings SS1 And SS2 OGIC Setting Definition go to (or remain in) setting Group 1 go to (or remain in) setting Group 2 Date Code 20060731 SEL-300G Instruction Manual...
Page 151: Operation Of Serial Port Group Command And Front-Panel Group Pushbutton
Active Setting Group Switching Example Use a latch control switch to select setting Group 1 and 2 in the SEL-300G. In this example, a SCADA contact is connected to optoisolated input IN104. Each pulse of the SCADA contact changes the active relay setting group.
Page 152 Note in Figure 3.7 that the latch control switch output (latch bit LT5) is effectively used as feedback for SEL control equation settings SET5 and RST5. The feedback of latch bit LT5 OGIC “guides” input IN104 to the correct latch control switch input. Date Code 20060731 SEL-300G Instruction Manual...
Page 153 SCADA contact. If the SCADA contact deasserts and then asserts again (new rising edge—see Pulse 2 in Figure 3.8), the “reset” input (setting RST5) asserts and latch bit LT5 deasserts back to logical 0 SEL-300G Instruction Manual Date Code 20060731...
Page 154 IN104D. Pulse 1 Pulse 2 Pulse 3 Pulse 4 rising rising rising rising edge edge edge edge IN104 /IN104 SET5=/IN104*!LT5 processing interval RST5=/IN104*LT5 DWG: M300G085 Figure 3.8: Latch Control Switch Operation Time Line Date Code 20060731 SEL-300G Instruction Manual...
Page 155: Active Setting Group Retained
ONITOR UNCTION The breaker monitor in the SEL-300G helps in scheduling circuit breaker maintenance. The breaker monitor settings in Table 3.4 are available via the SET G command (see Table 6.1 and the Settings Sheets in Section 6: Enter Relay Settings). Also refer to BRE Command (Breaker Monitor Data) and BRE n Command (Preload/Reset Breaker Wear) in Section 10: Serial Port Communications and Commands).
Page 156 The breaker maintenance information in Table 3.3 is plotted in Figure 3.9. Connect the plotted points in Figure 3.9 for a breaker maintenance curve. To estimate this breaker maintenance curve in the SEL-300G breaker monitor, three set points are entered: Set Point 1 maximum number of close/open operations with corresponding current interruption level.
Page 157 Auxiliary Function Settings 3-17 10,000 1000 kA Interrupted per DWG: M300G127 Operation Figure 3.9: Plotted Breaker Maintenance Points for a 13.8 kV Circuit Breaker SEL-300G Instruction Manual Date Code 20060731...
Page 158: Breaker Monitor Setting Example
Each phase (A, B, and C) has its own breaker maintenance curve (like that in Figure 3.10), because the separate circuit breaker interrupting contacts for phases A, B, and C do not necessarily interrupt the same magnitude current (depending on fault type and loading). Date Code 20060731 SEL-300G Instruction Manual...
Page 159 Auxiliary Function Settings 3-19 100% 10,000 KASP1=1.2 COSP1=10000 1000 KASP2=8.0 COSP2=150 KASP3=20.0 COSP3=12 6 7 8 9 DWG. M300G128 kA Interrupted per Operation Figure 3.10: SEL-300G Relay Breaker Maintenance Curve for a 13.8 kV Circuit Breaker SEL-300G Instruction Manual Date Code 20060731...
Page 160 BKMON 0.75 cyc DWG: M300G129 Figure 3.11: Operation of SEL Control Equation OGIC Breaker Monitor Initiation Setting Interpretation of the breaker monitor data is discussed in Section 8: Monitoring and Metering Functions. Date Code 20060731 SEL-300G Instruction Manual...
Page 161: Optoisolated Input Debounce Timers
Figure 3.12 and Figure 3.13 show the resultant Relay Word bits that follow corresponding optoisolated inputs for the different SEL-300G models. The figures show examples of energized and de-energized optoisolated inputs and corresponding Relay Word bit states. To assert an input, apply rated control voltage to the appropriate terminal.
Page 162: Input Debounce Timers
For example, in the factory default settings, all the optoisolated input pickup/dropout debounce timers are set at 1/2-cycle (e.g., IN104 = 0.50). See SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands for a list of the factory default settings. Date Code 20060731 SEL-300G Instruction Manual...
Page 163: Input Functions
52A = IN101 Connect input IN101 to a 52a circuit breaker auxiliary contact. If a 52b circuit breaker auxiliary contact is connected to input IN101, the setting is changed to: 52A = !IN101 [!IN101 = NOT(IN101)] SEL-300G Instruction Manual Date Code 20060731...
Page 164: Ser Trigger Settings And Alias Settings
Table 6.1 and corresponding Settings Sheets at the end of Section 6: Enter Relay Settings. Use either spaces or commas to delimit the elements. For example, if you enter setting SER1 as: SER1 = 51NT, 50N1T,, 51CT, 51VT 64G1T, Date Code 20060731 SEL-300G Instruction Manual...
Page 165: Alias Settings
Relay Word bit will not be recorded, even though the Relay Word bit has an alias. If you do not wish to use an alias setting, set ALIASn = NA. SEL-300G Instruction Manual Date Code 20060731...
Page 167 Operation of Output Contacts for Different Output Contact Types........4-35 Local Control Switches.......................4-39 Local Control Switch Types ....................4-40 Factory Settings Examples....................4-42 Additional Local Control Switch Application Ideas ............4-43 Local Control Switch States Retained.................4-43 Remote Control Switches ......................4-44 SEL-300G Instruction Manual Date Code 20060731...
Page 168 Correspondence Between Local Control Switch Types and Required Label Settings ..4-42 Table 4.5: Relay Self-Tests........................4-57 Table 4.6: SEL-300G Relay Word Bits ....................4-59 Table 4.7: Relay Word Bit Definitions for Table 4.6 ................4-61 FIGURES Figure 4.1: Result of Falling Edge Operator on a Deasserting Underfrequency Element ......4-5 Figure 4.2: SEL...
Page 169 Figure 4.28: SEL-300G Relay Breaker Failure Logic ................4-52 Figure 4.29: Generator/Breaker Topology Where SEL-300G1 Relay Offers Breaker Failure and Breaker Flashover Protection ..................4-53 Figure 4.30: SEL-300G Relay Breaker Failure Plus Breaker Flashover Protection Logic.....4-54 SEL-300G Instruction Manual Date Code 20060731...
Page 171: Sel Control Equations
SECTION 4: SEL CONTROL EQUATIONS OGIC NTRODUCTION ® This section describes SEL control equations and their various applications within the OGIC SEL-300G Relay. Specific topics include: • General Operation of Relay Word Bits • Control Equations OGIC • Control Equation Latch Function OGIC •...
Page 172: Relay Word Bits
51NT is either timing on its curve or is already timed out. Neutral Time-Overcurrent Element 51NT Time Out Indication If neutral time-overcurrent element 51NT is not timed out on its curve, Relay Word bit 51NT is in the following state: 51NT = 0 (logical 0) Date Code SEL-300G Instruction Manual 20060731...
Page 173: Other Relay Word Bits
(like the preceding neutral time-overcurrent element example) are unique because they have a Relay Word bit (e.g., 51NR) that asserts for the reset state of the element. Relay Word bits are used in SEL control equations, which are explained in the following OGIC subsection. SEL-300G Instruction Manual Date Code 20060731...
Page 174 The rising edge operator, /, is applied to individual Relay Word bits only—not to groups of elements within parentheses. For example, the SEL control equation event report generation OGIC setting uses rising edge operators: ER = /24C2 + /32P1 + /46Q2 + … Date Code SEL-300G Instruction Manual 20060731...
Page 175: Sel Ogic Control Equations
SV7 = (SV7 + IN103 + TRIP1) * (50H1 + 50R1 + 52A) In the above example, the logic within the parentheses is processed first and then the two parentheses resultants are ANDed together. The above example is from Figure 4.28 in this SEL-300G Instruction Manual Date Code 20060731...
Page 176 Following are examples of both. Example of NOT Operator, !, Applied to Single Element The internal circuit breaker status logic in the SEL-300G operates on 52a circuit breaker auxiliary contact logic. The SEL control equation circuit breaker status setting is labeled 52A.
Page 177: All Sel Ogic Control Equations Must Be Set
TR1. Note that the SEL control equation variables (SEL control equation settings SV1 OGIC OGIC through SV16) are processed after the trip equation (SEL control equation trip setting TR). OGIC SEL-300G Instruction Manual Date Code 20060731...
Page 178 Relay OGIC Word bits and logical operators, as shown in the examples earlier in this section. Figure 4.2 illustrates the SEL control equation variable timer logic. OGIC Settings SV2–SV16 operate similarly when enabled. Date Code SEL-300G Instruction Manual 20060731...
Page 179 Input Output Contact Traditional Latching Relay DWG: M300G069 Figure 4.3: Traditional Latching Relay Up to sixteen (16) latch control switches (as enabled by the ESL setting) in the SEL-300G provide latching relay type functions. SEL-300G Instruction Manual Date Code 20060731...
Page 180: Latch Control Switch Application Ideas
52A and measured current. SET1 = LB1 + RB1 RST1 = 3PO Relay Relay Word Word OGIC Setting SET1 (set) OGIC Setting RST1 DWG: M300G067 (reset) Figure 4.5: Latch Control Switch to Shut Down Generator Date Code SEL-300G Instruction Manual 20060731...
Page 181: Latch Control Switch States Retained
This requires that SEL control equation settings SETn and RSTn for any given latch OGIC bit LTn (n = 1 through 16; see Figure 4.4) be set with care. Settings SETn and RSTn must not SEL-300G Instruction Manual Date Code 20060731...
Page 182: Trip Logic
(see Section 3: Auxiliary Function Settings). OGIC The SEL-300G provides tripping logic to operate up to four external devices. Table 4.2 shows the normal association between tripping settings and the apparatus controlled. Figure 4.6 illustrates the tripping logic.
Page 183 T R IP 1 B it T R IP 2 T R IP T R IP 3 T R IP 4 D W G : 3 0 0 G 0 6 8 Figure 4.6: Trip Logic SEL-300G Instruction Manual Date Code 20060731...
Page 184: Set Trip
Resultant logic output of Minimum Trip Duration Timer OR-combination of above two logic traces (inputs into OR-1 to drive Relay DWG: M300G079 Word bit TRIP1) Figure 4.7: Minimum Trip Duration Timer Operation (see Figure 4.6) Date Code SEL-300G Instruction Manual 20060731...
Page 185: Unlatch Trip
It is necessary to trip the Generator Main Circuit Breaker to isolate the generator from the system in response to many situations. The SEL-300G elements and logic used to detect each of the conditions are summarized in the following table.
Page 186: Generator Field Breaker Trip, Tr2
It is necessary to trip the Generator Field Breaker if there is a generator fault or when tripping the generator manually. Field breaker tripping also is recommended for most abnormal operating conditions, excepting over/underfrequency element operation. The SEL-300G elements and logic used to detect field breaker tripping conditions are summarized in the table below. The field is left energized after over/underfrequency trips and negative-sequence overcurrent trips so if the situation can be remedied quickly, the generator can be put back into service quickly.
Page 187: Generator Lockout Relay Trip, Tr4
51CT + 51VT Prolonged system fault detected by voltage controlled phase time- overcurrent or voltage restrained phase time-overcurrent. INADT Inadvertent generator energization detected. LT1*32P2T Generator manual trip through latch bit LT1 and low-forward power element 32P2T. SEL-300G Instruction Manual Date Code 20060731...
Page 188 Equation Term Asserts to Indicate: Generator fault detected by elements set in SV3 SEL control OGIC equation, defined above. Generator abnormal operating conditions detected by elements set in SV4 SEL control equation, defined above. OGIC Date Code SEL-300G Instruction Manual 20060731...
Page 189: Program Output Contacts For Tripping
OUT101 = TRIP1 Generator Main Circuit Breaker Tripping Contact OUT102 = TRIP2 Generator Field Circuit Breaker Tripping Contact OUT103 = TRIP3 Prime Mover Tripping Contact OUT104 = TRIP4 Generator Lockout Relay Tripping Contact SEL-300G Instruction Manual Date Code 20060731...
Page 190: Close Logic
1. If CLEN does not assert before CLSD expires, the CLOSE Relay Word bit does not assert and the logic is reset. This logic permits the CLEN SEL control equation to supervise OGIC relay initiated closes. See the Settings Example below. Date Code SEL-300G Instruction Manual 20060731...
Page 191: Unlatch Close
ULCL is set by the TRIP Relay OGIC Word bit. This prevents the CLOSE Relay Word bit from being asserted any time the TRIP Relay Word bit is asserted (TRIP takes priority). See Trip Logic in this section. SEL-300G Instruction Manual Date Code 20060731...
Page 192: Defeat The Close Logic
CLOSE signal to be issued by the SEL-300G or can close an output contact to supervise an external close condition.
Page 193 The 25SLO and 25SHI settings define the acceptable slip frequency between the system and the generator prior to closing the generator breaker. 25SHI must be greater than 25SLO. The SEL-300G defines slip frequency greater than 0 Hz when the generator frequency is greater than the system frequency.
Page 194 The TCLOSD setting predicts the amount of time that it will take for the generator main breaker to close, from the instant the SEL-300G CLOSE contact closes, to the instant the breaker main contacts close. Enter a value that is as accurate as possible to obtain best performance of the 25C close initiating Relay Word bit.
Page 195: Setting Calculation
Generator VT Connection and Transformer Ratio • Generator Breaker Closing Time • Generator Step-Up Transformer Winding Turns Ratio and Connection (only required if the transformer is connected between the generator VTs and the synch VT) SEL-300G Instruction Manual Date Code 20060731...
Page 196 Set 25RCF using the equation below: • 25RCF PTRS where = step-up transformer voltage ratio (HV/LV) = 1 when no step-up transformer is present = generator voltage transformer ratio to 1 PTRS = synch voltage transformer ratio to 1 Date Code SEL-300G Instruction Manual 20060731...
Page 197 The 25SLO and 25SHI settings define the minimum and maximum acceptable slip frequency for a generator breaker close. 25SLO must be set less than 25SHI. The SEL-300G defines the slip frequency positive when the generator frequency is higher than the system frequency.
Page 198 If there are interposing relays between the SEL-300G CLOSE output and the circuit breaker close coil, add the operating time of these components to the breaker’s own closing time to calculate the TCLOSD setting.
Page 199 With the generator running and the generator main circuit breaker closed, reduce the generator load current as low as possible. This is particularly important when a step-up transformer is connected between the generator VTs and the synch VT, as in Figure 4.9. SEL-300G Instruction Manual Date Code 20060731...
Page 200 If the 25RCF value calculated in Step 7 varies from the 25RCF setting noted in Step 1, you may wish to enter the new value as a new 25RCF setting to improve the accuracy of the synch-check voltage acceptance logic. Date Code SEL-300G Instruction Manual 20060731...
Page 201: Element Operating Characteristics
The most convenient method to apply the synch-check function is to use one of the resulting Relay Word bits to enable the SEL-300G CLOSE output by setting the synch-check Relay Word bit in the CLEN, CLOSE Enable SEL control equation.
Page 202 SLIP, Hz System Frequency Relay Word Bits Settings GENFHI 25SHI 25SLO GENFLO Note: “Enable Slip Calculation” asserts when both fA and fS frequencies are within 20-70 Hz. DWG: M300G215a Figure 4.12: Synch-Check Function Slip Elements Date Code SEL-300G Instruction Manual 20060731...
Page 203 Angle Difference = | Ang(VP) - Ang(VS) - COMPA | |UncompAng| DWG: M300G216 Figure 4.13: Synch-Check Function Angle Elements Relay Word Bits 99 sec Relay 25A2 Word 25A1 TCLOSD BKRCF RESET CLOSE !3PO DWG: M300G218a Figure 4.14: Breaker Close Failure Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 204: Er Control Equation
When setting ER sees a logical 0 to logical 1 transition, it generates an event report (if the SEL-300G is not already generating a report that encompasses the new transition). The factory setting is:...
Page 205: Output Contact Control
Refer to Figure 4.16 and Figure 4.17. The execution of the serial port command PULSE n ( n = OUT101 through OUT212) asserts the corresponding Relay Word bit (OUT101 through OUT212) to logical 1. The assertion of SEL-300G Instruction Manual Date Code 20060731...
Page 206 Notice in Figure 4.16 that all possible combinations of ALARM output contact coil states (energized or de-energized) and output contact types (a or b) are demonstrated. See Output Contact Jumpers in Section 5: Installation for output contact type options. Date Code SEL-300G Instruction Manual 20060731...
Page 207 -- an extra Alarm output contact (JMP23 in position 1-2) Section 5: Installation See Figure 5.25 and Table 5.3 in for more information on jumper JMP23. Figure 4.16: Logic Flow for Example Output Contact Operation (All Models) SEL-300G Instruction Manual Date Code 20060731...
Page 208 Note 2: See Figure 5.26 and Figure 5.27 in Section 5: Installation for the location of jumpers to configure output contacts. DWG: M300G082a Figure 4.17: Logic Flow for Example Output Contact Operation— Extra I/O Board (Model 0300G_1 and 0300G_Y) Date Code SEL-300G Instruction Manual 20060731...
Page 209: Local Control Switches
The local control switch logic in Figure 4.18 repeats for each local bit LB1 through LB16. Use these local bits in SEL control equations. For a given local control OGIC switch, the local control switch positions are enabled by making corresponding label settings. SEL-300G Instruction Manual Date Code 20060731...
Page 210: Local Control Switch Types
OFF/MOMENTARY Switch The local bit LB n is maintained in the OFF (LB n = logical 0) position and pulses to the MOMENTARY (LB n = logical 1) position for one processing interval (1/4 cycle). Date Code SEL-300G Instruction Manual 20060731...
Page 211 1) position for one processing interval (1/4 cycle). position Relay Word OFF position Logical 1 (n=1 through 16) (logical 0) MOMENTARY DWG: M300G145 position Figure 4.21: Local Control Switch Configured as an ON/OFF/MOMENTARY Switch SEL-300G Instruction Manual Date Code 20060731...
Page 212: Factory Settings Examples
MOMENTARY position The following Figure 4.22 shows local control switches with factory settings. GEN SHUTDOWN Local RETURN Logical 1 (logical 0) TRIP DWG: M300G080 Figure 4.22: Configured GEN SHUTDOWN Switch Drives Local Bit LB1 Date Code SEL-300G Instruction Manual 20060731...
Page 213: Additional Local Control Switch Application Ideas
If a local control switch is made newly operable because of a settings change (i.e., the corresponding label settings are set), the corresponding local bit starts out at logical 0. SEL-300G Instruction Manual Date Code 20060731...
Page 214: Remote Bit Application Ideas
The states of the remote bits (Relay Word bits RB1 through RB16) are not retained if power to the relay is lost and then restored. The remote control switches always come back in the OFF position (corresponding remote bit is deasserted to logical 0) when power is restored to the relay. Date Code SEL-300G Instruction Manual 20060731...
Page 215: Remote Bit States Retained When Settings Changed Or Active Setting Group Changed
Traditional Indicating Panel Meters Replaced with Rotating Meter Display The indicating panel meters are not needed if the rotating default display feature in the SEL-300G is applied. The relay already is measuring the desired quantities to a high degree of accuracy.
Page 216: Traditional Indicating Panel Lights
METER commands. Traditional Indicating Panel Lights Figure 4.24 shows traditional indicating panel lights wired in parallel with SEL-300G optoisolated inputs. Input IN101 provides generator main circuit breaker status to the relay, and input IN102 indicates generator field circuit breaker status.
Page 217: Traditional Indicating Panel Lights Replaced With Rotating Text Display
Traditional Indicating Panel Lights Replaced with Rotating Text Display The indicating panel lights are not needed if the rotating text display feature in the SEL-300G is used. Figure 4.25 shows the elimination of the indicating panel lights by using the rotating text display.
Page 218: Factory Settings Examples
“breaker closed” condition but not the “breaker open” condition, make the following settings: IN101 (52a circuit breaker auxiliary contact connected to input IN101—see Figure 4.25) DP1_1 GEN BKR CLOSED (displays when DP1 = logical 1) DP1_0 (blank) Date Code SEL-300G Instruction Manual 20060731...
Page 219: Inadvertent Energization
OGIC setting directly to 0 (logical 0) or 1 (logical 1) and the corresponding text setting. For example, if an SEL-300G is protecting a generator labeled “Unit 1A,” the generator name can be continually displayed with the following settings (set directly to logical 1)
Page 220 OGIC times rated stator current from the system. These high stator currents induce high currents in the rotor, quickly damaging the rotor. The SEL-300G INAD SEL control equation is intended for use as dedicated inadvertent OGIC energization protection. Two accepted approaches are voltage supervised overcurrent relays and auxiliary contact supervised overcurrent relays.
Page 221 If the field breaker auxiliary contact is connected to another input in your application, use the Relay Word bit representing that input in the SV2 SEL control OGIC equation. If a field breaker auxiliary contact is not connected to the SEL-300G, remove this term from the SV2 SEL control equation. OGIC •...
Page 222 Figure 4.27: Generator/Breaker Topology Where SEL-300G1 Relay Offers Breaker Failure Protection In this topology, the SEL-300G is able to directly measure current flowing in the generator breaker. The SV7 SEL control equation below creates a breaker failure function based on OGIC circuit breaker current and the breaker auxiliary contact, 52A, state.
Page 223 Figure 4.29: Generator/Breaker Topology Where SEL-300G1 Relay Offers Breaker Failure and Breaker Flashover Protection In this topology, the SEL-300G is able to measure directly current flowing in the generator breaker and step-up transformer neutral circuit. The SV7 SEL control equation below...
Page 224: Application Examples
In some cases, the early alarm may give an operator the opportunity to correct the problem before the relay trips the generator. In addition, the SEL-300G provides several monitoring functions that can provide alarms related to loss of relaying potential, relay performance, dc battery voltage, and breaker wear.
Page 225 In this instance, you may wish to use the 24D1T element for tripping. In this case, the instantaneous pickup elements, 24D1 and 24C2, can be used to indicate that the SEL-300G has detected volts/hertz overexcitation and is timing toward a trip. To obtain this indication, include the desired Relay Word bit in the SEL...
Page 226 Control Equations OGIC Circuit Breaker Wear Monitor The SEL-300G circuit breaker wear monitor function described in Section 3: Auxiliary Function Settings provides an indication, BCW, when the combination of close-to-open operations and interrupted current exceeds the breaker manufacturer’s wear recommendation, as entered into the relay via the settings.
Page 227 Warning Measures the temperature –40° C at the A/D voltage +85° C reference every 10 seconds. Failure Latched –50° C +100° C Failure Latched Performs a read/write test on system RAM every 60 seconds. SEL-300G Instruction Manual Date Code 20060731...
Page 228 10 seconds. The following self-tests are performed by dedicated circuitry in the microprocessor and the SEL-300G main board. Failures in these tests shut down the microprocessor and are not shown in the STATUS report. Micro- Failure...
Page 229: Relay Word Bits (Used In Sel Ogic Control Equations)
The Relay Word bit row numbers correspond to the row numbers used in the TAR command [see TAR Command (Target) in Section 10: Serial Port Communications and Commands ]. Rows 0 and 1 are reserved for the display of the two front-panel target LED rows. Table 4.6: SEL-300G Relay Word Bits Relay Word Bits 24TC...
Page 230 This Relay Word bit is replaced with “*” in SEL-300G models 0300G1 and 0300G3 (no ground differential). This Relay Word bit is replaced with “*” in SEL-300G models 0300G_0 and 0300G_W (no additional I/O). See Figure 5.26 and Figure 5.27 for the location of jumpers to configure output contacts.
Page 231 59G1 Level 1 residual instantaneous overvoltage element [residual voltage (3V0) above pickup setting 59G1P; see Figure 2.44] 59G2 Level 2 residual instantaneous overvoltage element [residual voltage (3V0) above pickup setting 59G2P; see Figure 2.44] SEL-300G Instruction Manual Date Code 20060731...
Page 232 Single blinder: 78R1/78R2 and 78Z1 assert Indication Double blinder: 78R1 and 78R2 assert or only 78R1 asserts (see Figures 2.48 and 2.51) Setting Group 1 active (see Table 3.1) Indication Setting Group 2 active (see Table 3.1) Date Code SEL-300G Instruction Manual 20060731...
Page 233 (maximum phase current above pickup setting 51CP; see Figure 2.40) 51CT Voltage controlled phase time-overcurrent element 51CT Tripping, Control timed out (derived from 51C; see Figure 2.40) 51CR Voltage controlled phase time-overcurrent element 51CT Testing fully reset (see Figure 2.40) SEL-300G Instruction Manual Date Code 20060731...
Page 234 Figure 3.3) QDEM Negative-sequence demand current above pickup setting QDEMP (see Figure 3.3) GDEM Residual demand current above pickup setting GDEMP (see Figure 3.3) NDEM Neutral demand current above pickup setting NDEMP (see Figure 3.3) Date Code SEL-300G Instruction Manual 20060731...
Page 235 Testing Figure 4.8) Close Initiating SEL control equation (see Figure 4.8) OGIC CLOSE Close logic output asserted (see Figure 4.8) Output contact assignment ULCL Unlatch close SEL control equation (see Figure 4.8) Testing OGIC SEL-300G Instruction Manual Date Code 20060731...
Page 236 (see Breaker Monitor in Section 3: Auxiliary Function Settings ) FAULT Generator fault indication (halts Max/Min METER recording) DCLO Station dc battery instantaneous undervoltage element (see Figure 3.4) DCHI Station dc battery instantaneous overvoltage element (see Figure 3.4) Date Code SEL-300G Instruction Manual 20060731...
Page 237 Undervoltage element for frequency element blocking (any Indication, Control phase voltage below pickup setting 27B81P; see Figure 2.53) Phase instantaneous overcurrent element for load detection (maximum phase current above pickup setting 50LP; see Figure 2.58) SEL-300G Instruction Manual Date Code 20060731...
Page 238 Abnormal frequency band 6 trip (accumulated off-frequency Indication, operating time in band 6 exceeds TBND6 setting; see Tripping Figure 2.56) BNDT BNDT = BND1T + BND2T + BND3T + BND4T + BND5T + BND6T Date Code SEL-300G Instruction Manual 20060731...
Page 239 Local Bit 4 asserted (see Figure 4.18) mounted control Local Bit 5 asserted (see Figure 4.18) switches Local Bit 6 asserted (see Figure 4.18) Local Bit 7 asserted (see Figure 4.18) Local Bit 8 asserted (see Figure 4.18) SEL-300G Instruction Manual Date Code 20060731...
Page 240 Zone 2 compensator distance element timed out (see Tripping Figure 2.10) ZLOAD Load encroachment element pickup(see Figure 2.8) Control T64G 64G2T Pickup for Ground Near Generator Terminals (see Indication Figure 2.46) N64G 64G2T Pickup for Ground Near Neutral (see Figure 2.46) Date Code SEL-300G Instruction Manual 20060731...
Page 241 SV6T OGIC asserted (see Figure 4.2) SV7T control equation variable timer output SV7T OGIC asserted (see Figure 4.2) SV8T control equation variable timer output SV8T OGIC asserted (see Figure 4.2) SEL-300G Instruction Manual Date Code 20060731...
Page 242 Display Point 8 asserted Front-panel text display Display Point 7 asserted Display Point 6 asserted Display Point 5 asserted Display Point 4 asserted Display Point 3 asserted Display Point 2 asserted Display Point 1 asserted Date Code SEL-300G Instruction Manual 20060731...
Page 243 87R = (87R1 + 87R2 + 87R3) * !(87BL1+87BL2+87BL3+87B) (see Figures 13.5, 13.6, 13.7) 87R1 1 restrained differential element (see Figure 13.4) Testing, Indication 87R2 2 restrained differential element (see Figure 13.4) 87R3 2 restrained differential element (see Figure 13.4) SEL-300G Instruction Manual Date Code 20060731...
Page 244 Level 2 87-input residual instantaneous overcurrent element Control, Indication pickup (residual current above 50R2P setting; see Figure 2.27) 50R2T Level 2 87-input residual definite-time overcurrent element Tripping, Control, timed out (derived from 50R2; see Figure 2.27) Indication Date Code SEL-300G Instruction Manual 20060731...
Page 245 MPP1P Zone 1 phase-phase compensator distance element pickup Indication (see Figure 2.10) MABC1P Zone 1 three-phase compensator distance element pickup (see Figure 2.10) 27VS Synch voltage input (VS) undervoltage (see Figure 4.10) Indication, Control SEL-300G Instruction Manual Date Code 20060731...
Page 246 Output contact OUT204 asserted (see Figure 4.17) OUT205 Output contact OUT205 asserted (see Figure 4.17) OUT206 Output contact OUT206 asserted (see Figure 4.17) OUT207 Output contact OUT207 asserted (see Figure 4.17) OUT208 Output contact OUT208 asserted (see Figure 4.17) Date Code SEL-300G Instruction Manual 20060731...
Page 247 Set Latch Bit 4 (see Figure 4.4) SET5 Set Latch Bit 5 (see Figure 4.4) SET6 Set Latch Bit 6 (see Figure 4.4) SET7 Set Latch Bit 7 (see Figure 4.4) SET8 Set Latch Bit 8 (see Figure 4.4) SEL-300G Instruction Manual Date Code 20060731...
Page 248 Latch Bit 13 asserted (see Figure 4.4) mounted latching LT14 Latch Bit 14 asserted (see Figure 4.4) relays LT15 Latch Bit 15 asserted (see Figure 4.4) LT16 Latch Bit 16 asserted (see Figure 4.4) Date Code SEL-300G Instruction Manual 20060731...
Page 249 RTD input, or communication with the Triggering SEL-2600 Series RTD Module has been interrupted. Not used Not used Not used Not used Not used Not used 2600IN Contact input 2600IN from the SEL-2600 Series RTD Control, Indication Module. SEL-300G Instruction Manual Date Code 20060731...
Page 250 Trip Logic (see Figure 4.6) and Close Logic (see Figure 4.8), respectively. Thus, they are not used in SEL control equations. They are in the Relay Word for embedded event report OGIC information functions. Date Code SEL-300G Instruction Manual 20060731...
Page 251 EIA-232 Serial Port Voltage Jumpers.................5-34 Clock Battery ........................5-35 TABLES Table 5.1: Communication Cables to Connect the SEL-300G Relay to Other Devices ......5-21 Table 5.2: Output Contact Jumpers and Corresponding Output Contacts ..........5-32 Table 5.3: “Extra Alarm” Output Contacts and Corresponding Controlling Jumpers ......5-32 Table 5.4:...
Page 252 Generator With Open-Delta PTs, Step-Up Transformer Included in Differential Zone, and Synch-Check ....................5-27 Figure 5.25: SEL-300G Relay DC Connection Example................5-27 Figure 5.26: Jumper, Connector, and Major Component Locations on the SEL-300G Relay Main Board (All Models).....................5-29 Figure 5.27: Jumper, Connector, and Major Component Locations on the SEL-300G Relay Extra I/O Board (Model 0300G_1, Screw Terminal Block Version) ......5-30...
Page 253: Installation
OUNTING Rack Mount We offer the SEL-300G Relay in a rack-mount version that bolts easily into a standard 19-inch rack (see Figure 5.1). From the front of the relay, insert four rack screws (two on each side) through the holes on the relay mounting flanges.
Page 254 Installation Figure 5.1: SEL-300G Relay Dimensions and Panel Mount Cut-Out To better use Figure 5.1, refer to Table 1.3 for rack unit height information on the SEL-300G models (2U or 3U, screw-terminal block or Connectorized option). Date Code 20060731 SEL-300G Instruction Manual...
Page 255 Installation Figure 5.2: SEL-300G Relay Front-Panel Drawings for Rack-Mount Relays (2U and 3U), Screw-Terminal Block, and Connectorized Versions SEL-300G Instruction Manual Date Code 20060731...
Page 256 Installation Figure 5.3: SEL-300G Relay Front-Panel Drawings for Panel-Mount Relays (2U and 3U), Screw-Terminal Block, and Connectorized Versions Date Code 20060731 SEL-300G Instruction Manual...
Page 257 Installation Figure 5.4: SEL-300G0 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Screw-Terminal Block Version SEL-300G Instruction Manual Date Code 20060731...
Page 258 Installation Figure 5.5: SEL-300G1 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Screw-Terminal Block Version Date Code 20060731 SEL-300G Instruction Manual...
Page 259 Installation Figure 5.6: SEL-300G2 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Screw-Terminal Block Version SEL-300G Instruction Manual Date Code 20060731...
Page 260 Installation Figure 5.7: SEL-300G3 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Screw-Terminal Block Version Date Code 20060731 SEL-300G Instruction Manual...
Page 261 Installation Figure 5.8: SEL-300G0 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Connectorized Version SEL-300G Instruction Manual Date Code 20060731...
Page 262 5-10 Installation Figure 5.9: SEL-300G1 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Connectorized Version Date Code 20060731 SEL-300G Instruction Manual...
Page 263 Installation 5-11 Figure 5.10: SEL-300G2 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Connectorized Version SEL-300G Instruction Manual Date Code 20060731...
Page 264 5-12 Installation Figure 5.11: SEL-300G3 Relay Rear-Panel Drawings for Rack- and Panel-Mount Relays (2U and 3U), Connectorized Version Date Code 20060731 SEL-300G Instruction Manual...
Page 265: Making Rear-Panel Connections
(2) 8-position female plug-in connectors for optoisolated inputs IN201 through IN208. These connectors accept wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver. Secure each connector to the relay chassis with the screws SEL-300G Instruction Manual Date Code 20060731...
Page 266 (1) CT shorting connector for current inputs IA87, IB87, and IC87 (SEL-0300G1 and SEL-0300G3). • (1) connector for voltage input VS (SEL-0300G2 and SEL-0300G3). These prewired connectors (and the serial port connector) are unique and may only be installed in one orientation. Date Code 20060731 SEL-300G Instruction Manual...
Page 267 Installation 5-15 Figure 5.12: SEL-300G Relay Connectorized Coding (Top View; Models 0300G_W and 0300G_Y) SEL-300G Instruction Manual Date Code 20060731...
Page 268: Chassis Ground
Models 0300G_0H, 0300G_03, 0300G_WH, and 0300G_W3 Models 0300G_0H, 0300G_03, 0300G_WH, and 0300G_W3 can be ordered with standard output contacts only. Refer to General Specifications in Section 1: Introduction and Specifications for output contact ratings. Date Code 20060731 SEL-300G Instruction Manual...
Page 269 The same holds true for output contacts OUT202 through OUT212 (if they are also high current interrupting output contacts). Note: Do not use the high current interrupting output contacts to switch ac control signals. SEL-300G Instruction Manual Date Code 20060731...
Page 270: Optoisolated Inputs
Installation Optoisolated Inputs The optoisolated inputs in any of the SEL-300G models (e.g., IN102, IN207) are not polarity dependent. With nominal control voltage applied, each optoisolated input draws approximately 5 mA of current. Refer to General Specifications in Section 1: Introduction and Specifications for optoisolated input ratings.
Page 271: Potential Transformer Inputs
Refer to Table 10.1 for information on the serial ports available on the different SEL-300G models. Serial Port 1 on all the SEL-300G models is an EIA-485 port (4-wire). The Serial Port 1 Connectorized connector accepts wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver.
Page 272 Rear-Panel EIA-485 Serial Port #1 Connections (2-wire Modbus Example) All EIA-232 ports accept 9-pin D-subminiature male connectors. Port 2 on all the SEL-300G models includes the IRIG-B time-code signal input (see Table 10.2; see following discussion on IRIG-B time-code input).
Page 273: Irig-B Time-Code Input
SEL-2020 Communications Processor or the SEL-IDM listed in Table 5.1. A demodulated IRIG-B time code can be input into Serial Port 2 on any of the SEL-300G models. This is handled adeptly by connecting Serial Port 2 of the SEL-300G to an SEL-2020 with Cable C273A.
Page 274: Example Ac And Dc Connection Diagrams
DWG: M300G087 Figure 5.14: SEL-300G1 Relay AC Connection Example—High-Impedance Grounded Generator With Current Differential Protection Generator Phase-Input Current Transformers DWG: M300G088 Figure 5.15: SEL-300G0 Relay AC Connection Example—High-Impedance Grounded Generator Without Current Differential Protection Date Code 20060731 SEL-300G Instruction Manual...
Page 275 Grounded Generator With Step-Up Transformer Included in Differential Zone Generator DWG: M300G090 Optional VN connection provides 100% Stator Ground Protection Figure 5.17: SEL-300G0 Relay AC Connection Example—Resistance Grounded Generator With Ground Differential Protection (87N) SEL-300G Instruction Manual Date Code 20060731...
Page 276 Generator DWG: M300G092 Figure 5.18: SEL-300G0 Relay AC Connection Example—Solidly Grounded Generator With Ground Differential Protection (87N) Generator DWG: M300G093 Figure 5.19: SEL-300G1 Relay AC Connection Example—High-Impedance Grounded Generator With Split-Phase Current Differential Protection Date Code 20060731 SEL-300G Instruction Manual...
Page 277 Figure 5.20: SEL-300G1 Relay Applied Using Open-Delta Potentials Generator Phase-Input Current Transformers to A, B, or C DWG: M300G202 Figure 5.21: SEL-300G2 Relay High-Impedance Grounded Generator With Synch- Check and Without Current Differential Protection SEL-300G Instruction Manual Date Code 20060731...
Page 278 Window CT DWG: M300G206 Figure 5.22: SEL-300G1 Relay High-Impedance Grounded Generator With Split- Phase, Self-Balancing Differential Protection Generator SYNCP=VBC DWG: M300G205 Figure 5.23: SEL-300G2 Relay Solidly Grounded Generator With Ground Differential (87N) and Synch-Check Date Code 20060731 SEL-300G Instruction Manual...
Page 279 Relay Breaker Lockout Alarm Annunciator TRIP Relay Annunciator Field Breaker Main Failure Initiate Abnormal Main Prime Main Operation Breaker Mover Breaker Annunciator TRIP Trip Close DWG: M300G094 Figure 5.25: SEL-300G Relay DC Connection Example SEL-300G Instruction Manual Date Code 20060731...
Page 280: Accessing The Relay Main Board (All Models) And Extra I/O Board (Models 0300G_1 And 0300G_Y)
4. Identify which drawout board needs to be changed. All SEL-300G models have a main board in the top guides, and Models 0300G_1 and 0300G_Y have an extra I/O board below the main board.
Page 281 Installation 5-29 OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OUT107 JMP23 ALARM JMP2 JMP1 DWG: M300G096 Figure 5.26: Jumper, Connector, and Major Component Locations on the SEL-300G Relay Main Board (All Models) SEL-300G Instruction Manual Date Code 20060731...
Page 282 JMP22 OUT208 JMP21 OUT209 JMP20 OUT210 JMP19 OUT211 JMP18 OUT212 JMP17 DWG: M300G095 Figure 5.27: Jumper, Connector, and Major Component Locations on the SEL-300G Relay Extra I/O Board (Model 0300G_1, Screw Terminal Block Version) Date Code 20060731 SEL-300G Instruction Manual...
Page 283 OUT205 OUT206 OUT207 OUT208 OUT209 JMP20 OUT210 JMP19 OUT211 JMP18 OUT212 JMP17 DWG: M300G257 Figure 5.28: Jumper, Connector, and Major Component Locations on the SEL-300G Relay Extra I/O Board (Model 0300G_Y, Plug-In Connector Version) SEL-300G Instruction Manual Date Code 20060731...
Page 284: Output Contact Jumpers
An extra alarm output contact can be had for all the SEL-300G models without the addition of any external hardware. The output contact next to the dedicated ALARM output contact can be converted to operate as an “extra alarm”...
Page 285: Password And Breaker Jumpers
Table 5.5: Password and Breaker Jumper Positions for Standard Relay Shipments SEL-300G Relay Password Jumper/Position Breaker Jumper/Position Reference Model Number (standard relay shipments) (standard relay shipments) Figures All Models JMP6-A = OFF JMP6-B = ON Figure 5.26 SEL-300G Instruction Manual Date Code 20060731...
Page 286: Eia-232 Serial Port Voltage Jumpers
Table 5.7: EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments SEL-300G Relay EIA-232 Serial EIA-232 Serial Model Number Port 2 (rear panel) Port 3 (rear panel) Reference Figure All Models JMP2 = OFF JMP1 = OFF Figure 5.26 Date Code 20060731 SEL-300G Instruction Manual...
Page 287: Clock Battery
Reassemble the relay as described in Accessing the Relay Main Board (All Models) and Extra I/O Board (Models 0300G_1 and 0300G_Y). Set the relay date and time via serial communications port or front panel (see Section 10: Serial Port Communications and Commands or Section 9: Front-Panel Operation, respectively). SEL-300G Instruction Manual Date Code 20060731...
Page 289 Modify Settings via the Front Panel .....................6-6 Settings Sheets ..........................6-9 TABLES Table 6.1: Serial Port SET Commands ....................6-1 Table 6.2: SET Command Editing Keystrokes..................6-3 Table 6.3: Setting Interdependency Error Messages ................6-4 FIGURES Figure 6.1: Front-Panel SET Pushbutton Options Setting Sheets............6-8 SEL-300G Instruction Manual Date Code 20060731...
Page 291: Enter Relay Settings
Enter Relay Settings SECTION 6: ENTER RELAY SETTINGS NTRODUCTION The SEL-300G Relay stores settings you enter in nonvolatile memory. Settings are divided into the following four setting classes: 1. Group 2. Global 3. Port p (where p = F, 1, 2, or 3) 4.
Page 292: Communication Setup
When you issue the SET command, the relay presents a list of settings, one at a time. Enter a new setting, or press <Enter> to accept the existing setting. Editing keystrokes are shown in Table 6.2. Date Code 20060731 SEL-300G Instruction Manual...
Page 293: Setting Entry Error Messages
As you enter relay settings, the relay checks the setting entered against the setting’s own range, as published on the relay setting sheet. If any setting entered falls outside its range, the relay immediately responds ‘Out of Range’ and prompts you to reenter the setting. SEL-300G Instruction Manual Date Code 20060731...
Page 294 87N1P must be ≥ 0.02*In*CTR/CTRN Ground Differential Increase the referenced settings to 87N2P must be ≥ 0.02*In*CTR/CTRN Function satisfy the requirement shown in the error message. (In = Nominal Secondary Input Current, 1 or 5 A.) Date Code 20060731 SEL-300G Instruction Manual...
Page 295 Adjust the Forward and the Reverse ≤ 100.1 Ohms Single and Double Reach so that the sum of the two is Blinder Schemes (5 A either equal to or less than 100.1 relays) Ohms. SEL-300G Instruction Manual Date Code 20060731...
Page 296 However, modifications to element pickup and time-delay settings may be made quickly and easily using the front panel. Date Code 20060731 SEL-300G Instruction Manual...
Page 297 To save your modifications and enable the relay with your new settings, press the SELECT pushbutton with underscore beneath the Y in Yes. To exit without saving, press the Right arrow pushbutton to move the underscore beneath the N in No, then press the SELECT pushbutton. SEL-300G Instruction Manual Date Code 20060731...
Page 298 Enter Relay Settings Figure 6.1: Front-Panel SET Pushbutton Options Setting Sheets Date Code 20060731 SEL-300G Instruction Manual...
Page 299 Enable Ground Differential Protection (Y, N) [Model 300G0, 300G2] E87N = ® Enable SEL Control Equation Variables (0–16) ESV = OGIC Enable Set/Reset Latch Variables (0–16) ESL = Enable Demand Metering (THM, ROL) EDEM = SEL-300G Instruction Manual Date Code 20060731...
Page 300 (OFF, 0.1–100.0 Ohms {5 A model}; OFF, 0.5–500.0 Ohms {1 A model}) Z2C = Zone 2 Compensator Offset (0.0–10.0 Ohms {5 A model}; 0.0–50.0 Ohms {1 A model}) (hidden when Z2C = OFF) Z2CO = SEL-300G Instruction Manual Date Code 20060731...
Page 301 Voltage Ratio Correction Factor (0.500–2.000) 25RCF = Generator Voltage High Required (Y, N) (hidden when 25VDIF = OFF) GENV+ = Minimum Slip Frequency (–1.00 to 0.99 Hz) 25SLO = Maximum Slip Frequency (–0.99 to 1.00 Hz) 25SHI = SEL-300G Instruction Manual Date Code 20060731...
Page 302 Zone 2 Pickup Time Delay (0.00–400.00 s) (hidden when 40Z2P = OFF) 40Z2D = Zone 2 Directional Superv. Angle (–20.0°–0.0°) (hidden when 40Z2P = OFF or 40XD2 < 0) 40DIR = 40 Element Torque Control (SEL control equation) OGIC 40ZTC = SEL-300G Instruction Manual Date Code 20060731...
Page 303 Level 1 Phase O/C Time Delay (0.00–400.00 s) (hidden when 50H1P = OFF) 50H1D = Level 2 A-Phase O/C Pickup (OFF, 0.25–100.00 A {5 A model}; OFF, 0.05–20.00 A {1 A model}) 50H2PA = SEL-300G Instruction Manual Date Code 20060731...
Page 304 (OFF, 0.50–16.00 A {5 A model}; OFF, 0.10–3.20 A {1 A model}) 51GP = Residual Time-O/C Curve (U1–U5, C1–C5) (hidden when 51GP = OFF) 51GC = Residual Time-O/C Time Dial (0.50–15.00, U curves; 0.05–1.00, C curves) (hidden when 51GP = OFF) 51GTD = SEL-300G Instruction Manual Date Code 20060731...
Page 305: Settings Sheets
59G1P = Level 2 Residual O/V Pickup (OFF, 0.0–200.0 V) 59G2P = (hidden when DELTA_Y = D) Negative-Sequence (V2) O/V Pickup (OFF, 0.0–200.0 V) 59QP = Positive-Sequence (V1) O/V Pickup (OFF, 0.0–200.0 V) 59V1P = SEL-300G Instruction Manual Date Code 20060731...
Page 306 (0.25–30.00 A {5 A model}; 0.05–6.00 A {1 A model}) 50ABC = 78 Element Torque Control (SEL control equation) OGIC OOSTC = If E78 = 2B, the following settings will apply: Forward Reach Reactance 78FWD = SEL-300G Instruction Manual Date Code 20060731...
Page 307 (hidden when E81AC < 3) Band 3 Accumulator Limit Time (0.01–6000.00 s) (hidden when E81AC < 3) TBND3 = Lower Frequency Limit of Band 4 (20.0–70.0 Hz) LBND4 = (hidden when E81AC < 4) SEL-300G Instruction Manual Date Code 20060731...
Page 308 ⋅ O87P ≥ 0.2 A {5 A model} Note: ⋅ O87P ≥ 0.04 A {1 A model} O87P = Restraint Slope 1 Percentage (5–100%) SLP1 = Restraint Slope 2 Percentage (OFF, 50–200%) SLP2 = SEL-300G Instruction Manual Date Code 20060731...
Page 309 RTD Type (PT100, NI100, NI120, CU10) RTD12TY = RTD Trip Temperature (OFF, 32° to 482°F or 0° to 250°C) TRTMP1 = RTD Alarm Temperature (OFF, 32° to 482°F or 0° to 250°C) ALTMP1 = SEL-300G Instruction Manual Date Code 20060731...
Page 310 NDEMP = Residual Ground Pickup (OFF, 0.50–16.00 A {5 A model}; OFF, 0.10–3.20 A {1 A model}) GDEMP = Negative-Sequence Pickup (OFF, 0.50–16.00 A {5 A model}; OFF, 0.10–3.20 A {1 A model}) QDEMP = SEL-300G Instruction Manual Date Code 20060731...
Page 311 SV7 Pickup Time (0.00–3000.00 s) SV7PU = SV7 Dropout Time (0.00–3000.00 s) SV7DO = Control Equation Variable SV8 OGIC SV8 = SV8 Pickup Time (0.00–3000.00 s) SV8PU = SV8 Dropout Time (0.00–3000.00 s) SV8DO = SEL-300G Instruction Manual Date Code 20060731...
Page 312 OGIC RST1 = Set Latch Bit LT2 (SEL control equation) OGIC SET2 = Reset Latch Bit LT2 (SEL control equation) OGIC RST2 = Set Latch Bit LT3 (SEL control equation) OGIC SET3 = SEL-300G Instruction Manual Date Code 20060731...
Page 313 OGIC SET13 = Reset Latch Bit LT13 (SEL control equation) OGIC RST13 = Set Latch Bit LT14 (SEL control equation) OGIC SET14 = Reset Latch Bit LT14 (SEL control equation) OGIC RST14 = SEL-300G Instruction Manual Date Code 20060731...
Page 314 Close Enable Equation (SEL control equation) OGIC CLEN = Close Initiate Equation (SEL control equation) OGIC CL = Unlatch Close Equation ULCL = Close Dwell Timer (0.00–1.00 s) CLSD = Event Trigger Equation ER = SEL-300G Instruction Manual Date Code 20060731...
Page 315 Output Contact OUT209 (SEL control equation) OGIC OUT209 = Output Contact OUT210 (SEL control equation) OGIC OUT210 = Output Contact OUT211 (SEL control equation) OGIC OUT211 = Output Contact OUT212 (SEL control equation) OGIC OUT212 = SEL-300G Instruction Manual Date Code 20060731...
Page 316 Input Debounce Time (0.00–1.00 cycle in 0.25-cycle steps) IN103D = Input Debounce Time (0.00–1.00 cycle in 0.25-cycle steps) IN104D = Input Debounce Time (0.00–1.00 cycle in 0.25-cycle steps) IN105D = Input Debounce Time (0.00–1.00 cycle in 0.25-cycle steps) IN106D = SEL-300G Instruction Manual Date Code 20060731...
Page 317 (setting hidden if NLB4 = NA) Set Local Bit LB4 Label (7 characters) (setting hidden if NLB4 = NA) SLB4 = Pulse Local Bit LB4 Label (7 characters) (setting hidden if NLB4 = NA) PLB4 = SEL-300G Instruction Manual Date Code 20060731...
Page 318 (setting hidden if NLB10 = NA) CLB10 = Set Local Bit LB10 Label (7 characters) SLB10 = (setting hidden if NLB10 = NA) Pulse Local Bit LB10 Label (7 characters) (setting hidden if NLB10 = NA) PLB10 = SEL-300G Instruction Manual Date Code 20060731...
Page 319 (setting hidden if NLB16 = NA) CLB16 = Set Local Bit LB16 Label (7 characters) SLB16 = (setting hidden if NLB16 = NA) Pulse Local Bit LB16 Label (7 characters) (setting hidden if NLB16 = NA) PLB16 = SEL-300G Instruction Manual Date Code 20060731...
Page 320 Display if DP7 = logical 0 (16 characters) DP7_0 = Display Point DP8 (SEL control equation) OGIC DP8 = Display if DP8 = logical 1 (16 characters) DP8_1 = Display if DP8 = logical 0 (16 characters) DP8_0 = SEL-300G Instruction Manual Date Code 20060731...
Page 321 Display if DP15 = logical 0 (16 characters) DP15_0 = Display Point DP16 (SEL control equation) OGIC DP16 = Display if DP16 = logical 1 (16 characters) DP16_1 = Display if DP16 = logical 0 (16 characters) DP16_0 = SEL-300G Instruction Manual Date Code 20060731...
Page 322 ALIAS3 = ALIAS4 = ALIAS5 = ALIAS6 = ALIAS7 = ALIAS8 = ALIAS9 = ALIAS10 = ALIAS11 = ALIAS12 = ALIAS13 = ALIAS14 = ALIAS15 = ALIAS16 = ALIAS17 = ALIAS18 = ALIAS19 = SEL-300G Instruction Manual Date Code 20060731...
Page 323 ALIAS24 = ALIAS25 = ALIAS26 = ALIAS27 = ALIAS28 = ALIAS29 = ALIAS30 = ALIAS31 = ALIAS32 = ALIAS33 = ALIAS34 = ALIAS35 = ALIAS36 = ALIAS37 = ALIAS38 = ALIAS39 = ALIAS40 = SEL-300G Instruction Manual Date Code 20060731...
Page 324 Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-300G Relay Fast Operate commands. RTSCTS setting is hidden for Port 1 (EIA-485) and the default value is N.
Page 325 Current Differential (87) Elements ...................7-102 Differential Element Commissioning Worksheet ..............7-111 Check List .........................7-112 TABLES Table 7.1: Communication Cables to Connect the SEL-300G Relay to Other Devices......7-10 Table 7.2: SET Command Editing Keystrokes..................7-13 Table 7.3: SEL-300G Relay Contact I/O Viewed by the TAR Command ..........7-15 Table 7.4:...
Page 326 Figure 7.26: Neutral Voltage Test Connection, 64G1................7-82 Figure 7.27: 64G2 Element Test Connections, 64RAT ≠ 0 ..............7-84 Figure 7.28: 64G2 Element Test Connections, 64RAT = 0 (DELTA_Y = D) ........7-87 Figure 7.29: Out-of-Step Single Blinder Element, Diameter and Blinder Tests........7-91 Date Code 20060731 SEL-300G Instruction Manual...
Page 327 Relay Commissioning Figure 7.30: Out-of-Step Double Blinder Element, Diameter and Blinder Tests ........7-95 Figure 7.31: 87N Test Connections......................7-99 Figure 7.32: Percentage Restraint Differential Characteristic...............7-103 Figure 7.33: Test Connections for Parallel Current Sources..............7-110 SEL-300G Instruction Manual Date Code 20060731...
Page 329: Relay Commissioning
Relay Commissioning SECTION 7: RELAY COMMISSIONING NTRODUCTION This section provides guidelines for commissioning and testing the SEL-300G Relay. Included are discussions on testing philosophies, methods, and tools, plus detailed test procedures for selected protection functions. OMMISSIONING ESTING HILOSOPHY Commissioning testing is performed when a protective relay is installed to: Ensure that all system ac and dc connections are correct.
Page 330: Low-Level Test Interface
Operation. Low-Level Test Interface The SEL-300G has a low-level test interface between the calibrated input module and the separately-calibrated processing module. You may test the relay in either of two ways: conventionally, by applying ac current and voltage signals to the relay inputs or by applying low magnitude ac voltage signals to the low-level test interface.
Page 331 Figure 7.1: Low-Level Test Interface, 0300G0 Figure 7.2: Low-Level Test Interface, 0300G1 Figure 7.3: Low-Level Test Interface, 0300G2 Figure 7.4: Low-Level Test Interface, 0300G3 SEL-300G Instruction Manual Date Code 20060731...
Page 332: Test Methods
The examples below show the settings necessary to route the phase time-overcurrent element 51PT to the output contacts and the SER. The 51PT element, like many in the SEL-300G, is controlled by enable settings and/or torque-control settings. To enable the 51PT element, set the...
Page 333 Do not forget to reenter the correct relay settings when you are ready to place the relay in service. See Section 11: Event Reports and SER Functions for more information regarding the SER function and associated serial port commands. SEL-300G Instruction Manual Date Code 20060731...
Page 334: Relay Commissioning Procedure
ROCEDURE Introduction The procedure below is intended to help you enter settings into an SEL-300G Relay and verify that the SEL-300G is properly connected. Steps later in the procedure call for operation of the protected generator at no load, light load, and full load to verify ac connections and take measurements for calculation of 100 percent stator ground fault protection elements.
Page 335: Commissioning Procedure
Contact Output DC Polarity Checks STEP 14 Verify Contact Output Operation Correct Current Connections STEP 6 Remove AC Signals STEP 7 Energize Relay DWG: M300G211 Figure 7.5: Relay Commissioning Flowchart (refer to text for detailed instructions) SEL-300G Instruction Manual Date Code 20060731...
Page 336 Relay Commissioning Step 1. Ensure that dc power is removed from the SEL-300G dc circuits by opening the appropriate dc breaker or removing dc fuses. Step 2. Verify the accuracy and correctness of the ac and dc connections by performing point-to-point continuity checks on the circuits associated with the SEL-300G.
Page 337 SEL world wide web site at http://www.selinc.com. Serial Port 1 on all the SEL-300G models is an EIA-485 port (4-wire). The Serial Port 1 plug-in connector accepts wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver.
Page 338 ST connectors A corresponding main board jumper must be installed to power the StarComm Modem with +5 Vdc (0.5 A limit) from the SEL-300G. See Figure 5.25 and Table 5.7. Data Terminal Equipment Data Communication Equipment SEL part number C805Z010VVX0003 (3 meters).
Page 339 Relay Commissioning 7-11 SEL-300G to Computer Cable C227A SEL-300G Relay 9-Pin DTE Device 9-Pin Male 25-Pin Female “D” Subconnector “D” Subconnector Cable C234A SEL-300G Relay 9-Pin DTE Device 9-Pin Male 9-Pin Female “D” Subconnector “D” Subconnector Step 9. SEL relays respond to ASCII text commands entered on the relay serial port. PC ®...
Page 340 ALARM contact for one second after a successful Level B or Level 2 access. If access is denied, the ALARM contact closes for one second. Enter the 2AC command at the Access Level 1 prompt: =>2AC <Enter> Date Code 20060731 SEL-300G Instruction Manual...
Page 341 Apply rated ac voltage (67 Vln, 120 Vll) and current (1 A or 5 A) to the relay phase voltage and current inputs. If a three-phase test source is used, set the source phase angles as shown in Figure 7.7: SEL-300G Instruction Manual Date Code 20060731...
Page 342 Vab = –30° set angle Vcb = +90° set angle Vcb = –90° 60° 60° PHROT = ABC PHROT = ACB DWG: M300G200 Figure 7.8: Open-Delta AC Potential Connection Test Voltage Signals Date Code 20060731 SEL-300G Instruction Manual...
Page 343 IN201 through IN208 of SEL-300G_1 and SEL-300G_Y Relays using TAR 40. When input verification is complete, press the TARGET RESET or EXIT pushbutton to reset the front-panel target LEDs. Table 7.3: SEL-300G Relay Contact I/O Viewed by the TAR Command LOP 60 TRIP...
Page 344 The positive-sequence voltage magnitude, V1, should be nearly equal to VA, VB, and VC. The negative-sequence voltage magnitude, V2, and zero-sequence voltage magnitude, 3V0, should both be nearly zero. Date Code 20060731 SEL-300G Instruction Manual...
Page 345 To prepare the relay for operation, it is helpful to clear the relay data buffers. This prevents data generated during installation testing from being confused with operational data collected later. Execute the relay commands in Table 7.4 to clear specific data. SEL-300G Instruction Manual Date Code 20060731...
Page 346: Protection Element Tests
Three Voltage Source and Three Current Source Connections Figure 7.9 shows connections to use when three voltage sources and three current sources are available. Figure 7.10 shows connections to use when two voltage sources and three current sources are available. Date Code 20060731 SEL-300G Instruction Manual...
Page 347: Distance (21) Element
Figure 7.10: Two Voltage Source and Three Current Source Test Connections Distance (21) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source with adjustable magnitude and phase angle. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 348 The voltage and current phase shift introduced by a delta-wye step-up transformer changes the voltage and current signals presented to the SEL-300G Relay during a phase-phase fault on the system. The effect is illustrated by Figure 7.11 and Figure 7.12.
Page 349 Figure 7.12: Generator Voltage and Current Relationships During a System Three-Phase Fault The Z1CMP and Z2CMP settings instruct the SEL-300G to compensate for the effects of the delta-wye step-up transformer when the mho distance element is used. Compensator distance elements inherently compensate for the step-up transformer. The element pickup accuracy test below describes a mho distance three-phase test.
Page 350 Ib = 120 – MTAn° set angle Ic = –120 – MTAn° To predict the test current magnitude where the element will operate, use one of the following equations: When DELTA_Y = Y: A secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 351 Gradually increase the magnitude of all three phase currents. Record the current magnitude applied to the relay when the instantaneous element under test asserts. 21P1P asserted when phase current magnitude equaled: ________ A secondary (Itest). SEL-300G Instruction Manual Date Code 20060731...
Page 352 Configure the current test sources to apply balanced, three-phase currents with magnitudes equal to 1.1 • Itest, as measured by the 21P1P accuracy test performed above. Step 2. Expect 21P1T to assert Z1D seconds after the test signals are applied. Date Code 20060731 SEL-300G Instruction Manual...
Page 353: Volts/Hertz (24) Element
% error = _________ Repeat the test for Zone 2, if desired. Volts/Hertz (24) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage Test Source with adjustable magnitude and phase angle. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 354 24D2D2 = _______ seconds (definite-time delay 2; shown if 24CCS = DD or ID) 24CR = _________ seconds (24C2 element linear reset time) 24TC = __________________________________________________________ Torque-Control Setting (elements are enabled when 24TC = logical 1) Date Code 20060731 SEL-300G Instruction Manual...
Page 355 If you prefer to monitor a contact closure to indicate element pickup, use the Access Level 2 SET command to program an output contact to close when the element under test picks up. SEL-300G Instruction Manual Date Code 20060731...
Page 356 Configure the voltage test source to apply balanced voltages with magnitudes equal to 1.1 • Vtest, as measured by the 24D1P test performed above. Step 2. Expect 24D1T to assert 24D1D seconds after the test signals are applied. Date Code 20060731 SEL-300G Instruction Manual...
Page 357 Figure 7.13. This test procedure uses up to four test points to verify that the definite-time delays are operating properly. Test 4 (opt) Test 2 24D2P2 Test 3 (opt) Test 1 24D2P1 DWG: M300G105a Figure 7.13: 24C2 Time-Delay Test Points, 24CCS = DD SEL-300G Instruction Manual Date Code 20060731...
Page 358 Test Point 1, Test Point 2, and the optional Test Points 3 and 4, if desired, using the equations below. Select TestPoint1 such that: 24D2P1 < TestPoint1 < 24D2P2 TestPoint1 • VNOM Vtest1 = V secondary Vtest1 = ___________ V secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 359 ⎟ % error1 and error3 = • ⎝ 24D2D1 ⎠ − ⎛ ⎞ Ttestn 24D2D2 ⎜ ⎟ % error2 and error4 = • ⎝ 24D2D2 ⎠ % error1 = _________ % error2 = _________ SEL-300G Instruction Manual Date Code 20060731...
Page 360 • Vtest1 = ___________ V secondary • 24IP • VNOM Vtest2 = V secondary • Vtest2 = ___________ V secondary • 24IP • VNOM Vtest3 = V secondary • Vtest3 = ___________ V secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 361 The Top n equation above assumes that the test voltage frequency is equal to FNOM. Step 2. Based on the two timing test descriptions above (SER or output contact driving an external timer), select one method and make the settings and connections necessary to SEL-300G Instruction Manual Date Code 20060731...
Page 362 When DELTA_Y = Y, calculate the test voltage magnitudes for TestPoint1, TestPoint2, and TestPoint3 using the equations below. TestPoints 1, 2, and 3 should be selected such that they are on the inverse-time curve as shown in Figure 7.15. Date Code 20060731 SEL-300G Instruction Manual...
Page 363 Point 2, and Test Point 3 using the equations below. TestPoints 1, 2, and 3 should be selected such that they are on the inverse-time curve as shown in Figure 7.15. TestPoint1 = 1.1 • (24IP) SEL-300G Instruction Manual Date Code 20060731...
Page 364 Based on the two timing test descriptions above (SER or output contact driving an external timer), select one method and make the settings and connections necessary to support the selection. Configure the voltage test source to apply balanced, three-phase voltages with magnitudes equal to Vtest1. Date Code 20060731 SEL-300G Instruction Manual...
Page 365: Synchronism Checking (25) Function
% error3 = _________ % error4 = _________ Synchronism Checking (25) Function Equipment Needed • SEL-300G Relay under test. • Three- or Four-Phase AC Voltage Test Source with adjustable magnitude, phase angle, and frequency. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 366 (breaker closing time) CFANGL = ______ degrees (breaker close failure angle) 27VSP = ________ volts secondary (dead-bus undervoltage pickup) BSYNCH = __________________________________________________ Block Synch Check (function is blocked when BSYNCH = logical 1) Date Code 20060731 SEL-300G Instruction Manual...
Page 367 DELTA_Y = Y ⎝ ⎠ PHROT = B(C) -120 SYNCP = VAB ⋅ ⋅ COMPA = 0 ⋅ ⋅ − ⎛ ⎞ VTestP ⋅ ⎟ ⎜ errorP DELTA_Y = Y ⎝ ⎠ PHROT = B -150 SEL-300G Instruction Manual Date Code 20060731...
Page 368 SYNCP = VA ⋅ COMPA = 0 DELTA_Y = D ⎛ ⎞ ⎛ VTestP ⎞ ⎜ ⋅ − ⎟ ⎜ ⎟ ⎜ ⎝ ⎠ ⎟ PHROT = B ⋅ errorP ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ Date Code 20060731 SEL-300G Instruction Manual...
Page 369 SYNCP = VC ⋅ COMPA = 0 DELTA_Y = D ⎛ ⎞ ⎛ ⎞ VTestP ⎜ ⋅ − ⎟ ⎜ ⎟ ⎝ ⎠ ⎜ ⎟ PHROT = B ⋅ errorP ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ SEL-300G Instruction Manual Date Code 20060731...
Page 370 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button several times to display Relay Word Row 36, which contains the synch-check voltage element indications as shown in Table 7.8. Date Code 20060731 SEL-300G Instruction Manual...
Page 371 Step 1. Configure the voltage test sources to apply balanced, three-phase voltages and synch voltage with magnitudes and phase angles as used in the voltage element accuracy test. SEL-300G Instruction Manual Date Code 20060731...
Page 372 Step 2. Set the synch voltage source frequency equal to the FNOM nominal frequency setting. The SEL-300G Relay defines slip frequency positive when the generator frequency is greater than system frequency. The slip frequency element, SF, asserts when: 25SLO < (Generator Frequency) – (System Frequency) < 25SHI Hz...
Page 373 Step 2. The SEL-300G Relay defines voltage phase angle difference positive when VP leads VS. The 25A1, 25A2 angle elements use the magnitude of the phase angle difference rather than the absolute phase angle difference. That is, setting 25ANG2 = 10°...
Page 374: Undervoltage (27) Elements
DELTA_Y = D, connect the voltage sources according to Figure 7.10. Current sources are not needed for this test. Basic Element Operation The SEL-300G offers a variety of phase, positive-sequence, and phase-to-phase undervoltage elements. See Section 2: Relay Element Settings for complete descriptions of the available under- and overvoltage elements.
Page 375 When DELTA_Y = D, use the equation below to calculate the 27V1 element error: ⎛ ⎞ Vtest − ⎜ ⎟ ⎜ ⎟ ⋅ error ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ error = _________ % SEL-300G Instruction Manual Date Code 20060731...
Page 376: Reverse/Low-Forward Power (32) Element
⎠ error = _________ % Reverse/Low-Forward Power (32) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source, with adjustable magnitude and phase angle. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 377 Use the following equation to predict the current magnitude where the element will operate. Iopn = A secondary • INOM Iop1 = ________ A secondary Iop2 = ________ A secondary Table 7.11 summarizes the phase angle and operate relationships represented in Figure 7.16. SEL-300G Instruction Manual Date Code 20060731...
Page 378 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button four times to display Relay Word Row 4, which contains the reverse/low-forward power element indications, as shown in Table 7.12. Date Code 20060731 SEL-300G Instruction Manual...
Page 379 Use the equation below to calculate the element error: ⎛ ⎞ Itestn − ⎜ ⎟ INOM ⎜ ⎟ errorn • ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ error1 = _________ % error2 = _________ % SEL-300G Instruction Manual Date Code 20060731...
Page 380 TAR in the LCD display, then press SELECT. This command sequence causes the LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button four times to display Relay Word Date Code 20060731 SEL-300G Instruction Manual...
Page 381 The object of the element timing accuracy test is to apply predefined signals to the relay and measure the element response time. There are two methods available to measure the element response time, SER review and output contact operation. These methods are described in Test Methods beginning on page 7-4. SEL-300G Instruction Manual Date Code 20060731...
Page 382: Loss-Of-Field (40) Element
= _________ % error2 = _________ % Loss-of-Field (40) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source, with adjustable magnitude and phase angle. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 383 Figure 7.7 or Figure 7.8. Set the test source current phase angles as follows: When setting PHROT = ABC, set angle Ia = 90° set angle Ib = –30° set angle Ic = –150° SEL-300G Instruction Manual Date Code 20060731...
Page 384 TestXA n is calculated using the following equation: Test XBn 40XDn 40Zn Relay Test XAn 40ZnP Word bit Asserted DWG: M300G109a Figure 7.17: Loss-of-Field Element Diameter and Offset Tests, 40XD2 < 0 Date Code 20060731 SEL-300G Instruction Manual...
Page 385 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button five times to display Relay Word Row 5, which contains the loss-of-field element indications, as shown in Table 7.13. SEL-300G Instruction Manual Date Code 20060731...
Page 386 When 40XD2 is positive, this second point on the mho circle is not available to test. Step 5. Use the equations below to calculate the element error: ⎛ ⎞ − − ⎜ ⎟ ItestXAn ⎜ ⎟ ⋅ errorXAn (DELTA_Y = Y) − ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ Date Code 20060731 SEL-300G Instruction Manual...
Page 387 Select an angle δ to define a point on the circle (δ = 30° is a good start). δ = _________ degrees Calculate x and y: ⋅ δ sin( x = _________ ohms ⋅ δ cos( y = _________ ohms SEL-300G Instruction Manual Date Code 20060731...
Page 388 Ic = –150 ° + Θ° set angle Ia = 90° + Θ° When setting PHROT = ACB, set angle Ib = –150° + Θ° set angle Ic = –30° + Θ° Date Code 20060731 SEL-300G Instruction Manual...
Page 389 The 40Z1T Relay Word bit asserts 40Z1D seconds after the 40Z1 element asserts. The Element Pickup Accuracy Test verified the accuracy of the loss-of-field element offset and diameter settings. This test applies signals within each zone and measures the element definite operating time. SEL-300G Instruction Manual Date Code 20060731...
Page 390: Negative-Sequence Overcurrent (46) Element
= _________ % error2 = _________ % Negative-Sequence Overcurrent (46) Element Equipment Needed • SEL-300G Relay under test. • Single-Phase AC Current Test Source, with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 391 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button several times to display Relay Word Row 6, which contains the negative-sequence overcurrent element indications, as shown in Table 7.14. SEL-300G Instruction Manual Date Code 20060731...
Page 392 The object of the Element Timing Accuracy Test is to apply predefined signals to the relay and measure the element response time. There are two methods available to measure the element response time, SER review and output contact operation. These methods are described in Test Methods beginning on page 7-4. Date Code 20060731 SEL-300G Instruction Manual...
Page 393 46Q2 Inverse-Time Accuracy Test The 46Q2 negative-sequence overcurrent element operates as an inverse-time delayed element, as shown in Figure 7.21. This test procedure uses three test points to verify that the element is operating properly. SEL-300G Instruction Manual Date Code 20060731...
Page 394 Based on the two timing test descriptions above (SER or output contact driving an external timer), select one method and make the settings and connections necessary to support the selection. Configure the current test source to apply single-phase current with a magnitude equal to Itest1. Date Code 20060731 SEL-300G Instruction Manual...
Page 395: Overcurrent (50/51) Elements
= _________ % error3 = _________ % Overcurrent (50/51) Elements Equipment Needed • SEL-300G Relay under test. • Single-Phase AC Current Test Source, with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 396 The definite-time delayed overcurrent element Relay Word bit asserts a settable time after the measured current exceeds the pickup setting. The Element Pickup Accuracy Test verified the accuracy of the pickup setting. This test applies signals greater than the pickup and measures the element definite operating time. Date Code 20060731 SEL-300G Instruction Manual...
Page 397 Apply the test current and record the element operating time, Ttest1. Remove the test current for a few minutes to permit the element to fully reset if electromechanical reset is enabled for the element under test. Repeat using Itest2 and Itest3. SEL-300G Instruction Manual Date Code 20060731...
Page 398: Voltage Controlled Time-Overcurrent (51C) Element
= _________ % error3 = _________ % Voltage Controlled Time-Overcurrent (51C) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase Voltage plus a Single-Phase Current AC Test Source with adjustable magnitude and phase angle between the signals. •...
Page 399 51CC = _________ (element curve selection) 51CTD = ________ (element time-dial selection) 51CRS = ________ (electromechanical reset selection) 51CTC = 27PP1 • !60LOP Torque-Control Setting (element is enabled when 51CTC = logical 1; typical setting shown) SEL-300G Instruction Manual Date Code 20060731...
Page 400 Level 2 SET command to program an output contact to close when the element under test picks up. Step 4. Gradually increase the magnitude of the test current. Record the current magnitude applied to the relay when the instantaneous element under test asserts. Date Code 20060731 SEL-300G Instruction Manual...
Page 401 Configure the current test source to apply single-phase current with magnitude equal to Itest1. Apply balanced voltages as in Step 3 of the element pickup accuracy test. SEL-300G Instruction Manual Date Code 20060731...
Page 402: Voltage Restrained Time-Overcurrent (51V) Element
= _________ % error3 = _________ % Voltage Restrained Time-Overcurrent (51V) Element Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source with adjustable magnitude and phase angle. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 403 Vop1 = _______ V secondary ⋅ A secondary VNOM ⋅ V secondary (DELTA_Y = Y) ⋅ VNOM V secondary (DELTA_Y = D) Iop2 = ________ A secondary Vop2 = _______ V secondary ⋅ A secondary SEL-300G Instruction Manual Date Code 20060731...
Page 404 Apply balanced 3-phase voltage with magnitude Vop1. Gradually increase the magnitude of the balanced 3-phase test current. Record the current magnitude applied to the relay when the 51V element asserts. Itest1 = ________ A secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 405 Choose one of the two timing test methods (SER or output contact driving an external timer), and make the settings and connections necessary to support the selection. Apply balanced 3-phase currents with magnitudes equal to Itest1. Apply balanced SEL-300G Instruction Manual Date Code 20060731...
Page 406 ⎞ ⋅ ⎟ ⋅ ⎜ Itest A secondary (DELTA_Y = Y) ⎝ VNOM ⎠ ⎛ ⎞ ⋅ ⎟ ⋅ Itest ⎜ A secondary (DELTA_Y = D) ⎝ VNOM ⎠ Itest3 = ___________ A secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 407: Overvoltage (59) Elements
Vr (DELTA_Y = D). These test values will result in the same expected operate times calculated in Step 1 above. Overvoltage (59) Elements Equipment Needed • SEL-300G Relay under test. • Single-Phase AC Voltage Test Source with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 408 Relay Word rows. Press the Down arrow button several times to display the Relay Word row which contains the pickup indication for the voltage element under test. See TARGET Command in Section 10: Serial Port Communications and Commands for additional details. Date Code 20060731 SEL-300G Instruction Manual...
Page 409: 100% Stator Ground (64) Element
= _________ % 100% Stator Ground (64) Element Equipment Needed • SEL-300G Relay under test. • Single-Phase AC Voltage Test Source with adjustable magnitude for 64G1 element test. • Two Single-Phase AC Voltage Test Sources with adjustable magnitude and frequency for 64G2 element test (64RAT ≠...
Page 410 The 64G1 element picks up when the neutral voltage exceeds the 64G1P setting. When performing this test manually, it is easy to determine when an instantaneous element picks up by viewing the element state directly using the front-panel TARGET Date Code 20060731 SEL-300G Instruction Manual...
Page 411 The 64G1T Relay Word bit asserts 64G1D seconds after the measured neutral voltage exceeds the 64G1P pickup setting. The Element Pickup Accuracy Test verified the accuracy of the pickup settings. This test only measures the element definite operating time. SEL-300G Instruction Manual Date Code 20060731...
Page 412 To use VA, a composite source made up of rated fundamental frequency voltage and third- harmonic frequency voltage is recommended. DWG: M300G122 Two-Phase Voltage Sources Figure 7.27: 64G2 Element Test Connections, 64RAT ≠ 0 Date Code 20060731 SEL-300G Instruction Manual...
Page 413 Level 2 SET command to program an output contact to close when the element under test picks up. Step 4. Gradually decrease the neutral voltage magnitude. Record the test voltage applied to the relay when the 64G2 Relay Word bit asserts. VNtest = ________ volts SEL-300G Instruction Manual Date Code 20060731...
Page 414 Calculate the relay timing error using the equation: − ⎛ ⎞ Ttest ⋅ ⎟ ⎜ error ⎝ ⎠ error = _________ % 64G2 Element Operating Accuracy Test, 64RAT = 0 Step 1. Connect the voltage sources according to Figure 7.28. Date Code 20060731 SEL-300G Instruction Manual...
Page 415 Figure 7.7 or Figure 7.8, DELTA_Y = D. Set the neutral voltage test source frequency equal to 3 • FNOM. Set the magnitude of the test source connected to the VN input greater than the 64G2P setting. SEL-300G Instruction Manual Date Code 20060731...
Page 416 Step 3 above. Configure the neutral voltage test source to switch from the original magnitude to a voltage magnitude equal to 0.9 • Vtest volts, as determined in Step 4, above. Date Code 20060731 SEL-300G Instruction Manual...
Page 417: Out-Of-Step (78) Element-Single Blinder
= _________ % Out-of-Step (78) Element—Single Blinder Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source, with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 418 Ia = 90° set angle Ib = –30° set angle Ic = –150° When setting PHROT = ACB, set angle Ia = 90° set angle Ib = –150° set angle Ic = –30° Date Code 20060731 SEL-300G Instruction Manual...
Page 419 Itest78Z1 = ____________________ A secondary Step 5. Use the equations below to calculate the element error: ⎡ ⎤ − 78FWD setting ⎢ ⎣ ⎥ ⎦ Itest78Z1 ⋅ error78Z1 = 100% (DELTA_Y = Y) 78FWD setting SEL-300G Instruction Manual Date Code 20060731...
Page 420 78R1. Expected value: Iop78R1 = (DELTA_Y = Y) ohms Iop78R1 = (DELTA_Y = D) ⋅ ohms Expected Iop78R1 = ______ A secondary Date Code 20060731 SEL-300G Instruction Manual...
Page 421 78R1. For purposes of accuracy testing for 78R1, ignore assertions of other elements. Similarly, during the accuracy test for the 78R2 other elements such as 78R1 and 78Z1 will assert prior to the assertion of 78R2. SEL-300G Instruction Manual Date Code 20060731...
Page 422: Out-Of-Step (78) Element-Double Blinder
7-94 Relay Commissioning Out-of-Step (78) Element—Double Blinder Equipment Needed • SEL-300G Relay under test. • Two- or Three-Phase AC Voltage and Current Test Source, with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 423: Over/Underfrequency (81) Elements
The 78Z1 Element Operating Accuracy Test, 78R1, and 78R2 follows the same steps and procedure as listed in Out-of-Step (78) Element—Single Blinder on page 7-89. Over/underfrequency (81) Elements Equipment Needed • SEL-300G Relay under test. • Three-Phase AC Voltage Test Source with adjustable magnitude, phase angles, and frequency. •...
Page 424 Press the front-panel OTHER pushbutton, use the Down arrow button to underline the word TAR in the LCD display, then press SELECT. This command sequence causes the LCD display and lower deck of target LEDs to display individual Date Code 20060731 SEL-300G Instruction Manual...
Page 425 Pickup Accuracy Test verified the accuracy of the pickup settings. This test measures the element definite operating time. Step 1. Based on the two timing test descriptions above (SER or output contact driving an external timer), select one method and make the settings and connections necessary to SEL-300G Instruction Manual Date Code 20060731...
Page 426: Ground Differential (87N) Element
⎠ error = _________ % Ground Differential (87N) Element Equipment Needed • SEL-300G Relay under test. • Two AC Current Test Sources with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC-COM port to the relay.
Page 427 1. After the excessive current condition vanishes, the relay deasserts both Relay Word bits to logical 0. The 87N2P and 87N2T Relay Word bits operate similarly (see Section 13: Differential Element Settings for a complete description of the element). SEL-300G Instruction Manual Date Code 20060731...
Page 428 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button twice to display Relay Word Row 38, which contains the volts/hertz ground differential element indications as shown in Table 7.18. Date Code 20060731 SEL-300G Instruction Manual...
Page 429 ⋅ − ⎟ ⎜ Atest ⎟ ⎝ CTRN ⎠ ⎜ ⎟ ⋅ error ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ error = _________ % Step 5. Repeat Steps 3 and 4 for the 87N2P element. SEL-300G Instruction Manual Date Code 20060731...
Page 430: Current Differential (87) Elements
You may wish to test the 87N2D timer using the same procedure. Current Differential (87) Elements Equipment Needed • SEL-300G Relay under test. • Two Single-Phase AC Current Test Sources with adjustable magnitude. • PC with terminal emulation software and appropriate serial cable to connect the PC- COM port to the relay.
Page 431 A is selected from Table 7.19 when test current is applied to IA, IB, or IC. Replace A with B and TAP1 with TAPD in the Iop equation above if test current is applied to IA87, IB87, or IC87. SEL-300G Instruction Manual Date Code 20060731...
Page 432 Level 2 SET command to program an output contact to close when the element under test picks up. Step 4. Gradually increase the current magnitude. Record the test current applied to the relay when the 87U Relay Word bit asserts. Itest = ________ amps Date Code 20060731 SEL-300G Instruction Manual...
Page 433 LCD display and lower deck of target LEDs to display individual Relay Word rows. Press the Down arrow button several times to display Relay Word Row 33, which contains the 87R element indications, as shown in Table 7.21. SEL-300G Instruction Manual Date Code 20060731...
Page 434 TAP1 = _________ A (phase current input tap quantity) TAPD = _________ A (87-input tap quantity) O87P = _________ multiple of TAP (restrained element pickup setting) SLP1 = _________ % (restrained element slope 1 percentage) Date Code 20060731 SEL-300G Instruction Manual...
Page 435 Row 33, which contains the 87R element indications, as shown in Table 7.21. During the manual test, as you change the test current, you can see the Relay Word bits assert and deassert to indicate pickup and dropout of the respective elements. SEL-300G Instruction Manual Date Code 20060731...
Page 436 IRT > IRS1 IRT = __________ multiples of TAP The value of IOP corresponding to the selected IRT equals the following: − ⎛ ⎞ ⋅ ⋅ ⎜ ⎟ ⎝ ⎠ IOP = __________ multiples of TAP Date Code 20060731 SEL-300G Instruction Manual...
Page 437 Note: This test requires a current source capable of generating second-harmonic currents. This test verifies operation of the second-harmonic blocking function which is disabled when E87 = G or when E87 = T and PCT2 = OFF. SEL-300G Instruction Manual Date Code 20060731...
Page 438 Current Source 2 magnitude. Record the test current applied to the relay when the 87R Relay Word bit deasserts. The test current should closely equal the IA2 value calculated in Step 3. Itest = ________ amps Date Code 20060731 SEL-300G Instruction Manual...
Page 439 CT tap, per the CTR and CTRD settings. If mismatch remains on all three phases, check the CTR and CTRD settings to ensure that they are correct, per the actual CT ratio. SEL-300G Instruction Manual Date Code 20060731...
Page 440: Check List
Then, I87 should lead IW1 by 150°. If E87 = T TRCON = GEN, CTCON = DAB TRCON = DACY, CTCON = Y TRCON = YDAB, CTCON = Y Then, I87 should lag IW1 by 150°. Date Code 20060731 SEL-300G Instruction Manual...
Page 441 Maximum/Minimum Metering Updating and Storage............8-13 FIGURES Figure 8.1: Breaker Monitor Accumulates 10% Wear................8-6 Figure 8.2: Breaker Monitor Accumulates 25% Wear................8-7 Figure 8.3: Breaker Monitor Accumulates 50% Wear................8-8 Figure 8.4: Breaker Monitor Accumulates 100% Wear................8-9 SEL-300G Instruction Manual Date Code 20060731...
Page 443: Monitoring And Metering Functions
Maximum/Minimum Metering This section explains these functions in detail. ENERATOR PERATING TATISTICS The SEL-300G helps track the performance and utilization of the protected generator by tracking several generator operating statistics such as: • Total Generator Running Hours • Total Generator Stopped Hours •...
Page 444: Generator Accumulated I
Generator Accumulated I Because the detrimental mechanical effects of unbalance current on the generator are cumulative, the SEL-300G Relay records the accumulated I t experienced by the generator over time. The relay advances this time whenever the negative-sequence time-overcurrent element is picked up, as indicated by Relay Word bit 46Q2.
Page 445: Breaker Monitor
50 percent wear level to the 100 percent wear level. When the breaker maintenance curve reaches 100 percent for a particular phase, the percentage wear remains at 100 percent (even if additional current is interrupted), until reset by the BRE R SEL-300G Instruction Manual Date Code 20060731...
Page 446: Breaker Monitor Output
Relay Word bit BCWA asserts (BCWA = logical 1). Execution of the BRE R command resets the wear levels for all three phases back to 0 percent and consequently causes Relay Word bit BCWA to deassert (BCWA = logical 0). Date Code 20060731 SEL-300G Instruction Manual...
Page 447: Determination Of Relay Initiated Trips And Externally Initiated Trips
OGIC setting is: BKMON = TRIP1 Thus, any new assertion of BKMON will be deemed a relay trip, and the current and trip count information is accumulated under relay initiated trips (Int Trips). SEL-300G Instruction Manual Date Code 20060731...
Page 448 Monitoring and Metering Functions 100% 10,000 1000 kA Interrupted per DWG: M300G132 Operation Figure 8.1: Breaker Monitor Accumulates 10% Wear Date Code 20060731 SEL-300G Instruction Manual...
Page 449 Monitoring and Metering Functions 100% 10,000 1000 6 7 8 9 kA Interrupted per DWG: M300G133 Operation Figure 8.2: Breaker Monitor Accumulates 25% Wear SEL-300G Instruction Manual Date Code 20060731...
Page 450 Monitoring and Metering Functions 100% 10,000 1000 7 8 9 kA Interrupted per DWG: M300G134 Operation Figure 8.3: Breaker Monitor Accumulates 50% Wear Date Code 20060731 SEL-300G Instruction Manual...
Page 451 Monitoring and Metering Functions 100% 10,000 1000 kA Interrupted per DWG: M300G135 Operation Figure 8.4: Breaker Monitor Accumulates 100% Wear SEL-300G Instruction Manual Date Code 20060731...
Page 452: Station Dc Battery Monitor
ATTERY ONITOR The station dc battery monitor in the SEL-300G can alarm for under- or overvoltage dc battery conditions and give a view of how much the station dc battery voltage dips when tripping, closing, and other dc control functions take place. The monitor measures the station dc battery voltage applied to the rear-panel terminals labeled POWER, Z25, and Z26.
Page 453: Operation Of Station Dc Battery Monitor When Ac Voltage Is Powering The Relay
Operation of Station DC Battery Monitor When AC Voltage is Powering the Relay If the SEL-300G has a 125/250 Vac/Vdc supply, it can be powered by ac voltage (85 to 264 Vac) connected to the rear-panel terminals labeled POWER. When powering the relay with ac voltage, the dc voltage elements in Figure 3.4 see the average of the sampled ac voltage powering the...
Page 454: Energy Metering Updating And Storage
Note: If you are using Modbus RTU Communications Protocol to retrieve energy metering data from the SEL-300G, you are limited to a maximum of 65535 MWh or 65535 MVARh. The energy meter values do not reset automatically, but they can be reset, either locally (front panel or serial port) or from a Modbus master location when they reach the maximum value mentioned above.
Page 455: Maximum/Minimum Metering Updating And Storage
MET M and MET RM are also available via the front-panel METER pushbutton. See Figure 9.2 in Section 9: Front-Panel Operation. Maximum/Minimum Metering Updating and Storage The SEL-300G Relay updates maximum/minimum values, if the following conditions are met: • A generator fault is not detected.
Page 457 Figure 9.1: SEL-300G Relay Front-Panel Pushbuttons—Overview............9-2 Figure 9.2: SEL-300G Relay Front-Panel Pushbuttons—Primary Functions.........9-3 Figure 9.3: SEL-300G Relay Front-Panel Pushbuttons—Primary Functions (continued) .....9-4 Figure 9.4: SEL-300G Relay Front-Panel Pushbuttons—Secondary Functions........9-5 Figure 9.5: Local Control Switch Configured as an ON/OFF Switch ............9-6 Figure 9.6: Local Control Switch Configured as an OFF/MOMENTARY Switch ........9-6...
Page 459: Front-Panel Operation
This section describes how to get information, make settings, and execute control operations from the relay front panel. It also describes the default displays. RONT ANEL ARGET Table 9.1: SEL-300G Relay Front-Panel Target LED Definitions LED Label Definition Number Relay Enabled—see subsection Relay Self-Test Alarms in Section 4: Control Equations.
Page 460: Target Reset/Lamp Test Front-Panel Pushbutton
Section 6: Enter Relay Settings; relay shipped with FP_TO = 15 minutes). TARGET METER EVENTS STATUS OTHER CNTRL GROUP RESET LAMP CANCEL SELECT EXIT TEST (Dual Function Also has Primary Secondary Function DWG: M300G136a Secondary) (see Figure 9.4) Figure 9.1: SEL-300G Relay Front-Panel Pushbuttons—Overview Date Code 20060731 SEL-300G Instruction Manual...
Page 461: Primary Functions
Access Level 1 password through the front panel. DWG: M300G137 Figure 9.2: SEL-300G Relay Front-Panel Pushbuttons—Primary Functions Front-Panel Password Security Refer to the comments at the bottom of Figure 9.3 concerning Access Level B and Access Level 2 passwords.
Page 462: Secondary Functions
Output contacts are pulsed for only 1 second from the front panel. Local control is not available through the serial port and does not require the entry of a password. DWG: M300G138a Figure 9.3: SEL-300G Relay Front-Panel Pushbuttons—Primary Functions (continued) Secondary Functions After a primary function is selected (see Figure 9.2 and Figure 9.3), the pushbuttons revert to...
Page 463 *Front-panel pushbutton functions that correspond to Access Level 1 serial port commands do not require the entry of the Access Level 1 password through the front panel. DWG: M300G139a Figure 9.4: SEL-300G Relay Front-Panel Pushbuttons—Secondary Functions SEL-300G Instruction Manual Date Code 20060731...
Page 464: Local Control Function Description
Figure 9.6: Local Control Switch Configured as an OFF/MOMENTARY Switch position Relay Word OFF position Logical 1 (n=1 through 16) (logical 0) MOMENTARY DWG: M300G145 position Figure 9.7: Local Control Switch Configured as an ON/OFF/MOMENTARY Switch Date Code 20060731 SEL-300G Instruction Manual...
Page 465: View Local Control (With Factory Settings)
Press the right arrow pushbutton, and scroll back to the first set local control switch in the factory default settings: GEN SHUTDOWN Local GEN SHUTDOWN ←→ RETURN Logical 1 (logical 0) Position: RETURN TRIP DWG: M300G080 SEL-300G Instruction Manual Date Code 20060731...
Page 466 See Local Control Switches in Section 4: SEL Control Equations for details on how local OGIC bit outputs LB1 and LB2 are set in SEL control equation settings to respectively trip and OGIC close a circuit breaker. Date Code 20060731 SEL-300G Instruction Manual...
Page 467: Local Control State Retained When Relay De-Energized
OTATING EFAULT ISPLAY The relay name, “SEL-300G”, displays if no local control is operational (i.e., no corresponding switch position label settings were made) and no display point labels or metering quantities are enabled for display.
Page 469 Table 10.4: Serial Communications Port Pin/Terminal Function Definitions........10-5 Table 10.5: Serial Port Automatic Messages ..................10-8 Table 10.6: Serial Port Command Summary ..................10-10 Table 10.7: SEL-300G Relay Word and Its Correspondence to TAR Command .......10-32 Table 10.8: SEL-300G Relay Control Subcommands .................10-37 Table 10.9: SEL-300G Error Messages ....................10-40 FIGURES Figure 10.1: DB-9 Connector Pinout for EIA-232 Serial Ports ..............10-1...
Page 471: Section 10: Serial Port Communications And Commands
Serial Port Communications and Commands 10-1 SECTION 10: SERIAL PORT COMMUNICATIONS AND COMMANDS NTRODUCTION Various serial ports are available in the following SEL-300G Relay models: Table 10.1: SEL-300G Relay Available Serial Ports Rear Panel Front Panel Serial Port 1 Serial Port 2...
Page 472: Irig-B
Serial Port Communications and Commands IRIG-B You can input the demodulated IRIG-B time code into Serial Port 2 on any of the SEL-300G models. This is handled adeptly by connecting Serial Port 2 of the SEL-300G to an SEL communications processor with Cable C273A (see cable diagrams that follow in this section).
Page 473: Sel-300G To Computer
Serial Port Communications and Commands 10-3 SEL-300G to Computer Cable C234A SEL-300G Relay 9-Pin DTE* Device 9-Pin Male 9-Pin Female “D” Subconnector “D” Subconnector Cable C227A SEL-300G Relay 9-Pin DTE* Device 9-Pin Male 25-Pin Female “D” Subconnector “D” Subconnector SEL-300G to Modem...
Page 474: Sel-300G To Sel-Prtu
Serial Port Communications and Commands SEL-300G to SEL-PRTU Cable C231 SEL-PRTU SEL-300G Relay 9-Pin Male 9-Pin Male Round Conxall “D” Subconnector SEL-300G to SEL Communications Processors Cable C273A SEL Communications Processor SEL-300G Relay 9-Pin Male 9-Pin Male Round Conxall “D” Subconnector IRIG+ 4...
Page 475: Communications Protocol
CTS input is asserted. If RTSCTS = H the relay permanently asserts the RTS line (for MOD PROTO) When PROTO = LMD the RTSCTS setting is hidden and hardware handshaking is disabled. SEL-300G Instruction Manual Date Code 20060731...
Page 476: Software Protocols
10-6 Serial Port Communications and Commands Software Protocols The SEL-300G provides standard SEL ASCII, SEL Distributed Port Switch Protocol (LMD), ® SEL Fast Meter , SEL Compressed ASCII, and Modbus RTU protocols. Only one port at a time can be set for the Modbus RTU protocol. The relay activates protocols on a per-port basis.
Page 477 SEL Compressed ASCII protocol provides compressed versions of some of the relay ASCII commands. The protocol is described in Appendix E: Compressed ASCII Commands . Modbus RTU Protocol Modbus RTU protocol provides binary multidrop communication with the SEL-300G. The protocol is described in Appendix F: Modbus RTU Communications Protocol . ERIAL...
Page 478: Serial Port Access Levels
= ACC <Enter> The ACC command takes the relay to Access Level 1 [see ACC, BAC, and 2AC Commands (Go to Access Level 1, B, or 2) in the Command Explanations subsection for more detail]. Date Code 20060731 SEL-300G Instruction Manual...
Page 479 =>> Commands ACC through STA C in Table 10.6 are available from Access Level 2. For example, enter the SET command at the Access Level 2 prompt to make relay settings: =>> SET <Enter> SEL-300G Instruction Manual Date Code 20060731...
Page 480: Command Summary
MET RE => MET RM Reset max/min metering => MET RP Reset peak demand ammeter => MET T Thermal Metering Data => Display generator operation profile => Quit access level => Sequential Events Recorder Date Code 20060731 SEL-300G Instruction Manual...
Page 481 Year/Month/Day) by changing the DATE_F relay setting. Time: This is the time the command response was given (except for relay response to the EVE command, where it is the time the event occurred). SEL-300G Instruction Manual Date Code 20060731...
Page 482: Command Explanations
The relay is shipped with the default Access Level 1 password shown in the table under the PAS command later in this section. At the above prompt enter the default password and press the <Enter> key. Date Code 20060731 SEL-300G Instruction Manual...
Page 483 Compressed ASCII commands. For details on this and other Compressed ASCII commands see Appendix E: Compressed ASCII Commands . Access Level 1 Commands BRE Command (Breaker Monitor Data) Use the BRE command to view the breaker monitor report. SEL-300G Instruction Manual Date Code 20060731...
Page 484 You can separate the month, day, and year parameters with spaces, commas, slashes, colons, and semicolons. EVE Command (Event Reports) Use the EVE command to view event reports. See Section 11: Event Reports and SER Functions for further details on retrieving event reports. Date Code 20060731 SEL-300G Instruction Manual...
Page 485 SEL control OGIC equation event report trigger condition setting ER PULSE: event report generated by execution of the PUL (Pulse) command TRIG: event report generated by execution of the TRI (Trigger) command SEL-300G Instruction Manual Date Code 20060731...
Page 486 The MET k command displays instantaneous magnitudes (and angles if applicable) of the following quantities: Currents Input currents (A primary) A,B,C,N Residual ground current (A primary; I Input Currents (A primary, Models 0300G1 and 0300G3) A87,B87,C87 Date Code 20060731 SEL-300G Instruction Manual...
Page 487 => MET k <Enter> where k is an optional parameter to specify the number of times (1–32767) to repeat the meter display. If k is not specified, the meter report is displayed once. The output from an SEL-300G is shown:...
Page 488 Single-phase megavars (DELTA_Y = Y) A,B,C MVAR Three-phase megavars Reset Time Demand, Peak Last time the demands and peak demands were reset To view demand metering values, enter the command: => MET D <Enter> Date Code 20060731 SEL-300G Instruction Manual...
Page 489 A-, B-, and C-phase (I1F2, I2F2, and I3F2, respectively) in Currents multiples of TAP and percent of their respective operate quantities. To view differential meter quantities, enter the command: => MET DIF <Enter> The output from an SEL-300G is shown below: =>MET DIF <Enter> GENERATOR Date: 03/06/98 Time: 08:21:19.744...
Page 490 Three-phase megavar hours (in and out) Reset Time Last time the energy meter was reset To view energy metering values, enter the command: => MET E <Enter> The output from an SEL-300G is shown: =>MET E <Enter> GENERATOR Date: 01/20/98 Time: 07:59:18.992...
Page 491 The METER T command displays the temperatures of any connected RTDs to the SEL-2600 Module. The command will display the temperature values –0– for all the connected RTDs if either the SEL-2600 RTD Module or its communications to the SEL-300G fails. To view the thermal metering values, enter the command: =>...
Page 492 10-22 Serial Port Communications and Commands The output from an SEL-300G is shown: => METER T <Enter> GENERATOR Date: 11/14/00 Time: 16:08:12.450 TERMINAL Input Temperature Data (deg. F) 1 BRG = 2 BRG = 3 BRG = 4 NONE 5 WDG =...
Page 493 0:00:56:56 => Section 8: Monitoring and Metering Functions provides additional information on the SEL-300G generator operating profile function. QUI Command (Quit Access Level) The QUI command returns the relay to Access Level 0. To return to Access Level 0, enter the command: =>...
Page 494 The SHO commands display only the enabled settings. To display all settings, including disabled/hidden settings, append an A to the SHO command (e.g., SHO 1 A ). Following are sample SHOWSET commands for the SEL-300G model 0300G10, showing all the setting categories. The settings for the other SEL-300G models are similar.
Page 495 SV5PU = 0.00 SV5DO = 0.00 =0SV6PU = 0.00 SV6DO = 0.00 SET1 =LB1 + RB1 RST1 =3PO SET2 =INADT RST2 =TRGTR SET3 =!(DCLO * DCHI) RST3 =TRGTR SET4 RST4 (continued on next page) SEL-300G Instruction Manual Date Code 20060731...
Page 496 OUT107 =24D1T + 46Q1T + BCW + BNDA + BNDT + !(DCLO * DCHI) OUT201 =0 OUT202 =0 OUT203 =0 OUT204 =0 OUT205 =0 OUT206 =0 OUT207 =0 OUT208 =0 OUT209 =0 OUT210 =0 OUT211 =0 OUT212 =0 SCEUSE 56.4 GR1CHK 514A => Date Code 20060731 SEL-300G Instruction Manual...
Page 497 DP7_1 =AB OP TRIP DP7_0 DP8_1 DP8_0 DP9_1 DP9_0 DP10 DP10_1 = DP10_0 = DP11 DP11_1 = DP11_0 = DP12 DP12_1 = DP12_0 = DP13 DP13_1 = DP13_0 = DP14 (continued on next page) SEL-300G Instruction Manual Date Code 20060731...
Page 498 => STA n <Enter> where n is an optional parameter to specify the number of times (1–32767) to repeat the status display. If n is not specified, the status report is displayed once. The output of an SEL-300G is shown:...
Page 499 W (Warning) or F (Failure) is appended to the values to indicate an out-of-tolerance condition. Communication and Field Ground Module (SEL-2664) status values: COMM MODULE Description Receiving valid communications. FAIL Receiving communications from device with a status word indicating a remote failure. SEL-300G Instruction Manual Date Code 20060731...
Page 500 Relay Word Row 5). Valid names are shown in Table 10.7. k is an optional parameter to specify the number of times (1–32767) to repeat the Relay Word row display. If k is not specified, the Relay Word row is displayed once. Date Code 20060731 SEL-300G Instruction Manual...
Page 501 TAR R command is executed, or the TARGET RESET pushbutton is pushed. Clears front-panel tripping target LEDs. Unlatches the trip logic for testing TAR R purposes (see Figure 4.6). Shows Relay Word Row 0. SEL-300G Instruction Manual Date Code 20060731...
Page 502 10-32 Serial Port Communications and Commands Table 10.7: SEL-300G Relay Word and Its Correspondence to TAR Command TAR 0 LOP 60 TRIP 21/51V (Front-Panel CLOSED LEDs) TAR 1 27/59 (Front-Panel LEDs) 24TC 24D1 24D1T 24C2 24C2T 24CR TAR 2 TAR 3...
Page 503 100 percent stator ground protection elements are enabled (64GTC = logical 1) and 60LOP is deasserted (60LOP = logical 0). Command TAR 12 will report the same data since the 60LOP bit is in Row 12 of the Relay Word. SEL-300G Instruction Manual Date Code 20060731...
Page 504: Access Level B Commands
The CLO command is supervised by the main board Breaker jumper (see Table 5.6). If the Breaker jumper is not in place (Breaker jumper = OFF), the relay does not execute the CLO command and responds: Aborted: No Breaker Jumper Date Code 20060731 SEL-300G Instruction Manual...
Page 505 The OPE n command is supervised by the main board Breaker jumper (see Table 5.6). If the Breaker jumper is not in place (Breaker jumper = OFF), the relay does not execute the OPE command and responds: Aborted: No Breaker Jumper SEL-300G Instruction Manual Date Code 20060731...
Page 506 Date: 01/17/98 Time: 10:04:11.330 TERMINAL Int Trips= 0.0 IB= 0.0 IC= 0.0 kA Ext Trips= 0.0 IB= 0.0 IC= 0.0 kA Percent wear: A= 10 B= 12 C= 10 LAST RESET 01/17/98 09:45:35 ==> Date Code 20060731 SEL-300G Instruction Manual...
Page 507 CONTROL RB5: PRB 5 <Enter> =>> You must enter the same remote bit number in both steps in the command. If the bit numbers do not match, the relay responds “Invalid Command.” Table 10.8: SEL-300G Relay Control Subcommands Subcommand Description SRB n Set Remote Bit n (“ON”...
Page 508 To change the password for Access Level 1 to Ot3579, enter the following: =>>PAS 1 Ot3579 <Enter> =>> Similarly, PAS B and PAS 2 can be used to change the Level B and Level 2 passwords, respectively. Date Code 20060731 SEL-300G Instruction Manual...
Page 509 SYN R (Models 0300G2, 0300G3) The SYN R command allows the operator to reset the synchronization function breaker’s average close time and close counter. Use the SYN R command from Access Level 2. SEL-300G Instruction Manual Date Code 20060731...
Page 510 The relay will generate error messages in response to serial port commands or arguments that it does not recognize. The following table lists the error messages and their causes and suggests corrections. Table 10.9: SEL-300G Error Messages Command This Message Occurs...
Page 511 Synch-check option Relay is not equipped with not ordered in this synch-check elements and so relay does not create this type of event report. SEL-300G Instruction Manual Date Code 20060731...
Page 513 SEL-300G Relay Command Summary Access The only significant thing that can be done at Access level 0 is to go to Access Level 1 or Level 0 use the HELP command. The screen prompt is: = Commands Enter Access Level 1. If the main board password jumper is not in place, the relay prompts for the entry of the Access Level 1 password in order to enter Access Level 1.
Page 514 SEL-300G Relay Command Summary Access The Access Level 1 commands primarily allow the user to look at information Level 1 (e.g., settings, metering), not change it. The screen prompt is: => Commands (continued) HIS n Show a brief summary of the n latest event reports.
Page 515 SEL-300G Relay Command Summary Access Access Level B commands primarily allow the user to operate relay parameters and output Level B contacts. You can execute all Access Level 1 commands from Access Level B. The Commands screen prompt is: = =>...
Page 517 TABLE OF CONTENTS SECTION 11: EVENT REPORTS AND SER FUNCTIONS ....11-1 Introduction..........................11-1 Standard Event Reports ......................11-1 Event Report Length (Settings LER and PRE)..............11-1 Standard Event Report Triggering ..................11-2 Standard Event Report Summary..................11-3 Retrieving Full-Length Standard Event Reports..............11-4 Compressed ASCII Event Reports..................11-6 Filtered and Unfiltered Event Reports ................11-6 Clearing Standard Event Report Buffer................11-6 Standard Event Report Column Definitions ...............11-6...
Page 519: Section 11: Event Reports And Ser Functions
See Figure 11.2 for an example event report (Note: Figure 11.2 is on multiple pages). Event Report Length (Settings LER and PRE) The SEL-300G provides user-programmable event report length and prefault length. Event report length is 15, 30, 60, or 180 cycles. Prefault length ranges from 1 to LER-1 cycles.
Page 520: Standard Event Report Triggering
When setting ER sees a logical 0 to logical 1 transition, it generates an event report (if the SEL-300G is not already generating a report that encompasses the new transition). The factory setting is:...
Page 521: Standard Event Report Summary
The “Event:” field shows the event type. The possible event types and their descriptions are shown in the table below. Note the correspondence to the preceding event report triggering conditions (see Standard Event Report Triggering in this section). SEL-300G Instruction Manual Date Code 20060731...
Page 522: Retrieving Full-Length Standard Event Reports
60, or (1–2) if LER = 180. Defaults to 1 if not listed, where 1 is the most recent event. Display differential element event report. Display x samples per cycle (4 or 16); defaults to 4 if not listed. Date Code 20060731 SEL-300G Instruction Manual...
Page 523 Display 10 cycles of the protection and control elements section of the second event report at 1/4-cycle resolution. EVE 2 A R S4 Display the unfiltered analog section of the second event report at 1/4-cycle resolution. SEL-300G Instruction Manual Date Code 20060731...
Page 524: Compressed Ascii Event Reports
“Invalid Event” Compressed ASCII Event Reports The SEL-300G provides Compressed ASCII event reports to facilitate event report storage and display. It also includes additional information (e.g., status of all Relay Word Bits) not available in the reports retrieved using the EVE command. The SEL-2032/SEL-2030/SEL-2020 Communications Processors and the SEL-5601 Analytic Assistant software take advantage of the Compressed ASCII format.
Page 525 OGIC Equations for more information on Relay Word bits shown in Table 11.3. Note: The event report does not show the output contacts or optoisolated inputs for the extra I/O board on model 0300G_1. SEL-300G Instruction Manual Date Code 20060731...
Page 526 21C1T asserted. 21Z2 21P2P, 21P2T 21P2P element picked up. 21P2P element picked up; timer expired; timer output 21P2T asserted. 21C2P, 21C2T 21C2P element picked up. 21C2P element picked up; timer expired; timer output 21C2T asserted. Date Code 20060731 SEL-300G Instruction Manual...
Page 527 Both Level 1 and Level 2 phase undervoltage elements picked up. 27V1 positive-sequence undervoltage element picked up. 27V1 and 27P1 picked up. 27V1 and 27P2 picked up. 27P1, 27P2, and 27V1 picked up. SEL-300G Instruction Manual Date Code 20060731...
Page 528 Both Level 1 and Level 2 elements picked up. 50G1, 50G2 Level 1 instantaneous residual overcurrent element picked up. Level 2 instantaneous residual overcurrent element picked up. Both Level 1 and Level 2 elements picked up. Date Code 20060731 SEL-300G Instruction Manual...
Page 529 Both Level 1 and Level 2 elements picked up. 50R1, 50R2 Level 1 instantaneous 87-input residential overcurrent element picked Level 2 instantaneous 87-input residual overcurrent element picked up. Both Level 1 and Level 2 elements picked up. SEL-300G Instruction Manual Date Code 20060731...
Page 530 Both synch-check voltage window elements picked up. 59PP 59PP1, 59PP2 Level 1 phase-to-phase instantaneous overvoltage element picked up. Level 2 phase-to-phase instantaneous overvoltage element picked up. Both phase-to-phase instantaneous overvoltage elements picked up. Date Code 20060731 SEL-300G Instruction Manual...
Page 531 Level 1 instantaneous ground differential element picked up and time delay expired. 87N2 87N2P, 87N2T Level 2 instantaneous ground differential element picked up. Level 2 instantaneous ground differential element picked up and time delay expired. SEL-300G Instruction Manual Date Code 20060731...
Page 532 Both RB5 and RB6 asserted. REM78 RB7, RB8 Remote bit RB7 asserted. Remote bit RB8 asserted. Both RB7 and RB8 asserted. LCH12 LT1, LT2 Latch bit LT1 asserted. Latch bit LT2 asserted. Both LT1 and LT2 asserted. Date Code 20060731 SEL-300G Instruction Manual...
Page 533 BND4T, BND5T, BND6T Accumulator band trip bit asserted. Any two or more 81AC Off-Frequency Accumulator band trip bits asserted. OC1, OC2, OC3, CC Open Command bit OC1, OC2, or OC3 asserted. Close Command bit CC asserted. SEL-300G Instruction Manual Date Code 20060731...
Page 534: Differential Event Report Column Definitions (Models 0300G1 And 0300G3)
Table 11.5 summarizes the event report differential element, output, and input columns. See Table 4.6 and Table 4.8 in Section 4: SEL Control Equations for more information on OGIC Relay Word bits shown in Table 11.5. Date Code 20060731 SEL-300G Instruction Manual...
Page 535 These current magnitudes are scaled in multiples of TAP. Because these quantities are magnitudes, no phase angle information can be inferred or calculated, as with the other event report analog data. SEL-300G Instruction Manual Date Code 20060731...
Page 536: Sequential Events Recorder (Ser) Report
The relay saves the latest 512 rows of the SER in nonvolatile memory. Row 1 is the most recently triggered row and Row 512 is the oldest. View the SER report by date or SER row number as outlined in the examples below. Date Code 20060731 SEL-300G Instruction Manual...
Page 537 The date entries in the above example SER commands are dependent on the Date Format setting DATE_F. If setting DATE_F = MDY, then the dates are entered as in the above examples (Month/Day/Year). If setting DATE_F = YMD, then the dates are entered Year/Month/Day. SEL-300G Instruction Manual Date Code 20060731...
Page 538 EPORT ODELS SEL-300G Relays equipped with synchronism checking generate a report each time the relay initiates a synch-check supervised generator breaker close. The report contains information about the system and generator at the time the close was performed. The relay stores the three latest reports in nonvolatile relay memory.
Page 539: Conditions When Close Asserted
You can use the breaker close time average to refine the TCLOSD setting. By setting TCLOSD closer to the actual breaker closing time, the synch-check function performs better to cause a breaker close exactly when the generator voltage phase angle difference equals CANGLE. SEL-300G Instruction Manual Date Code 20060731...
Page 540: Reset The Breaker Close Time Average
If the “trigger” row (>) and the maximum phase current row (*) are the same row, the * symbol takes precedence. Date Code 20060731 SEL-300G Instruction Manual...
Page 541 ...r ..r ..rrr ....V ..3....r ..r ..rrr ....v ..3....r ..r ..rrr ....v ..3....r ..r ..rrr ....v ..3....(continued on next page) SEL-300G Instruction Manual Date Code 20060731...
Page 542 =!3PO 24D1P = 105 24D1D = 1.00 24CCS = ID 24IP = 105 24IC = 2.0 24ITD = 0.1 24D2P2 = 176 24D2D2 = 3.00 24CR = 240.00 24TC =!60LOP (continued on next page) Date Code 20060731 SEL-300G Instruction Manual...
Page 543 =51NT + 50N1T + 51CT + 51VT + 64G1T + 64G2T + INADT + LT1 * 32P2T SV3PU = 0.00 SV3DO = 0.00 =24C2T + 32P1T + 40Z1T + 40Z2T SV4PU = 0.00 SV4DO = 0.00 (continued on next page) SEL-300G Instruction Manual Date Code 20060731...
Page 544 OUT210 =0 OUT211 =0 OUT212 =0 Global Settings: = 15 FP_TO = 15 DATE_F = MDY DCLOP = OFF DCHIP = OFF FNOM = 60 PHROT = ABC DELTA_Y = Y (continued on next page) Date Code 20060731 SEL-300G Instruction Manual...
Page 545 DP12_1 = DP12_0 = DP13 DP13_1 = DP13_0 = DP14 DP14_1 = DP14_0 = DP15 DP15_1 = DP15_0 = DP16 DP16_1 = DP16_0 = => => Figure 11.2: Example Standard 15-Cycle Event Report 1/4-Cycle Resolution SEL-300G Instruction Manual Date Code 20060731...
Page 546 Figure 11.2. Figure 11.4 shows how the event report ac current column data relates to the actual sampled waveform and rms values. Figure 11.5 shows how the event report current column data can be converted to phasor rms values. Voltages are processed similarly. Date Code 20060731 SEL-300G Instruction Manual...
Page 547 Figure 11.4: Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform In Figure 11.4, note that any two rows of current data from the event report in Figure 11.2, 1/4 cycle apart, can be used to calculate rms current values. SEL-300G Instruction Manual Date Code 20060731...
Page 548 X = 1160 Real Axis Angle = Arctan -906 = Arctan 1160 = -38.0 (-906) +(1160) Magnitude = = 1472 DWG: M300G154 Figure 11.5: Derivation of Phasor RMS Current Values From Event Report Current Values Date Code 20060731 SEL-300G Instruction Manual...
Page 549 # column. The circled, numbered comments in Figure 11.2 also correspond to the # column numbers in Figure 11.6. The SER event report in Figure 11.6 contains records of events that occurred after the standard event report in Figure 11.2. SEL-300G Instruction Manual Date Code 20060731...
Page 550: Differential Event Report Headers
Like standard format event reports, in differential event reports the arrow (>) in the column following the IC87 column identifies the “trigger” row. This is the row that corresponds to the Date and Time values at the top of the event report. Date Code 20060731 SEL-300G Instruction Manual...
Page 551 0.95 0.94 0.00 0.00 0.00 ..Event: TRIG Frequency: 60.00 Targets: Currents (A Pri), ABCNGQ: 1885 1888 1884 Group 1 Settings: =GENERATOR =TERMINAL Figure 11.7: Example Differential Event Report 1/4-Cycle Resolution SEL-300G Instruction Manual Date Code 20060731...
Page 553 TABLE OF CONTENTS SECTION 12: MAINTAIN AND TROUBLESHOOT RELAY....12-1 Relay Maintenance Testing ......................12-1 Relay Misoperation........................12-2 Relay Troubleshooting........................12-3 Inspection Procedure......................12-3 Troubleshooting Procedure....................12-3 Relay Calibration ........................12-4 SEL-300G Instruction Manual Date Code 20060731...
Page 555: Section 12: Maintain And Troubleshoot Relay
3. Use a continuity tester to verify that the relay contact closes when commanded. 4. Return the relay contacts to service in their individual circuits. Perform any additional desired tests to verify the circuit performance. SEL-300G Instruction Manual Date Code 20060731...
Page 556: Relay Misoperation
It is usually helpful to select an 8 or 9 point Courier font to view or print the event data, as this helps line up the data rows vertically on a page. Date Code 20060731 SEL-300G Instruction Manual...
Page 557: Relay Troubleshooting
2. Relay or communications device at incorrect baud rate or other communication parameter incompatibility, including cabling error. 3. Relay serial port has received an XOFF, halting communications. Type <Ctrl>Q to send the relay an XON and restart communications. SEL-300G Instruction Manual Date Code 20060731...
Page 558: Relay Calibration
4. Analog input cable between transformer secondary and main board loose or defective. 5. Failed relay self-test. ELAY ALIBRATION The SEL-300G Relay is factory-calibrated. If you suspect that the relay is out of calibration, please contact the factory. ACTORY SSISTANCE We appreciate your interest in SEL products and services.
Page 559 Figure 13.6: Restrained Differential Element Logic When E87 = T and IHBL = N ......13-7 Figure 13.7: Restrained Differential Element Logic When E87 = T and IHBL = Y ......13-7 Figure 13.8: Differential Element Operating Characteristics..............13-17 SEL-300G Instruction Manual Date Code 20060731...
Page 561: Section 13: Differential Element Settings
Figures 5.16 or 5.17. Do not attempt to use this element with high-impedance grounded generators, as the primary residual current they supply during a ground fault is too low for secure, dependable protection. SEL-300G Instruction Manual Date Code 20060731...
Page 562 Time-delayed Level 1 Ground Differential Indication, Testing, Tripping Element Pickup 87N2P Instantaneous Level 2 Ground Differential Indication, Testing, SER, Element Pickup Event Triggering 87N2T Time-delayed Level 2 Ground Differential Indication, Testing, Tripping Element Pickup Date Code 20060731 SEL-300G Instruction Manual...
Page 563: Setting Calculation
Setting 87NTC Relay Word Relay Bits AC Inputs 87N1P 87N1D Id = IG⋅ CTR/CTRN I87N = |Id - In| 87N1T 87N2P Settings 87N1P 87N2D 87N2T 87N2P DWG: M300G227 Figure 13.1: 87N Element Logic Diagram SEL-300G Instruction Manual Date Code 20060731...
Page 564 (I1F2, I2F2, and I3F2). Fundamental Frequency Digital Cosine Filter IA87 IA871 IB87 IB871 IC87 IC871 Second-Harmonic Digital Cosine Filter IA872 IB872 IC872 DWG: M300G198 Figure 13.2: Fundamental and Second-Harmonic Filters Provide Current Inputs to Differential Elements Date Code 20060731 SEL-300G Instruction Manual...
Page 565 Front-Panel Operation, Section 10: Serial Port Communications and Commands, and Section 11: Event Reports and SER Functions. Figure 13.4 illustrates the differential element logic. Figure 13.5, Figure 13.6, and Figure 13.7 describe the restrained differential element blocking logic for various relay settings. SEL-300G Instruction Manual Date Code 20060731...
Page 566 (87BL2, 87BL3 similar) PCT2 Setting PCT2 ≠OFF DWG: M300G167b Figure 13.4: Differential Element Logic Diagram Relay Word Relay Bits Word 87R1 87R2 87R3 Setting DWG: M300G168 Figure 13.5: Restrained Differential Element Logic When E87 = G Date Code 20060731 SEL-300G Instruction Manual...
Page 567 Figure 13.6: Restrained Differential Element Logic When E87 = T and IHBL = N Relay Word Bits 87R1 87BL1 Relay Word 87R2 87BL2 87R3 87BL3 DWG: M300G170 Setting Figure 13.7: Restrained Differential Element Logic When E87 = T and IHBL = Y SEL-300G Instruction Manual Date Code 20060731...
Page 568: Settings For Generator Protection
ENERATOR ROTECTION Setting Description For generator current differential applications similar to those shown in Figure 5.13, the SEL-300G Relay offers simple generator differential protection, whose settings are described below: Enable Differential Protection (G, T, N) E87 = G Set E87 = G to enable differential protection elements in most generator differential applications.
Page 569: Setting Calculation
It should be set high enough to not respond to false difference current caused by differences in CT performance for heavy through-faults. Setting U87P = 10 generally provides satisfactory performance. SEL-300G Instruction Manual Date Code 20060731...
Page 570 The relay uses the TAP1 and TAPD values in the Connection and TAP Compensation function shown in Figure 13.3. When E87 = G, only TAP compensation is performed. I1W1F1 equals IA1 divided by TAP1. I187F1 equals IA87 divided by TAPD. Date Code 20060731 SEL-300G Instruction Manual...
Page 571: Settings For Unit Protection
ETTINGS ROTECTION Setting Description For unit current differential applications similar to those shown in Figure 5.15, the SEL-300G offers differential protection that can compensate correctly for the ratio and phase shift of the generator step-up transformer. Enable Differential Protection (G, T, N)
Page 572: Setting Calculation
Transformer High-Side Line-to-Line Voltage, VWDGD The VWDGD setting is used to derive the TAPD value. When a generator step-up transformer is included in the differential zone, set VWDGD equal to the transformer rated high-side voltage in Date Code 20060731 SEL-300G Instruction Manual...
Page 573 2. Use an auxiliary current transformer in secondary circuits of the 87 input current transformers to modify the current transformer ratio apparent to the SEL-300G. 3. Set VWDGD = OFF then manually set TAP1 and TAPD to values that are close—but not equal—to the ideal derived values.
Page 574 Note that the relay requires the following inequality be true: ≥ 0.04 • In O87P • TAP where: In = 1 A or 5 A rating of the relay phase current inputs is the smaller of TAP1 or TAPD Date Code 20060731 SEL-300G Instruction Manual...
Page 575 The 87U and 87R differential elements detect faults and usually are used to trip the main generator breaker, the field breaker, the prime, and the generator lockout relay. Refer to Section 4: SEL Control Equations for more detail and examples of tripping SEL OGIC OGIC control equations. SEL-300G Instruction Manual Date Code 20060731...
Page 576 IA871 IB871 I1W1F1 I187F1 • 3 TAP1 • 3 TAPD − − IB871 IC871 I2W1F1 I287F1 • 3 TAPD • 3 TAP1 − − IC871 IA871 I3W1F1 I387F1 • 3 TAP1 • 3 TAPD Date Code 20060731 SEL-300G Instruction Manual...
Page 577: Restrained Differential Element Operating Characteristics
TAP and connection compensation for the second-harmonic currents is similar. ESTRAINED IFFERENTIAL LEMENT PERATING HARACTERISTICS (Multiples of TAP) 87U Operate Region U87P SLP2 Operate Region Restraint Region SLP1 O87P IRS1 (Multiples of TAP) DWG: M300G171 Figure 13.8: Differential Element Operating Characteristics SEL-300G Instruction Manual Date Code 20060731...
Page 579 ASCII Configuration Message List..................D-1 Message Definitions ........................D-2 A5C0 Relay Definition Block....................D-2 A5C1 Fast Meter Configuration Block ................D-2 A5D1 Fast Meter Data Block .................... D-11 A5C2/A5C3 Demand/Peak Demand Fast Meter Configuration Messages....... D-12 SEL-300G Instruction Manual Date Code 20060731...
Page 580 DNA Message ........................D-18 BNA Message ........................D-20 APPENDIX E: COMPRESSED ASCII COMMANDS ......E-1 Introduction..........................E-1 CASCII Command—General Format..................E-1 CASCII Command—SEL-300G....................E-2 CSTATUS Command—SEL-300G..................... E-7 CHISTORY Command—SEL-300G................... E-9 CEVENT Command—SEL-300G....................E-9 APPENDIX F: MODBUS RTU COMMUNICATIONS PROTOCOL ..F-1 Introduction...........................F-1...
Page 581: Tables
Table F.9: 04h Read Holding Register Command .................F-9 Table F.10: 05h Force Single Coil Command ..................F-10 Table F.11: SEL-300G Relay Command Coils (FC05h) ...............F-11 Table F.12: 06h Preset Single Register Command ................F-12 Table F.13: 07h Read Exception Status Command ................F-13 Table F.14: 08h Loopback Diagnostic Command .................F-14...
Page 582 Figure H.7: Delta-Delta Power Transformer With Wye High-Side Connections ........H-4 Figure H.8: Wye-Delta Power Transformer With Wye High-Side Connections........H-4 Figure H.9: Wye-Delta Power Transformer With Wye High-Side Connections........H-5 Figure H.10: Wye-Wye Power Transformer With Wye High-Side CT Connections....... H-5 Date Code 20060731 SEL-300G Instruction Manual...
Page 583: Appendix A: Firmware And Manual Versions
The firmware revision number is after the “R” and the release date is after the “D”. The string of xs after “SEL-300G” is the firmware part number and depends on the features ordered with the relay (refer to the SEL-300G Model Option Tables. Model Option Tables can be obtained from the factory or from our website www.selinc.com).
Page 584 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R324-Z301301-D20060731 Model SEL-0300G30 Fifteenth Revision. 20060731 Model SEL-0300G31 Fifteenth Revision. Model SEL-0300G20 Fifteenth Revision. Model SEL-0300G21 Fifteenth Revision. Model SEL-0300G10 Fifteenth Revision.
Page 585 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R322-Z300300-D20041019 Model SEL-0300G30 Thirteenth Revision. 20041019 Model SEL-0300G31 Thirteenth Revision. Model SEL-0300G20 Thirteenth Revision. Model SEL-0300G21 Thirteenth Revision. Model SEL-0300G10 Thirteenth Revision.
Page 586 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R241-Z200200-D20040903 Model SEL-0300G30 Eleventh Revision. 20040903 Model SEL-0300G31 Eleventh Revision. Model SEL-0300G20 Eleventh Revision. Model SEL-0300G21 Eleventh Revision. Model SEL-0300G10 Eleventh Revision.
Page 587: Elements
Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R320-Z300300-D20040607 Model SEL-0300G30 Eleventh Revision. 20040607 Model SEL-0300G31 Eleventh Revision. Model SEL-0300G20 Eleventh Revision. Model SEL-0300G21 Eleventh Revision. Model SEL-0300G10 Eleventh Revision.
Page 588 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R240-Z200200-D20040607 Model SEL-0300G30 Tenth Revision. 20040607 Model SEL-0300G31 Tenth Revision. Model SEL-0300G20 Tenth Revision. Model SEL-0300G21 Tenth Revision. Model SEL-0300G10 Tenth Revision.
Page 589 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R300-Z005004-D20020206 Model SEL-0300G30 Tenth Revision. 20020206 Model SEL-0300G31 Tenth Revision. Model SEL-0300G20 Tenth Revision. Model SEL-0300G21 Tenth Revision. Model SEL-0300G10 Tenth Revision.
Page 590 Firmware and Manual Versions Firmware Manual Part/Revision No. Description of Firmware Date Code SEL-300G-R207-Z004003-D20010615 Manual update only. See Table A.2 for a summary of 20010824 updates. This firmware differs from the previous versions as follows: SEL-300G-R207-Z004003-D20010615 Model SEL-0300G30 Eighth Revision. 20010615 Model SEL-0300G31 Eighth Revision.
Page 591 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R206-Z003003-D20001212 Model SEL-0300G30 Seventh Revision. 20001212 Model SEL-0300G31 Seventh Revision. Model SEL-0300G20 Seventh Revision. Model SEL-0300G21 Seventh Revision. Model SEL-0300G10 Seventh Revision.
Page 592 Firmware Manual Part/Revision No. Description of Firmware Date Code This firmware differs from the previous versions as follows: SEL-300G-R205-Z002002-D20000616 Model SEL-0300G30 Sixth Revision. 20000616 Model SEL-0300G31 Sixth Revision. Model SEL-0300G20 Sixth Revision. Model SEL-0300G21 Sixth Revision. Model SEL-0300G10 Sixth Revision.
Page 593 Model SEL-0300G01 Third Revision. —Corrected scaling error in directional power elements—1 A Models only. —Corrected positive-sequence impedance calculation for phase distance load encroachment function. —Corrected front-panel serial port setting baud rate range typographical error. SEL-300G Instruction Manual Date Code 20060731...
Page 594 Model SEL-0300G11 Original Firmware Release. Model SEL-0300G00 First Revision. Model SEL-0300G01 First Revision. —Added differential elements, differential input overcurrent elements, and associated metering and event reporting functions. —Moved VNOM, INOM settings from Global to Group settings. Date Code 20060731 SEL-300G Instruction Manual...
Page 595: Instruction Manual
Section 2—Improved 64G 100% Stator Ground Protection element recommendations. Setting Sheets—Updated port 1 RTSCTS setting information. Section 7—Updated 51V Commissioning Tests. Section 10—Miscellaneous edits. Section 11—Updated PUL and TRI command information on OUT201–OUT212. Appendix A—Updated firmware versions; updated instruction manual versions table. SEL-300G Instruction Manual Date Code 20060731...
Page 596 Appendix E—Added new commands; updated others. Appendix F—Updated Modbus tables. Appendix G—Created new SEL-5030 Software appendix. ERATOR Appendix H—Added former Appendix B: Differential Connection Diagrams. This manual differs from the previous versions as follows: 20030225 Section 7—Corrected Figure 7.27. Date Code 20060731 SEL-300G Instruction Manual...
Page 597 Section 4—Revised Table 4.6 and Table 4.7. Section 5—Revised EIA-232 Serial Port Voltage Jumpers and Clock Battery. Section 6—Revised table 6.3; inserted RTD based protection in Settings Sheet. Section 10—Added MET T command. Appendix A—Updated firmware versions. SEL-300G Instruction Manual Date Code 20060731...
Page 598 Appendix A—Updated firmware versions. This manual differs from the previous versions as follows: 19990312 Section 2—Corrected phase distance element reach setting instructions on Page 2-14. Section 7—Corrected phase distance element testing instructions on Page 7-23. Date Code 20060731 SEL-300G Instruction Manual...
Page 599 Add error message tables; add relay model tables to Section 1. Modify page format. This manual differs from the previous versions as follows: 19980429 Modify Appendix A. This manual differs from the previous versions as follows: 19980417 Correct typographical errors; Clarify relay setting precision. SEL-300G Instruction Manual Date Code 20060731...
Page 600 Worksheet to Section 7: Relay Commissioning; Moved VNOM and INOM settings from Global to Group setting; Added MET DIF and EVE DIF command descriptions; Clarified the calculation of the 64G2P setting. 19980130 Initial Release. Date Code 20060731 SEL-300G Instruction Manual...
Page 601: Appendix B: Firmware Upgrade Instructions
® use HyperTerminal from a Microsoft Windows operating system) • Serial communications cable (SEL Cable C234A or equivalent) • Disk containing the firmware upgrade (.s19 or .exe) file • Firmware Upgrade Instructions (these instructions) SEL-300G Instruction Manual Date Code 20060731...
Page 602 To establish communication between the relay and a personal computer, you must be able to modify the computer serial communications parameters (i.e., data transmission rate, data bits, parity) and set the file transfer protocol to 1K Xmodem or Xmodem protocol. Date Code 20060731 SEL-300G Instruction Manual...
Page 603 Select the computer serial port you are using to communicate with the relay (Figure B.2) and click OK. This port matches the port connection that you made in Step 1 under B. Establish a Terminal Connection. Figure B.2: Determining the Computer Serial Port SEL-300G Instruction Manual Date Code 20060731...
Page 604 Set terminal emulation to VT100: a. From the File menu, choose Properties. b. Select the Settings tab in the Firmware Upgrade Properties dialog box (Figure B.4). c. Select VT100 from the Emulation list box and click OK. Date Code 20060731 SEL-300G Instruction Manual...
Page 605 Perform the following steps to reattempt a connection: Step 9. From the Call menu, choose Disconnect to terminate communication. Step 10. Correct the port setting: a. From the File menu, choose Properties. SEL-300G Instruction Manual Date Code 20060731...
Page 606 Step 9 under A. Preparing the Relay and click OK twice to return to the terminal emulation window. Figure B.7: Correcting the Communications Parameters Step 12. Press <Enter>. In the terminal emulation window, you should see the Access Level 0 = prompt, similar to that in Figure B.5. Date Code 20060731 SEL-300G Instruction Manual...
Page 607 5, SHO 6, SHO L 6, SHO P 1, SHO P 2, SHO P 3, SHO P F, SHO R, and SHO T. Note: Settings classes can vary among SEL relays. See the relay instruction manual for a listing. SEL-300G Instruction Manual Date Code 20060731...
Page 608 (This feature can cause problems when uploading firmware to the relay.) Step 2. From the computer, start the SEL program. BOOT a. From the Access Level 2 =>> prompt, type the following: L_D <Enter> Date Code 20060731 SEL-300G Instruction Manual...
Page 609 ; Print this list FLASH Type : 040 Checksum = 370E OK Figure B.9: List of Commands Available in SEL BOOT Establish a High-Speed Connection Step 5. Type BAU 38400 <Enter> at the SEL !> prompt. BOOT SEL-300G Instruction Manual Date Code 20060731...
Page 610 From the Transfer menu in HyperTerminal, select Receive File. You should see a dialog box similar to Figure B.11. Step 3. Enter the pathname of a folder on the computer hard drive where you want to record the existing relay firmware. Date Code 20060731 SEL-300G Instruction Manual...
Page 611 Step 6 during the earlier download attempt; this saves you from reentering these on a subsequent attempt. For a successful download, you should see a dialog box similar to Figure B.13. After the transfer, the relay responds with the following: Download completed successfully! SEL-300G Instruction Manual Date Code 20060731...
Page 612 <Enter>). The relay responds with the following: Erasing Erase successful Press any key to begin transfer, then start transfer at the PC <Enter> Step 4. Press <Enter> to start the file transfer routine. Date Code 20060731 SEL-300G Instruction Manual...
Page 613 SEL . You will see no display on your PC to indicate a successful BOOT restart. Figure B.14: Selecting New Firmware to Send to the Relay Figure B.15: Transferring New Firmware to the Relay SEL-300G Instruction Manual Date Code 20060731...
Page 614 Press <Enter> to check for the Access Level 0 = prompt indicating that serial communication is successful. If you get no response, proceed to Match Computer Communications Speed to the Relay on page B-9. Date Code 20060731 SEL-300G Instruction Manual...
Page 615 Calibration, Status, Breaker Wear, and Metering on page B-17. IO_BRD Fail Status Message Note: Perform this procedure if you have only an IO_BRD Fail Status message; for additional fail messages, proceed to CR_RAM, EEPROM, and IO_BRD Fail Status Messages. SEL-300G Instruction Manual Date Code 20060731...
Page 616 PAS command description in the relay instruction manual. Step 3. Type R_S <Enter> to restore factory default settings in the relay (type R_S 1 <Enter> for a 1 A SEL-387 or 1 A SEL-352 Relay). Date Code 20060731 SEL-300G Instruction Manual...
Page 617 If the settings do not match, reenter the settings you saved earlier (see Step 9 under CR_RAM, EEPROM, and IO_BRD Fail Status Messages on page B-16). Step 4. Type SHO C <Enter> to verify the relay calibration settings. SEL-300G Instruction Manual Date Code 20060731...
Page 618 Circuit Breaker n (n = 1, 2, 3, or 4) you recorded in C. Save Settings and Other Data on page B-7. Step 8. Apply current and voltage signals to the relay. Date Code 20060731 SEL-300G Instruction Manual...
Page 619: Return The Relay To Service
If an invalid CID file is transferred, the relay will no longer have a valid IEC 61850 configuration, and the protocol will stop operating. To restart protocol operation, a valid CID must be transferred to the relay. SEL-300G Instruction Manual Date Code 20060731...
Page 620: Required Equipment
In the Address bar, enter the user name (default for FTPUSER setting is 2AC, 2AC password, and the FTP IP address of the relay (Figure B.17) at the same time (ftp://user:password@host:port/path), and press <Enter>. Date Code 20060731 SEL-300G Instruction Manual...
Page 621 Ensure there is no trailing forward slash (/). Step 4. Enter the user name and the 2AC password when the window shown in Figure B.18 appears. Step 5. Click the Log On button. SEL-300G Instruction Manual Date Code 20060731...
Page 622 Step 6. Right-click on the file that you would like to copy. Step 7. Click Copy to Folder (Figure B.19) Step 8. Browse for folder. Step 9. Click OK. Figure B.19: Read (Open) File Date Code 20060731 SEL-300G Instruction Manual...
Page 623 D. Establish a Telnet Connection To establish a Telnet-to-card connection, perform the following steps. Step 1. Click Start > Run. Step 2. Type cmd in the dialog box, and press <Enter> to launch a DOS command window. SEL-300G Instruction Manual Date Code 20060731...
Page 624 Verify that the STA report does not include any warnings or failures. Step 3. Verify that the STA report includes “Device Enabled” at the end of the report. Step 4. Verify that the STA report FID matches the FID of the firmware you transferred. Date Code 20060731 SEL-300G Instruction Manual...
Page 625: Appendix C: Sel Distributed Port Switch Protocol
Enter the sequence CTRL-X QUIT <CR> before entering the prefix character if all relays in the multidrop network do not have the same prefix setting. Note: You can use the front-panel SET pushbutton to change the port settings to return to SEL protocol. SEL-300G Instruction Manual Date Code 20060731...
Page 627: Appendix D: Configuration, Fast Meter, And Fast
ASCII Configuration Message List Request to Relay (ASCII) Response From Relay ASCII Firmware ID String and Terminal ID Setting (TID) ASCII Names of Relay Word bits ASCII Names of bits in the A5B9 Status Byte SEL-300G Instruction Manual Date Code 20060731...
Page 628: Message Definitions
One status flag byte Scale factors in Fast Meter message No scale factors # of analog input channels # of samples per channel # of digital banks # of calculation blocks 0004 Analog channel offset Date Code 20060731 SEL-300G Instruction Manual...
Page 629 Analog channel name (VBC) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 564341000000 Analog channel name (VCA) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message SEL-300G Instruction Manual Date Code 20060731...
Page 630 In response to the A5C1 request, SEL-300G1 Relays send the following block: Data Description A5C1 Fast Meter command Length One status flag byte Scale factors in Fast Meter message No scale factors # of analog input channels # of samples per channel Date Code 20060731 SEL-300G Instruction Manual...
Page 631 Scale factor offset in Fast Meter message 564243000000 Analog channel name (VBC) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 564341000000 Analog channel name (VCA) Analog channel type SEL-300G Instruction Manual Date Code 20060731...
Page 632 FFFF No Rs compensation FFFF No Xs compensation IA channel index IB channel index IC channel index VA channel index VB channel index VC channel index Reserved checksum 1-byte checksum of all preceding bytes Date Code 20060731 SEL-300G Instruction Manual...
Page 633 Scale factor offset in Fast Meter message 564200000000 Analog channel name (VB) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 564300000000 Analog channel name (VC) Analog channel type SEL-300G Instruction Manual Date Code 20060731...
Page 634 Standard Power Calculations (x = 0 if DELTA_Y = Y, x = 1 if DELTA_Y = D) FFFF No Deskew angle FFFF No Rs compensation FFFF No Xs compensation IA channel index IB channel index IC channel index VA channel index Date Code 20060731 SEL-300G Instruction Manual...
Page 635 Scale factor type 0000 Scale factor offset in Fast Meter message When relay setting DELTA_Y = Y: 564100000000 Analog channel name (VA) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message SEL-300G Instruction Manual Date Code 20060731...
Page 636 Scale factor offset in Fast Meter message 465245510000 Analog channel name (FREQ) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 564443000000 Analog channel name (VDC) Analog channel type Date Code 20060731 SEL-300G Instruction Manual...
Page 637: A5D1 Fast Meter Data Block
X and Y components of: IA, IB, IC, IN, VA, VB, VC, VN, Freq, Vdc, and Rf in 4-byte IEEE FPS 8-bytes Time stamp 58-bytes 58 Digital banks: TAR0–TAR57 1-byte Reserved checksum 1-byte checksum of all preceding bytes SEL-300G Instruction Manual Date Code 20060731...
Page 638: A5C2/A5C3 Demand/Peak Demand Fast Meter Configuration Messages
Command; Demand (A5C2) or Peak Demand (A5C3) Length # of status flag bytes Scale factors in meter message # of scale factors # of analog input channels # of samples per channel # of digital banks Date Code 20060731 SEL-300G Instruction Manual...
Page 639 Scale factor type 0000 Scale factor offset in Fast Meter message 51412B000000 Analog channel name (QA+) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 51422B000000 Analog channel name (QB+) SEL-300G Instruction Manual Date Code 20060731...
Page 640 0000 Scale factor offset in Fast Meter message 51332D000000 Analog channel name (Q3-) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message Reserved checksum 1-byte checksum of preceding bytes Date Code 20060731 SEL-300G Instruction Manual...
Page 641: A5D2/A5D3 Demand/Peak Demand Fast Meter Message
In response to the A5B9 request, the relay clears the Fast Meter (message A5D1) Status Byte. The SEL-300G Status Byte contains one active bit, STSET (bit 4). The bit is set on power up and on settings changes. If the STSET bit is set, the external device should request the A5C1, A5C2, and A5C3 messages.
Page 642: A5E0 Fast Operate Remote Bit Control
Command Length 1-byte Operate code: 00–0F clear remote bit RB1–RB16 20–2F set remote bit RB1–RB16 40–4F pulse remote bit for RB1–RB16 for one processing interval 1-byte Operate validation: 4 • Operate code + 1 Date Code 20060731 SEL-300G Instruction Manual...
Page 643: A5E3 Fast Operate Breaker Control
The relay performs the specified breaker operation if the following conditions are true: Conditions 1–5 defined in the A5E0 message are true. The breaker jumper (JMP6B) is in place on the SEL-300G main board. SEL-300G Instruction Manual Date Code 20060731...
Page 644: Id Message
Boot Firmware Identification string is the 4-digit hexadecimal checksum of the firmware. cccc is the 4-digit firmware checksum. DEVCODE is the Modbus Device ID Code for the SEL-300G. PARTNO is the part number that matches the Model Option Table number. CONFIG is configuration string for SEL internal use only.
Page 645 "RB9","RB10","RB11","RB12","RB13","RB14","RB15","RB16","0B15" "21CTC","21C1P","21C1T","21C2P","21C2T","ZLOAD","T64G","N64G","0CE1" "SV1","SV2","SV3","SV4","SV1T","SV2T","SV3T","SV4T","0BAC" "SV5","SV6","SV7","SV8","SV5T","SV6T","SV7T","SV8T","0BCC" "SV9","SV10","SV11","SV12","SV9T","SV10T","SV11T","SV12T","0CD6" "SV13","SV14","SV15","SV16","SV13T","SV14T","SV15T","SV16T","0D44" "DP8","DP7","DP6","DP5","DP4","DP3","DP2","DP1","09C4" "DP16","DP15","DP14","DP13","DP12","DP11","DP10","DP9","0B15" "ER","OOST","IN106","IN105","IN104","IN103","IN102","IN101","0C61" "ALARM","OUT107","OUT106","OUT105","OUT104","OUT103","OUT102","OUT101", "0FC8" "87B","87BL1","87BL2","87BL3","87R","87R1","87R2","87R3","0B58" "87U","87U1","87U2","87U3","50H1","50H1T","50H2","50H2T","0B48" "50Q1","50Q1T","50Q2","50Q2T","50R1","50R1T","50R2","50R2T","0C10" "59VP","59VS","CFA","BKRCF","BSYNCH","25C","25A1","25A2","0C01" "59PP2","27PP2","SF","VDIF","GENVHI","GENVLO","GENFHI","GENFLO","0EB5" "*","*","*","*","*","MPP1P","MABC1P","27VS","0866" "21PTC","21P1P","21P1T","21P2P","21P2T","MPP2P","MABC2P","*","0CD2" "IN208","IN207","IN206","IN205","IN204","IN203","IN202","IN201","0CEC" "*","*","*","*","*","*","*","*","04D0" "OUT201","OUT202","OUT203","OUT204","OUT205","OUT206","OUT207","OUT208", "0FF4" "OUT209","OUT210","OUT211","OUT212","*","*","*","*","0A5F" "50H2A","50H2B","50H2C","*","*","*","*","*","07B5" "*","*","*","*","*","*","*","*","04D0" "SET1","SET2","SET3","SET4","SET5","SET6","SET7","SET8","0C84" "SET9","SET10","SET11","SET12","SET13","SET14","SET15","SET16","0DD5" "RST1","RST2","RST3","RST4","RST5","RST6","RST7","RST8","0CEC" "RST9","RST10","RST11","RST12","RST13","RST14","RST15","RST16","0E3D" "LT1","LT2","LT3","LT4","LT5","LT6","LT7","LT8","0A24" "LT9","LT10","LT11","LT12","LT13","LT14","LT15","LT16","0B75" "OTHTRIP","OTHALRM","AMBTRIP","AMBALRM","BRGTRIP","BRGALRM", "WDGTRIP","WDGALRM","141C" "RTDFLT","*","*","*","*","*","*","2600IN","07AB" SEL-300G Instruction Manual Date Code 20060731...
Page 646: Bna Message
"RTD12TR","RTD12AL","RTD11TR","RTD11AL","RTD10TR","RTD10AL","RTD9TR", "RTD9AL","125A" "*","*","*","*","*","*","*","*","04D0" Messages for other relay models may be derived from Table 4.6: SEL-300G Relay Word Bits of this manual, using the above format. BNA Message In response to the BNA command, the relay sends names of the bits transmitted in the Status Byte in the A5D1 message.
Page 647: Appendix E: Compressed Ascii Commands
APPENDIX E: COMPRESSED ASCII COMMANDS NTRODUCTION The SEL-300G provides Compressed ASCII versions of certain ASCII commands in the relay. The Compressed ASCII commands allow an external device to obtain data from the relay in a format which directly imports into spreadsheet or database programs and that can be validated with a checksum.
Page 648: Cascii Command-Sel-300G
If a Compressed ASCII request is made for data that are not available (e.g., the history buffer is empty or invalid event request), the relay responds with the following message: <STX>"No Data Available","0668"<CR><ETX> CASCII C —SEL-300G OMMAND Display the SEL-300G Compressed ASCII configuration message by sending: CAS <CR> Model SEL-0300G0 Relay sends: <STX> "CAS",5,"yyyy"<CR> "CST",1,"yyyy"<CR>...
Page 649 "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> "15H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT","TARGETS", "IA","IB","IC","IN","IG","3I2","*","*","*","yyyy"<CR> "1D","F","I","I","I","6S","56S","I","I","I","I","I","I","I","I","I","yyyy"<CR> "14H","IA","IB","IC","IN","IG","VA(kV)","VB(kV)","VC(kV)","VN(kV)", "*","VDC", "FREQ","TRIG ","Names of elements in the relay word rows 2–57 separated by spaces","yyyy"<CR> "256D","I","I","I","I","I","F","F","F","F","F","I","F","2S","88S","yyyy"<CR> <ETX> Model SEL-0300G1 Relay sends: <STX> "CAS",5,"yyyy"<CR> "CST",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> SEL-300G Instruction Manual Date Code 20060731...
Page 650 "FREQ","TRIG ","Names of elements in the relay word rows 2–57 separated by spaces","yyyy"<CR> "256D","I","I","I","I","I","F","F","F","F","F","I","F","2S","88S","yyyy"<CR> "CEV R",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> "15H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT","TARGETS", "IA","IB","IC","IN","IG","3I2","IA87","IB87","IC87","yyyy"<CR> "1D","F","I","I","I","6S","56S","I","I","I","I","I","I","I","I","I","yyyy"<CR> "14H","IA","IB","IC","IN","IG","VA(kV)","VB(kV)","VC(kV)","VN(kV) ","*","VDC", "FREQ","TRIG ","Names of elements in the relay word rows 2–57 separated by spaces","yyyy"<CR> "256D","I","I","I","I","I","F","F","F","F","I","F","2S","88S","yyyy"<CR> <ETX> Date Code 20060731 SEL-300G Instruction Manual...
Page 651 "60D","I","I","I","I","I","F","F","F","F","F","I","F","2S","88S","yyyy"<CR> "CEV C",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> "15H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT","TARGETS", "IA","IB","IC","IN","IG","3I2","*","*","*","yyyy"<CR> "1D","F","I","I","I","6S","56S","I","I","I","I","I","I","I","I","I","yyyy"<CR> "14H","IA","IB","IC","IN","IG","VA(kV)","VB(kV)","VC(kV)","VN(kV)", "VS(kV) ","VDC", "FREQ","TRIG ","Names of elements in the relay word rows 2–57 separated by spaces","yyyy"<CR> "240D","I","I","I","I","I","F","F","F","F","F","I","F","2S","88S","yyyy"<CR> "CEV R",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> SEL-300G Instruction Manual Date Code 20060731...
Page 652 "CEV",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy"<CR> "15H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT","TARGETS", "IA","IB","IC","IN","IG","3I2","IA87","IB87","IC87","yyyy"<CR> "1D","F","I","I","I","6S","56S","I","I","I","I","I","I","I","I","I","yyyy"<CR> "14H","IA","IB","IC","IN","IG","VA(kV)","VB(kV)","VC(kV)","VN(kV)", "VS(kV) ","VDC", "FREQ","TRIG ","Names of elements in the relay word rows 2–57 separated by spaces","yyyy"<CR> "60D","I","I","I","I","I","F","F","F","F","F","I","F","2S","88S","yyyy"<CR> "CEV C",1,"yyyy"<CR> "1H","FID","yyyy"<CR> "1D","46S","yyyy"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> "1D","I","I","I","I","I","I","I","yyyy",<CR> "15H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT","TARGETS", "IA","IB","IC","IN","IG","3I2","IA87","IB87","IC87","yyyy"<CR> "1D","F","I","I","I","6S","56S","I","I","I","I","I","I","I","I","I","yyyy"<CR> Date Code 20060731 SEL-300G Instruction Manual...
Page 653: Cstatus Command-Sel-300G
Rows 2–57 separated by spaces” field. CSTATUS C —SEL-300G OMMAND Display status data in Compressed ASCII format by sending: CST <CR> Model SEL-0300G0 Relay sends: <STX>"FID","yyyy"<CR> "Relay FID string","yyyy"<CR> "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR> "IA","IB","IC","IN","VA","VB","VC","VN","MOF","*","*","*","*","+5V_PS","+5V_REG", "-5V_REG","+12V_PS","-12V_PS","+15V_PS","-15V_PS","TEMP","RAM","ROM","A/D","C R_RAM","EEPROM","IO_BRD","yyyy"<CR> ,"xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR><ETX> SEL-300G Instruction Manual Date Code 20060731...
Page 654 "Relay FID string","yyyy"<CR> "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR> "IA","IB","IC","IN","VA","VB","VC","VN","MOF","IA87","IB87","IC87","VS","+5V_PS", "+5V_REG","-5V_REG","+12V_PS","-12V_PS","+15V_PS","-15V_PS","TEMP","RAM","RO M","A/D","CR_RAM","EEPROM","IO_BRD","yyyy"<CR> ,"xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "yyyy"<CR><ETX> where: xxxx are the data values corresponding to the first line labels and yyyy is the 4-byte hex ASCII representation of the checksum. Date Code 20060731 SEL-300G Instruction Manual...
Page 655: Chistory Command-Sel-300G
Sx parameter. Defaults to 16 cycles in length unless overridden with the Ly parameter. specifies 16 samples per cycle, 15 cycle length, in primary amperes and kV. Specifies differential data report (SEL-0300G1 and SEL-0300G3 models). SEL-300G Instruction Manual Date Code 20060731...
Page 656 SEL-0300G1 and SEL-0300G3 Relay models respond to the CEV DIF command with the nth event report as shown below. Items in italics will be replaced with the actual relay data. <STX>"FID","yyyy"<CR> "Relay FID string","yyyy"<CR> "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR> Date Code 20060731 SEL-300G Instruction Manual...
Page 657 50G2T 50N1 50N1T 50N2 50N2T CC CL CLOSE ULCL 64GTC 64G1 64G1T 64G2 64G2T OOS 60LOP CLEN BKMON BCW BCWA BCWB BCWC FAULT DCLO DCHI 81D1 81D2 81D3 81D4 81D5 81D6 3PO 52A 81D1T 81D2T81D3T 81D4T 81D5T 81D6T 27B81 50L SEL-300G Instruction Manual Date Code 20060731...
Page 658 RTD6AL RTD5TR RTD5AL RTD12TR RTD12AL RTD11TR RTD11AL RTD10TR RTD10AL RTD9TR RTD9AL * * * * * * * * " These names are listed in Table 4.6: SEL-300G Relay Word Bits of this manual. Lists for other relay models may be derived using Table 4.6.
Page 659: Appendix F: Modbus Rtu Communications Protocol
Cyclical Redundancy Check (CRC) 2 bytes The SEL-300G SLAVEID setting defines the device address. Set this value to a unique number for each device on the Modbus network. For Modbus communication to operate properly, no two slave devices may have the same address.
Page 660: Modbus Responses
Force Single Coil Preset Single Register Read Exception Status Loopback Diagnostic Command Preset Multiple Registers Scattered Register Read Modbus Exception Responses The SEL-300G sends an exception code under the conditions described in Table F.3. Date Code 20060731 SEL-300G Instruction Manual...
Page 661: Cyclical Redundancy Check
CRC. If the calculated CRC matches the CRC sent by the SEL-300G, the master device uses the data received. If there is not a match, the check fails and the message is ignored. The devices use a similar process when the master sends queries.
Page 662 Returned Counter Increments Invalid Illegal Data Address Invalid Address bit to read (02h) Invalid number of bits to Illegal Data Value Illegal Register read (03h) Format error Illegal Data Value Bad Packet Format (03h) Date Code 20060731 SEL-300G Instruction Manual...
Page 663: 02H Read Input Status Command
Modbus RTU Communications Protocol The coil number assignments are defined in Table F.5. Table F.5: SEL-300G Relay Command Coils (FC01h) Coil Number Description Coil Number Description OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OUT107 ALARM OUT201 OUT202 RB10 OUT203 RB11 OUT204...
Page 664 If the number of bits requested is not evenly divisible by eight, the relay adds one more byte to maintain the balance of bits, padded by zeroes to make an even byte. Input numbers are defined in Table F.7. Table F.7: SEL-300G Relay Inputs Input Description...
Page 665 In each row, the input numbers are assigned from the right-most input to the left-most input (i.e., Input 1 is “N” and Input 8 is “EN”). Input addresses start at 0000 (i.e., Input 1 is located at Input Address 0000). SEL-300G Instruction Manual Date Code 20060731...
Page 666: 03H Read Holding Register Command
2 bytes CRC-16 A successful response from the slave will have the following format: 1 byte Slave Address 1 byte Function Code (03h) 1 byte Bytes of data (n) n bytes Data 2 bytes CRC-16 Date Code 20060731 SEL-300G Instruction Manual...
Page 667: 04H Read Input Registers Command
2 bytes CRC-16 A successful response from the slave will have the following format: 1 byte Slave Address 1 byte Function Code (04h) 1 byte Bytes of data (n) n bytes Data 2 bytes CRC-16 SEL-300G Instruction Manual Date Code 20060731...
Page 668: 05H Force Single Coil Command
Function Code (05h) 2 bytes Coil Reference 1 byte Operation Code (FF for bit set, 00 for bit clear) 1 byte Placeholder (00) 2 bytes CRC-16 Note: The command response is identical to the command request. Date Code 20060731 SEL-300G Instruction Manual...
Page 669 Modbus RTU Communications Protocol F-11 The coil numbers supported by the SEL-300G are listed in Table F.11. The physical coils (coils 1–20) are self-resetting. Pulsing a set remote bit clears the remote bit. Table F.11: SEL-300G Relay Command Coils (FC05h)
Page 670: 06H Preset Single Register Command
Format error Illegal Data Value Bad Packet Format (03h) 07h Read Exception Status Command The SEL-300G uses this function to allow a Modbus master to read the present status of the relay and protected circuit. Date Code 20060731 SEL-300G Instruction Manual...
Page 671: 08H Loopback Diagnostic Command
(03h) 08h Loopback Diagnostic Command The SEL-300G uses this function to allow a Modbus master to perform a diagnostic test on the Modbus communications channel and relay. When the subfunction field is 0000h, the relay returns a replica of the received message.
Page 672: 10H Preset Multiple Registers Command
2 bytes Starting Address 2 bytes Number of Registers to Write 1 byte Bytes of Data (n) n bytes Data 2 bytes CRC-16 A successful response from the slave will have the following format: Date Code 20060731 SEL-300G Instruction Manual...
Page 673: 64H Scattered Register Read
(03h) 64h Scattered Register Read The SEL-300G uses this function to allow a Modbus master to read noncontiguous registers in a single request. A maximum of 100 registers can be read in a single query. Table F.16: 64h Scattered Register Read Command...
Page 674: Controlling Output Contacts And Remote Bits Using Modbus
(02h) Controlling Output Contacts and Remote Bits Using Modbus The SEL-300G Modbus Register Map (Table F.20) includes three fields that allow a Modbus master to force the relay to perform a variety of operations. Use Modbus function codes 06h or 10h to write the appropriate command codes and parameters into the registers shown in Table F.17.
Page 675 06h, 10h Pulse OUT211 1–30 seconds duration (defaults to 1 second) 06h, 10h Pulse OUT212 1–30 seconds duration (defaults to 1 second) 06h, 10h Change Act. 1–2 06h, 10h Group Switch Protocol 0080h 06h, 10h SEL-300G Instruction Manual Date Code 20060731...
Page 676: Error Codes
7–26 are issued, the relay will return error code 04 (device error). • If the relay is disabled while Reset Targets command (05) is issued, the relay will return error code 04h (device error). Date Code 20060731 SEL-300G Instruction Manual...
Page 677: Reading Event Data Using Modbus
The Modbus Register Map (Table F.20) provides a feature that allows you to download complete event data via Modbus. The SEL-300G stores the 29 latest event summaries and the 29 latest 15- cycle or the 15 latest 30-cycle full-length event reports. Please refer to Section 11: Event Reports and SER Functions for a detailed description.
Page 678 Relay Element Status Row 35 Relay Element Status Row 36 Relay Element Status Row 37 Relay Element Status Row 38 Relay Element Status Row 39 Relay Element Status Row 40 Relay Element Status Row 41 Date Code 20060731 SEL-300G Instruction Manual...
Page 679: Reading History Data Using Modbus
— — — — 0019 (see Note 1) 001A– Relay ID ASCII string — — — — 002D (see Note 1) 002E– Terminal ID ASCII string — — — — 004B (see Note 1) SEL-300G Instruction Manual Date Code 20060731...
Page 680 — 0=OK, 1=Warn, 2=fail 0066 Channel VS offset value –5000 5000 0067 Channel VS status message — — — — — 0=OK, 1=Warn, 2=fail 0068 Master DC offset (MOF) in A/D –5000 5000 circuit Date Code 20060731 SEL-300G Instruction Manual...
Page 681 — — — — — 0=OK, 2=fail 0080 RELAY STATUS — — — — — 0=Enabled, 2= Disabled 0081– Reserved — — — — — 008F Instantaneous Metering 0090 Phase A Current Amps 65535 SEL-300G Instruction Manual Date Code 20060731...
Page 682 MVars –32767 32767 (DELTA_Y=Y)** 00AC Power Factor Phase B 0.01 (DELTA_Y=Y)** 00AD LEAD/LAG Phase B — — — — — (DELTA_Y=Y)** 0 = LAG, 1 = LEAD 00AE Megawatts Phase C MWatts –32767 32767 Date Code 20060731 SEL-300G Instruction Manual...
Page 683 0.01 00C8 Frequency Hertz 65535 0.01 00C9 DC Voltage 65535 00CA Volts/Hertz 65535 0.01 Differential Currents 00CB Operate current for winding 1 Amps 65535 0.01 00CC Restraint current for winding 1 Amps 65535 0.01 SEL-300G Instruction Manual Date Code 20060731...
Page 684 –32767 32767 (DELTA_Y=Y)** 00E3 Megawatts 3 Phase MWatts –32767 32767 00E4 Megavars Phase A MVars –32767 32767 (DELTA_Y=Y)** 00E5 Megavars Phase B MVars –32767 32767 (DELTA_Y=Y)** 00E6 Megavars Phase C MVars –32767 32767 (DELTA_Y=Y)** Date Code 20060731 SEL-300G Instruction Manual...
Page 685 –32767 32767 (DELTA_Y=Y)** 00FE Megawatts Phase B MWatts –32767 32767 (DELTA_Y=Y)** 00FF Megawatts Phase C MWatts –32767 32767 (DELTA_Y=Y)** 0100 Megawatts 3 Phase MWatts –32767 32767 0101 Megavars Phase A MVars –32767 32767 (DELTA_Y=Y)** SEL-300G Instruction Manual Date Code 20060731...
Page 686 Megawatts 3 Phase MWattH 65535 0118 Megavars Phase A MVarH 65535 (DELTA_Y=Y)** 0119 Megavars Phase B MVarH 65535 (DELTA_Y=Y)** 011A Megavars Phase C MVarH 65535 (DELTA_Y=Y)** 011B Megavars 3 Phase MVarH 65535 Energy Out Date Code 20060731 SEL-300G Instruction Manual...
Page 687 Min Phase A Current Time 0135 0136 minute 0137 hour 0138 Min Phase A Current Date 0139 month 013A year 1992 2999 013B Max Phase B Current Amps 65535 013C Max Phase B Current Time 013D SEL-300G Instruction Manual Date Code 20060731...
Page 688 65535 015C Max Neutral Current Time 015D 015E minute 015F hour 0160 Max Neutral Current Date 0161 month 0162 year 1992 2999 0163 Min Neutral Current Amps 65535 0164 Min Neutral Current Time 0165 Date Code 20060731 SEL-300G Instruction Manual...
Page 689 Min Phase A Voltage Time 0185 0186 minute 0187 hour 0188 Min Phase A Voltage Date 0189 month 018A year 1992 2999 018B Max Phase B Voltage 65535 018C Max Phase B Voltage Time 018D SEL-300G Instruction Manual Date Code 20060731...
Page 690 Max Sync Voltage 65535 01AC Max Sync Voltage Time 01AD 01AE minute 01AF hour 01B0 Max Sync Voltage Date 01B1 month 01B2 year 1992 2999 01B3 Min Sync Voltage 65535 01B4 Min Sync Voltage Time 01B5 Date Code 20060731 SEL-300G Instruction Manual...
Page 691 Voltage Date 01D1 month 01D2 year 1992 2999 01D3 Min Terminal 3 Harmonic 65535 0.01 Voltage 01D4 Min Terminal 3 Harmonic Voltage Time 01D5 01D6 minute 01D7 hour 01D8 Min Terminal 3 Harmonic Voltage Date SEL-300G Instruction Manual Date Code 20060731...
Page 692 65535 01F4 Min Phase A 87 Current Time 01F5 01F6 minute 01F7 hour 01F8 Min Phase A 87 Current Date 01F9 month 01FA year 1992 2999 01FB Max Phase B 87 Current Amps 65535 Date Code 20060731 SEL-300G Instruction Manual...
Page 693 021C Max 3 Phase Mega Watts Time 021D 021E minute 021F hour 0220 Max 3 Phase Mega Watts Date 0221 month 0222 year 1992 2999 0223 Min 3 Phase Mega Watts MWatts –32767 32767 SEL-300G Instruction Manual Date Code 20060731...
Page 694 Temp Input 4 degrees –32767 32767 0246 Temp Input 5 degrees –32767 32767 0247 Temp Input 6 degrees –32767 32767 0248 Temp Input 7 degrees –32767 32767 0249 Temp Input 8 degrees –32767 32767 Date Code 20060731 SEL-300G Instruction Manual...
Page 695 BKR CLOSED LOP 60 TRIP 21/51V 0261 Targets 2 65535 27/59 0262 Input Contact Status 1 65535 IN106 IN105 IN104 IN103 IN102 IN101 0263 Input Contact Status 2 65535 IN208 IN207 IN206 IN205 IN204 SEL-300G Instruction Manual Date Code 20060731...
Page 696 OUT211 OUT212 0267 Row 2 65535 24TC 24D1 24D1T 24C2 24C2T 24CR 0268 Row 3 65535 27P1 27P2 27PP1 27V1 59P1 59P2 59G1 59G2 0269 Row 4 65535 32PTC 32P1 32P1T 32P2 32P2T 59V1 Date Code 20060731 SEL-300G Instruction Manual...
Page 697 51CT 51CR 026D Row 8 65535 51GTC 51GT 51GR 51NTC 51NT 51NR 026E Row 9 65535 51VTC 51VT 51VR PDEM QDEM GDEM NDEM 026F Row 10 65535 50P1 50P1T 50P2 50P2T 50G1 50G1T 50G2 SEL-300G Instruction Manual Date Code 20060731...
Page 698 DCHI 0273 Row 14 65535 81D1 81D2 81D3 81D4 81D5 81D6 0274 Row 15 65535 81D1T 81D2T 81D3T 81D4T 81D5T 81D6T 27B81 0275 Row 16 65535 ONLINE BND1A BND1T BND2A BND2T BND3A BND3T BNDA Date Code 20060731 SEL-300G Instruction Manual...
Page 699 Row 18 65535 TRIP TRIP1 TRIP2 TRIP3 TRIP4 0278 Row 19 65535 ULTR1 ULTR2 ULTR3 ULTR4 0279 Row 20 65535 027A Row 21 65535 LB10 LB11 LB12 LB13 LB14 LB15 LB16 027B Row 22 65535 SEL-300G Instruction Manual Date Code 20060731...
Page 700 SV2T SV3T SV4T 027F Row 26 65535 SV5T SV6T SV7T SV8T 0280 Row 27 65535 SV10 SV11 SV12 SV9T SV10T SV11T SV12T 0281 Row 28 65535 SV13 SV14 SV15 SV16 SV13T SV14T SV15T SV16T Date Code 20060731 SEL-300G Instruction Manual...
Page 701 IN101 0285 Row 32 65535 ALARM OUT107 OUT106 OUT105 OUT104 OUT103 OUT102 OUT101 0286 Row 33 65535 87BL1 87BL2 87BL3 87R1 87R2 87R3 0287 Row 34 65535 87U1 87U2 87U3 50H1 50H1T 50H2 50H2T SEL-300G Instruction Manual Date Code 20060731...
Page 702 Row 38 65535 87NTC 87N1P 87N1T 87N2P 87N2T MPP1P MABC1P 27VS 028C Row 39 65535 21PTC 21P1P 21P1T 21P2P 21P2T MPP2P MABC2P 028D Row 40 65535 IN208 IN207 IN206 IN205 IN204 IN203 IN202 IN201 Date Code 20060731 SEL-300G Instruction Manual...
Page 703 OUT206 OUT207 OUT208 0290 Row 43 65535 OUT209 OUT210 OUT211 OUT212 0291 Row 44 65535 50H2A 50H2B 50H2C 0292 Row 45 65535 0293 Row 46 65535 SET1 SET2 SET3 SET4 SET5 SET6 SET7 SET8 SEL-300G Instruction Manual Date Code 20060731...
Page 704 RST10 RST11 RST12 RST13 RST14 RST15 RST16 0297 Row 50 65535 0298 Row 51 65535 LT10 LT11 LT12 LT13 LT14 LT15 LT16 0299 Row 52 65535 OTHTRIP OTHALRM AMBTRIP AMBALRM BRGTRIP BRGALRM WDGTRIP WDGALRM Date Code 20060731 SEL-300G Instruction Manual...
Page 705 (See Note 5) 02A1 Parameter 1 02A2 Parameter 2 02A3– Reserved 02AF History Records (See Note 6) 02B0 Number of History Records — — 02B1 History Selection (RW) (see Note 6) 02B2 Event Time 02B3 SEL-300G Instruction Manual Date Code 20060731...
Page 706 Event Channel Selection (RW) (See Note 6) 02D3 ¼ cycle (See Note 7) –32767 32767 02D4 ½ cycle –32767 32767 02D5 ¾ cycle –32767 32767 02D6 1 cycle –32767 32767 02D7 1 ¼ cycle –32767 32767 Date Code 20060731 SEL-300G Instruction Manual...
Page 707 02FA 10 cycle –32767 32767 02FB 10 ¼ cycle –32767 32767 02FC 10 ½ cycle –32767 32767 02FD 10 ¾ cycle –32767 32767 02FE 11 cycle –32767 32767 02FF 11 ¼ cycle –32767 32767 SEL-300G Instruction Manual Date Code 20060731...
Page 708 0322 20 cycle –32767 32767 0323 20 ¼ cycle –32767 32767 0324 20 ½ cycle –32767 32767 0325 20 ¾ cycle –32767 32767 0326 21 cycle –32767 32767 0327 21 ¼ cycle –32767 32767 Date Code 20060731 SEL-300G Instruction Manual...
Page 709 29 ½ cycle –32767 32767 0349 29 ¾ cycle –32767 32767 034A 30 cycle –32767 32767 Event Summary Data (requires Channel 16 Selection. See Note 6.) 034B Event Time 034C 034D minute 034E hour SEL-300G Instruction Manual Date Code 20060731...
Page 710 0362 Current IC87 Amps 65535 0363– Reserved 036F Sequence of Event Records (See Note 6) 0370 Number of Sequence of Events — — Records 0371 SERSelection (RW) (See Note 5) 0372 SER Time 0373 Date Code 20060731 SEL-300G Instruction Manual...
Page 711 0396 Generator Frequency 18000 0.01 0397 System Frequency 7000 0.01 0398 Voltage Diff. 65535 0.01 0399 Generator Voltage 65535 0.01 039A System Voltage 65535 0.01 039B Slip Compensated Phase Angle degree –18000 18000 0.01 SEL-300G Instruction Manual Date Code 20060731...
Page 712 Last Reset Time 03BC minute 03BD hour 03BE Last Reset Date 03BF month 03C0 year 1992 2999 03C1 64FOPT Setting value 0 = NONE (OFF), 1 = EXT (ON) 03C2 Field Insulation Rf (kOhms) 65000 Date Code 20060731 SEL-300G Instruction Manual...
Page 713 03E3 Operating History Since (Date) 03E4 month 03E5 year 1992 2999 03E6 Running hours 03E7 minute 03E8 hour 03E9 03EA Stopped hours 03EB minute 03EC hour 03ED 03EE Full load hours 03EF minute SEL-300G Instruction Manual Date Code 20060731...
Page 714 0415 Illegal function code / Op code 65535 0416 Illegal register 65535 0417 Illegal write 65535 0418 Bad packet format 65535 0419 Bad packet length 65535 041A– Reserved 0420 1FFB Device Tag # 15045 Date Code 20060731 SEL-300G Instruction Manual...
Page 715 History data, SER data, Sync Check Report data, or Generator Operation Profile data via Modbus. The SEL-300G stores the twenty-nine latest event reports, twenty-nine latest event summaries (History data), 512 SER, Generator Operating Profile data, and three Sync Check Report in nonvolatile memory.
Page 716 Note 10 If E81AC = N, then all data from row of 81AC Off–Freq Time Accumulator Since to row of Frequency Band 6, Time Accumulator and % of limit setting will be set as 0x8000. Date Code 20060731 SEL-300G Instruction Manual...
Page 717 This document gives instructions for installing the QuickSet software. A Quick ERATOR Tour guide is available as part of the online help. Note: Like all SEL relay products, the SEL-300G can also be set and operated by a simple ASCII teminal. HE AC ERATOR...
Page 718 QuickSet software in one of the following ways: ERATOR • Double-click the QuickSet software icon if you have a desktop shortcut. ERATOR • Choose Programs > SEL Applications and select the QuickSet software ERATOR icon to start the program. Date Code 20060731 SEL-300G Instruction Manual...
Page 719 E87 = G (Partial) Figure H.1: Protected Generator With No Step-Up Transformer Generator Winding 1 Winding 2 IA87 IB87 IC87 TRCON=DACY CTCON=Y SEL-300G (Partial) DWG: M300G191 Figure H.2: Delta-Wye Power Transformer With Wye High-Side CT Connections SEL-300G Instruction Manual Date Code 20060731...
Page 720 Figure H.3: Delta-Wye Power Transformer With Wye High-Side CT Connections Generator Winding 1 Winding 2 IA87 IB87 IC87 TRCON=DACY CTCON=DAC DWG: M300G188 SEL-300G (Partial) Figure H.4: Delta-Wye Power Transformer With Delta High-Side CT Connections Date Code 20060731 SEL-300G Instruction Manual...
Page 721 Figure H.5: Delta-Wye Power Transformer With Delta High-Side CT Connections Generator Winding 1 Winding 2 IA87 IB87 IC87 TRCON=DACDAC CTCON=Y SEL-300G (Partial) DWG: M300G187 Figure H.6: Delta-Delta Power Transformer With Wye High-Side CT Connections SEL-300G Instruction Manual Date Code 20060731...
Page 722 DWG: M300G192 Figure H.7: Delta-Delta Power Transformer With Wye High-Side Connections Generator Winding 1 Winding 2 IA87 IB87 IC87 TRCON=YDAC CTCON=Y SEL-300G DWG: M300G194 (Partial) Figure H.8: Wye-Delta Power Transformer With Wye High-Side Connections Date Code 20060731 SEL-300G Instruction Manual...
Page 723 (Partial) Figure H.9: Wye-Delta Power Transformer With Wye High-Side Connections Generator Winding 1 Winding 2 IA87 IB87 IC87 TRCON=YY CTCON=Y SEL-300G (Partial) DWG: M300G189 Figure H.10: Wye-Wye Power Transformer With Wye High-Side CT Connections SEL-300G Instruction Manual Date Code 20060731...
Page 725 SEL-300G Relay Command Summary Access The only significant thing that can be done at Access level 0 is to go to Access Level 1 or Level 0 use the HELP command. The screen prompt is: = Commands Enter Access Level 1. If the main board password jumper is not in place, the relay prompts for the entry of the Access Level 1 password in order to enter Access Level 1.
Page 726 SEL-300G Relay Command Summary Access The Access Level 1 commands primarily allow the user to look at information Level 1 (e.g., settings, metering), not change it. The screen prompt is: => Commands (continued) HIS n Show a brief summary of the n latest event reports.
Page 727 SEL-300G Relay Command Summary Access Access Level B commands primarily allow the user to operate relay parameters and output Level B contacts. You can execute all Access Level 1 commands from Access Level B. The Commands screen prompt is: = =>...

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