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Basler BE1-951 Instruction Manual

Basler BE1-951 Instruction Manual

Overcurrent protection system

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INSTRUCTION MANUAL

FOR

OVERCURRENT PROTECTION SYSTEM

Publication: 9 3289 00 990

Revision: F

08/2002

Courtesy of NationalSwitchgear.com

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Page 1 INSTRUCTION MANUAL OVERCURRENT PROTECTION SYSTEM Publication: 9 3289 00 990 Revision: F 08/2002 Courtesy of NationalSwitchgear.com...
Page 2 INTRODUCTION This instruction manual provides information about the operation and installation of the BE1-951 Overcurrent Protection System. A summary of the information provided is listed below. General information, specifications, and a Quick Start guide. Functional description and setting parameters for the inputs and outputs, protection and control functions, metering functions, and reporting and alarm functions.
Page 3 First Printing October 1999 Printed in USA © 1999 - 2002 Basler Electric Co., Highland, IL 62249 August 2002 CONFIDENTIAL INFORMATION OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY.
Page 4 PROGRAM FIRMWARE VERSION Change 2.52.01/10-01-01 Added real time clock with 8 hour capacitor backup on all BE1-951 version 2 relays. Added support for 4000 point load profile demand log and battery backup for real time clock. 1.51.00/3-1-01 Added or revised the following protection and control functions:...
Page 5 This version was released after release of version 1.50.00, which was a major upgrade in functionality for the relay. This version was released to correct bugs in the original functionality and was mailed to all purchasers of the BE1-951 Over current Protection System.
Page 6 V phase to neutral base regardless of the three phase VT connection parameter setting. 1.00.01/5-12-99 Initial Release Hardware Version Change 10-5-01 Added battery backup to H1 case only. Change overlay to incorporate new adhesive label. 05-30-99 Initial Release. BE1-951 Introduction Courtesy of NationalSwitchgear.com...
Page 7 Detection was updated to cover enhancements made to the 60FL A/7036 function. 2. A combined index for both volumes was placed at the end of each volume. 3. Minor revisions and corrections were made throughout the manual. Introduction BE1-951 Courtesy of NationalSwitchgear.com...
Page 8 ............i BE1-951 Introduction Courtesy of NationalSwitchgear.com...
Page 9: Table Of Contents
Instantaneous Overcurrent Functions ......... . . 1-10 BE1-951 General Information Courtesy of NationalSwitchgear.com...
Page 10 Table 1-1. Burden ..............1-15 General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 11: Section 1 • General Information
Alternately, a custom scheme can be created using BESTlogic. A simplified "How To Get Started" procedure for BE1-951 users is provided in Section 2, Quick Start. FEATURES The BE1-951 relay includes many features for the protection, monitoring, and control of power system equipment.
Page 12: Contact Sensing Inputs
(27X, 59X, 159X). Auxiliary voltage protection elements can be set to individually monitor the auxiliary voltage fundamental, third harmonic, or phase 3V voltages. Ground unbalance protection is provided when the optional auxiliary voltage input is connected to a source of 3V such as a broken delta VT. General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 13: Directional Power Protection
27P, 47, 59P, and the 51/27 function (60FL). Directional Power Protection One directional power element (32) is included in the BE1-951 and can be set for forward or reverse power protection. The relay can be used for any application requiring directional power flow detection including intertie protection (interconnects between an electric utility and a source of non-utility generation).
Page 14: Metering Functions
Energy Data Reporting Energy information in the form of watt-hours and var-hours is measured and reported by the BE1-951. Both positive and negative values are reported in three-phase, primary units. Relay Identification Two free-form fields are provided for the user to enter information to identify the relay.
Page 15: Fault Reporting
IEEE, Comtrade format to allow using any fault analysis software. Basler Electric provides a Windows® based program called BESTwave that can read and plot binary or ASCII format files that are in the COMTRADE format.
Page 16: Human-Machine Interface (Hmi)
Human-Machine Interface (HMI) Each BE1-951 comes with a front panel display with five LED indicators for Power Supply Status, Relay Trouble Alarm, Minor Alarm, Major Alarm, and Trip. The lighted, liquid crystal display (LCD) allows the relay to replace local indication and control functions such as panel metering, alarm annunciation, and control switches.
Page 17: Model And Style Number Description
Sample Style Number Style number identification chart, Figure 1-1, defines the electrical characteristics and operational features included in BE1-951 Relays. For example, if the style number were E3N1H0N, the device would have the following characteristics and features. BE1-951 - Three-phase current and three-phase voltage inputs...
Page 18: Operational Specifications
OPERATIONAL SPECIFICATIONS BE1-951 relays have the following features and capabilities. Metered Current Values And Accuracy Current Range: 5A: 0.5 to 15 1A: 0.1 to 3.0 ±1% of reading, ±1 least significant digit at 25 C Accuracy: ±0.02% per C...
Page 19: Real Time Clock
8 to 24 hours, depending on conditions Battery: Greater than 5 years. Backup Battery (Optional): Lithium battery 3.6 Vdc, 0.95 AH (Basler P/N: 9 3187 00 012) (Applied Power P/N: BM551902) IRIG Supports IRIG Standard 200-98, Format B002 Input Signal:...
Page 20: Time-Current Characteristic Curves
4 cycles maximum for a current of 1.5 times pickup. Five cycles maximum for a current of 1.05 times the pickup setting Directional Element(67) Mode: Forward, Reverse, Nondirectional 67P Polarization: Positive Sequence w/Memory Negative Sequence 67Q Polarization: Negative Sequence 1-10 General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 21: Volts/Hz (24)
0.050 to 600 seconds Increment: 1 millisecond from 0 to 999 milliseconds 0.1 second from 1.0 to 9.9 seconds 1 second from 10 to 600 seconds Accuracy: ±0.5% or ±1 cycle whichever is greater BE1-951 General Information 1-11 Courtesy of NationalSwitchgear.com...
Page 22: Auxiliary Undervoltage Function (27X)
1 to 150 V Setting Increment: 0.1 V (for a range of 0 - 99.9) 1.0 V (for a range of 100 - 300) Pickup Accuracy: ±2% or 1 V whichever is greater Dropout/Pickup Ratio: 1-12 General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 23: Over/Underfrequency Functions (81, 181, 281, 381, 481, 581)
0 to 9,999 seconds Increments: 1 millisecond from 0 to 999 milliseconds; 0.1 second from 1.0 to 9.9 seconds; 1 second from 10 to 9,999 seconds Accuracy: ±0.5% or ±3/4cycles, whichever is greater BE1-951 General Information 1-13 Courtesy of NationalSwitchgear.com...
Page 24: Automatic Setting Group Characteristics
One Second Rating: 600 V, Line to Neutral Burden:Less than 1 VA @ 150Vac Analog To Digital Converter Type: 16 bit Sampling Rate: 12 samples per cycle, adjusted to input frequency (10-75 Hz) 1-14 General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 25: Power Supply
LED (light emitting diode) back-light 40 C ( 40 F) to +70 C (+158 F) Operating Temperature: Display contrast may be impaired at 20 C ( 4 F) temperatures below BE1-951 General Information 1-15 Courtesy of NationalSwitchgear.com...
Page 26: Surge Withstand Capability
Number 14-M91, CSA File Number LR23131- 140s. Note: Output contacts are not CSA certified for voltages greater than 250 V. DNP Certified DNP 3.0 IED certified, Subset Level 2, 06/20/00, by SUBNET Solutions, Inc. 1-16 General Information BE1-951 Courtesy of NationalSwitchgear.com...
Page 27: Environment
Maximum weight 12 pounds Case Size H1 Case: 10.5" W x 3.47" H x 9.10" D with mounting flanges. (8.50" W without mounting flanges) S1 Case: 6.65" W x 9.32" H x 9.405" D BE1-951 General Information 1-17 Courtesy of NationalSwitchgear.com...
Page 28 Batch Command Text File Operations ........2-5 BESTCOMS for BE1-951, Graphical User Interface ......2-5 GETTING STARTED .
Page 29: Section 2 • Quick Start
SECTION 2 • QUICK START GENERAL This section provides an overview of the BE1-951 Utility Multifunction Relay. You should be familiar with the concepts behind the user interfaces and BESTlogic before you begin reading about the detailed BE1-951 functions. Sections 3 through 6 in the Instruction Manual, describe each function of the BE1-951 in detail.
Page 30: Bestlogic
BESTlogic Each of the protection and control functions in the BE1-951 is implemented as an independent function block that is equivalent to a single function, discrete device counterpart. Each independent function block has all of the inputs and outputs that the discrete component counterpart might have. Programming BESTlogic is equivalent to choosing the devices required by your protection and control scheme and drawing schematic diagrams to connect the inputs and outputs to obtain the desired operational logic.
Page 31: Output Logic Settings
USER INTERFACES Two user interfaces are provided for interacting with the BE1-951 relay: one is the front panel HMI, and the other is ASCII communications. The front panel HMI provides access to a subset of the total functionality of the device.
Page 32: Ascii Command Communications
Figure 2-2. Menu Screens Numbering Example ASCII Command Communications The BE1-951 relay has three independent communications ports for serial communications. A computer terminal or PC running a terminal emulation program such as Windows® HyperTerminal® can be connected to any of the three ports so that commands can be sent to the relay. Communication with the relay uses a simple ASCII command language.
Page 33: Ascii Command Operations
In batch download type operations, the user creates an ASCII text file of commands and sends it to the relay. To facilitate this process, the response from a multiple read command is output from the BE1-951 in command format. So the user need only enter S for Set (with no subgroup) and the relay responds with all of the setting commands and their associated parameters.
Page 34: Getting Started
The BE1-951 measures the A phase, B phase, and C phase current magnitudes directly from the three current sensing inputs. The neutral and negative sequence magnitudes are calculated from the fundamental component of each of the three-phase currents.
Page 35: Checking The State Of Inputs
What voltage level is used to develop current flow through the contact sensing inputs? Voltage level is dependent on the power supply option (called out in the BE1-951 style chart). See Section 12, Installation , for additional information. TP1-1021 Quick Start Courtesy of NationalSwitchgear.com...
Page 36 The answer to the question is yes and no. In general, once the fault goes away the output contacts open. The BE1-951 does offer an option to ensure that the contact will stay closed for at least 200 milliseconds. See Section 3, Input And Output Functions for additional information on that function.
Page 37 Can the IRIG signal be daisy-chained to multiple BE1-951 units? Yes, multiple BE1-951 units can use the same IRIG-B input signal by daisy chaining the BE1-951 inputs. The burden data is nonlinear, approximately 4 kilo-ohms at 3.5 Vdc and 3 kilo-ohms at 20 Vdc.
Page 38 Table 3-4. Hold Timer Settings ............3-8 BE1-951 Input and Output Functions Courtesy of NationalSwitchgear.com...
Page 39: Section 3 • Input And Output Functions
BE1-951 uses for calculating the power quantities. POWER SYSTEM INPUTS Power system inputs as described in the introduction, are sampled 12 times per cycle by the BE1-951. The BE1-951 measures the voltage and current from these samples and uses those measurements to calculate other quantities.
Page 40: Frequency Measurement
Power system frequency is monitored on the A phase voltage input or the AB voltage input when in three- wire mode. When the applied voltage is greater than 10 volts, the BE1-951 measures the frequency. The measured frequency is used by the 81 function and applies to all measurements and calculations .
Page 41: Measurement Functions Setup
A, B, or C based on sensing type and 3 5V Measurement Functions Setup Current Input Circuit Settings. The BE1-951 requires setting information on the CT ratio. These settings are used by the metering and fault reporting functions to display measured quantities in primary units.
Page 42: Sg-Ct Command
1. Enter the following parameters: VT ratio is 2400:120, connected single phase to A-N. The 27/59 and 51/27R modes must be PN in this case so this parameter is optional. >SG-VTP=2400:120,AN,PN,PN or SG-VTP=20,AN,PN,PN Input and Output Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 43: Sg-Vtx Command
Nominal voltage(s) of the external dc source(s) must fall within the relay dc power supply input voltage range. To enhance user flexibility, the BE1-951 relay uses wide range ac/dc power supplies that cover several common control voltage ratings. To further enhance flexibility, the input circuits are designed to respond to voltages at the lower end of the control voltage range while not overheating at the high end of the control voltage range.
Page 44: Digital Input Conditioning Function
* Since the input conditioning function is evaluated every quarter cycle, the setting is internally rounded to the nearest multiple of 4.16 milliseconds (60 Hz systems) or 5 milliseconds (50 Hz systems). Input and Output Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 45: Sg-In Command
OUTPUTS BE1-951 relays have five general purpose output contacts (OUT1 through OUT5) and one fail-safe, normally closed (when de-energized), alarm output contact (OUTA). Each output is isolated and rated for tripping duty. OUT1 through OUT5 are Form A (normally open) and OUTA is Form B (normally closed).
Page 46: Retrieving Output Status
If the tripping contact opens before the dc current is interrupted, the contact may be damaged. Of the three items, only item three is an issue for electronic relays like the BE1-951. To prevent the output relay contacts from opening prematurely, a hold timer can hold the output contact closed for a minimum of 200 milliseconds.
Page 47: Sg-Hold Command
Pulsing an Output Contact Pulsing BE1-951 outputs provides the same function as the push-to-energize feature of other Basler Electric solid-state relays. This feature is useful when testing the protection and control system. When pulsed, an output contact changes from the current state (as determined by the virtual output logic expression) to the opposite state for 200 milliseconds.
Page 48: Returning An Output Contact To Logic Control
A 0 or 1 indicates that the logic has been overridden and the contact is held open (0) or closed (1) state. A P indicates that the contact is being pulsed and will return to logic control automatically. See Section 6, Reporting and Alarm Functions, General Status Reporting for more information. 3-10 Input and Output Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 49 S<g>-27P and S<g>-59P Commands ........4-29 BE1-951 Protection and Control Courtesy of NationalSwitchgear.com...
Page 50 BESTlogic Settings for x43 Virtual Selector Switches ......4-55 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 51 Figure 4-40. 86 Element ............4-58 BE1-951 Protection and Control Courtesy of NationalSwitchgear.com...
Page 52 Equation 4-5. Time To Reset ............4-25 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 53: Section 4 • Protection And Control
SECTION 4 • PROTECTION AND CONTROL INTRODUCTION The BE1-951 provides many functions that can be used to protect and control power system equipment in and around a protected zone. BE1-951 protection functions include: Instantaneous Overcurrent with Settable Time Delay (50TP, 50TN, 50TQ, 150TP, 150TN, 150TQ)
Page 54: Sg-Sgcon Command
SGCON time setting. This output can be used in the programmable alarms function if it is desired to monitor when the BE1-951 changes to a new setting group. See Section 6, Reporting and Alarms Functions, Alarms Function for more information on using alarm outputs.
Page 55: Setting Bestlogic Settings, Setting Group Control Function Logic
Selection of the active setting group provided by this function logic can also be overridden. When logic override is used, a setting group is made active and the BE1-951 stays in that group regardless of the state of the manual logic control conditions.
Page 56: Automatic Setting Group Control
For instance, if the relay senses current drop below a very small amount for a period of time, indicating an open breaker, then the relay may move to an Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 57: Automatic Control By Monitoring Line Current
(5 minutes). After 5 minutes, at time = 37, with the current still above setting group three threshold, setting group three becomes active and the setting group change output pulses. At time = BE1-951 Protection and Control...
Page 58 50 percent of pickup, the setting group one return timer begins timing. After ten minutes, setting group one output goes FALSE, the setting group returns to setting group zero, and the setting group change output pulses TRUE. Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 59: Group Control By Monitoring Reclose Status
The points in the reclose process that the 791, 792, 793,and 794 setting causes a change to the desired setting group is when a) the referenced reclose occurs and b) after the breaker closes. For instance, SP- BE1-951 Protection and Control...
Page 60 3 until RESET is reached or breaker closed from lockout, at which time the setting group returns to group 0. The relay would never use setting group 1 or 2. SL-GROUP = 1,0,0,0,0,/0 SP-GROUP1 = 0,0,0,0,793 SP-GROUP2 = 0,0,0,0,792 SP-GROUP3 = 0,0,0,0,791 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 61 0. An alternative method to get into group 2 for this scenario would be to use the cold load pickup feature for group 2 as described in the previous section. SL-GROUP = 1,0,0,79LO,0,/79LO SP-GROUP1 = 0,0,0,0,791 SP-GROUP2 = 0,0,0,0,51P SP-GROUP3 = 0,0,0,0,51P BE1-951 Protection and Control Courtesy of NationalSwitchgear.com...
Page 62: Setting Automatic Setting Group Control
If one of the recloser shots is entered as the prot_ele setting, the sw_time, sw_level, ret_time, and ret_level parameters are not required and should be replaced with comma delimiters. 4-10 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 63: Sp-Group Command
If more than 30 seconds elapse after issuing a CS-GROUP command, the CO-GROUP command will be rejected. CS/CO-GROUP Command Examples 1. Read the current status of setting group override. >CO-GROUP BE1-951 Protection and Control 4-11 Courtesy of NationalSwitchgear.com...
Page 64: Retrieving Setting Group Status Information
6, Reporting and Alarm Functions, General Status Reporting provides more information about determining logic override status. OVERCURRENT PROTECTION The BE1-951 includes instantaneous elements for Phase, Neutral, and Negative Sequence, as well as time- overcurrent elements for Phase, Neutral or Ground, and Negative Sequence. 50T Instantaneous Overcurrent Protection with Settable Time Delay There are two BESTlogic elements for phase (50TP and 150TP), two elements for ground (50TN and 150TN), and two elements for negative sequence (50TQ and 150TQ) instantaneous overcurrent protection.
Page 65: Bestlogic Settings For Instantaneous Overcurrent Elements
>SL-50TN=G,IN1 NOTE If the BE1-951 has 5 ampere phase inputs and a 1 ampere independent ground input, the valid pickup setting range of the neutral overcurrent functions will depend on the logic mode setting which designates whether the three-phase residual or the independent ground input is to be monitored.
Page 66: Operating Settings For Instantaneous Overcurrent Elements
Current Measurement Functions for more information about this setting. If the nominal frequency setting is being changed from the default (60 hertz), and time delay settings are being set in cycles, the frequency setting should be entered and saved before making any time delay settings changes. 4-14 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 67: Retrieving Logic Output Status Information
Reporting for more information. 51 Time-Overcurrent Element BE1-951 relays have one element for phase (51P), two elements for neutral (51N and 151N), and one element for negative sequence (51Q) inverse time-overcurrent protection. Figure 4-9 shows the 51 elements. The 51N, 151N, and 51Q elements are identical in configuration. Each element has two outputs: Pickup (PU) and Trip (T).
Page 68: Command
Comments: g = setting group number 0 or 1. Use # as a wildcard to select all setting groups. x = 1 for 151 or no entry for 51 p = element type P, N, or Q 4-16 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 69: Voltage Restraint/Control For Phase Time-Overcurrent Function
Connections. Table 4-9 shows which voltage measurements are used by each phase overcurrent element for each possible VTP connection and 51/27 voltage monitoring mode setting. Table 4-9. VTP Connection Cross Reference VTP Connection 51/27 Mode BE1-951 Protection and Control 4-17 Courtesy of NationalSwitchgear.com...
Page 70: Setting Voltage Restraint And Control For Phase Time Overcurrent Function
Appendix A, Time-Current Characteristics . When time current characteristic curve P is selected, the coefficients used in the equation are those defined by the user. Definitions for these equations are provided in Table 4-11. 4-18 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 71: Setting Programmable Curves
Reads or changes the user-programmable 51 curve parameters. Syntax: SP-CURVE[=<A coefficient>,<B coefficient>,<C coefficient>,<N coefficient>,<R coefficient>] Comments: See Table 4-12 for SP-Curve settings information. SP-CURVE Command Example Read the programmable 51 curve settings. 1. SP-CURVE 1,0,0,2,0 BE1-951 Protection and Control 4-19 Courtesy of NationalSwitchgear.com...
Page 72: 67 Directional Overcurrent Element
Due to minute errors in the sample rate and variations in the power system, the memory voltage becomes less accurate over time. Conservatively, the BE1-951 can maintain memory voltage accuracy to less than 5° error for approximately one second. This should be adequate, as close in faults are expected to trip in very short time intervals.
Page 73: S-67N Command
The directional algorithm requires the power line impedance parameters. These parameters are inputted into the BE1-951 using the SG-LINE command. Table 4-14. SG-LINE Command Settings...
Page 74: Negative Sequence Overcurrent Protection
Angle compensation is not required for current polarization since the polarizing quantity IG is inherently compensated. Internally, the BE1-951 also uses several constant limits to determine if the system levels are adequate to perform reliable directional tests and set directional bits. See Table 4-15 Table 4-15.
Page 75: Negative Sequence Coordination Settings
The multiplier is the ratio of phase current to negative sequence current for the fault type BE1-951 Protection and Control 4-23 Courtesy of NationalSwitchgear.com...
Page 76: Delta/Wye Transformer Application
46 curve should be set at a value below 0.50A. Continuous (I )2 ratings for generators are typically in the range of 3 to 15 percent of their full-load current rating. 4-24 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 77: Voltage Protection
VOLTAGE PROTECTION BE1-951 voltage protection includes elements for overexcitation, phase undervoltage, phase overvoltage, auxiliary over-voltage, and negative sequence Over voltage. 24 Volts per Hertz Overexcitation Protection Figure 4-13 illustrates the inputs and outputs of the Volts Per Hertz element. Element operation is described in the following paragraphs.
Page 78: Bestlogic Settings For The Volts Per Hertz Overexcitation Element
BLK logic Logic expression that disables the function when true SL-24 Command Purpose: Read or set logic for the Sync-Check element Syntax: SL-24[=<mode>,<BLK logic>] Comments: Refer to Table 4-17 for settings definitions 4-26 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 79: Operating Settings For The Volts Per Hertz Element
When this expression is TRUE, the element is disabled by Figure 4-15. 27 Element forcing the outputs to logic 0 and resetting the timer. This feature functions in a similar way to the torque control contact of an electromechanical relay. BE1-951 Protection and Control 4-27 Courtesy of NationalSwitchgear.com...
Page 80: Bestlogic Settings For Phase Undervoltage And Overvoltage Elements
Logic expression that disables function when TRUE. SL-27P and SL-59P Commands Purpose: Read or set logic for the phase undervoltage and overvoltage elements. Syntax: SL-27P or SL-59P[=<mode>,<BLK logic>] Comments: See Table 4-20 for SL-27 and SL-59 settings information. 4-28 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 81: Operating Settings For Undervoltage And Overvoltage Elements
1. Set the group 0 phase undervoltage setting at 80 volts and the time delay at zero. >S0-27P=80,0 2. Set the phase overvoltage pickup at 135 volts and the time delay at 3 seconds for all setting groups. >S#-59P=135,3s BE1-951 Protection and Control 4-29 Courtesy of NationalSwitchgear.com...
Page 82: 27X/59X/159X Auxiliary Under/Over Voltage Protection
Logic settings for the 27X/59X/159X function are made using the SL-27X (settings logic–undervoltage) command or the SL-59X and SL159X (settings logic–overvoltage) command. The settings of these commands determine whether the elements are enabled or disabled. The SL command also provides 4-30 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 83: Sl-59X/159X And Sl-27X Command
Table 4-24. Table 4-23. VTX Connection Settings Connection Mode Unit AB, BC, CA 1 or 3 AN, BN, CN 1 or 3 1 or 3 Don’t Care BE1-951 Protection and Control 4-31 Courtesy of NationalSwitchgear.com...
Page 84: S-59X/159X Command And S-27X Command
(47PU) becomes TRUE and the timer starts. If the voltage remains above the pickup threshold for the duration of the time delay setting, the trip output (47T) becomes TRUE. If the voltage decreases below the dropout ratio of 98 percent, the timer is reset to zero. 4-32 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 85: Bestlogic Settings For The Negative Sequence Overvoltage Element
HMI using screen 5.x.4.1, where x equals 1 for setting group 0, 2 for setting group 1, 3 for setting group 2, or 4 for setting group 3. Negative sequence overvoltage operating settings are summarized in Table 4-26. BE1-951 Protection and Control 4-33...
Page 86: S-47 Command
>S#-47=50,30 DIRECTIONAL POWER PROTECTION 32 Directional Power Figure 4-18 illustrates the inputs and outputs of the Directional Power element. The BE1-951 provides one such element: 32. Element operation is described in the following paragraphs. The Directional Overpower element has two outputs: PU (pickup) and T (trip).
Page 87: Bestlogic Settings For The Directional Overpower Element
0.01 cycle from the ASCII command interface. Time delays entered in cycles are converted to milliseconds or seconds. Increment precision after conversion is limited to that appropriate for each of those units of measure. BE1-951 Protection and Control 4-35...
Page 88: S-32 Command
Power system frequency is measured on the optional auxiliary voltage input as well. When the applied voltage is greater than 10 volts, the BE1-951 measures the Figure 4-19. Typical 81 Element frequency. The measured frequency is the average of two cycles of measurement.
Page 89: Sl-81/181/281/381 Command
The voltage inhibit setting unit of measure depends upon the VTP and VTX connection settings. For 4- wire orPN connections it is Sec VPN. For 3-wire or PP connections it is Sec. VPP. Underfrequency and overfrequency operating settings are summarized in Table 4-30. BE1-951 Protection and Control 4-37...
Page 90: S-81 Command
>S#-81INH=100 RECLOSING The BE1-951 reclosing function provides up to four reclosing attempts that can be initiated by a protective trip or by one of the contact sensing inputs. The recloser allows supervisory control and coordination of tripping and reclosing with other system devices. Any of the four recloser shots can be used to select a different setting group when the appropriate shot is reached in a reclosing sequence.
Page 91 More than the maximum number of programmed recloses are initiated before the recloser returns to the Reset state. The BLK/DTL input is TRUE. The Reclose Fail (79F) output is TRUE. The maximum reclose cycle time is executed. BE1-951 Protection and Control 4-39 Courtesy of NationalSwitchgear.com...
Page 92: Recloser Bestlogic Settings
Breaker status is monitored at contact input 2. (Breaker is closed when IN2 is de-energized.) Reclose Wait is disabled. Energizing contact input 3 will block reclosing and drive the recloser to Lockout. 4-40 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 93: Recloser Operating Settings
Read or set the 79 Sequence Controlled Block output. Syntax: S<g>-79SCB[=<step list>] Comments: g = 0 for setting group 0, 1 for setting group 1, 2 for setting group 2, or 3 for setting group 3 BE1-951 Protection and Control 4-41 Courtesy of NationalSwitchgear.com...
Page 94 (51PPU and 51NPU) are used for the zone sequence settings (SP-79ZONE = 50TPPU+50TNPU or SP79ZONE = 51PPU+51NPU). If the upstream relay (BE1-951) senses that fault current has been interrupted by a downstream device, the BE1-951 will increment the trip/reclose sequence by one operation. This occurs because the BE1-951...
Page 95: Sp-79Zone Command
Voltage magnitude between systems is less than setting (the voltage used by the relay for this feature is a voltage magnitude measurement, not a voltage phasor measurement). BE1-951 Protection and Control 4-43...
Page 96: Bestlogic Settings For The Sync-Check Element
The BE1-951 compares the VTP voltage magnitude and angle to the VTX voltage magnitude and angle to determine synchronism. Therefore, proper connection of the VT inputs is vital to the correct operation of the 25 function. The relay automatically compensates for phase angle differences associated with the phase and auxiliary VT connections, including single-phase VTP connections.
Page 97: Voltage Monitor (25Vm)
LV threshold for a live condition to be true. Similarly, all three phases must be below the Figure 4-26. 25VM Logic DV threshold for a dead condition to be true. BE1-951 Protection and Control 4-45 Courtesy of NationalSwitchgear.com...
Page 98: Voltage Transformer Fuse Loss Detection
Live Phase and Dead Aux VOLTAGE TRANSFORMER FUSE LOSS DETECTION BE1-951 relays have one 60FL element that can be used to detect fuse loss or loss of potential in a three-phase system. The 60FL element is illustrated in Figure 4-27. When the element logic becomes TRUE, the 60FL logic output becomes TRUE.
Page 99: 60Fl Element Blocking Settings
There is no user setting to enable or disabled this supervision. Current polarization is not effected by the 60FL since it does not rely on voltage sensing. Similarly, zero sequence voltage polarization can only be performed if 3P4W sensing is selected. The BE1-951 Protection and Control 4-47...
Page 100: Sp-60Fl Command
Functions, for information on changing the nominal voltage and current values using the SG-NOM command. GENERAL PURPOSE LOGIC TIMERS The BE1-951 has two versatile, general purpose timers. Six modes of M od e = operation enable the 62 and 162 elements to emulate virtually any 0 -disa ble type of timer.
Page 101: Mode 1, Pickup/Dropout Timer
In the example shown in Figure 4-34, RESET time T2 is set to half of the PICKUP time T1 setting. The initiate input expression becomes TRUE and the timer starts integrating toward pickup. Prior to timing out, BE1-951 Protection and Control 4-49 Courtesy of NationalSwitchgear.com...
Page 102: Mode 6, Latch
Initiate Logic Logic expression that initiates timing sequence. BLK Logic Logic expression that disables function when TRUE. BESTlogic settings for the 62/162 element can be made using the SL-x62 (settings logic-timer) command. 4-50 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 103: Sl-X62 Command
Set the 62 function of setting groups 1 to delay pickup for 150 milliseconds with a dropout of 50 milliseconds. >S0-62=100,0;S1-62=150,50 2. Take advantage of the wildcard character (#) to make the same setting with only two commands. >S#-62=150,50;S0-62=100,0 BE1-951 Protection and Control 4-51 Courtesy of NationalSwitchgear.com...
Page 104: Retrieving 62/162 Output Status Information From The Relay
Functions, General Status Reporting for more information. BREAKER FAILURE PROTECTION BE1-951 relays provide one function block for breaker failure protection. This function includes a timer and a current detector. Figure 4-36 shows the BF function block. The function block has two outputs BFPU (breaker failure pickup) and BFT (breaker failure trip).
Page 105: Bestlogic Settings For The Bf (Breaker Failure) Element
Output Functions, Current Measurement for more information on this setting. If the user is changing the nominal frequency setting from the default (60 Hz) and setting the time delays in cycles, the frequency setting should be entered and saved to EEPROM first by entering E; Y. BE1-951 Protection and Control 4-53...
Page 106: Sp-Bf Command
VIRTUAL SWITCHES 43 Virtual Selector Switches BE1-951 Generator Protection Systems have four virtual selector switches that can provide manual control, locally and remotely, without using physical switches and/or interposing relays. Each virtual switch can be set for one of three modes of operation to emulate virtually any type of binary (two position) switch. An example would be an application that requires a ground cutoff switch.
Page 107: Bestlogic Settings For X43 Virtual Selector Switches
Control is also possible through the ASCII command interface by using the select-before-operate commands CS-x43 (control select-virtual switch) and CO-x43 (operate select-virtual switch). A state change takes place immediately without having to execute an exit-save settings command. BE1-951 Protection and Control 4-55...
Page 108 Both local and remote control is possible. A virtual switch can be used instead of a physical switch to reduce costs with the added benefit that the 4-56 Protection and Control BE1-951 Courtesy of NationalSwitchgear.com...
Page 109 CO-101 control command will be accepted. The control selected and the operation selected must match exactly or the operate command will be blocked. If the operate command is blocked, and error message is output. BE1-951 Protection and Control 4-57...
Page 110 CO-101 command in a read-only mode. VIRTUAL LOCKOUT PROTECTION BE1-951 virtual lockout protection consists of two protection elements: 86 and 186. Each element has three available inputs that are BESTlogic programmable. The element can be enabled or disabled using the mode input.
Page 111 Comments: x= nothing for 86 and 1 for 186. SL-86 Command Example: 1. Enable the relay to trip when an overcurrent fault occurs and reset when virtual switch 143 is pressed. >SL-86=1,50TP+50TN+50TQ+51P+51N+51Q, 143 BE1-951 Protection and Control 4-59 Courtesy of NationalSwitchgear.com...
Page 112 Table 5-2. Metering Functions Summary ..........5-2 BE1-951 Metering Courtesy of NationalSwitchgear.com...
Page 113: Section 5 • Metering
10 to 75 Hz Voltage The BE1-951 meters A phase voltage, B phase voltage, C phase voltage, voltage across phases A and B, phases B and C, and phases A and C. Negative sequence voltage and three-phase zero sequence (residual) voltage is also metered. The VTP connection determines what it measures.
Page 114: Power Factor
One ampere nominal systems meter true power over a range of –1,500 watts to +1,500 watts. Table 5-2. Metering Functions Summary Metering Function Serial Command HMI Screen All metered values Current, all values Current, A-phase M-IA Current, B-phase M-IB Current, C-phase M-IC Current, Ground M-IG Current, Negative Sequence M-IQ Metering BE1-951 Courtesy of NationalSwitchgear.com...
Page 115: Metering Command Descriptions
M-VCA=206V; M-V2=0.30V; M-VX=0.40V M-V3X=1.25V M-3V0=0.30V M-IA=4.99A; M-IB=5.00A; M-IC=4.99A; M-IN=0.00A M-IQ=0.02A; M-IG=4.99A M-WATT3= 3.44KW; M-WATTA= 2.30KW; M-WATTB= 2.30KW; M-WATTC= 2.29KW M-VAR3= 2.45KVAR; M-VARA= 1.30KVAR; M-VARB= 1.30KVAR; M-VARC= 1.30KVAR M-S=1.78KVA M-PF=+1.00 LEAD M-FREQP=60Hz; M-FREQX=60Hz; M-FREQS= 600Hz M-SYNC= BE1-951 Metering Courtesy of NationalSwitchgear.com...
Page 116: M-I Command
1.78KVA M-V Command Purpose: Read metered voltage values. Syntax: M-V[<phase>] Comments: phase = A/B/C/AB/BC/CA/2/X/3X or no entry M-V Command Examples 1. Read all voltage values. >M-V M-VA=119V; M-VB=119V; V-VC=118V; M-VAB=206V M-VBC=205V; M-VCA=206V; M-V2=0.30V; M-VX=0.30V M-V3X=0.30V Metering BE1-951 Courtesy of NationalSwitchgear.com...
Page 117: M-Var Command
M-WATT[<phase>] Comments: phase = 3/A/B/C M-WATT Command Example Read the system watts. >M-WATTA 1.78KW M-SYNC Command Purpose: Read metered sync angle between Phase and Aux inputs Syntax : M-SYNC M-SYNC Command Example >M-SYNC 20.0 Deg BE1-951 Metering Courtesy of NationalSwitchgear.com...
Page 118 Retrieving Breaker Status and Operation Counter Information ......6-12 BE1-951 Reporting and Alarm Functions...
Page 119 Commands ..............6-35 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 120 Equation 6-1. Energy Data Equation ........... 6-6 BE1-951 Reporting and Alarm Functions Courtesy of NationalSwitchgear.com...
Page 121: Section 6 • Reporting And Alarm
SECTION 6 • REPORTING AND ALARM FUNCTIONS INTRODUCTION This section describes all available reports from the BE1-951 relay and how they are set and retrieved. All alarm functions are also described along with how major and minor alarms are programmed (or mapped). RELAY IDENTIFIER INFORMATION BE1-951 relays have two relay identification fields: Relay ID and Station ID.
Page 122: Setting The Clock Function
Report or set the clock’s date setting. Syntax: RG-DATE[=<M/D/Y>] or RG-DATE[=<D-M-Y>] Comments: d and m settings are based on SG-CLK setting. RG-DATE Command Example 1. Enter the date for December 31, 1999. >RG-DATE=12/31/99 or >RG-DATE=12-31-99 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 123: General Status Reporting
>RG-TIME=11:24P00 GENERAL STATUS REPORTING BE1-951 relays have extensive capabilities for reporting relay status. This is important for determining the health and status of the system for diagnostics and troubleshooting. Throughout this manual, reference is made to the RG-STAT (report general, status) report and the appropriate HMI screens for determining the status of various functions.
Page 124: Co-Group
Alarm status is also available through the communication ports. The SA-MIN command repors the Minor Alarm status, the SA-MAJ command reports the Major Alarm status, and the SA-LGC command reports the Logic Alarm status. Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 125 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 Table 7-1 cross-references each BESTlogic variable name with a brief description of the variable function. BE1-951 Reporting and Alarm Functions Courtesy of NationalSwitchgear.com...
Page 126: Energy Data
RG-TARG=NONE ENERGY DATA Energy information in the form of watt-hours and var-hours is measured and reported by the BE1-951. Both positive and negative values are reported in three-phase, primary units. Watt-hour and var-hour values are calculated per minute as shown in Equation 6-1.
Page 127: Re-Kvar Command
Peak Since Reset register values, these values can be read prior to switching the loads. Once the abnormal loading condition has passed, the registers can be reset to the original values. BE1-951 Reporting and Alarm Functions Courtesy of NationalSwitchgear.com...
Page 128: Setting Demand Reporting
1. Read all demand register data. >RD RD-TIA:0.00A 01:21 01/01/99; RD-TIB:0.00A 01:21 01/01/99 RD-TIC:0.00A 01:21 01/01/99; RD-TIN:0.00A 01:21 01/01/99 RD-TIQ:0.02A 00:07 01/01/99 RD-TVAR= 0.00KVAR 01:21 01/01/99, 0.00KVAR 00:00 01/01/99 RD-TWATT= 0.00KW 01:21 01/01/99, 0.00KW 00:00 01/01/99 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 129: Rd-Ti/Yi Command
Reads Today’s Peak (TVAR) or Yesterday’s Peak (YVAR) var Demand values. Syntax: RD-TVAR or RD-YVAR Comments: Two var demand values are returned. The first value is the peak positive demand; the second value is the peak negative demand. BE1-951 Reporting and Alarm Functions Courtesy of NationalSwitchgear.com...
Page 130: Rd-Pvar Command
If a threshold is exceeded, the alarm point is set. The Alarm Functions subsection provides more information about using the programmable alarms reporting function. Demand alarm thresholds for current are set using the SA-DI (setting alarm, demand current) command. Table 6-5 summarizes the demand alarm settings. 6-10 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 131: Sa-Di Command
Circuit breaker status is also used by the breaker trip circuit voltage and continuity monitor. The Trip Circuit Monitor subsection provides more details. BE1-951 Reporting and Alarm Functions 6-11...
Page 132: Setting The Breaker Status Reporting Function
If the counter exceeds 99999, the counter will wrap back to 0. RB-OPCNTR Command Examples 1. Read the number of breaker operations. >RB-OPCNTR 2. Synchronize the relay breaker operations counter with an external counter reading of 65 operations. >RB-OPCNTR=65 6-12 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 133: Rb Command
OR logic term (e.g., IN1 or VO7) which blocks the breaker monitoring logic when TRUE (1). BLKBKR is set to zero to disable blocking. When breaker monitoring is blocked (logic expression equals 1), breaker duty is not accumulated BE1-951 Reporting and Alarm Functions 6-13...
Page 134 (When SG-TRIGGER (PU) is TRUE) flashing Red TRIP LED (When SG-TRIGGER (Trip) is TRUE) solid Breaker interruption duty D2559-23.vsd 02-28-01 (When SG-TRIGGER (PU) is TRUE) Setting group change blocked Figure 6-1. Protective Fault Analysis 6-14 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 135 Setting group changes are blocked when the SG-TRIGGER pickup expression is TRUE to prevent protective functions from being reinitialized with new operating parameters while a fault is occurring. BE1-951 Reporting and Alarm Functions 6-15 Courtesy of NationalSwitchgear.com...
Page 136: Setting The Breaker Duty Monitoring Function
This time is reported as a line in the fault summary reports. See the Fault Reporting subsection for more information about the TRIP logic expression and Fault Summary Reports. 6-16 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 137: Breaker Alarms
Optional Load Profile Recording Load profile recording is an optional selection when the BE1-951 is ordered. This option ( 4000 Point Load Profile Demand Log or Y as the third character from the right in the style chart) uses a 4,000 point data array for data storage.
Page 138: Sg-Log Command
994KVAR 12:05 03/15/01 532A 532A 532A 1.66MW 976KVAR 12:04 03/15/01 520A 520A 520A 1.62MW 956KVAR 12:03 03/15/01 508A 508A 508A 1.58MW 932KVAR 12:02 03/15/01 494A 494A 494A 1.54MW 904KVAR 12:01 03/15/01 6-18 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 139: Trip Circuit Monitor
This may cause false tripping of the other devices and prevent the BE1-951 trip circuit monitor from reliably detecting an open circuit. Contact Basler Electric for advice on using this application.
Page 140: Fault Reporting
FAULT REPORTING The fault reporting function records and reports information about faults that have been detected by the relay. The BE1-951 provides many fault reporting features. These features include Fault Summary Reports, Sequence of Events Recorder Reports, Oscillographic Records, and Targets.
Page 141: Targets
150TP Enabled Neutral instantaneous OC with settable time delay 50TN Enabled Neutral instantaneous OC with settable time delay 150TN Enabled Neutral inverse time OC Enabled Neutral inverse time OC 151N Enabled BE1-951 Reporting and Alarm Functions 6-21 Courtesy of NationalSwitchgear.com...
Page 142: Setting The Targets Function
When a protective trip occurs and targets are logged, the HMI Figure 6-4. Target Reset Logic Trip LED seals-in and screen 1.2 is automatically displayed. 6-22 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 143: Rg-Targ Command
150AN Distance to Fault The BE1-951 calculates distance to fault each time a fault record is triggered. Refer to the fault record triggering logic command SG-TRIGGER for triggering details. Distance to fault is calculated and displayed based on the power line parameters entered with the SG-LINE command. This command describes the power line parameters for which distance is to be computed over.
Page 144: Fault Summary Reports
A computed value greater than maximum line length is reported as N/A. Fault Summary Reports The BE1-951 records information about faults and creates fault summary reports. A maximum of 16 fault summary reports are stored in the relay. The two most recent reports are stored in nonvolatile memory.
Page 145: Retrieving Fault Report Information From The Relay
SG-COM command, described in Section 11, ASCII Command Interface. Fault Number. This line reports the sequential number (from 1 to 255) assigned to the report by the BE1-951. Fault Trigger. This line reports the logic variables in the pickup or logic trigger expressions that became TRUE to trigger the recording of the event.
Page 146: Oscillographic Records
RF-<n/NEW>[=<0/TRIG>] Comments: n = fault record number (1 to 255) NEW = newest fault record since all records were last reset using RG=0 Fault Summary Report Example 1. >RF BE1-951 FAULT DIRECTORY REPORT DATE : 01/01/99 REPORT TIME : 01:12:25...
Page 147: Oscillographic Records Settings
ASCII format. These settings include the following. • BESTlogic settings for User Programmable Logic Scheme. • User Programmable Label settings, Global I/O settings. • The protection setting group active during the fault. BE1-951 Reporting and Alarm Functions 6-27 Courtesy of NationalSwitchgear.com...
Page 148: Sequence Of Events Recorder
ASCII format data is human readable and can be analyzed by standard text editing software. Bestwave software for IBM compatible computers is available from Basler Electric to convert binary files to ASCII format. Configuration and data files can be downloaded using any standard communications program. The download protocol may be XMODEM or XMODEM CRC format.
Page 149: Rs Command
Comments: n = number of events to be retrieved Fn = fault record number to be retrieved RS Command Examples 1. Read the directory report of records. >RS BE1-951 SEQUENCE OF EVENTS DIRECTORY REPORT DATE : 06/1/99 REPORT TIME : 08:28:47...
Page 150: Alarms Function
Any relay trouble alarm will disable the protection functions, light the Relay Trouble LED, and place the output contacts in their normal, de-energized state. If a relay trouble (RA-REL) alarm is cleared by pressing 6-30 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 151: Major, Minor, And Logic Programmable Alarms
VO14 logic is TRUE. (User programmable logic VO14 LOGIC ALRM alarm) VO15 LOGIC ALRM VO15 logic is TRE. (User programmable logic alarm) TRUE if fault event trigger lasts longer than 60 FLT RPT TIMEOUT ALARM seconds BE1-951 Reporting and Alarm Functions 6-31 Courtesy of NationalSwitchgear.com...
Page 152 SA-MAJ/MIN/LGC Command Example 1. Set the Major Alarm to trigger when the trip circuit voltage and continuity monitor asserts, when breaker failure occurs, or when virtual output 15 is TRUE. >SA-MAJ=1/2/23 6-32 Reporting and Alarm Functions BE1-951 Courtesy of NationalSwitchgear.com...
Page 153: Retrieving And Resetting Alarm Reports
Links Between Programmable Alarms and BESTLOGIC Several links between the programmable alarms and BESTlogic allow alarm functions to be used in the logic scheme and programmable logic functions to be used in the alarm reporting function. BE1-951 Reporting and Alarm Functions 6-33...
Page 154: Programmable Alarms Controlled By Bestlogic Elements
Comments: No password privileges are required to read status information. RG-VER Command Example 1. Obtain a hardware and software version report from the relay. >RG-VER Model Number : BE1-951 Style Number : E0N2H0 Program : VER 1.50.00 03/16/2000 Boot Program : VER 2.05 10/21/98...
Page 155 Table 7-2. Programmable Variable Name Setting ........7-10 BE1-951 BESTlogic Programmable Logic Courtesy of NationalSwitchgear.com...
Page 156: Section 7 • Bestlogic Programmable Logic
BESTlogic is a programming method used for managing the input, output, protection, control, monitoring, and reporting capabilities of Basler Electric’s digital, multifunction, protective relay systems. Each relay system has multiple, self-contained function blocks that have all of the inputs and outputs of its discrete component counterpart.
Page 157 Figure 7-1. BESTlogic Function Blocks BESTlogic Programmable Logic BE1-951 Courtesy of NationalSwitchgear.com...
Page 158 Figure 7-2. BESTlogic Function Blocks – Continued BE1-951 BESTlogic Programmable Logic Courtesy of NationalSwitchgear.com...
Page 159 150T Neutral Tripped Voltage Logic Variables 150TNPU 150T Neutral Picked Up 24 Volts Per Herts 50TQT 50T Negative Sequence Tripped 25 VM1 25VM1 Sync Check voltage Monitor 50TQPU 50T Negative Sequence Picked Up BESTlogic Programmable Logic BE1-951 Courtesy of NationalSwitchgear.com...
Page 160: Function Block Logic Settings
AND operations before performing OR operations. Logic expressions for virtual outputs are entered with the SL-VO (settings logic, virtual outputs) command. SL-VO Command Purpose: Programs a logical mode of operation for a virtual output. Syntax: SL-VO<x>[=<equation>] BE1-951 BESTlogic Programmable Logic Courtesy of NationalSwitchgear.com...
Page 161: Virtual And Hardware Outputs
A virtual output exists only as a logical state inside the relay. A hardware output is a physical relay contact that can be used for protection or control. Each BE1-951 relay has five isolated, normally open (NO) output contacts (OUT1 – OUT5) and one isolated, normally closed (NC) alarm output (OUTA). Output contacts OUT1 through OUT5 are controlled by the status of the internal virtual logic signals VO1 through VO5.
Page 162 Appendix D, Setting Terminal Communications gives instructions for configuring Windows® HyperTerminal and Terminal for use with the BE1-951. Any of the six preprogrammed logic schemes stored in relay memory can be copied to the active logic and customized or used as is.
Page 163: Custom Logic Schemes
SL-N Command Purpose: Reads or sets the active logic scheme name or copies a preprogrammed logic scheme to the active logic scheme. Syntax: SL-N[=<name>] BESTlogic Programmable Logic BE1-951 Courtesy of NationalSwitchgear.com...
Page 164: Creating Or Customizing A Logic Scheme
The active logic scheme can also be saved as a text file and modified off-line using any ASCII text editor. The text file can then be uploaded to the relay through terminal communications. Also, a Microsoft® Excel BE1-951 BESTlogic Programmable Logic...
Page 165: Debugging The Logic Scheme
“Settings Record” spreadsheet is available with the BE1-951 and contains all of the preprogrammed logic schemes. These schemes can be modified and saved as a text file and then uploaded to the relay’s active logic. See Appendix C, Relay Setting Record for more information.
Page 166 Virtual outputs can also be assigned user programmable labels (described previously). With this feature, a logic condition can be designed and used for an alarm. The virtual output label would then be reported in the alarm reporting function. BE1-951 BESTlogic Programmable Logic 7-11...
Page 167 BACKUP Logic Settings and Equations ......... 8-48 BE1-951 Application Courtesy of NationalSwitchgear.com...
Page 168 Table 8-11. OC-W-CTL Virtual Switches Logic ......... . . 8-18 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 169 Table 8-25. Miscellaneous Logic Expressions ......... . . 8-49 BE1-951 Application Courtesy of NationalSwitchgear.com...
Page 170: Section 8 • Application
SECTION 8 • APPLICATION INTRODUCTION This section discusses application of the BE1-951 Overcurrent Protection System using the preprogrammed logic schemes. The Details Of Preprogrammed Logic Schemes subsection describes the characteristics of each logic scheme and how they combine to create an overcurrent protection system for a radial system substation.
Page 171: Oc-W-79 Logic Scheme (Overcurrent Protection With Reclosing)
(50) overcurrent protection in this scheme. A function block is disabled by setting the pickup set-point at zero in each of the four setting groups. Virtual output VO11 is assigned for all protective trips. When VO11 becomes TRUE, OUT1 will operate and trip the breaker. Contact outputs OUT2, OUT3, OUT4, and OUT5 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 172: Operation - Setting Group Selection
Used for instantaneous negative sequence overcurrent 1 (enabled) protection. 150TP None 0 (disabled) 150TN None 0 (disabled) 150TQ None 0 (disabled) Used for timed phase-overcurrent protection. 1 (enabled) 1 (3-Phase Used for timed neutral-overcurrent protection. Residual) BE1-951 Application Courtesy of NationalSwitchgear.com...
Page 173 Alarm contact closes automatically Alarm Output Contact. ALARM ACTIVE NORMAL (OUTA) when relay trouble alarm occurs. BESTlogic Expression: VOA = 0 Contact closes when protective trip Breaker Trip Contact. BKR_TRIP TRIP NORMAL (OUT1) expression is TRUE. Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 174 Alarm Mask 21. VO13 TRUE FALSE BESTlogic Expression: VO13 = 0 VO14 Alarm Mask 22. VO14 TRUE FALSE BESTlogic Expression: VO14 = 0 VO15 Alarm Mask 23. VO15 TRUE FALSE BESTlogic Expression: VO15 = 0 BE1-951 Application Courtesy of NationalSwitchgear.com...
Page 175 VOA - ALARM ACTIVE OUTPUT OUTA SETTING LOGIC CO-OUTx GROUP CONTROL D2848-17 AUTO VO11 PROT TRIP VO1 - 52TC 07-14-99 OUTPUT OUT1 LOGIC CO-OUTx 50TPT PHASE 50TPPU VO2 - 50TPT (50TP) OUTPUT OUT2 LOGIC CO-OUTx 50TNT NEUTRAL OPTO 50TNPU (50TN) VO3 - 51PT OPTO OUTPUT...
Page 176: Basic-Oc Logic Settings And Equations
OUT1 TRIP OUT5 OUT3 50TP 50TN 50TQ OUT4 OUT2 D2849-02 BE1-951 07-14-99 Figure 8-2. BASIC-OC One-Line Drawing BASIC-OC Logic Settings and Equations SL-N=BASIC-OC SL-50TP=1,0; SL-50TN=1,0; SL-50TQ=1,0 SL-150TP=0,0; SL-150TN=0,0; SL-150TQ=0,0 SL-51P=1,0 SL-51N=1,0 SL-51Q=1,0 SL-151N=0,0 SL-27P=0,0 SL-59P=0,0; SL-59X=0,0 SL-47=0,0 SL-62=0,0,0 SL-162=0,0,0 SL-79=0,0,0,0,0...
Page 177: Oc-W-79 Logic Scheme
Setting the recloser Sequence Controlled Blocking output in the four setting groups is done by using the S#-79SCB commands. Recloser timing is stopped by the wait input if an overcurrent protection function block is picked up (VO12) Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 178: Operation - Setting Group Selection
50 and 51 protection is enabled. IN4 must be tied HIGH if this feature is not used. Table 8-6. OC-W-79 Function Block Logic BESTlogic Function Purpose Expression Mode Setting 50TP Block when recloser sequence controlled blocking 79SCB output is TRUE. (enabled) BE1-951 Application Courtesy of NationalSwitchgear.com...
Page 179 Input 2 Logic: No manual selection logic is used. (discrete input selection) Input 3 Logic: No manual selection logic is used. Auto/Manual Logic: Set to 1 (/0) to enable automatic selection. Manual selection is not used. 8-10 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 180 BESTlogic Expression: VO8 = VO11+IN3 Recloser Drive to Drive recloser to lockout if: IN2 is RCL_DTL NORMAL Lockout. energized or the high-set instantaneous elements trip. BESTlogic Expression: VO9 = /IN2+150TPT+150TNT+15OTQT VO10 Not used TRUE FALSE BE1-951 Application 8-11 Courtesy of NationalSwitchgear.com...
Page 181 FALSE BESTlogic Expression: VO13 = 0 VO14 Alarm Mask 22 Not used VO14 TRUE FALSE BESTlogic Expression: VO14 = 0 VO15 Alarm Mask 23 Not used VO15 TRUE FALSE BESTlogic Expression: VO15 = 0 8-12 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 182 IN1 52B OPTO IN2 DTL OPTO VO8 79RI 150TPT PHASE 79RNG IN3 RECLOSE INITIATE STATUS OPTO 79LO 150TPPU DTL/BLK (150TP) CLOSER WAIT 79SCB IN4 N & Q ENABLE D2848-19 OPTO VO9 DTL 04-08-99 150TNT HIGH SET NEUTRAL 150TNPU (150TN) CO-43 150TQT NEG SEQ VOA ALARM...
Page 183: Oc-W-79 Logic Settings And Equations (Overcurrent With Reclosing)
50TP 50TN 50TQ B L O C K D 2 8 4 9 - 0 8 07-15-99 150TP 150TN 150TQ BE1-951 Figure 8-4. OC-W-79 One-Line Drawing OC-W-79 Logic Settings and Equations (Overcurrent with Reclosing) SL-N:OC-W-79 SL-50TP:1,79SCB; SL-50TN:1,79SCB+/IN4; SL-50TQ:1,79SCB+/IN4 SL-150TP:1,0; SL-150TN:1,0;...
Page 184: Oc-W-Ctl Logic Scheme
Virtual switches that are not needed may simply go unused. The contact sensing inputs can be freed up for other uses by utilizing the virtual switches for other control functions. BE1-951 Application 8-15 Courtesy of NationalSwitchgear.com...
Page 185: Operation - Protection
Other alarms require a reset either by operating the front panel Reset pushbutton or by issuing ASCII commands through a communication port. More information about alarms is provided in Section 6, Reporting and Alarm Functions . 8-16 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 186 Block when disabled by IN4 or virtual switch 243 /IN4+243 1 (enabled) 151N Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) BE1-951 Application 8-17 Courtesy of NationalSwitchgear.com...
Page 187 Table 8-12. OC-W-CTL Virtual Output Logic State Labels Variable Output Purpose Output Description Label TRUE (1) FALSE (0) Alarm Output Contact Alarm contact closes automatically ALARM ACTIVE NORMAL (OUTA) when relay trouble alarm occurs. BESTlogic Expression: VOA = 0 8-18 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 188 NORMAL Expression element has picked up. BESTlogic Expression: VO12 = 50TPPU+50TNPU+50TQPU+150TPPU+150TNPU+150TQPU+51PPU+51NPU+51QPU VO13 Alarm Mask 21 Not used. VO13 TRUE FALSE BESTlogic Expression: VO13 = 0 VO14 Alarm Mask 22 Not used. VO14 TRUE FALSE BE1-951 Application 8-19 Courtesy of NationalSwitchgear.com...
Page 189 State Labels Variable TRUE (1) FALSE (0) Output Purpose Output Description Label BESTlogic Expression: VO14 = 0 VO15 Alarm Mask 23 Not used. VO15 TRUE FALSE BESTlogic Expression: VO15 = 0 8-20 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 190 IN1 52B OPTO IN2 DTL OPTO VO8 79RI 150TPT PHASE 79RNG IN3 RI RECLOSE INITIATE STATUS OPTO 79LO 150TPPU DTL/BLK (150TP) CLOSER WAIT 79SCB D2848-18 IN4 N & Q ENABLE OPTO VO9 DTL 04-08-99 150TNT NEUTRAL HIGH SET 150TNPU (150TN) 43 SET GRP AUTO CO-43 150TQT...
Page 191: Oc-W-Ctl Logic Settings And Equations
TRIP 50TP 50TN 50TQ OUT2 52CC B L O C K D2849-06 07-19-99 GROUP CONTROL 150TP 150TN 150TQ BE1-951 Figure 8-6. OC-W-CTL One-Line Diagram OC-W-CTL Logic Settings and Equations SL-N:OC-W-CTL SL-50TP:1,79SCB; SL-50TN:1,243+79SCB+/IN4; SL-50TQ:1,243+79SCB+/IN4 SL-150TP:1,0; SL-150TN:1,0; SL-150TQ:1,0 SL-51P:1,0 SL-51N:1,243+/IN4 SL-51Q:1,243+/IN4 SL-151N:0,0 SL-27P:0,0 SL-59P:0,0;...
Page 192: Fdr-W-Il Logic Scheme
When used with other programmable relays using BUS and BACKUP logic schemes, FDR-W-IL logic provides protection when the feeder relay is out of service. Basler Electric protective relays that incorporate a BUS and BACKUP logic scheme are the BE1-851 Overcurrent Protection System, the BE1-951 Overcurrent Protection System, and the BE1-CDS Current Differential System.
Page 193: Normal Operation - Protection
When any of the feeder relay overcurrent function blocks are picked up, OUT4 closes. The signal from OUT4 is intended for connection to IN2 of an upstream BE1-951 using BUS logic. When the upstream relay recognizes an external contact closure on IN2, the upstream relay will block its 50T elements that are set to trip the bus breaker or bus lockout relay (OUT3 of BUS relay).
Page 194: Normal Operation - Alarms
This feature provides backup mode signaling when the feeder relay is extracted from the case. Backup for relay failure can be implemented using the BUS and BACKUP preprogrammed logic schemes. These schemes are described in detail in the Bus and Backup Logic Schemes subsection. BE1-951 Application 8-25 Courtesy of NationalSwitchgear.com...
Page 195 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Breaker Status Logic: Closed breaker is indicated /IN1 when IN1 is de-energized. 8-26 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 196 Places the relay in Test mode so that breaker failure is disabled when virtual (on/off) TESTENABLE TSTMODE NORMAL switch is closed. Allows breaker to be tripped or closed manually from HMI or ASCII command (enabled) interface. BE1-951 Application 8-27 Courtesy of NationalSwitchgear.com...
Page 197 BESTlogic Expression: VO8 = VO11 Recloser Drive to Drive recloser to lockout if: IN2 is RCL_DTL NORMAL Lockout de-energized, virtual switch 143 is closed, the breaker fails, or the high-set instantaneous elements trip. BESTlogic Expression: VO9 = /IN2+143+VO5+150TPT+150TNT+150TQT 8-28 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 198 Indicates that the relay is in Test TEST_MODE TEST NORMAL mode and that the breaker failure is disabled. TRUE if IN4 is de- energized or if virtual switch 343 is closed. BESTlogic Expression: VO15 = /IN4+343 BE1-951 Application 8-29 Courtesy of NationalSwitchgear.com...
Page 199 IN1 52B Note: For clarity, multiple variables going to the same OR OPTO Gate are shown by a single line into the OR Gate. IN2 RCL ENABLE OPTO VO8 79RI 150TPT PHASE 79RNG IN3 N AND Q ENABLE STATUS OPTO 79LO 150TPPU VO9 79DTL...
Page 200: Fdr-W-Il Logic Settings And Equations
52CC D2849-05 07-19-99 150TP 150TN 150TQ OUT5 BF OUT GROUP CONTROL OUT3 TEST TEST MODE MODE OUT BE1-951 Figure 8-8. FDR-W-IL One-Line Drawing FDR-W-IL Logic Settings and Equations SL-N:FDR-W-IL SL-50TP:1,79SCB; SL-50TN:1,243+79SCB+/IN3; SL-50TQ:1,243+79SCB+/IN3 SL-150TP:1,0; SL-150TN:1,0; SL-150TQ:1,0 SL-51P:1,0 SL-51N:1,243+/IN3 SL-51Q:1,243+/IN3 SL-151N:0,0 SL-27P:0,0...
Page 201 The components of BACKUP logic are summarized in Tables 8-21, 8-22, 8-23, and 8-24. A diagram of BACKUP logic is shown in Figure 8-12. Figure 8-13 shows a one-line drawing for the BACKUP logic scheme. 8-32 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 202 BACKUP RELAY CIRCUIT IN2 BACKUP IN4 BACKUP RELAY FEEDER RELAY TEST BACKUP MODE MODE FEEDER BREAKER CIRCUIT FEEDER RELAY CIRCUIT OUT1 OUT3 IN4 FEEDER RELAY 52TC TEST MODE 94BUS BUS RELAY CIRCUIT OUT4 OUT4 OUT4 OUT4 OUT3 OUT5 OUT4 BACKUP TRIP TRIP TRIP...
Page 203: Normal Operation - Control
Section 6, Reporting and Alarm Functions. Contingency Operation - Test Mode The test mode is intended to increase the security of the protection and control system if external test switches are not installed on all outputs. 8-34 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 204: Contingency Operation - Backup Protection For Bus Breaker Failure
This allows the 94/BU relay to trip the feeder breaker when the feeder relay is out of service. When the BUS and BACKUP relays are in feeder relay backup mode, relay responses to the various faults BE1-951 Application 8-35...
Page 205 150TP Not used 0 (disabled) 150TN Not used 0 (disabled) 150TQ Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) Not used 0 (disabled) 8-36 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 206 Not used 0 (disabled) SWITCH_143 CLOSED OPEN Not used 0 (disabled) SWITCH_243 CLOSED OPEN Places the relay in Test mode and blocks BFI signal (VO3) to external 2 (off/on) TESTENABLE TSTMODE NORMAL Breaker Failure Relay. BE1-951 Application 8-37 Courtesy of NationalSwitchgear.com...
Page 207 TRIP NORMAL Expression. has picked up. BESTlogic Expression: VO11 = 50TPT+50TNT+50TQT+51PT+51NT+51QT Protection Picked Up TRUE when any 50 or 51 element VO12 PROT_PU NORMAL Expression. has picked up. BESTlogic Expression: VO12 = 50TPPU+50TNPU+50TQPU+51PPU +51NPU+51QPU 8-38 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 208 BESTlogic Expression: VO14 = 0 Blocks the BFI signal (VO3) to an external breaker failure relay. VO15 Test Mode. TEST_MODE TEST NORMAL TRUE when IN4 de-energizes or virtual switch 343 closes. BESTlogic Expression: VO15 = /IN4+343 BE1-951 Application 8-39 Courtesy of NationalSwitchgear.com...
Page 209 VOA ALARM OUTPUT OUTA LOGIC CO-OUTx VO1 52TC OUTPUT OUT1 LOGIC CO-OUTx 50TPT PHASE OPTO 50TPPU (50TP) IN2 BLOCK INST VO2 52CC OPTO OUTPUT 50TNT IN3 FEEDER BACKUP OUT2 NEUTRAL LOGIC OPTO CO-OUTx 50TNPU (50TN) IN4 TEST MODE OPTO VO3 EXTERNAL BFI SIGNAL 50TQT NEG SEQ OUTPUT...
Page 210: Bus Logic Settings And Equations
50TQ OUT5 OUT4 GROUP CONTROL BE1-951 D2849-03 Relay is shown in Normal mode (not in Test mode). 01-05-00 If the feeder relay is out of service, the 50T and 51 elements are diverted from OUT1 and OUT4 to OUT5 for feeder protection.
Page 211 Used for (enabled) backup bus fault trip. Requires 18-20 cycle coordination delay since no 50TN blocking is provided for feeder relay pickup. Used for (3-Phase backup bus fault trip. Residual) 8-42 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 212 Input 1 Logic: Not used GROUP Input 2 Logic: Not used Input 3 Logic: Not used Auto/Manual Logic: Auto/Manual switch fixed in Manual position. No automatic selection. Selection by contact sensing only. BE1-951 Application 8-43 Courtesy of NationalSwitchgear.com...
Page 213 Trip backup if breaker protection BKR_FAIL TRIP NORMAL (OUT5) times out. BESTlogic Expression: VO5 = BFT Not Used. TRUE FALSE BESTlogic Expression: VO6 = 0 Not Used. TRUE FALSE BESTlogic Expression: VO7 = 0 8-44 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 214 Indicates that the relay is in Test TEST_MODE TEST NORMAL mode and that breaker failure is disabled. TRUE if IN4 is de- energized or if virtual switch 343 is closed. BESTlogic Expression: VO15 = /IN4+343 BE1-951 Application 8-45 Courtesy of NationalSwitchgear.com...
Page 215 OPTO Note: For clarity, multiple variables going to the same OR IN2 FEEDER RELAY OUT OF SERVICE OPTO Gate are shown by a single line into the OR Gate. OPTO 50TPT PHASE D2848-15 OPTO 50TPPU 04-05-99 (50TP) VOA ALARM OUTPUT 50TNT NEUTRAL OUTA...
Page 216: Backup Logic Settings And Equations
OUT3 OUT OF SERVICE FEEDER OUT4 50TP 50TN 50TQ 150TP 150TN 150TQ TEST MODE OUT5 TRIP D2849-04 BE1-951 01-07-00 Figure 8-13. BACKUP One-Line Drawing BACKUP Logic Settings and Equations SL-N:BACKUP SL-50TP:1,0; SL-50TN:1,0; SL-50TQ:1,0 SL-150TP:1,0; SL-150TN:1,0; SL-150TQ:1,0 SL-51P:1,0 SL-51N:1,0 BE1-951 Application 8-47 Courtesy of NationalSwitchgear.com...
Page 217 These miscellaneous logic settings must be reviewed to ensure desired performance for these functions. 8-48 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 218 2 shows the expression for blocking the upstream instantaneous element. Figure 8-14 illustrates how the trip circuit continuity monitor can be used in breaker failure logic. Example 1. Breaker Failure Trip Expression: SL-VO5=BFT+VO10*OUT1MON*/VO15 Example 2. Block Upstream Instantaneous Expression: SL-VO4=VO12*/VO5*/OUT1MON*/VO15 BE1-951 Application 8-49 Courtesy of NationalSwitchgear.com...
Page 219 On occasion, an application will call for latching an output contact such as simulating a lockout (86) function. Each output contact of a Basler relay can be set to latch by using an AND gate to seal the trip condition and the TRSTKEY logic variable to reset the latch.
Page 220 SL-50TQ=0,0 SL-150TP=0,0; SL-150TN=0,0; SL-150TQ=0,0 SL-51P=1,0 SL-51N=1,0 SL-51Q=1,0 SL-151N=G,0 SL-27P=0,0 SL-59P=0,0; SL-59X=0,0 SL-47=0,0 SL-62=0,0,0 SL-162=0,0,0 SL-79=0,0,0,0,0 SL-81=0,0 SL-181=0,0 SL-281=0,0 SL-381=0,0 SL-481=0,0 SL-581=0,0 SL-BF=0,0,0 SL-GROUP=0,0,0,0,0,0 SL-43=0 SL-143=0 SL-243=0 SL-343=0 SL-101=0 SL-VOA=0 SL-VO1=0 SL-VO2=0 SL-VO3=VO14 SL-VO4=/VO14 SL-VO5=0 BE1-951 Application 8-51 Courtesy of NationalSwitchgear.com...
Page 221 Also, reliability increases as the user is no longer depending on a single relay to sense the under frequency condition. If the BE1-951 is not available on every circuit or user philosophy requires a bus level installation, the BE1-951 can also be applied for bus level under frequency protection.
Page 222 BE1-951 (single source sensing can also be used). These schemes are easily customized to meet the user’s specific requirements. Bus Level Application: The following logic was designed to work with the preprogrammed BUS Logic Scheme described in Section 8, Application.
Page 223 The VO14 latch circuit is high. With VO7, PROT_RES high and the above conditions met, closure of the SCADA Restore contact forces VO10, REST_PER high, breaking the VO13/VO14 seal and reseting output 1 and Output 3 contacts. If 8-54 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 224 Replace the ,0 with ,62 at the end of BUS SG-TARG The resulting BUS-UF setting logic is as follows: SL-50TP=1,IN2; SL-50TN=1,IN2; SL-50TQ=1,IN2 SL-150TP=0,0; SL-150TN=0,0; SL-150TQ=0,0 SL-51P=1,0 SL-51N=1,0 SL-51Q=1,0 SL-151N=0,0 SL-27P=0,0 SL-59P=0,0; SL-59X=0,0 SL-47=0,0 SL-62=2,/IN1,0 SL-162=0,0,0 SL-79=0,0,0,0,0 SL-81=1,0 SL-181=1,0 SL-281=1,VO7 SL-381=1,VO7 SL-481=0,0 BE1-951 Application 8-55 Courtesy of NationalSwitchgear.com...
Page 225 SL-VO3=/VO13 SL-VO6=81T*181T SL-VO7=281T*381T SL-VO8=VO6 SL-VO10=/VO6*IN1*IN3*VO7 SL-VO13=VO6+VO14 SL-VO14=/VO10*VO13 Add +81T+181T to BUS SG-TRIG Replace the ,0 with ,62 at the end of BUS SG-TARG The resulting OC-UF-79 setting logic is as follows: SL-50TP=1,79SCB; SL-50TN=1,79SCB+/IN4; SL-50TQ=1,79SCB+/IN4 8-56 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 226 (VOY) when an open breaker and open close circuit condition exists. The S<g>-62 command is used to provide a 500 millisecond time delay to inhibit the momentary alarm that will occur due to the timing differences between the two signals. BE1-951 Application 8-57...
Page 227 The neutral and negative sequence overcurrent elements provide greater sensitivity to unbalanced faults than the phase overcurrent elements because they can be set to pickup below balanced three-phase load. This can lead to a mis-operation during periods of load imbalance. The BE1-951 provides a neutral and 8-58...
Page 228 Setting Group Selection The BE1-951 Overcurrent Protection System provides multiple settings groups for adaptive relaying. The preprogrammed logic schemes barely tap the flexibility that is available. The following two examples illustrate how the settings groups can be adapted for different conditions and how different setting groups can be used to vary the system logic.
Page 229 The following example is based on the FDR-W-IL logic scheme. Example 1. Turn off the hold timer for output 1: SG-HOLD1=0 SG-HOLD2=0 Set the timer logic: SL-62=1,IN1,1,0 Set the pickup and dropout times: S#-62=2c,2c Set the output logic: VO1=101T+BFPU+VO11+VO6 VO2=101C+79C+VO7 VO6=VO1*/162 VO7=VO2*62 8-60 Application BE1-951 Courtesy of NationalSwitchgear.com...
Page 230 Table 9-1. Password Protection Settings ..........9-1 BE1-951 Security Courtesy of NationalSwitchgear.com...
Page 231 Each functional area can be assigned a unique password or one password can be assigned to multiple areas. A global password is used to access all three of the functional areas. BE1-951 passwords are not case sensitive; either lowercase or uppercase letters may be entered. Password security only limits write operations;...
Page 232 ACCESS GRANTED: SETTING AND REPORT. If ACCESS=ABC is entered at the rear RS-232 port (COM1), the relay responds with ACCESS GRANTED: SETTING. 4. Limit Control operations to the RS-485 port (COM2) but don’t require a password. >GS-PWC=0,2 Security BE1-951 Courtesy of NationalSwitchgear.com...
Page 233 Table 10-2. Virtual Control Switches HMI Screen Indicators ....... 10-11 BE1-951 Human-Machine Interface Courtesy of NationalSwitchgear.com...
Page 234 FRONT PANEL DISPLAY Figure 10-1 shows the HMI components of a BE1-951 in an H1 case. Call-outs following Figure 10-1 describe each HMI component. S1 style relays have the same HMI components with a different layout. Figure 10-1. Front Panel...
Page 235 The six branches of the menu tree are illustrated in Figure 10- 2 and summarized in the following paragraphs. Figure 10-2. Menu Tree Branches 10-2 Human-Machine Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 236 GENERAL SETTINGS. Provides display and setting of relay configuration settings such as communication, LCD contrast, transformer ratios, and system frequency. General Settings menu branch structure is illustrates in Figure 10-7. Figure 10-3. Report Status Menu Branch BE1-951 Human-Machine Interface 10-3 Courtesy of NationalSwitchgear.com...
Page 237 &21752/ D2848-21 04-13-99 $8; %.5 &21752/ 6(77,1* 287387 6:,7&+(6 *5283 &21752/ 6:,7&+ &21752/ 29(55,'( %.5 &2175/ 6(7 *5283 287 $ 75,3 ! &/26( /2*,& 29(55,'( / 29(55,'( ////// 6:,7&+B 6:,7&+B 6:,7&+B 6:,7&+B )$/6(...
Page 238 Figure 10-5. Metering Menu Branch Structure BE1-951 Human-Machine Interface 10-5 Courtesy of NationalSwitchgear.com...
Page 239 Figure 10-6. Reports Menu Branch Structure 10-6 Human-Machine Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 240 Courtesy of NationalSwitchgear.com D2848-25.CDR 02/23/01 Figure 10-7. Protection Menu Branch Structure BE1-951 Human-Machine Interface 10-7...
Page 241 Courtesy of NationalSwitchgear.com Figure 10-8. General Settings Menu Branch Structure Human-Machine Interface 10-8 BE1-951...
Page 242 HMI activity has occurred for five minutes, screen 1.2, TARGETS is displayed. SG-SCREEN Command Example Create a scrolling screen list that consists of three-phase current (screen 3.5) and breaker duty (screen 4.3.2). SG-SCREEN1=3.5 SG-SCREEN2=4.3.2 BE1-951 Human-Machine Interface 10-9 Courtesy of NationalSwitchgear.com...
Page 243 DISABLD. And, the FALSE (open) state label has been set to ENABLED. The logical mode for this application would be set to Mode 2 (On/Off switch). Figure 10-9. Virtual Control Switch 143 Screen 10-10 Human-Machine Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 244 1. Press the UP or DOWN scrolling pushbuttons until the proper first character of the password appears. Pressing UP scrolls through the alphabet and then the numbers in ascending order. Pressing DOWN BE1-951 Human-Machine Interface 10-11...
Page 245 As long as you continue to press the edit key for a function for which you have gained access, the five minute timer will be refreshed and you will not be prompted for a password. 10-12 Human-Machine Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 246 Commands ............. . . 11-21 BE1-951 ASCII Command Interface Courtesy of NationalSwitchgear.com...
Page 247: Section 11 • Ascii Command Interface
SERIAL PORT Communication connections consist of two Data Communication Equipment (DCE) RS-232 ports, one RS-485 port, and an IRIG port. BE1-951 communication protocol is compatible with readily available modem/terminal software. If required, password protection provides security against unauthorized operation. Detailed information about making communication connections is provided in Section 12, Installation .
Page 248: Ascii Command Interface
It isn’t necessary to remember all of the object names. Most commands don’t require that you specify a complete object name. If the first two letters of a command are entered, the relay will respond with all applicable object names. 11-2 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 249: Command Text File Operations
ASCII Command Examples 1. Obtain a breaker operations count by entering RB (Report Breaker). The BE1-951 responds with the operations counter value along with all other breaker report objects. If you know that the object name for the breaker operations counter is OPCNTR, you can enter RB-OPCNTR and read only the number of breaker operations.
Page 250 Three options, Y, N, or C, or available. Entering Y will save the data. If N is entered, the relay will clear the changes and resume operating with the old settings. Entering C will abort the EXIT command and allow programming to continue. 11-4 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 251 It can be used at the end of a programming session to make a record of the relay settings. If saved in a file, the report can be sent to another BE1-951 that will use the same settings. Because the report that is created is a set of commands, sending the report to a different relay re-programs that relay with the settings contained in the S report.
Page 252 SG-IN4= 4, 16 SG-HOLDA=0; SG-HOLD1=1; SG-HOLD2=1; SG-HOLD3=0 SG-HOLD4=0; SG-HOLD5=1 SG-SGCON= 5 SG-DIP=15; SG-DIN= 1; SG-DIQ= 1 SG-LOG=15 SG-TARG=24/27P/27X/47/BF/50TP/150TP/50TN/150TN/50TQ/150TQ/51P/51N/151N/51Q/ 59P/5 9X/81/181/281/381/481/581,0 SG-TRIGGER=BFT+VO11,BFPU+VO12,0 SG-OSC=16 SG-ID=BE1-951,SUBSTATION_1 SG-CLK=M,24,0 SG-SCREEN1=4.6; SG-SCREEN2=1.5.6; SG-SCREEN3=4.3.1; SG-SCREEN4=1.1 SG-SCREEN5=3.2; SG-SCREEN6=3.5; SG-SCREEN7=0; SG-SCREEN8=0 SG-SCREEN9=0; SG-SCREEN10=0; SG-SCREEN11=0; SG-SCREEN12=0 SG-SCREEN13=0; SG-SCREEN14=0; SG-SCREEN15=0; SG-SCREEN16=0 SG-COM0=9600,A0,P0,R1,X1;...
Page 253 2. Read all logic settings associated with the BACKUP logic scheme. >SL:BACKUP SL-N:BACKUP SL-50TP:1,0; SL-50TN:1,0; SL-50TQ:1,0 SL-150TP:1,0; SL-150TN:1,0; SL-150TQ:1,0 SL-51P:1,0 SL-51N:1,0 SL-51Q:1,0 SL-151N:0,0 SL-24:0,0 SL-25:0,0 SL-27P:0,0; SL-27X:0,0 SL-47:0,0 SL-59P:0,0; SL-59X:0,0 SL-81:0,0 SL-181:0,0 SL-281:0,0 SL-381:0,0 SL-481:0,0 SL-581:0,0 SL-62:0,0,0 BE1-951 ASCII Command Interface 11-7 Courtesy of NationalSwitchgear.com...
Page 254: Configuring The Serial Port Communication Protocol
NOTE: Polling is disabled on COM0 (Front RS-232), so an attempt to program an address other than A0 will cause an error message. The factory default settings are 9600,A0,P24,R1,X1 for COM0 and COM1 and 9600, A0,P0,R1,X0 for COM2. 11-8 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 255: Command Summary
Read metered current in primary unit. Syntax: M-I[<phase>] Reference: Section 5, Metering, Metering Command Descriptions M-PF Command Purpose: Read metered three-phase power factor. Syntax: M-PF Reference: Section 5, Metering, Metering Command Descriptions BE1-951 ASCII Command Interface 11-9 Courtesy of NationalSwitchgear.com...
Page 256: Report Commands
Report/Reset alarm information. Syntax: RA[=0] Reference: Section 6, Reporting and Alarm Functions, Alarm Function RA-LGC Command Purpose: Report/Reset logic alarm information. Syntax: RA-LGC[=0] Reference: Section 6, Reporting and Alarm Functions, Alarm Function 11-10 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 257 Read/Reset peak demand watts. Syntax: RD-PWATT[=0] Reference: Section 6, Reporting and Alarm Functions, Demand Functions RD-TI Command Purpose: Report today’s demand current. Syntax: RD-TI[<p>] Reference: Section 6, Reporting and Alarm Functions, Demand Functions BE1-951 ASCII Command Interface 11-11 Courtesy of NationalSwitchgear.com...
Page 258 Section 6, Reporting and Alarm Functions, Clock Section 6, Reporting and Alarm Functions, Fault Reporting RG-DATE Command Purpose: Read/Set date. Syntax: RG-DATE[=<M/D/Y>] or RG-DATE[=<D-M-Y>] Reference: Section 6, Reporting and Alarm Functions, Clock 11-12 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 259: Setting Command
Read/Set breaker alarm settings. Syntax: SA-BKR<n>[=<mode>,<alarm limit>] Reference: Section 6, Reporting and Alarms Function, Breaker Monitoring SA-DI Command Purpose: Read/Set demand alarm settings. Syntax: SA-DI<p>[=<alarm level>] Reference: Section 6, Reporting and Alarms Function, Demand Functions BE1-951 ASCII Command Interface 11-13 Courtesy of NationalSwitchgear.com...
Page 260: Breaker Monitoring And Setting Commands
SB-LOGIC[=<breaker close logic>] Reference: Section 6, Reporting and Alarms Function, Breaker Monitoring General Setting Commands SG Command Purpose: Read all general settings. Syntax: Reference: Section 11, ASCII Command Interface, Using ASCII Commands 11-14 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 261 Read/Set phase rotation setting. Syntax: SG-PHROT[=<phase rotation>] Reference: Section 3, Input and Output Functions, Voltage Inputs SG-SCREEN Command Purpose: Read/Set default screen(s). Syntax: SG-SCREEN<x>[=<default screen number>] Reference: Section 10, Human-Machine Interface, Front Panel Display BE1-951 ASCII Command Interface 11-15 Courtesy of NationalSwitchgear.com...
Page 262: Programmable Logic Setting Commands
Read/Set logic for 27 function modules. Syntax: SL-27[=<mode>,<BLK logic>]] Reference: Section 4, Protection and Control, Voltage Protection SL-32 Command Purpose: Read/Set Logic for 32 Function Modules Syntax : SL-32[=<mode>,<BLK logic>] Reference: Section 4, Protection and Control 11-16 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 263 SL-<x>86[=<mode>,<Trip logic>,<Reset Logic>] Reference: Section 4, Protection and Control SL-BF Command Purpose: Read/Set logic for breaker failure function modules. Syntax: SL-BF<x>[=<mode>,<INI logic>,<BLK logic>] Reference: Section 4, Protection and Control, Breaker Failure Protection BE1-951 ASCII Command Interface 11-17 Courtesy of NationalSwitchgear.com...
Page 264: User Programmable Name Setting Command
Read/Set 27 pickup level, time delay, and mode. Syntax: S<g>-27<x>[=<Pickup>,<Time Delay>] Reference: Section 4, Protection and Control, Voltage Protection S<g>-27R Command Purpose: Read/set (51)/27R control level and operating mode. Syntax: S<g>-27R[=<Pickup>,<Mode>] Reference: Section 4, Protection and Control, Voltage Protection 11-18 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 265 Read/Set 81 pickup level, time delay, and mode. Syntax: S<g>-<x>81[=<Pickup>,<Time Delay>,<Mode>] Reference: Section 4, Protection and Control, Frequency Protection S<g>-81INH Command Purpose: Read/Set 81 undervoltage inhibit level. Syntax: S<g>-81INH[=<Pickup>] Reference: Section 4, Protection and Control, Frequency Protection BE1-951 ASCII Command Interface 11-19 Courtesy of NationalSwitchgear.com...
Page 266 SP-79ZONE[=<zone pickup logic>] Reference: Section 4, Protection and Control, Reclosing Global Commands GS-PW Command Purpose: Read or change a password. Syntax: GS-PW<x>[=<password>,<com ports(0/1/2)>] Reference: Section 9, User Interface and Security Setup, User Interface 11-20 ASCII Command Interface BE1-951 Courtesy of NationalSwitchgear.com...
Page 267 Figure 12-2. BE1-951 S1 Case Cutout Dimensions ........
Page 268 Figure 12-34. Modem to BE1-951 ........... . 12-31 Figure 12-35. RFL9660 Protective Relay Switch to BE1-951 Cable ......12-31 Figure 12-37.
Page 269: Section 12 • Installation
Basler Electric Regional Sales Office, your Sales Representative, or a Sales Representative at Basler Electric, Highland, Illinois. If the BE1-951 is not installed immediately, store it in the original shipping package in a moisture and dust free environment.
Page 270 Figure 12-1. BE1-951 S1 Case Dimensions 12-2 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 271 5.69 (144.5) 2.84 (72.1) 8.25 (209.6) 8.63 (219.1) 4.13 4.31 (104.8) (109.5) .25 (6.35) DIA. 3.03 4 PLACES (77.0) 6.06 D1427-04 (154.0) 1-23-93 Figure 12-2. BE1-951 S1 Case Cutout Dimensions BE1-951 Installation 12-3 Courtesy of NationalSwitchgear.com...
Page 272 9 1085 51 021 D2863-17.VSD 09-24-00 2.438 .250 DIA. (4 PLC'S) 1.089 .904 .245 P.005 DIA., C'SINK 100D TO .386 DIA. (8 PLC'S) .375 Figure 12-3. S1 Adaptor Plate for S2 and FT-21 Cutouts 12-4 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 273 16.500 16.125 12.565 12.380 4.130 3.935 D 2 8 6 3 - 1 8 . V S D 01/17/01 .375 Figure 12-4. S1 Adaptor Plate for FT-32 Cutout BE1-951 Installation 12-5 Courtesy of NationalSwitchgear.com...
Page 274 Figure 12-5. BE1-951 H1 Case Dimensions 12-6 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 275 Figure 12-6. Adapter Bracket for Mounting a Single Relay n a 19 Inch Rack Figure 12-7. Adaptor Bracket for 19 Inch Rack Mount with ABB FT Cutout Switch BE1-951 Installation 12-7 Courtesy of NationalSwitchgear.com...
Page 276 100.914 4.458 113.233 9.475 240.665 9.505 241.427 D 2 5 5 9 - 2 5 . v s d 04-28-00 10.154 257.912 10.498 266.650 Figure 12-8. Single H1 Relay Escutcheon Plate and Cutout Dimensions 12-8 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 277 Figure 12-9. Single H1 Relay Mounting Dimensions for Panel Mounting Without an Escutcheon Plate BE1-951 Installation 12-9 Courtesy of NationalSwitchgear.com...
Page 278 0.344 8.738 12.319 0.485 18.517 0.729 25.222 0.993 25.984 1.023 94.717 3.729 100.914 3.973 4.458 113.233 456.616 17.977 457.378 18.007 473.862 18.656 482.60 19.000 Figure 12-10. Dovetailed H1 Relay Escutcheon Plate and Cutout Dimensions 12-10 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 279 Figure 12-11. Mounting Dimensions for Panel Mounting Two H1 Relays Without an Escutcheon Plate BE1-951 Installation 12-11 Courtesy of NationalSwitchgear.com...
Page 280: Dovetailing Procedure
Step 6b. Align the rear panel with the case and install the four Phillips screws that hold the rear Basler H1 cases can be interlocked by means of panel in place. Position Terminal Strip A in its a tenon and mortise on the left and right sides of panel opening and replace the two Torx®...
Page 281: Relay Connections
Incorrect wiring may result in damage to the relay. Figure 12-13 shows the terminal connections located on the rear-panel of an S1 style case. Figure 12-14 shows the rear-panel connections for an H1 style case. Figure 12-13. S1 Case Rear-Panel Terminal Connections BE1-951 Installation 12-13 Courtesy of NationalSwitchgear.com...
Page 282: Typical Dc And Ac Connections
Figure 12-14. H1 Case Rear-Panel Terminal Connections Typical DC and AC Connections Typical external DC and AC connections for the BE1-951 are shown in Figures 12-15 and 12-16. NOTE The relay should be hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the rear ground terminal of the relay case.
Page 283 Figure 12-16. Typical AC Connections BE1-951 Installation 12-15 Courtesy of NationalSwitchgear.com...
Page 284: Terminal Blocks
Except as noted, connections to the relay should be made with a minimum wire size of #14 AWG. CT Polarity CT polarity is critical to the proper operation of the BE1-951. Sidebar 12-1 provides fundamental information on CT polarity and protective relays. Sidebar 12-1 Current Circuit Polarity Figure 12-18.
Page 285 (8.6 mm). The maximum wire lug width accommodated by the input-output block on the H1 and S1 case is 0.320 inches (8.1 mm). Current and potential inputs on the S1 case are not limited by the barrier board terminal block design. Figure 12-20. Three-Phase Voltage Sensing, Alternate VTP Input BE1-951 Installation 12-17 Courtesy of NationalSwitchgear.com...
Page 286: Power System Applications
POWER SYSTEM APPLICATIONS Figures 12-20 through 12-29 are examples of the applications that can be served by the Basler BE1-951 directional overcurrent numeric relay system. Many of these applications can be used in concert with other Basler numeric systems such as the BE1-851 Utility Multifunction Relay, the BE1-CDS Current Differential Protection System, or the BE1-GPS Generator Protection System.
Page 287 Optional Independent Ground Input (IG) connected to detect low side ground faults Figure 12-22. OC Protection of a Delta-Wye Grounded Transformer (Radial Load) with Optional Independent Ground Input (IG) Connected for Low Side Ground Fault Protection BE1-951 Installation 12-19 Courtesy of NationalSwitchgear.com...
Page 288 Figure 12-23. Backup OC Protection of a Three-Winding Transformer with Optional Independent Ground Input (IG) Connected for Tertiary and System Ground Fault Protection 12-20 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 289 4. Optional Independent Ground Input (IG) supplied by a core balance CT, provides sensitive ground fault protection Figure 12-24. OC Protection of an Industrial Feeder (Radial Load) with Optional Independent Ground (IG) Connected to Core Balance CT for Sensitive Ground Fault Protection BE1-951 Installation 12-21 Courtesy of NationalSwitchgear.com...
Page 290 VTP and VTX. Voltage magnitude between VTX and VTP must be matched external to the relay. Figure 12-25. Directional OC Protection with Reclosing of a Transmission Line (Zero Sequence Current Polarizing Source from Delta-Wye Transformer Connected to IG) 12-22 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 291 7. When tertiary is loaded, use 3 CT's inside Delta (3Io); When tertiary is unloaded, only 1 CT (Io) is required Figure 12-26. Directional OC Protection with Reclosing of a Transmission Line (Zero Sequence Current Polarizing Source from Delta Tertiary Connected to IG) BE1-951 Installation 12-23 Courtesy of NationalSwitchgear.com...
Page 292 VTP and VTX. Voltage magnitude between VTX and VTP must be matched external to the relay. Figure 12-27. Directional OC Protection with Reclosing of a Transmission Line (Potential Polarized) 12-24 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 293 4. CT non-polarity connected to relay polarity, power flow from Generator to Bus defined as power out and ="+" watts; OC elements set for reverse tripping Figure 12-28. Directional OC Protection of a Small Generator (Potential Polarized) BE1-951 Installation 12-25...
Page 294 6. BE1-851 or 951 required on each circuit to implement high speed bus interlocking scheme Figure 12-29. Dual Voltage Source UF Load Shed Using Optional VTX Input; OC Bus Protection (Including High Speed Bus Interlocking) 12-26 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 295 5. VTX is set for "GR" and connected to the external 3Vo source for detecting ground faults on the delta side of the Transformer Figure 12-30. 51V Generator, Leads, and Transformer Low Side, Backup Protection; Delta Ground Fault Detection Using Externally Derived 3Eo Connected to VTX Input BE1-951 Installation 12-27 Courtesy of NationalSwitchgear.com...
Page 296 6. VX connected to external source of 3E polarizing voltage Figure 12-31. Directional Ground OC Protection Using External Source of Zero Sequence Polarizing Voltage (VX) Compared to Ground Current (IG) Up the Neutral of a Delta-Wye Grounded Transformer. 12-28 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 297 = “+” watts; OC elements set for forward trip 5. VX connected to external source of 3E polarizing voltage. Figure 12-32. Directional Ground OC Protection Using External Source of Zero Sequence Polarizing Voltage (VX) Compared to Calculated Residual (3IO) (IN) BE1-951 Installation 12-29 Courtesy of NationalSwitchgear.com...
Page 298: Settings
PREPARING THE RELAY FOR SERVICE Basler microprocessor-based protection systems are similar in nature to a panel of electromechanical or solid-state component relays. Both must be wired together with inputs and outputs, and have operating settings applied. Logic settings determine which protection elements are electronically wired to the inputs and outputs of the device.
Page 299 Figure 12-34. Modem to BE1-951 TO BE1-951 RFL 9660 REAR PORT MALE DB-9, DCE N.C. MATING CONNECTOR N.C. SGND N.C. N.C. N.C. N.C. D2881-22.vsd 11-16-00 Figure 12-35. RFL9660 Protective Relay Switch to BE1-951 Cable BE1-951 Installation 12-31 Courtesy of NationalSwitchgear.com...
Page 300 Figure 12-36. SEL 2020 to BE1-951 Relay RS-485 connections are made at a three-position terminal block connector that mates with a standard communication cable. A twisted pair cable is recommended. Connector pin numbers, functions, names, and signal directions are shown in Table 12-2. An RS-485 connection diagram is provided in Figure 12-34.
Page 301: Ascii Command Communication
138 - 200 V Each BE1-951 is delivered with the contact sensing jumpers installed for operation in the higher end of the control voltage range. If the contact sensing inputs are to be operated at the lower end of the control voltage range, the jumpers must be installed on pins 2 and 3.
Page 302 When all jumpers are positioned for operation in the desired control voltage range, prepare to place the drawout assembly back into the case. Align the drawout assembly with the case guides and slide the assembly into the case. Tighten the screws. Figure 12-38. Contact Sensing Jumper locations 12-34 Installation BE1-951 Courtesy of NationalSwitchgear.com...
Page 303 To Replace Battery in S1 Case ..........13-16 BE1-951 Testing and Maintenance Courtesy of NationalSwitchgear.com...
Page 304 Mode 5 - Integrating ........... . . 13-60 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 305 Figure 13-1. Rear Panel Terminal Connections (H1 Case) ....... . . 13-4 Figure 13-2. BE1-951 Rear Panel Terminal Connections (S1 Case) ......13-4 Figure 13-3.
Page 306 Table 13-96. 62 Mode 5 Test Commands ..........13-60 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 307 Table 13-106. Binary Group Control Selection Setup ........13-67 Table 13-107. Binary Group Control Select and Operate Commands ..... . . 13-68 BE1-951 Testing and Maintenance...
Page 308: Section 13 • Testing And Maintenance
Basler Electric performs detailed acceptance testing on all devices to verify all functions meet published specifications. All products are packaged and shipped with the strictest of standards. The BE1-951 relay is a microprocessor-based relay whose operating characteristics will not change over time. The relay will also not experience any change in operating characteristics during transit.
Page 309: Periodic Testing
TESTING AND TROUBLESHOOTING AIDS Under test or in-service, the BE1-951 provides several ways to check operations, targets, or events. A continuous self-test monitors the system health and status. The most basic reporting function is targets. Targets may be viewed through ASCII command interface or through the front panel HMI. Fault Summary Reports, Sequence of Events Recorder (SER) Reports, and Oscillographic Records yield more detail.
Page 310: Status Reporting Features
Performing these steps tests each function of the BE1-951 relay to validate that the relay was manufactured properly and that no degradation of performance occurred as a result of shipping.
Page 311 Figure 13-1. Rear Panel Terminal Connections (H1 Case) Figure 13-2. BE1-951 Rear Panel Terminal Connections (S1 Case) 13-4 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 312: Power Up
Purpose: To verify that the BE1-951 relay communicates through all ports. Reference Commands: ACCESS, EXIT To communicate with the BE1-951 through any of the three ports, use a terminal immulation program such as Hyperterminal or VT-100 terminal running on a personal computer (PC) with a serial port that is suitable for communications.
Page 313: Style Number And Serial Number Verification
Connect the RS-485 output of the converter box to the relay RS-485 terminals and repeat steps 1, 2 and 3. Style Number And Serial Number Verification Purpose: To verify that the BE1-951 relay model number, style number, and current software program version matches the unit and unit labels. Reference Commands: R.-VER Step 1 Through any communications port, transmit the command RG-VER.
Page 314: Current Circuit Verification
M command to the relay. Readings should be: M-VB=100 volts, M-VAB=100 volts, M-VBC=100 volts, M-3V0=100 volts, and M-V2=33.4 volts (applied divided by 3), all at + 1.0%. HMI Screens 3.1, 3.2, and 3.4 can also be monitored to verify voltage measurements. BE1-951 Testing and Maintenance 13-7...
Page 315: Power Reading Verification
Also note that the power factor angle is near 0 with a positive sign indicating a leading power factor angle. Step 6 Repeat Step 2 and 4 for current values of 10 and 20 amps. Corresponding power reading should be 3 kw/kvar and 6 kw /kvar + 1.0%. 13-8 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 316: Auxiliary Voltage Input Verification-Vx And Vx 3Rd (Fundamental And Third Harmonic)
BE1-951 Testing and Maintenance 13-9...
Page 317: Digital I/O Connection Verification
Also, please be aware that because of the multi-function nature of the BE1-951 relay, it may on occasion be necessary to temporarily disable some of the protective elements while testing the relay to facilitate isolated testing of individual functions.
Page 318: Virtual Selector Switches (If Not Used, Skip To Virtual Control Switch)
All connected or monitored inputs and outputs, and polarity and phase rotation of ac connections should be tested. Verify that: BE1-951 Testing and Maintenance 13-11...
Page 319: Verify Other Set Points As Appropriate
Fault records. Refer to Section 6, Reporting and Alarm Functions for more detail. Please be aware that because of the multi-function nature of the BE1-951 relay, it may be necessary to disable protection elements or change setting logic to verify a specific function. To guard against placing the relay in service with unwanted operational or logic settings, it is good practice to save a copy of the original setting file before the testing process begins.
Page 320: Energy Data And Demand
RS-NEW [= 0] command two times. Verify that new records is "0" by transmitting the RS command. Refer to Section 6, Sequence of Events Recorder Function , for setting details. BE1-951 Testing and Maintenance 13-13 Courtesy of NationalSwitchgear.com...
Page 321: Just Prior To Energizing--Report Documentation
Save this record along with the RG-STAT record mentioned earlier for future reference. PERIODIC TESTING Because the BE1-951 has extensive internal test capabilities, periodic testing of the protection system can be greatly reduced. Relay operating characteristics are a function of programming instructions that do not drift over time.
Page 322: Analog Circuit Verification
(capacitor backup). The backup battery should be replaced after five years of operation. The recommended battery is a lithium 3.6V, 0.95Ah battery (Basler PN: 9 3187 00 012) (Applied Power PN: BM551902). Use the following instructions to replace the battery: To Replace Battery in H1 Case Step 1 Remove the unit from the case.
Page 323: Care And Handling
BE1-951 contains no internal jumpers or mechanical settings and requires no circuit-board level calibration. The BE1-951 can be fully drawn out of the case. When the drawout assembly is removed, the current transformer input circuits are automatically shorted by the case. The case contains no components that are likely to require service;...
Page 324: Instantaneous Overcurrent (50T)
These tests are also suitable for assisting in systematic troubleshooting in the event that an operation is questioned. Revisiting the test of a specific function can help verify whether the relay is operating within specified tolerances. For further assistance, contact Basler Electric, Technical Support Services Department.
Page 325 Enables OUT1 to close for 150TP trip SL-VO2=150TNT Enables OUT2 to close for 150TN trip SG-TRIGGER=150TPT+150TNT, Enable 150TPT or 150TNT to log and trigger fault 150TPPU+150TNPU,0 recording EXITY;Y Exit and save settings 13-18 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 326: 50/150Tp And Tn (Calculated 3Io) Time Delay Verification
Step 6 (Optional) Repeat Steps 3 through 5 for phase B (terminals D3 and D4), phase C (terminals D5 and D6). Step 7 (Optional) Repeat Steps 1 through 6 for the 150T elements. Overwrite the 50T commands entered in Step 2 with the commands of Table 13-12. BE1-951 Testing and Maintenance 13-19 Courtesy of NationalSwitchgear.com...
Page 327: 50/150Tq Pickup And Dropout Verification
Sets CT ratio at 1 SG-TRIGGER=50TQT,50TQPU,0 Enable 50TQT to log and trigger fault recording EXITY;Y Exit and save settings Step 3 Using Table 13-14, transmit the first row of setting commands for your sensing input type. 13-20 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 328 Replace These Commands With These Commands SL-50TQ=1,0 SL-150TQ=1,0 SL-VO1=50TQT SL-VO1=150TQT SG-TRIG=50TQT,50TQPU,0 SG-TRIG=150TQT,150TQPU,0 Step 9 (Optional) Repeat Steps 1 through 8 for the 50TQ and 150TQ elements in setting groups 1, 2, and BE1-951 Testing and Maintenance 13-21 Courtesy of NationalSwitchgear.com...
Page 329 50/150TN (Independent Ground Input IG) Pickup and Dropout Verification Purpose: To verify the operation of the 50TN and 150TN elements for IG input. Reference Commands: SL-50TN/150TN Step 1 Connect a current source to terminals D7 and D8 (IG). 13-22 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 330 Step 4 Slowly increase the IG current until OUT1 closes. Verify that pickup occurs within the specified accuracy listed in Table 13-21. Slowly decrease the applied current until OUT1 opens. Dropout should occur at 93 to 97 percent of pickup. BE1-951 Testing and Maintenance 13-23...
Page 331: 50/150Tn (Independent Ground Input Ig) Time Delay Verification
Purpose Gain write access SL-N=NONE Zero out custom settings. Overwrite with logic=none settings. Confirm overwrite SL-N=PU51 Sets PU51 as custom logic name SL-51P=1,0 Enables 51P, disables blocking SL-51N=1,0 Enables 51N, disables blocking 13-24 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 332 8.007 seconds 0.50 A 1.798 seconds 1.988 seconds 2.5 A 0.944 seconds 1.044 seconds 0.15 A 14.318 seconds 15.825 seconds 0.50 A 3.535 seconds 3.907 seconds 2.5 A 1.844 seconds 2.038 seconds BE1-951 Testing and Maintenance 13-25 Courtesy of NationalSwitchgear.com...
Page 333: Pickup And Dropout Verification
Enables OUT3 to close for 51QT trip SG-CT=1 Sets P, N CT ratio at 1:1 SG-TRIGGER=51PT+51NT+5 Enable 51PT or 51NT or 51QT to log and trigger fault recording 1QT,51PPU+51NPU+51QPU,0 EXIT;Y Exit and save settings 13-26 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 334 D6). To test independent ground input IG, gain access and transmit SL-51N=G,0 exit and save. Apply test current to terminals D7 and D8, while monitoring OUT2 and repeat Step 4. Verify 51G target ons the HMI. BE1-951 Testing and Maintenance 13-27...
Page 335: Voltage Restraint/Control Time Overcurrent Protection
Enables OUT1 to close for 51PT trip SG-CT=1 Sets P, N CT ratio at 1:1 EXIT;Y Exit and save settings Step 2 Using Table 13-32 as a guide, transmit the 51/27R setting commands to the relay. 13-28 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 336: 51/27R-Voltage "Restraint" Pickup And Dropout Verification
Purpose: To verify the operating accuracy of the 67 Directional Overcurrent function. Reference Commands: SG-LINE, SL-50/51, S0-67, R.-STAT Step 1 To prepare the 50TP,N, and Q elements for directional testing, transmit the commands in Table 13-34 to the relay. Reset Targets. BE1-951 Testing and Maintenance 13-29 Courtesy of NationalSwitchgear.com...
Page 337: Positive Sequence Voltage Polarizing, Phase Overcurrent Elements
OUT1 closes. Decrease A-phase current until OUT1 just drops out. Pickup will occur within +2 percent of the 50TP pickup setting. Dropout will occur at 93 to 97% of actual pickup. Verify 67A target on the HMI. 13-30 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 338 Step 13 (Optional) Repeat steps 3 through 12 for B-phase current (D3 and D4) and C-phase current (D5 and D6). Reduce the corresponding B-phase and C-phase voltage for negative sequence tests. BE1-951 Testing and Maintenance 13-31...
Page 339: Negative Sequence Voltage Polarizing, Ground Overcurrent Elements
OUT2 closes. Decrease A-phase current until OUT2 just drops out. Pickup will occur within +2 percent of the 50TN pickup setting. Dropout will occur at 93 to 97% of actual pickup. Verify the 67N target on the HMI. 13-32 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 340: Zero Sequence Current Polarizing, Ground Over Current Elements
Verify that OUT2 opens at approximately 90 degrees I lag E and 270 degrees I lag E. OUT2 should remain closed from 90 through 180 to 270 degrees I lag E (defined as reverse trip direction) BE1-951 Testing and Maintenance 13-33...
Page 341: Forward Tripping Direction
I lag E and verify that OUT1 opens. This verifies that the 32 function is operating in the forward trip direction and not in the reverse direction. Step 5 Repeat steps 4 and 5 for the middle and upper settings in Table 13-41. 13-34 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 342: Reverse Tripping Direction
Enables Major Alarm Light for 24 alarm SL-24=1,0 Enables 24, disables blocking SL-VO1=24T Enables OUT1 to close for 24 trip SG-TRIG=24T, 24PU, 0 Enables 24 to log and trigger fault recording. EXITY;Y Exit and save settings BE1-951 Testing and Maintenance 13-35 Courtesy of NationalSwitchgear.com...
Page 343: Over Excitation, Volts/Hertz Trip Time Verification
Table 13-46. 24 Trip Times Multiple of V/H Pickup Time Dial 0.5 Time Dial 2.0 Time Dial 4.0 3.13 seconds 12.50 seconds 25.00 seconds 1.34 seconds 5.55 seconds 11.11 seconds 0.78 seconds 3.13 seconds 6.25 seconds 13-36 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 344: Over Excitation, Volts/Hertz Reset Time Verification
Step 1 Prepare the 27P and 59P pickup functions for testing by transmitting the commands in Table 13-49 to the relay. Reset Targets. Table 13-49. 27P and 59P Pickup Test Commands Command Purpose Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. Confirm overwrite BE1-951 Testing and Maintenance 13-37 Courtesy of NationalSwitchgear.com...
Page 345: Phase Undervoltage And Overvoltage Timing Verification
Step 9 (Optional) Repeat Steps 2 through 8 for setting groups 1, 2, and 3. Phase Undervoltage and Overvoltage Timing Verification Step 1 Using Table 13-51 as a guide, transmit the first row of setting commands to the relay. 13-38 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 346: Negative Sequence Voltage Pickup Verification
SG-TRIG = 47T,47PU, Enables 47 to log and trigger fault recording. EXITY;Y Exit and save settings Step 2 Using Table 13-53 as a guide, transmit the first row of setting commands to the relay. BE1-951 Testing and Maintenance 13-39 Courtesy of NationalSwitchgear.com...
Page 347: Negative Sequence Voltage Timing Verification
Step 1 Prepare the 27X and 59X/159X pickup function for testing by transmitting the commands in Table 13-55 to the relay. Reset targets. Table 13-55. 27X and 59X/159X Pickup Test Commands Command Purpose Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. 13-40 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 348: Auxiliary Undervoltage And Over Voltage Timing Verification (3E0 Vt Input)
Step 9 (Optional) Repeat Steps 2 through 8 for setting groups 1, 2, and 3. Auxiliary Undervoltage and Over voltage Timing Verification (3E0 VT Input) Step 1 Using Table 13-57 as a guide, transmit the first row of setting commands to the relay. BE1-951 Testing and Maintenance 13-41...
Page 349: Auxiliary Undervoltage And Overvoltage Pickup Verification (Fundamental Vx Input)
/159XPU EXITY;Y Exit and save settings Step 2 Using Table 13-59 as a guide, transmit the first row of setting commands (highest 27X PU, lowest 59XPU/159XPU) to the relay. 13-42 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 350: Auxiliary Undervoltage And Overvoltage Timing Verification (Fundamental Vx Input)
Timing accuracy is +5 percent or +3 cycles of the time delay setting. Step 6 Repeat Steps 5 and 6 for the middle and upper time delay settings of Table 13-57. Step 7 (Optional) Repeat Steps 2 through 6 for setting groups 1, 2, and 3. BE1-951 Testing and Maintenance 13-43...
Page 351: Auxiliary Undervoltage And Overvoltage Pickup Verification (3Rd Harmonic Vx Input)
Step 6 Continue to increase voltage until OUT1 closes. Pickup should occur within +2 percent or 1 volt of the pickup setting. Slowly reduce the voltage until OUT1 opens. Dropout should occur between 97 and 98 percent of the actual pickup value. 13-44 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 352: Auxiliary Undervoltage And Overvoltage Timing Verification (3Rd Harmonic Vx Input)
Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. Confirm overwrite SL-N=FREQTEST Sets FREQTEST as custom logic name SL-81=1,0 Enables 81, disables blocking SL-181=1,0 Enables 181, disables blocking BE1-951 Testing and Maintenance 13-45 Courtesy of NationalSwitchgear.com...
Page 353 Step 10 Connect and apply, 120 Vac, 60Hz voltage source to Vx input C17 and C18. Step 11 Repeat steps 5 through 9. Step 12 (optional)Repeat Steps 1 through 11 for setting groups 1,2, and 3. 13-46 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 354: Time Delay Verification
Step 1 Prepare the 25-function block for testing by transmitting the commands in Table 13-67 to the relay. Table 13-67. Synchro Check Pickup Test Commands Command Purpose Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. Confirm overwrite BE1-951 Testing and Maintenance 13-47 Courtesy of NationalSwitchgear.com...
Page 355 Step 3 Connect relay terminals C13 (A-phase), C14 (B-phase), and C15 (C-phase) together. Apply a 50 Vac, 50 or 60-Hertz ac voltage source (Line VTP) to the three jumpered terminals and the Neutral terminal (C16). 13-48 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 356: 25Vm1 And 25Vm2 Output Test
Delta Slip setting. Also check on the fast side (60.25 for a 60 Hertz relay) Step 10 Repeat step 9 for the Auxiliary Voltage input Step 11 (Optional) Repeat Steps 4 through 10 for setting groups 1, 2, and 3. BE1-951 Testing and Maintenance 13-49...
Page 357: Breaker Failure
A or B (1 A) 0.09 A 0.11 A D, E, or F (5 A) 0.45 A 0.55 A Step 4 Transmit the commands in Table 13-74 to set the BF time delay. 13-50 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 358: Virtual Switches
Table 13-75. x43 Mode 1 Test Commands Command Purpose Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. Confirm overwrite SL-N=MODE1 Sets MODE1 as custom logic name SL-43=1 Sets 43 for Mode 1 operation BE1-951 Testing and Maintenance 13-51 Courtesy of NationalSwitchgear.com...
Page 359 Result: OUT1 contact closes for 200 milliseconds and returns to the open state. Table 13-78. x43 Mode 1 Pulse Commands Command Purpose CS-43=P Selects 43 for Pulse operation CO-43=P Executes 43 for Pulse operation 13-52 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 360: Mode 2 - On/Off
Step 1 Prepare for Mode 3 testing by transmitting the commands in Table 13-82 to the relay. Table 13-82. x43 Mode 3 Test Commands Command Purpose Gain write access SL-N=NONE Zero out custom logic settings. Overwrite with logic=none settings. BE1-951 Testing and Maintenance 13-53 Courtesy of NationalSwitchgear.com...
Page 361: Virtual Breaker Control Switch
SL-VO1=101T Enables OUT1 to close when 101T is TRUE SL-VO1=101C Enables OUT2 to close when 101C is TRUE SL-VO1=101SC Enables OUT3 to close when 101SC is TRUE EXIT;Y Exit and save settings. 13-54 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 362: Virtual Lockout (Latch)
1 at HMI screen 1.5.2, or monitoring OUT1 contacts between terminals C1 and C2, or by using the RG-STAT command. See Section 6, Reporting and Alarm Functions for more information. Step 3 Connect negative or non-polarity power supply voltage (PSV) to Input 1 and 2 terminals B2 and BE1-951 Testing and Maintenance 13-55...
Page 363: Logic Timer
Step 3 Transmit the commands in Table 13-90 to the relay. These commands will initiate the 62 timer by changing the 43 switch state to closed (logic 1). Once initiated, the 62 timer will force an output based on the 400 millisecond pickup time setting. 13-56 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 364 Figure 13-4 illustrates the timing relationship of the 43 switch and 62 timer. D2843-08.vsd 02-02-99 B L K Figure 13-4. x62 Mode 1 (Pickup/Dropout) Timing Example BE1-951 Testing and Maintenance 13-57 Courtesy of NationalSwitchgear.com...
Page 365: Mode 2 - One-Shot Nonretriggerable
FALSE-TRUE-FALSE pulse action was logged and that approximately 400 milliseconds after the initial 143 FALSE-TRUE-FALSE initiate signal action, the 162 timer output went TRUE. Then, approximately 20 seconds later, duration timer T2 expired and the timer output went FALSE 13-58 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 366: Mode 3 - One-Shot Retriggerable
Wait at least 15 seconds (but no longer than 35 seconds) to execute next commands. CS-343=P Selects 343 for pulse F-T-F operation CO-343=P Executes 343 pulse F-T-F operation EXIT Exit select and operate mode. BE1-951 Testing and Maintenance 13-59 Courtesy of NationalSwitchgear.com...
Page 367: Mode 4 - Oscillator
Name switch 43 to make SER easier to read. SL-62=5,43,0 Enables 62 integrating mode, 43 initiate, no blocking S0-62=15s,5s Sets T1 at 15 seconds Sets T2 at 5 seconds EXIT;Y Exit and save settings. 13-60 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 368 T i m e r Figure 13-6. Mode 5 (Integrating Timer) Timing Example Step 4 (Optional) Repeat the 62 timer tests for Modes 1, 2, 3, and 5 for setting groups 1, 2, and 3. BE1-951 Testing and Maintenance 13-61 Courtesy of NationalSwitchgear.com...
Page 369 Execute the following commands in less than 30 seconds. CS-43=P Selects 43 for pulse operation CO-43=P Executes 43 pulse operation Wait at least 30 seconds (total elapsed time) to initiate the block command. CS-143=P Selects 143 for pulse operation 13-62 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 370 Sets logic mode to discrete selection with virtual switch and contact input control SL-51P=1,0 Enables 51P, disables blocking SG-SGCON=1S Sets SGC on-time at 1 second SL-VO1=SG1 Closes OUT1 when SG1 is active BE1-951 Testing and Maintenance 13-63 Courtesy of NationalSwitchgear.com...
Page 371 (OUT1, OUT2, OUT3) status. Table 13-101. 51P Element Pickup Settings Sensing Type Command Comments S0-51P=1.0,5.0,I2 pu=1.0,td=5,curve=I2 S0-51P=1.5,5.0,I2 pu=1.5,td=5,curve=I2 S0-51P=1.8,5.0,I2 pu=1.8,td=5,curve=I2 S0-51P=2.2,5.0,I2 pu=2.2,td=5,curve=I2 S0-51P=5.0,5.0,I2 pu=5.0,td=5,curve=I2 S0-51P=7.5,5.0,I2 pu=7.5,td=5,curve=I2 S0-51P=9.0,5.0,I2 pu=9.0,td=5,curve=I2 S0-51P=10.5,5.0,I2 pu=10.5,td=5,curve=I2 13-64 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 372 If the active setting group does not change, step the current down to just above the low limit for the duration indicated. This will verify the accuracy of the pickup. Continue stepping the current down to each new level. BE1-951 Testing and Maintenance 13-65...
Page 373 Step 2 Transmit the select and operate commands in Table 13-105 to the relay. Table 13-105. Manual Setting Group Control Selection Command Purpose Gain write access CS-143=0 Selects 143 for FALSE operation CO-143=0 Executes 143 FALSE operation CS-43=1 Selects 43 for TRUE operation 13-66 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 374 443=1, setting group 1 is selected). For more information on setting group selection, see Section 4, Protection and Control , Setting Groups. Step 3 Transmit the select and operate commands in Table 13-107 to the relay. BE1-951 Testing and Maintenance 13-67...
Page 375 Selects 43 for FALSE operation CO-43=0 Executes 143 FALSE operation EXIT Exit select and operate mode Step 4 Verify that VO1 goes FALSE and opens OUT1 when SG0 becomes the active setting group. 13-68 Testing and Maintenance BE1-951 Courtesy of NationalSwitchgear.com...
Page 376 Equation A-2 ..............A-1 BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 377 CHARACTERISTIC CURVES GENERAL Basler Electric inverse time-overcurrent relays (ANSI Device 51) provide time/current characteristic curves that closely emulate most of the common electromechanical, induction disk relays manufactured in North America. To further improve relay coordination, selection of integrated reset or instantaneous reset characteristics is also provided.
Page 378 Curve S1R has integrated reset. TIME-OVERCURRENT CHARACTERISTIC CURVE GRAPHS Figures A-1 through A-17 illustrate the characteristic curves of the BE1-951 relay. Table A-2 cross- references each curve to existing electromechanical relay characteristics. Equivalent time dial settings were calculated at a value of five times pickup. A drawing number is provided in the caption of each graph.
Page 379 Basler Electric relays are not identical to the settings of electromechanical induction disk overcurrent relays. Table A-3 helps you convert the time dial settings of induction disk relays to the equivalent setting for Basler Electric relays. Enter time dial settings at HMI screens 5.X.4.1 (51P), 5.X.4.2 (51N), 5.X.4.3 (151N), and 5.X.4.4 (51Q).
Page 380 In applications where the time coordination between curves is extremely close, we recommend that you choose the optimal time dial setting by inspection of the coordination study. In applications where coordination is tight, it is recommended that you retrofit your circuits with Basler Electric electronic relays to ensure high timing accuracy.
Page 381 Figure A-1. Time Characteristic Curve S, S1 Short Inverse, 99-1369, (Similar to ABB CO-2) BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 382 Figure A-2. Time Characteristic Curve S2, Short Inverse, 99-1595 (Similar to GE IAC-55) Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 383 Figure A-3. Time Characteristic Curve L, L1, Long Inverse, 99-1370, (Similar to ABB CO-5) BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 384 Figure A-4. Time Characteristic Curve L2, Long Inverse, 99-1594, (Similar to GE IAC-66) Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 385 Figure A-5. Time Characteristic Curve D, Definite Time, 99-1371, (Similar to ABB CO-6) BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 386 Figure A-6. Time Characteristic Curve M, Moderately Inverse, 99-1372, (Similar to ABB CO-7) A-10 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 387 Figure A-7. Time Characteristic Curve I, I1 Inverse Time, 99-1373 (Similar to ABB CO-8) BE1-951 Appendix A-11 Courtesy of NationalSwitchgear.com...
Page 388 Figure A-8. Time Characteristic Curve I2, Inverse Time, 99-1597 (Similar to GE IAC-51) A-12 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 389 Figure A-9. Time Characteristic Curve V, V1, Very Inverse, 99-1374 (Similar to ABB CO-9) BE1-951 Appendix A-13 Courtesy of NationalSwitchgear.com...
Page 390 Figure A-10. Time Characteristic Curve V2, Very Inverse, 99-1596 (Similar to GE IAC-53) A-14 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 391 Figure A-11. Time Characteristic Curve E, E1, Extremely Inverse, 99-1375 (Similar to GE IAC-11) BE1-951 Appendix A-15 Courtesy of NationalSwitchgear.com...
Page 392 Figure A-12. Time Characteristic Curve E2, Extremely Inverse, 99-1598 (Similar to GE IAC-77) A-16 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 393 Figure A-13. Time Characteristic Curve A, Standard Inverse, 99-1621 BE1-951 Appendix A-17 Courtesy of NationalSwitchgear.com...
Page 394 Figure A-14. Time Characteristic Curve B, Very Inverse, 99-1376 A-18 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 395 Figure A-15. Time Characteristic Curve C, Extremely Inverse, 99-1377 BE1-951 Appendix A-19 Courtesy of NationalSwitchgear.com...
Page 396 Figure A-16. Time Characteristic Curve G, Long Inverse, 99-1622 A-20 Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 397 Figure A-17. 46 Time Characteristic Curve BE1-951 Appendix A-21 Courtesy of NationalSwitchgear.com...
Page 398 M-WATT or M-W or M-P primary units. 3.8.2, 3.8.3 Table B-3. Control Commands ASCII Command Function HMI Screen CO-<control>[=<mode>] Control operation. CS-<control>[=<mode>] Control selection. CS/CO-43 Control virtual switches 2.1.x CS/CO-101 Control breaker control switch 2.2.1 BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 399 RE-KVARH[=0] Read/Reset three-phase varhours. 4.5.4 (–) 4.5.1 (+) RE-KWH[=0] Read/Reset three-phase watthour. 4.5.2 (–) RF[-n/NEW][=0/TRIG] Read/Reset fault report data. Report general information. RG-DATE[=<M/D/Y>] or RG-DATE[=<D-M-Y>] Read/Set date. RG-STAT Report relay status. RG-TARG[=0] Report/Reset target status. Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 400 Read analog signal dsp filter type. SG-FREQ[=<freq(Hz)>] Read/Enter power system frequency. 6.3.6 SG-HOLD<x>[=<1/0 hold ena>] Read/Program output hold operation. SG-ID[=<relayID>,<StationID>] Read/Set relay ID and station ID used in reports. SG-IN<x>[=<Recognition Time>,<Debounce Time>] Read/Set input recognition/denounce. BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 401 SL-BF<x>[=<mode>,<INI logic>,<BLK logic>] Read/Set logic for breaker failure function modules. SL-GROUP[=<mode>,<D0 logic>,<D1 logic>] Read/Set logic for setting group module. SL-N[=<name>] Read, set, or copy the name of the custom logic. SL-VO<x>[=<Boolean equation>]] Read/Set output logic. Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 402 Read/Set loss of potential pickup setting. 5.5.2.1 5.5.2.2 SP-BF[=<time>[m/s/c]] Read/Set the breaker failure timer setting 5.5.1.1 SP-CURVE[=<A>,<B>,<C>,<N>,<R>] Read/Set the user programmable 51 curve parameters. Table B-12. Global Command ASCII Command Function HMI Screen GS-PW<t>[=<password>,<com ports(0/1/2)>]] Read or change a password. BE1-951 Appendix Courtesy of NationalSwitchgear.com...
Page 403 APPENDIX C • RELAY SETTINGS RECORD INTRODUCTION This appendix lists all BE1-951 settings in the form of a settings record. These settings sheets may be removed, photocopied and used to record information relative to your protection system. Settings are grouped in the following order.
Page 404 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number GLOBAL SECURITY SETTINGS Global PW and Access Ports = Password, 8 Char Ports, 0/1/2 GS-PWG Control PW and Access Ports = Password, 8 Char...
Page 405 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Auxiliary Overvoltage = Mode, 0,1,2,3 Blk Input Expr SL-59X Over/Underfrequency = Mode, 0,1,X Blk Input Expr SL-81 SL-181 SL-281 SL-381 SL-481 SL-581 Power Functions...
Page 406 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number VO w/ HW Outputs (Continued) = Output Expression--AND (*), OR (+), NOT (/) SL-VO4 SL-VO5 Additional VO = Output Expression--AND *, OR +, NOT /...
Page 407 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number GLOBAL I/O SETTINGS Power System Settings Nominal Frequency = Hz SG-FREQ System Rotation = Mode,ABC,CBA SG-PHROT CT Ratio = Ratio, Turns SG-CTP SG-CTG VT Ratio...
Page 408 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Inst OC w/ Time Delay (Continued) = Pick Up, Sec A Time, M,C,S 67 Control, N,F,R S0-150TN S0-150TQ Time Overcurrent = Pick Up, Sec A ,...
Page 409 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Power Functions Directional Power = Pick Up, Sec Watts Time, M, C, S Direction F, R S0-32 S0-132 Miscellaneous Functions Timers = T1 Time, M,C,S...
Page 410 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number 25 Voltage Monitor = Live Cond., Sec V , Dead Cond., Sec V , Dropout Delay, M,C,S S1-25VM 25 Voltage Monitor-2nd Line = Delimiters , Mode 25VM1...
Page 411 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number GROUP 2 Current Functions Inst OC w/ Time Delay = Pick Up, Sec A Time, M,C,S 67 Control, N,F,R S2-50TP S2-50TN S2-50TQ S2-150TP S2-150TN...
Page 412 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Over/Underfrequency = Pick Up, Hz Time, M,C,S Mode, O,U S2-81 S2-181 S2-281 S2-381 S2-481 S2-581 81 Voltage Inhibit = Drop Out, Sec V S2-81INH...
Page 413 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Directional Overcurrent = Ground Polarization Mode, Q=Neg Seq, V=Zero Seq Voltage, I=Zero Seq Current S3-67N Voltage Functions Volts per Hertz = Pick Up, Sec V/HZ , Time Dial...
Page 414 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Recloser = Time, M=mSec,C=Cyc,S=Sec(M is deflt if not specified) S3-791 S3-792 S3-793 S3-794 S3-79R S3-79F S3-79M Recloser SCB Output = Trip Numbers S3-79SCB GENERAL PROTECTION SETTINGS...
Page 415 Demand Interval = Time, Min (DIP setting applies to Power Demands also) SG-DIP SG-DIN SG-DIQ The following setting is only for relays with Load Profile Recording (Style # BE1-951 xxxxxxY). Demand Logging Interval = Time, Min SG-LOG FAULT REPORTING SETTINGS The targets setting only applies to units with Version 2.31 (2/19/98) or later Embedded Programming.
Page 416 , Reply Ack, R0,1 SG-COM2 Rear RS485 Port-2nd Line = Delimiters , Handshake SG-COM2 = ,,, The following settings are only for units with Modbus (Style # BE1-951 xx-xxx1). EP Format, Remote RS485 Port Modbus Settings MF0,1 , Parity, MPN,O,E Delay,MRmSec...
Page 417 BE1-951 SETTINGS RECORD Substation ID Relay ID Date Page BE1-951 Style Number Serial Number Version Number Power Demand Alarms = FWD Threshold, Sec W/var , RVS Threshold, Sec W/var SA-DVAR SA-DWATT Volts/Hz Alarm = Threshold, Sec V/Hz SA-24 Alarm Priority...
Page 418 APPENDIX D • TERMINAL COMMUNICATION This appendix provides instructions for configuring Windows 95® HyperTerminal and Windows® Terminal to communicate with your BE1-951 relay. WINDOWS 95® HYPERTERMINAL Step 1. Click Start: Highlight Programs, Accessories, HyperTerminal. Step 2. Click HyperTerminal to open the folder.
Page 419 Step 1. In Program Manager, open the Accessories program group and double click the Terminal icon to start the program. Step 2. On the menu bar, select Settings/Terminal Emulation. a. In the dialog box, click DEC VT-100 (ANSI). b. Click “OK”. Appendix BE1-951 Courtesy of NationalSwitchgear.com...
Page 420 Adjust the Baud Rate setting so that it matches the setting of the relay. The default baud rate Figure D-5. Text Transfers Dialog Box of the BE1-951 is 9600. Set the Data Bits at 8. Disable Parity Check. Set the Stop Bits at 1.
Page 421 Time-Overcurrent Elements ..4-15 Timers ......4-50 BE1-951 Index...
Page 422 Voltage ......5-1 MOUNTING ......12-1 Index BE1-951 Courtesy of NationalSwitchgear.com...
Page 423 Trip Circuit Monitoring ....1-4 TROUBLE SHOOTING ....2-7 BE1-951 Index...
Page 424 Setting Voltage ....4-18 VTX Connection ..... . . 4-31 Index BE1-951 Courtesy of NationalSwitchgear.com...