Page 1 Line Protection™ System Instruction Manual LPS-O Revision: V0001.03AA20 Manual P/N: GEK-106266A Copyright © 2001 GE Power Management Note: All relays must be powered up at least once per year to avoid deterioration of electrolytic capacitors and subsequent relay failure. GE Power Management...
Page 3 These instructions do not purport to cover all details or variations in equipment nor provide for every possible contingency to be met in connection with instal- lation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the pur- chaser’s purpose, the matter should be referred to the General Electric Company.
Page 5: Table Of Contents
INTRODUCTION ..................1-20 1.8.2 STEP DISTANCE ..................1-20 1.9 OUT-OF-STEP TRIPPING 1.9.1 DESCRIPTION ..................1-22 1.9.2 OST CHARACTERISTIC SHAPE............1-22 1.9.3 OUT-OF-STEP DETECTION..............1-24 1.9.4 TWO-CHARACTERISTIC OPERATION..........1-24 1.9.5 OUT-OF-STEP OSCILLOGRAPHY CAPTURE........1-24 GE Power Management LPS-O Line Protection System...
Page 6 3.1.2 ELECTRICAL CONNECTIONS AND WIRING .......... 3-5 3.1.3 IDENTIFICATION ..................3-5 3.1.4 SYSTEM BLOCK DIAGRAM ..............3-5 3.2 INSTALLATION 3.2.1 RECEIVING, HANDLING, & STORAGE............ 3-7 3.2.2 ENVIRONMENT ..................3-7 3.2.3 MOUNTING ....................3-7 LPS-O Line Protection System GE Power Management...
Page 7 T3 – IB BLOCKING SUPERVISION TEST ..........5-3 5.1.5 T4 – GROUND DIRECTIONAL TRIP TEST ..........5-3 5.1.6 T5 – GROUND DIRECTIONAL BLOCK TEST .......... 5-4 5.1.7 T6 – PHASE INSTANTANEOUS OVERCURRENT TEST ......5-4 GE Power Management LPS-O Line Protection System...
Page 8 T18 – OUT-OF-STEP TRIP TEST ............5-21 5.5 END OF TEST WITH FACTORY SETTINGS 5.5.1 ENDING TESTS ..................5-22 6. FUNCTIONAL TESTS 6.1 LPS-O FUNCTIONAL TESTS (USER SETTINGS) 6.1.1 DESCRIPTION ..................6-1 a MEASURING UNIT TESTS ............... 6-1 b ZONE PHASE REACH TESTS..............6-1 6.1.2...
Page 9 DIGITAL OUTPUT STATUS ..............8-21 8.2.7 EVENT INFORMATION................8-21 8.2.8 COMMUNICATION PASSWORDS ............8-23 8.2.9 REQUEST STATION/LINE ID ..............8-24 8.2.10 REQUEST LPS-O MODEL/VERSION............. 8-24 8.2.11 OSCILLOGRAPHY SNAPSHOT ............. 8-25 8.3 ASCII INTERFACE 8.3.1 DESCRIPTION ..................8-26 8.3.2 RECOMMENDED REMOTE COMMUNICATIONS PACKAGEs..... 8-26 8.4 REMOTE COMMUNICATION INTERFACE...
Page 10 10.3.11 EXIT ....................... 10-11 10.4 EDIT MENU 10.4.1 COPY ..................... 10-12 10.4.2 COPY TEXT ONLY ................10-12 10.4.3 COPY MHO CIRCLE ONLY ..............10-12 10.5 VIEW MENU 10.5.1 DESCRIPTION ..................10-13 10.5.2 TOOLBAR ....................10-13 LPS-O Line Protection System GE Power Management...
Page 11 11.6.4 GET LOGIC ................... 11-20 11.6.5 SET DATE AND TIME ................11-20 11.6.6 CHANGE BUS/STATION ID ..............11-20 11.6.7 TOC CURVES ..................11-20 11.6.8 CALIBRATION ..................11-20 11.7 ACTIONS 11.7.1 DESCRIPTION ..................11-21 GE Power Management LPS-O Line Protection System...
Page 12 13.2.2 BOOLEAN OPERATORS, LATCHES, TIMERS, & COUNTERS .... 13-5 a BOOLEAN OPERATORS ................ 13-5 b LATCHES ....................13-5 c TIMERS ....................13-6 d COUNTERS ..................... 13-7 13.3 XPRESSION BUILDER FLAGS 13.3.1 CONTACT CONVERTER INPUTS ............13-8 LPS-O Line Protection System GE Power Management viii...
Page 13 LIST OF FIGURES ..............B-2 C. KEYPAD MENUS C.1 KEYPAD MENUS C.1.1 SET MENU ................C-1 C.1.2 ACT KEYPAD MENU .............C-2 C.1.3 INF KEYPAD MENU...............C-3 D. WARRANTY D.1 WARRANTY INFORMATION D.1.1 GE MULTILIN WARRANTY ...........D-1 GE Power Management LPS-O Line Protection System...
Page 14 TABLE OF CONTENTS LPS-O Line Protection System GE Power Management...
Page 15: Product Description
Home Page: www.GEindustrial.com/pm 1.1.2 PASSWORDS: FACTORY SET The LPS-O relay requires the use of passwords to change Settings or to perform Actions. No password is required to obtain information from the relay, including viewing the existing settings. The relay is shipped from the factory with the following Local User Interface (LUI) passwords: SETTINGS: 123.
Page 16: Remote Communications Via Local Pc
ACTIONS menu by selecting CHANGE PASSWORD. Before the user can change another password it is necessary to logout from the LPS-O. The user can then change the remaining passwords by first logging into the LPS-O using another default password. The commu- nications passwords may be viewed, in an encoded format, via the keypad with the [INF] (Information) key.
Page 17: Ordering
Recloser No recloser EXAMPLE: LPSOB35U23VE1N = LPS-O Digital Line Protection Distance Relay; revision B; three phase trip- ping logic; rated at 5 amperes; without series capacitor protection; 110/125 VDC supply; contact tripping out- puts; 3 communications ports; vertical mounting; with extended memory; with OST functions; and no recloser.
Page 18: Introduction
The LPS-O is packaged in a compact 3 Rack Unit high (one RU = 1.75 Inch) 19-inch rack mount case which is available for either horizontal or vertical mounting. The case outline and mounting dimensions for the LPS-O are shown in Figure 3–1: FRONT AND REAR VIEWS OF THE LPS-O on page 3–1.
Page 19 1 PRODUCT DESCRIPTION 1.2 INTRODUCTION Table 1–2: LPS-O MEASUREMENT FUNCTIONS Zone or Type Functions Zone 1 • 3 Variable-Mho phase-distance functions with time delay Zone 2 (Pilot Zone) • 3 Variable-Mho phase distance functions with time delay Ground directional-overcurrent functions consisting of:...
Page 20: Custom Programmability
O custom programming features and Xpression Builder is included in Chapter 13: XPRESSION BUILDER . 1.3.2 CONFIGURABLE INPUTS All of the contact converters (Digital Inputs) in the LPS-O are user configurable. However, each LPS-O relay is shipped with the Default Contact Converter Assignments shown in Table 1–3: LPS-O DEFAULT CONTACT CONVERTER ASSIGNMENTS below and the elementary diagram Figure 1–11: ELEMENTARY DIAGRAM on...
Page 21: Programmable Logic
1.3.4 PROGRAMMABLE LOGIC In addition to configurable I/O, the LPS-O relay includes the capability for the design of custom logic. This logic may be used to supplement or to replace the built-in scheme logic. The programmable logic includes the fol- lowing: up to 40 logic gates (AND, OR, NOT), each with up to 4 inputs;...
Page 22: Auxiliary Protection Functions
Mho distance functions can not operate because they do not have a source of polarizing voltage. Figure 1–2: LINE PICKUP LOGIC DIAGRAM shows the functional logic for Line Pickup on the LPS-O. LPS-O Line Protection System GE Power Management...
Page 23: Remote-Open Detector
2. A fault is detected – logic 1 output from ANY ZONE2 PHASE-DISTANCE FUNCTION. 3. The remote breaker opens – logic 1 output from AND3. 4. The fault is still present, so the two inputs to AND4 persist for the time-delay setting of timer TL20. GE Power Management LPS-O Line Protection System...
Page 24: Out-Of-Step Blocking
* 30 ms. INITIAL PICKUP TIME A D A P T I V E A F T E R F I R S T S L I P C Y C L E Figure 1–4: OSB LOGIC DIAGRAM LPS-O Line Protection System GE Power Management...
Page 25 This adaptive pickup provides improved capability to maintain the out-of-step output during the increasing slip frequencies that are typically encountered after the first slip cycle. GE Power Management LPS-O Line Protection System...
Page 26: Other Features
LPS-O issues a trip. If the LPS-O issues a trip, then a normal fault report is stored as part of the oscillography data. If the LPS-O does not issue a trip, a pseudofault report is created. The trip type is listed as OSC, the trip time is the time of the OSC Trigger, the operating time is set to zero, and the fault type and location are computed with post-OSC Trigger data.
Page 27: Playback
1.5.8 EQUIPMENT DUTY When the LPS-O is applied with a single breaker, the LPS-O relay system incorporates the ability to monitor the number of breaker operations and the breaker duty. Alarm levels can be set for both the total number of breaker operations and the total equipment duty.
Page 28: Time Synchronization
An unmodulated IRIG-B signal connected to the IRIG-B terminals, located on terminal block “D” on the rear panel, may be used to synchronize the clock. The clock in a given LPS-O is synchronized to within ±1 ms of any other LPS-O clock if the two relays are wired to the same synchronizing signal.
Page 29: Trip Bus Check
Operation of the Trip Circuit Monitor causes a noncritical alarm event. If one or more poles of the breaker are opened in some manner other than by a trip issued by the LPS-O, then the 52/a contact normally wired in series with the trip coil opens and drops the voltage across the open contact to zero.
Page 30: Metering
Remote breaker tripping and closing are enabled or disabled with a jumper on the Processor module as shown in Figure 3–6: INPUT BOARD DIAGRAM on page 3–9. The LPS-O is shipped from the factory with this jumper removed and Breaker Control enabled. Install the jumper to disable Remote Breaker Control.
Page 31: Communications
Refer to Section 8.1.20: CHANGE PASSWORD on page 8–17 for a description of the keypad password usage. 1.6.2 SERIAL COMMUNICATIONS Three serial communications ports are standard on the LPS-O. A DB-9 plug RS232 port (Port 1) located on the front panel of the unit provides local serial communication with the LPS-O via an IBM PC-compatible computer.
Page 32: Self-Test Features
(1 A or 5 A). Next, the i960 processor enables the outputs. As the final step, the LPS-O checks the results of all tests to determine whether to turn on the green status LED on the front panel.
Page 33: Continuous Monitor
Fault Detec- tor. If such a condition occurs and persists for 1 second, the LPS-O relay will issue a non-critical alarm and log a continuous monitor event.
Page 34: Protection Scheme Descriptions
1–11: ELEMENTARY DIAGRAM on page 1–25 shows the external connections to the LPS-O relay system. Note that all of the output relays and input contact converters included in the LPS-O are fully programmable by the user. However, for ease of application, the LPS-O relay is shipped with the inputs and outputs as assigned in Figure 1–11: ELEMENTARY DIAGRAM on page 1–25.
Page 35 O U T O F S T E P S E T T # B L O C K I N G L O G I C 1601-1607 STP_DST3.VSD Figure 1–8: STEP DISTANCE LOGIC DIAGRAM GE Power Management LPS-O Line Protection System...
Page 36: Out-Of-Step Tripping
Also, the SWING LOCUS may be above the location shown, depending on the relation- ship between the relay location and the electrical center of the power system. LPS-O Line Protection System GE Power Management...
Page 37 (far outside the OUTER characteristic) to a point within the INNER characteristic. This change occurs immediately for a fault condition, but occurs at a much slower rate for a swing. GE Power Management LPS-O Line Protection System...
Page 38: Out-Of-Step Detection
(OSB) condition or an Out-of-Step Trip (OST) condition is detected. If both an OSB and OST are detected, the data is stored based on the OST operation. Only one OS data file is stored in the LPS-O. Once the data is cap- tured, it will not be overwritten until it is retrieved from the LPS-O or cleared by an OS data reset command.
Page 39: Elementary Diagram
1 PRODUCT DESCRIPTION 1.10 ELEMENTARY DIAGRAM 1.10 ELEMENTARY DIAGRAM 1.10.1 ELEMENTARY DIAGRAM Figure 1–11: ELEMENTARY DIAGRAM GE Power Management LPS-O Line Protection System...
Page 40: Elementary Diagram
1.10 ELEMENTARY DIAGRAM 1 PRODUCT DESCRIPTION LPS-O Line Protection System GE Power Management...
Page 41: Calculation Of
2 CALCULATION OF SETTINGS 2.1 INTRODUCTION 2.1.1 DESCRIPTION There are a number of settings that must be made in the LPS-O relaying system. These settings are divided into two categories, with each category divided into the sub-groups shown below: a) GENERAL SETTINGS •...
Page 42 Alternatively, use the LPSO-Link communications program to access and modify an existing settings file (a sample settings file is included with the LPS-O software). This file can then be downloaded to the LPS-O system and saved for possible modification in the future.
Page 43: General Settings
T2 to T4 are available for assignment to different tasks through the Xpression Builder program pro- vided with the LPS-O system. Outputs T3 and T4 are used only if two breakers are being controlled and if each of the breakers has two independent trip circuits (NUM_TC = 2). If independent trip coils are not being used, then the T3 to T4 contacts can be re-assigned through Xpression Builder.
Page 44 Figure 2–1: TRIP CIRCUIT MONITOR The trip contacts are also monitored when a trip is initiated by the LPS-O system. If the voltage across the con- tacts does not drop when the trip is initiated, then it is assumed that the trip circuit is not intact and an alarm is issued.
Page 45: Communications
Table 2–2: SETTING FORMAT FOR NUM_MON Position Output As an example, if you are using an LPS-O and outputs T1 and T3 are to be monitored and T2 and T4 are not, the following setting would be used: NUM_MON = 0101 This setting is entered in to the relay from the LUI in decimal format (that is, NUM_MON = 5).
Page 46: Oscillography
The baud rate setting of 300, 1200, 2400, 4800, 9600, or 19200 must be set to match the baud rate of the modem or serial device connected to the serial port of the LPS-O relay system. The parity and stop bits must match those selected for the serial port of the remote PC.
Page 47: Equipment Duty
The number of operations and the total duty can start from zero, or if the existing number of operations or total duty is known, those values can be entered into the LPS-O system which will use them as the starting point.
Page 48 This flag may be directly assigned to an output contact or used in configurable logic. 2.2.5 PROGRAMMABLE INPUTS There are twelve contact converters provided in the LPS-O relay. These contact converters are used to convert contact inputs into logic signals for use within scheme logic. Each of the contact converters can be pro- grammed to be driven by any of the signals defined by the first 32 Index Numbers listed in Table 2–5: INDEX...
Page 49: Protection Settings
MR = Maximum Allowable Reach ZL = Load Impedance D = Angle of Maximum Reach B = Characteristic Angle; < 90 = Lens C = Load Impedance Angle Figure 2–2: MAXIMUM ALLOWABLE REACH GE Power Management LPS-O Line Protection System...
Page 50: Z2Distance
2. Cause the Zone 2 functions to lose selectivity with the second zone phase distance functions on the shortest adjoining line section. If this requirement cannot be met by limiting the reach, then it may be necessary to get this selectivity by setting timer PUTL2P with additional time delay. LPS-O Line Protection System GE Power Management...
Page 51: Z3Distance
2. Cause the Zone 3 functions to lose selectivity with the third zone phase distance functions on the shortest adjoining line section. If this requirement cannot be met by limiting the reach, then it may be necessary to get this selectivity by setting timer Z3P_TIME with additional time delay. GE Power Management LPS-O Line Protection System...
Page 52: Z4Distance
2.3.5 Z4DISTANCE The settings to be used on the Zone 4 distance functions in the LPS-O system depend on the application. The phase distance functions are set to look in the reverse direction relative to the Zone 1, Zone 2 and Zone 3 phase distance functions (see Figure 2–4: PHASE DISTANCE REACH below).
Page 53 Figure 2–5: R-X DIAGRAM FOR ZONE 4 DISTANCE FUNCTIONS The Zone 4 phase distance functions in the LPS-O system are not provided with offset because they use an adaptive memory feature to provide the operation needed for bolted three-phase faults at the relay location.
Page 54: Cursupvisn
The IPT_PICKUP, IPB_PICKUP, and IPBKFACTOR settings have no significance in the step distance scheme used with the LPS-O. However the IPT and IPB functions are available for general purpose use in the LPS-O for configurable outputs. The settings are not user adjustable and are fixed to values shown in the Table below.
Page 55: Overcurrnt
Tripping will not be permitted unless there is a concurrent output from the fault detector, resulting in an increase of security. The LPS-O system monitors the output of the fault detector. If it produces an output that lasts for more than 60 seconds, then it is an indication that: 1.
Page 56 In general, directional control should be used when the operating current for a fault behind the relay location is much greater than the operating current for a fault at the remote end of the line. LPS-O Line Protection System GE Power Management...
Page 57 51G function to provide some backup during a loss of potential. A 51GPCKUPFF setting must always be set as given above and is based on the maximum operating quantity that can be obtained for a fault at either end of the line. GE Power Management LPS-O Line Protection System...
Page 58: Voltage
This setting establishes the voltage on which per unit voltage values are based. RATEDVOLTS can be set to 100, 105, 110, 115 or 120 volts. Use a setting that is closest to the voltage that is applied to the LPS-O system.
Page 59: Linepickup
Line Pickup provides tripping in the event that the breaker is closed into a zero-voltage bolted three-phase fault, such as occurs if the grounding chains are left on the line following maintenance. Figure 2–8: LINE PICKUP FUNCTIONAL LOGIC shows the functional logic for Line Pickup. GE Power Management LPS-O Line Protection System...
Page 60 However, this feature still results in faster tripping for per- manent faults past the Zone 1 reach, and below the pickup of the I1 function. LPS-O Line Protection System GE Power Management...
Page 61: Remoteopen
3. The remote breaker opens and charging current is detected – logic 1 output from AND3. 4. The fault is still present, so the two inputs to AND4 persist and a trip output will be produced following the time-delay setting of timer TL20. GE Power Management LPS-O Line Protection System...
Page 62: Lineovrld
Use a LEVEL2PU setting that meets the specific application. 1004: LEVEL1TDLY - Level 1 Time Delay Use a LEVEL1TDLY setting that meets the specific application. 1005: LEVEL2TDLY - Level 2 Time Delay Use a LEVEL2TDLY setting that meets the specific application. LPS-O Line Protection System GE Power Management...
Page 63: Scheme Timers
1202: CTRATIO - Current Transformer Ratio The LPS-O system will report present values in terms of secondary values or primary values as set by General Setting 108: DISPLAYVAL. The ratio of the of the current transformers used to supply the system is used in this procedure.
Page 64: Os Blocking
2 CALCULATION OF SETTINGS 2.3.14 OS BLOCKING Out-of-step blocking (OSB) is offered as a standard feature in the LPS-O system. Refer to Section 1.4.4: OUT- OF-STEP BLOCKING on page 1–10 for a complete description of the OSB logic. The OSB function is imple- mented through the phase distance functions in the LPS-O system as shown in Figure 2–11: OSB FUNCTION...
Page 65: Os Tripping
Set BLOCKZ4 = YES to block tripping by any of the Zone 4 functions, otherwise set BLOCKZ4 = NO. 2.3.15 OS TRIPPING The LPS-O system is supplied with out-of-step tripping in addition to out-of-step blocking. For a complete description of the operation of the out-of-step tripping logic, see Section 1.9: OUT-OF-STEP TRIPPING on page 1–22.
Page 66 FWDREACH > Zb + Zc 1405: REVREACH: - OST Reverse Reach For the system shown above in Figure 2–13: OST REACH CHARACTERISTIC, set the reverse reach to include the source behind the LPS-O system; that is, REVREACH > Za LPS-O Line Protection System...
Page 67: Noncrit_Al
(Index Number 52). This signal, when produced, will always be reported as an event and it can also be programmed to drive one of the output relays if an external alarm is required. GE Power Management LPS-O Line Protection System...
Page 68: Outputs
2.3.17 OUTPUTS All 24 of the output contacts (Protection Settings 1601 to 1624) in the LPS-O system are configurable. They can be driven by any one of the functions by an index number provided in Table 2–6 on page 2–33. Each of the contacts has a default setting as listed in the Protection Settings listed at the end of this section.
Page 69: Inverse Curves
2 CALCULATION OF SETTINGS 2.4 INVERSE CURVES 2.4 INVERSE CURVES 2.4.1 INVERSE CURVE 0.01 MULTIPLES OF PICKUP 0.97 0.0103 t R ESET t PU 0.0228 ---------------- - ---------------------- - 0.02 – – Figure 2–14: INVERSE CURVE GE Power Management LPS-O Line Protection System...
Page 70: Very Inverse Curve
2.4 INVERSE CURVES 2 CALCULATION OF SETTINGS 2.4.2 VERY INVERSE CURVE 0.01 MULTIPLES OF PICKUP 4.32 TD 3.922 t RESET t PU ---------------- - ---------------- - 0.0982 – – Figure 2–15: VERY INVERSE CURVE LPS-O Line Protection System GE Power Management...
Page 71: Extremely Inverse Curve
2 CALCULATION OF SETTINGS 2.4 INVERSE CURVES 2.4.3 EXTREMELY INVERSE CURVE 0.01 MULTIPLES OF PICKUP TD 5.64 TD 5.82 t PU 0.02434 ---------------- - t RESET ---------------- - – – Figure 2–16: EXTREMELY INVERSE CURVE GE Power Management LPS-O Line Protection System...
Page 72: Reference Tables
DISOUT Outputs Note: Any of the above signals (1 to 32) may be assigned to the 12 available LPS-O Contact Converter Inputs (CC1 to CC12). Those 12 signals will also be available for use for the Programmable Outputs and/or the Configurable Logic. Unassigned signals will NOT be available.
Page 73 MANUAL OPEN BRK1 MNOPN1 Spare MANUAL OPEN BRK2 MNOPN2 Spare MANUAL CLOSE BRK1 MNCLS1 Spare MANUAL CLOSE BRK2 MNCLS2 Spare Fault ID: Phase A Involved DAFLTA Spare Fault ID: Phase B Involved DAFLTB Spare GE Power Management LPS-O Line Protection System...
Page 74 Trip Circuit #2 Voltage Monitor T2TC Status Ground Time Overcurrent Trip TOCTRP Trip Circuit #3 Voltage Monitor T3TC (51G/Toc) Status Out of Step Blocking Trip Circuit #4 Voltage Monitor T4TC Out of Step Trip Status LPS-O Line Protection System GE Power Management...
Page 75 Programmable Logic Gate #11 Output Output Programmable Logic Gate #32 Programmable Logic Gate #12 Output Output Programmable Logic Gate #33 Programmable Logic Gate #13 Output Output Programmable Logic Gate #34 Programmable Logic Gate #14 Output Output GE Power Management LPS-O Line Protection System...
Page 76 Programmable Logic Timer 4 TM4RST RESET Programmable Logic Timer 5 Output Programmable Logic Timer 5 TM5RST RESET Programmable Logic Timer 6 Output Programmable Logic Timer 6 TM6RST RESET Programmable Logic Timer 7 Output LPS-O Line Protection System GE Power Management...
Page 77: Protection Settings Guide
NO, YES NO, YES Z4P_T IM E Z4 Phase Timer 0.00 to 10.0 sec. 0.00 to 10.0 sec. 0.05 sec. step 0.01 step 0.01 see TABLE NOTES on page 2–43 for footnote explanation GE Power Management LPS-O Line Protection System...
Page 78 2.0 A at 5A failure step 0.01 step 0.01 0.4 A at 1A 51GCURVE 51G Curve INV, V-INV, E-INV, INV, V-INV, E-INV, V-INV CUSTOM, DEFT CUSTOM, DEFT see TABLE NOTES on page 2–43 for footnote explanation LPS-O Line Protection System GE Power Management...
Page 79 1 step 1 1005 LEVEL2TDLY Level 2 time delay 10 to 99 sec. 10 to 99 sec. 25 sec. step 1 step 1 see TABLE NOTES on page 2–43 for footnote explanation GE Power Management LPS-O Line Protection System...
Page 80 IN, OUT 1404 FWDREACH OST Forward Reach 0.1 to 75.0 ohms 0.5 to 375.0 ohms 15.0Ω at 5A step 0.1 step 0.5 75.0Ω at 1A see TABLE NOTES on page 2–43 for footnote explanation LPS-O Line Protection System GE Power Management...
Page 81 0 to 256 0 to 256 step 1 step 1 1508 NCAIN8 Non-Critical Alarm Input #8 0 to 256 0 to 256 step 1 step 1 see TABLE NOTES on page 2–43 for footnote explanation GE Power Management LPS-O Line Protection System...
Page 82 0 to 256 step 1 0 to 256 step 1 (configurable) 1620 C2 Contact † † ‡ 0 to 256 step 1 0 to 256 step 1 (configurable) see TABLE NOTES on page 2–43 for footnote explanation LPS-O Line Protection System GE Power Management...
Page 83 * The IPB and IPT settings are fixed as shown and are NOT adjustable by the user. † Contact is normally open; add 1000 to number to close contact under normal conditions. ‡ See Table 2–6 on page 2–33 for index assignments. GE Power Management LPS-O Line Protection System...
Page 84: General Settings Guide
Communications Port #3 GE-MODEM, ASCII none GE-MODEM Protocol ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number LPS-O Line Protection System GE Power Management...
Page 85 Contact Converter 9 ‡ 0 to 32 ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number GE Power Management LPS-O Line Protection System...
Page 86 Contact Converter 12 ‡ 0 to 32 ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number LPS-O Line Protection System GE Power Management...
Page 87: Protection Settings Data Sheet
Z4 Timers NO, YES NO, YES Z4P_T IM E Z4 Phase Timer 0.00 to 10.0 sec. 0.00 to 10.0 sec. step 0.01 step 0.01 see TABLE NOTES on page 2–53 for footnote explanations GE Power Management LPS-O Line Protection System...
Page 88 0.20 to 15.0 amps 0.04 to 3.0 amps failure step 0.01 step 0.01 51GCURVE 51G Curve INV, V-INV, E-INV, INV, V-INV, E-INV, CUSTOM, DEFT CUSTOM, DEFT see TABLE NOTES on page 2–53 for footnote explanations LPS-O Line Protection System GE Power Management...
Page 89 10 to 200 sec. step 1 step 1 1005 LEVEL2TDLY Level 2 time delay 10 to 99 sec. 10 to 99 sec. step 1 step 1 see TABLE NOTES on page 2–53 for footnote explanations GE Power Management LPS-O Line Protection System...
Page 90 NO, YES NO, YES 1402 NUMBRCHAR Select Number of 2, 3 2, 3 Characteristics 1403 TRIPIN_OUT Trip Entering or Leaving Inner IN, OUT IN, OUT see TABLE NOTES on page 2–53 for footnote explanations LPS-O Line Protection System GE Power Management...
Page 91 0 to 256 0 to 256 step 1 step 1 1507 NCAIN7 Non-Critical Alarm Input #7 0 to 256 0 to 256 step 1 step 1 see TABLE NOTES on page 2–53 for footnote explanations GE Power Management LPS-O Line Protection System...
Page 92 0 to 256 step 1 0 to 256 step 1 (configurable) 1619 C1 Contact † † 0 to 256 step 1 0 to 256 step 1 (configurable) see TABLE NOTES on page 2–53 for footnote explanations LPS-O Line Protection System GE Power Management...
Page 93 TABLE NOTES: * The IPB and IPT settings are fixed as shown and are NOT adjustable by the user. † Contact is normally open; add 1000 to number to close contact under normal conditions GE Power Management LPS-O Line Protection System...
Page 94: General Settings Data Sheet
Communications Port #3 GE-MODEM, ASCII none Protocol ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number LPS-O Line Protection System GE Power Management...
Page 95 Contact Converter 9 ‡ 0 to 32 ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number GE Power Management LPS-O Line Protection System...
Page 96 Contact Converter 12 ‡ 0 to 32 ‡ Contact Converter output normally appears as a Logic 1 with normally open contact connected; to invert output to Logic 0, add 1000 to the number LPS-O Line Protection System GE Power Management...
Page 97: Construction
The LPS-O case is constructed from an aluminum alloy. It consists of a main frame with mounting brackets and a front, top and rear cover. The relay may be mounted either vertically or horizontally, and mounting ears may be placed in 6 positions (see Figure 3–1: FRONT AND REAR VIEWS OF THE LPS-O).
Page 98 Figure 3–2: LPS-O OUTLINE – HORIZONTAL An outline drawing is shown in Figure 3–2: LPS-O OUTLINE – HORIZONTAL above, presenting the front, top, and rear views of the horizontal mount LPS-O. This figure provides a panel cutout and drill pattern for mounting the LPS-O.
Page 99 3 HARDWARE DESCRIPTION 3.1 CASE ASSEMBLY Figure 3–3: LPS-O VERTICAL FRONT VIEW GE Power Management LPS-O Line Protection System...
Page 100 DIGITAL OUTPUTS / POWER SUPPLY BOARD MAGNETICS SERIAL EPROM CONNECTOR 960 CPU BOARD FRONT PANEL CONNECTORS BUS CARD DIGITAL INPUTS / SCADA BOARD DSP / ANI BOARD OPTION SWITCH MAGNETICS MODULE Figure 3–4: CIRCUIT BOARD LOCATIONS LPS-O Line Protection System GE Power Management...
Page 101: Electrical Connections And Wiring
The terminal blocks located on the rear cover plate are uniquely identified by a label that is found along the side of each terminal block Each terminal is also identified. Four connectors, PL1, PL2 (A & B), and PL3 are used for serial communication between the LPS-O and a PC or modem. All three communications ports work independently.
Page 102 COMMUNICATIONS INTERFACE DSP / ANI BOARD AC CURRENTS / VOLTAGES MAGNETICS MODULE M A G N E T I C S M O D U L E Figure 3–5: LPS-O SYSTEM BLOCK DIAGRAM LPS-O Line Protection System GE Power Management...
Page 103: Installation
If the equipment is not to be installed immediately, it should be stored indoors in a location that is dry and pro- tected from dust, metallic chips, and severe atmospheric conditions. 3.2.2 ENVIRONMENT The LPS-O should be installed in a clean and dry location, free from dust and excessive vibration, and well lighted to facilitate inspection and testing. 3.2.3 MOUNTING The LPS-O case has been designed for standard rack mounting.
Page 104: Printed Circuit Board Modules
The printed-circuit boards are located inside the case in the positions shown in Figure 3–3: LPS-O VERTICAL FRONT VIEW on page 3–3.
Page 105 NOTE: Relay Power switch must be in the off position before changing switch positions † Default position 1 2 3 4 OPTION SWITCH BUS CARD CO NNECTO R Figure 3–6: INPUT BOARD DIAGRAM GE Power Management LPS-O Line Protection System...
Page 106: Magnetics Module
3.3.6 MAGNETICS MODULE The magnetics module (MGM) contains the input current transformers and voltage transformers. The MGM also contains an EEPROM with factory-stored LPS-O model information (DC voltage rating, AC current rating) and gain-calibration information for the analog channels The relay driver logic located on the output board contains the alarm, BFI, RI, RC, breaker close, key transmit- ter, and phase A tripping contacts (or SCRs).
Page 107: Communications Interface
R S 2 3 2 O P E N R S 4 8 5 Programmable from keypad or communications (refer to Chapters 2 and 12) Figure 3–8: BLOCK DIAGRAM OF THE COMMUNICATIONS MODULE GE Power Management LPS-O Line Protection System...
Page 108: Digital Output / Power Supply Board
Figure 3–9 is a block diagram of the Digital Output/Power Supply board. TRIP RELAY RELAY LATCH RELAY DATA LATCH +12VISO +5VISO +12V ±12VANA 5 V 20 mA CHANNEL INTERFACE POWER SUPPLY Figure 3–9: BLOCK DIAGRAM OF THE DIGITAL OUPUT / POWER SUPPLY LPS-O Line Protection System GE Power Management...
Page 109: Dsp / Ani / Comm / Lui
ANALOG SEQUENCER CONTROL LOGIC M U X VREF REAR COMM REAR COMM ANI CIRCUITRY INTERFACE PL2 INTERFACE PL3 CURRENTS / VOLTAGES Figure 3–10: BLOCK DIAGRAM OF THE DSP / COMM / LUI MODULE GE Power Management LPS-O Line Protection System...
Page 110: Cpu Board
3 HARDWARE DESCRIPTION 3.3.10 960 CPU BOARD The 960 CPU board contains the 960 processor used in the LPS-O, EEPROM for storage of user settings, CAPRAM for storage of fault data and oscillography, and controls data transfer to other modules. The following functions are performed by the 960 CPU board: •...
Page 111 128K x 16 CONTROLS CHIP SELECTS (512K x 16) SIGNALS BYTE ENABLE SIGNALS STATIC SYS-DAT TRANSCEIVER SYS-ADD BUFFER SYSTEM BUS INTERRUPT SYSTEM ADDRESS BUS Figure 3–11: BLOCK DIAGRAM OF THE SYSTEM PROCESSOR (i960 CPU) GE Power Management LPS-O Line Protection System...
Page 112 3.3 PRINTED CIRCUIT BOARD MODULES 3 HARDWARE DESCRIPTION LPS-O Line Protection System GE Power Management...
Page 113: Acceptance/Periodic
OFF. This section is a guide for testing the LPS-O. These tests are not necessary for incoming inspection as the relay was tested at the factory with automated test equipment. The LPS-O is controlled by self-checking soft- ware.
Page 114: Equipment Grounding
FUNCTIONAL TESTS (USER SETTINGS). 4.1.6 GENERAL INSTRUCTIONS 1. Tests are performed using the test mode of the LPS-O which allows viewing of the internal measuring units and functions. The measuring units and functions are actually internal to the software. There are no indi- vidual hardware modules that are responsible for the specific measuring functions.
Page 115: Setting Changes
1. Apply rated DC and wait for relay initialization to complete, indicated by a solid green status LED on the front of the relay. 2. Press the [SET] key: ENTER PASSWORD: is displayed. Enter the Master or Settings level password and press the [ENT] key. GE Power Management LPS-O Line Protection System...
Page 116: Entering Test Mode
4.1.8 ENTERING TEST MODE Before a test can be performed, the LPS-O must be put in test mode and select the function to be tested. The test mode is set as follows: 1.
Page 117: Using Communications (Optional)
Fault Detector. Press [ENT] and the cursor will be placed on the fault detector test. Press [ENT] again and the test is started. When the LPS-O picks up for the selected function it closes the A1 contacts. 7. To exit test mode, press the [ACT] key. Scroll with an arrow key until 5.
Page 118: Hardware Setup
Unit ID, Data Bits, Phone Number, Switch Code, Baud Rate, Stop Bits, and Parity. 3. In the Unit ID field, enter the Unit ID number of the LPS-O and press TAB. The factory default is 0000. 4. At the Baud Rate prompt, select 9600 and press TAB.
Page 119: Relay Setup
Device > Settings or Device > Local Settings from the LPSO-Link menu bar. A procedure for and example of how to change settings with LPSO-Link is provided in Section 11.6: SETTINGS on page 11–18. GE Power Management LPS-O Line Protection System...
Page 120: Entering Test Mode
Device > Settings command for verification. Once uploaded, the current LPS-O settings can be saved to a disk file so that they can be downloaded to the LPS-O when testing is completed. Use the Save command after the device settings have been uploaded.
Page 121: General Relay Tests
4.2.1 T1 – RELAY STATUS AND DISPLAY TESTING The LPS-O Status is reported through the Keypad/Display Interface, the noncritical alarm contact, and the crit- ical alarm contact. If a system error causes relaying functions to cease, the status LED turns red and the criti- cal alarm contact closes.
Page 122: T2 - Digital Output Test
4. Press the [1/Y] key followed by the [ENT] key to turn protection off. Protection must be disabled to continue with the digital output tests. Protection remains off until the outputs are re-enabled. LPS-O Line Protection System GE Power Management...
Page 123 5. Continue selecting each output. When finished with the test, select End Test Mode followed by Do Test. 6. Select Yes to turn protection on. The status LED will turn green indicating normal operation mode. GE Power Management LPS-O Line Protection System...
Page 124 Tx - TRIPPING contacts (programmable) Ax - Alarm contacts (programmable) KTx - Key Transmitter contacts (programmable) Cxy - C Form contacts with one NO/NC contact pair (programmable) CA - Critical Alarm PWR - Power Supply Alarm LPS-O Line Protection System GE Power Management...
Page 125: T3 - Configurable Input Test
Figure 4–1: DIGITAL OUTPUTS TEST CONNECTIONS 4.2.3 T3 – CONFIGURABLE INPUT TEST The LPS-O includes twelve configurable inputs and twenty configurable outputs. These provide great flexibility in applying and testing the relay. The configurable inputs are user-programmed to determine their use. For example, one input could trigger oscillography, while another could select a settings group.
Page 126: T4 - Ac System Input Test
6. Verify the value of IA, IB, or IC depending on connection Y. Verify that the current reading is between 0.9 and 1.1 amps rms. 7. Reduce the test current to zero amps. LPS-O Line Protection System GE Power Management...
Page 127 OUTPUTS CONTINUITY CC10 TESTER CC11 CC12 B21, B22 B6, B7 RATED DC B24, B25 POWER SUPPLY 48, 125, 230 V DC B9, B10 B30, B31 B15, B16 Figure 4–2: CONFIGURABLE INPUT/OUTPUT TEST CONNECTIONS GE Power Management LPS-O Line Protection System...
Page 128 Programmable CONTINUITY TESTER Contact A1 RATED DC POWER SUPPLY 48, 125, 230 V DC Phase Under Test INPUT Y CASE GROUND Terminal Block # SURGE GROUND Figure 4–3: PHASE TO GROUND TEST CONNECTIONS LPS-O Line Protection System GE Power Management...
Page 129: Functional Tests
Remove the test current. A single contact closure is enough to deter- mine that the unit picked up. CAUTION: Before starting to test the LPS-O relay, download all the relay settings to your PC using the LPSO-Link program NOTE: Where appropriate, current levels are defined with two numbers as xx ( yy );...
Page 130: T1 - Fault Detector Test
0.35 (0.07) A rms and apply to the relay. The A1 contact should close. Lower I to 0.15 (0.03) A rms, at which point the A1 contact should open. 6. Reduce I to 0. LPS-O Line Protection System GE Power Management...
Page 131: T3 - Ib Blocking Supervision Test
Since the test current I is single phase, I and I are given by: ------ - (eq. 5–2) ------ - (eq. 5–3) Substituting Equations 5–2 and 5–3 into Equation 5–1 yields: = PUIPT GE Power Management LPS-O Line Protection System...
Page 132: T5 - Ground Directional Block Test
2. Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–7 for a phase AB, BC, or CA fault. Note that the leading phase is 180 degrees out of Phase with the line to which it is shorted. LPS-O Line Protection System GE Power Management...
Page 133 A1 contact should open. 50GPICKUP > 3.6 (0.72) A -------------------------------- - 5. Reduce I to zero. 6. Restore the following settings OVERCURRNT (606) 50G_DIRCNL = YES (607) 50GPICKUP = 10 (2.0) Amps GE Power Management LPS-O Line Protection System...
Page 134 Verify that the 51G times out within the specified time. Table 5–1: TIME-OUT VALUES WHILE REPEATING T8 , A rms 51G time out, s 2.8 to 3.2 0.9 to 1.1 0.6 to 0.8 LPS-O Line Protection System GE Power Management...
Page 135 C A S E G R O U N D Phase INPUT Y INPUT X Under Test Terminal Block Terminal Block S U R G E G R O U N D Number Number Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS GE Power Management LPS-O Line Protection System...
Page 136 7. Set phase A voltage to 76 V and check that contact A1 is closed. Set phase A voltage back to 67 V and check that contact A1 opens. Repeat for phases B and C. 8. Restore these Protection Settings to the values recorded in Step 1. LPS-O Line Protection System GE Power Management...
Page 137 50 = NO (605) 50G = NO (610) 51G = NO OS BLOCKING (1303) BLOCKWHAT = 3 (BLKNONE) NOTE: After the zone reach testing is completed, restore these settings to their pretest values. GE Power Management LPS-O Line Protection System...
Page 138 SETTINGS FOR TEST T11. 6. Reduce the fault current to zero. Note that the trip target indication concurs with the fault. For example, an AB fault is displayed as follows: TRIP AB Z1 “DIST” LPS-O Line Protection System GE Power Management...
Page 139 5. Set the fault current to 6.7 (1.4) amps rms. Reduce the voltages of the faulted phases and check that the A1 contact closes when the voltages are within the limits shown in Table 5–3: FAULT CURRENT PHASE SETTINGS FOR TEST T12. GE Power Management LPS-O Line Protection System...
Page 140 Table 5–4: FAULT CURRENT PHASE SETTINGS FOR T13 I Degrees Volts rms † Displayed Target –25 56 to 63 – –55 65 to 73 195 to 205 –85 56 to 63 – † Reference only LPS-O Line Protection System GE Power Management...
Page 141 TINGS FOR TEST T14. Note that the leading phase angle is 180° out of phase with the line to which it is shorted. (increase VA, VB, and VC to 75 V when ∠ I = –55°) GE Power Management LPS-O Line Protection System...
Page 142 (1204) TRSFMRTYPE = YD1 2. Connect the relay as shown in Figure 5–2: THREE PHASE TEST CONNECTIONS. Set the relay to test mode 14 (Any Zone 1 Phase). The LUI displays: ANY Z1 PHASE ON LPS-O Line Protection System GE Power Management...
Page 143 S U P P L Y 48, 125, 230 V DC C A S E G R O U N D S U R G E G R O U N D Figure 5–2: THREE PHASE TEST CONNECTIONS GE Power Management LPS-O Line Protection System...
Page 144 Z3PHASE = NO (304) Z3P_TIME = 3.0 sec. Z4DISTANCE (401) Z4PHASE = NO (405) Z4TIMERS = YES (406) Z4P_TIME = 5.0 sec. LINEINFO (1204) TRSFMRTYPE = NONE OUTPUTS (2007) A1 = Z1PH; Index 77 LPS-O Line Protection System GE Power Management...
Page 145 ZONE3 trip, such as: TRP AB Z3. This verifies that the third zone tripped. The time for the trip should be in the range 2.9 to 3.1 seconds. 16. Change the voltages of phases A and B to a magnitude of 62 V rms. GE Power Management LPS-O Line Protection System...
Page 146 ZONE4 trip, such as: TRIP AB Z4. This verifies that the fourth zone tripped. The time for the trip should be in the range 4.8 to 5.2 seconds. 20. If not continuing with out-of-step block testing, return all settings to their pretest values. LPS-O Line Protection System GE Power Management...
Page 147 (terminal (terminal block number) block number) C A S E G R O U N D S U R G E G R O U N D Figure 5–3: PHASE-REACH TIMER TEST CONNECTIONS GE Power Management LPS-O Line Protection System...
Page 148 8. Reduce the current in the faulted phase to zero. 9. Repeat the test for phases BC and CA 10. If not continuing with out-of-step trip testing, return settings to their pretest values. LPS-O Line Protection System GE Power Management...
Page 149 14. Decrease VB below 33V and above 28V to enter Inner characteristic. 15. Increase VB above 55V and below 65V to leave Outer characteristic. Check that A1 contact closes when “Leaving” the “Outer” characteristic. 16. Return settings to their pretest values GE Power Management LPS-O Line Protection System...
Page 150 Compare them with the initial settings of the relay, and change to initial values. If the initial settings were saved to a disk file with LPSO-Link before testing, download the file to the relay. LPS-O Line Protection System GE Power Management...
Page 151 PC software setup. It is assumed in what follows that you are familiar with LPS-O testing. If not, refer to Chapter 4: ACCEPTANCE/ PERIODIC TESTS for details. See Chapter 5: FUNCTIONAL TESTS (FACTORY SETTINGS) for tests T1, T4, T5, and T9 (these tests have fixed settings that are not user selectable).
Page 152 5 Amperes and ( yy ) is the value to be used for 1 Ampere rated relays. NOTE: Tripping contacts will operate while the LPS-O is in test mode unless the outputs were disabled by the user.
Page 153 , or I The test current, I , is single phase and applied to I . Thus, the LPS-O should pick up when I is greater than or equal to I 2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–16.
Page 154: T6 - Phase Instantaneous Overcurrent Test
, or I BPICKUP The test current, I , is single phase and applied to I . Thus, the LPS-O should pick up when I is greater than or equal to I BPICKUP 2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–16.
Page 155 (50GPICKUP / 0.7) + 0.5 = [________] A rms and apply to the relay. The A1 contact should close. Lower I to (50GPICKUP / 0.7) – 0.5 = [________] A rms, at which point the A1 contact should open. 5. Reduce I to 0 A. GE Power Management LPS-O Line Protection System...
Page 156 Verify that the times are within ±7% of the value found in the time current characteristic in use. 6.2.9 T9 – UNDERVOLTAGE TEST This test has fixed settings that are not user selectable. See Section 5.1.10: T9 – UNDERVOLTAGE TEST on page 5–8 for testing with factory settings. LPS-O Line Protection System GE Power Management...
Page 157 + 5 V = [________] V and check that contact A1 closes within ±7% of PHOVTMDLY = [________] seconds. Set phase A voltage back to (RATEDVOLTS / 1.732) = [________] V and check that contact A1 opens. Repeat for phases B and C. GE Power Management LPS-O Line Protection System...
Page 158 < ∠ I ∠ 180° – Definitions: = relay reach for Z1PHREACH, Z2PHREACH, Z3PHREACH, or Z4PHREACH ∠ Z = Angle of maximum reach. = Test current for I , chosen for the zone. LPS-O Line Protection System GE Power Management...
Page 159 ∠ I = ∠ T – 30°. angle). V ∠ I = [________]° (Zone 1) ∠ I = [________]° (Zone 2) ∠ I = [________]° (Zone 3) ∠ I = [________]° (Zone 4) GE Power Management LPS-O Line Protection System...
Page 160 Z1PHREACH = [________] Ω (102) (104) Z1P_TIME = 0.0 sec. Z2DISTANCE (201) Z2PHASE = NO Z3DISTANCE (301) Z3PHASE = NO Z4DISTANCE (401) Z4PHASE = NO 2. Record the following values: = [________] V NOM 1 LPS-O Line Protection System GE Power Management...
Page 161 3. Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–7 for the appropriate phases under test. Set the relay to test mode 15 (Any Zone 2 Phase). The LUI displays: ANY Z2 PHASE ON GE Power Management LPS-O Line Protection System...
Page 162 3. Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–7 for the appropriate phase under test. Set the relay to test mode 16 (Any Zone 3 Phase). The LUI displays: ANY Z3 PHASE ON LPS-O Line Protection System GE Power Management...
Page 163 7. Reduce the fault current to zero. Note that the trip target indication concurs with the fault. For example, an AB fault is displayed as: TRIP: AB Z3 "DIST" where “DIST” is the displayed target. 8. Repeat the test for phase BC and CA faults. GE Power Management LPS-O Line Protection System...
Page 164 7. Reduce the fault current to zero. Note that the trip target indication concurs with the fault. For example, an AB fault is displayed as follows: TRIP AB Z4 “DIST” where “DIST” is the displayed target. 8. Repeat the test for phase BC and CA faults. LPS-O Line Protection System GE Power Management...
Page 165 V rms and check that the A1 contact closes. 8. If desired, repeat the test for Zone 2, 3, or 4 by setting the specific zone reach and disabling the zone ele- ments not being tested. GE Power Management LPS-O Line Protection System...
Page 166 6.4 BACKUP PROTECTION TESTS 6 FUNCTIONAL TESTS (USER SETTINGS) LPS-O Line Protection System GE Power Management...
Page 167 7 SPECIFICATIONS 7.1 LPS-O SPECIFICATIONS 7 SPECIFICATIONS 7.1 LPS-O SPECIFICATIONS 7.1.1 DESCRIPTION ELECTRICAL RATINGS CONTACT RATINGS Rated Frequency: 50 to 60 Hz Trip Outputs (T1 to T6) Continuous Rating: Rated Voltage: 100 to 120 V AC Make and Carry: 30 A (per ANSI C 37.90)
Page 168 Range: 10 to 99 seconds Resolution 0.01 sec. Depth: 13.63" (347 mm) Weight: The standard rack-mounted COMPENSATION FACTOR unit weighs 23 pounds. Range: 1.0 to 7.0 SPECIFICATONS ARE SUBJECT TO CHANGE WITHOUT NOTICE LPS-O Line Protection System GE Power Management...
Page 169 8 LOCAL USER INTERFACE 8.1 INTRODUCTION 8.1.1 DESCRIPTION The Local User Interface (LUI) for the Line Protection System (LPS-O) consists of a 4-line liquid crystal display (LCD), a keypad, and trip and status LEDs. There a few conventions used with the keypad and display that will be mentioned periodically in this section.
Page 170 (see 8.2.4: REQUEST PRESENT VALUES on page 8–20). The user cannot use the arrow keys to scroll through the present values. Both the fault data display and the Present Value display are stopped by one of the following: TRIP, FAIL/ WARN message or a key being pressed. LPS-O Line Protection System GE Power Management...
Page 171 Target Reset command. If the relay restarts or is powered down and up, the trip indicator will be remembered and redis- GE Power Management LPS-O Line Protection System...
Page 172 Pressing the [SET] key prompts the user for the Settings level password. If the password is not valid, the mes- sage PASSWORD INVALID will be displayed on the bottom line of the display. The [CLR] key to deletes this error message and prompts for the password again. LPS-O Line Protection System GE Power Management...
Page 173 When a group is finally selected, the display will have SETTINGS on the first line and the first three categories on the next three lines. The cursor is positioned on the second line. A few things should be noted at this point: GE Power Management LPS-O Line Protection System...
Page 174 SETTING or MASTER level and communications must not be in the process of changing settings. If the check fails then an error message is displayed and the setting is not changed. LPS-O Line Protection System GE Power Management...
Page 175 As soon as the user has made the first valid setting change, the LED which indicates LPS-O status starts blink- ing, to remind the user to save the settings after editing them. It continues to blink until the user saves the set- tings by pressing [END] or the relay times out (15 minutes).
Page 176 It is possible, however, to view settings with CONTROL or default privilege level. Viewing/Editing of General Settings and the LPS-O response to key selection is similar to that described in Section 8.1.6: EDIT PROTECTION SETTINGS on page 8–5.
Page 177 The [ACT] key is used to select Action Commands. All Action Commands except LUI Test require either CON- TROL or MASTER privilege level. The KEYPAD/DISPLAY INTERFACE Test can be performed with any privi- lege level. The PASSWORD ENABLE/DISABLE command and all relay tests require MASTER privilege level. GE Power Management LPS-O Line Protection System...
Page 178 The relay will ask whether to disable the outputs. Press the [3/N] key for NO or the [1/Y] for YES followed by the [ENT] key. If NO is selected, CANCELED is displayed and no LPS-O action occurs. If YES is selected, two...
Page 179 The relay will then ask whether to trip the selected breaker. Select [3/N] (NO) or [1/Y] (YES) followed by the [ENT] key. If NO is chosen, CANCELED appears on the display and no LPS-O action occurs. If YES is chosen, two checks are performed: for the CONTROL or MASTER privilege level and whether communication is in the process of performing an action.
Page 180 The relay will ask whether to close the selected breaker. Press [3/N] (NO) or [1/Y] (YES) followed by the [ENT] key. If NO is selected, CANCELED appears on the display and no LPS-O action occurs. If YES is selected, the checks are performed for the control or master privilege level and whether Communication is in the process of performing an action.
Page 181 LED stays RED and the ACT command menu is displayed. If any other key is pressed, an error message is generated and [CLR] key must be pressed to clear the message. The available LPS-O tests and their corresponding numbers are: 1: End Test Mode...
Page 182 The cursor will be stationed on the third line. If [1/Y] (YES), [ENT] is entered, protection is turned ON. The LED indicating LPS-O status turns GREEN (if performing digital output test was the only cause for it being RED) and the ACT command menu is displayed with the cursor positioned on Dig output test. The above prompt will be also displayed when the user tries to exit the digital output test category without ending the test.
Page 183 The user is prompted to select the settings which used during playback. If [1/Y] is pressed followed by [ENT] key, the relay settings currently in effect will be used during playback. If [2] is pressed followed by [ENT], the settings stored with the oscillography data will be used. GE Power Management LPS-O Line Protection System...
Page 184 The word ON will be displayed as long as playback lasts. The only data files that can be uploaded to the relay are OSC files downloaded from another LPS-O, LPS-D, or ALPS model relay, or a binary or ASCII Commtrade file from another source (Commtrade details are explained below).
Page 185 DECREASE only (depending on the limit reached). Pressing the other arrow will not affect the contrast. An error message will be displayed if the data entry keys are used. CONTROL or MASTER privilege is required to use this command. GE Power Management LPS-O Line Protection System...
Page 186 STATUS: FAIL. If there are no critical failures but there is a non-critical failure, the display will be STATUS: WARN. Even if there are no hardware failures, there may still be miscellaneous status in which case the display will be STATUS: MISC. LPS-O Line Protection System GE Power Management...
Page 187 Distance: zzz.z MI/KM – distance to fault occurrence Relay Op Time: xxxxxx – relay operating time in msec. Brkr Op Time: xxxxxx – breaker opening time in msec. Fault Types: (phases A-B) (phases B-C) (phases C-A) (3-phase) GE Power Management LPS-O Line Protection System...
Page 188 The number of the contact converter, the name of the digital input assigned to the contact converter and the status of the converter are displayed on the same line. Three contact converter status are displayed at a time. CC STATUS 1.52B_1A : 0 2.52B_1B : 1 3.52B_1C : 0 LPS-O Line Protection System GE Power Management...
Page 189 8.2 INFORMATION NOTE: 1. The LPS-O has 12 contact converters. 2. The contact converter is OPEN if the status is a ‘0’. The contact converter is CLOSED if the status is a ‘1’. 3. If no digital input is assigned to a contact converter, its status information will still be displayed along with the contact converter number but the name will be blank.
Page 190 Breaker #2 open • Remote communication login failure • Breaker #2 closed • Passwords changed • Fuse failure alarm ON • Outputs enabled • Fuse failure alarm OFF • Outputs disabled • Key transmitter ON LPS-O Line Protection System GE Power Management...
Page 191 VIEW passwords are displayed. All passwords can be viewed with master privilege level. If the relay is set for MASTER privilege level, use the arrow keys to view the second pair of passwords. GE Power Management LPS-O Line Protection System...
Page 192 If it is not possible, the first 20 characters of the sta- tion ID are displayed on the third line and the rest are displayed on the fourth line. 8.2.10 REQUEST LPS-O MODEL/VERSION This category is used to display the Model and Version numbers for the relay.
Page 193 LUI KEY ERROR The LUI received an invalid key code from the keyboard (hardware error). ACT INVALID NOW The current action is invalid because the setting’s CRC code is in error. GE Power Management LPS-O Line Protection System...
Page 194 8.3 ASCII INTERFACE 8.3.1 DESCRIPTION The pin-to-pin connections for the cable connectIng the ASCII port to plug PL2 on the back of the LPS-O are shown in Figure 8–2: MODEM CABLE. Virtually any standard communications package on a PC with a serial interface may be used.
Page 195 2. Remove four thumbscrews holding the plastic cover in place and lay aside with plastic cover. 3. Turn the power switch off on the front panel. 4. Remove DC power from the LPS-O. WARNING: Completely power down the relay by disconnecting the control DC power and by removing all voltage inputs to the rear terminals prior to opening the unit.
Page 196 8 LOCAL USER INTERFACE Hayes-compatible command string to the modem located at the PC. The LPS-O does not send any configura- tion commands to its modem. Both the relay modem and the PC modem must be uniquely configured to permit logging into and communicating with the relay using LPSO-Link software.
Page 197 An LPSO-Link setting establishes the baud rate which must match the baud rate setting of the LPS-O. LPSO- Link will then set the specified PC serial port (COM1, COM2) to the proper baud rate, parity, data bits, and stop bits.
Page 198 R E M O T E C O M M U N I C A T I O N S F R O M P L - 1 M O D U L E TO PC PL-1 N U L L M O D E M C A B L E Figure 8–5: NULL MODEM CABLE FOR PORT PL1 LPS-O Line Protection System GE Power Management...
Page 199 Enable (Smart) Comm. Std. (@1200 bps) Bell 212A (B1) Bell 212A (B1) Response to DTR Ignore DTR (&D0) Ignore DTR (&D0) Fall Back to 4800Bd AT#F1 Pulse Dial Ratio 39%Mk/61%Bk (&P0) 39%Mk/61%Bk (&P0) GE Power Management LPS-O Line Protection System...
Page 200 8.4 REMOTE COMMUNICATION INTERFACE 8 LOCAL USER INTERFACE LPS-O Line Protection System GE Power Management...
Page 201 The name of the board. This is found on the component side of the printed circuit board with the assembly number and revision. • The assembly number of the LPS-O is an eight-digit number with a letter inserted between the fourth and fifth digit and with a group-identification suffix, such as 0215B8011G001. •...
Page 202 3. The third level indicates system status errors that are due to power system errors (Trip Circuit Open) or are caused by an LPS-O command that disables the relay (Disable Outputs). They are indicated by the closing of the non-critical alarm contact, a red status LED, or by the opening of the critical alarm contact. However, nothing is displayed until the Information Status command is issued.
Page 203 960 CPU Non-critical, turn off optocouplers pilot protection Digital Output Circuitry Loop-back test 960 CPU Critical, restart Trip Circuit Continuity Bit read via bus 960 CPU Non-critical Operator initiated, visual feedback 960 CPU Non-critical GE Power Management LPS-O Line Protection System...
Page 204 9.3 TROUBLESHOOTING 9.3.1 DESCRIPTION Troubleshooting the LPS-O requires the following three steps: 1. Determine the relay status as either critical, non-critical, or miscellaneous. 2. Use the list of failure and warning codes or the Information Status command to determine the defective board(s).
Page 205 The Fail message indicates the nature of the critical failure. It remains on the dis- play until a key is pressed or until the LPS-O restarts successfully with no self-test failures. See Section 9.3.7: SERVICE SYSTEM STATUS FAILURES on page 9–6 for the list of mnemonic failure codes and their mean-...
Page 206 The non-critical failure message has the format WARN xxx. The xxx field is a numeric code that indicates the nature of the failure. The WARN message remains on the display until a key is pressed or until the LPS-O restarts successfully with no self-test failures. See Section 9.3.7 SERVICE SYSTEM STATUS FAILURES for the list of warning codes and their meanings.
Page 207 WARN-COMM REAR PORT #1 FAIL • FAIL-DSP 960-DSP INTERRUPT • WARN-COMM REAR PORT #2 FAIL • FAIL-RUN TIME DPRAM CHECKSUM • WARN-COMM LUI KEYPAD ERROR • FAIL-DI SERIAL EEPROM • STAT-DI ERROR CORRECTED GE Power Management LPS-O Line Protection System...
Page 208 9.3 TROUBLESHOOTING 9 SERVICING LPS-O Line Protection System GE Power Management...
Page 209 The ALPS-Test program is designed to be used with both the ALPS and LPS series of relays. ALPS-Test is used to generate test data for the measuring units in the LPS-O relay for the settings specified by the user. This data can be used to validate your test data.
Page 210 10 ALPS-TEST PROGRAM Figure 10–2: FILE AND EDIT MENUS Note: Settings groups M1G, MTG, M3G, and M4G are NOT applicable to the LPS-O relay. Ignore these set- tings groups while performing tests. Figure 10–3: ADDITIONAL ALPS-TEST MENUS 10.1.3 STARTING PROGRAM AFTER THE FIRST TIME Start the program as in the previous section.
Page 211 Select the Help button from the Enter Value dialog box. A help screen is displayed describing how to use this dialog box. GE Power Management LPS-O Line Protection System...
Page 212 Click on a Select button from one of the test dialog boxes (M1 Phase Units – Zone 1 is shown below) for an input quantity that has a continuous range. Figure 10–5: INPUT TEST DIALOG BOX: M1 PHASE UNITS – ZONE 1 For Test Current (amps), the following dialog box is displayed: LPS-O Line Protection System GE Power Management...
Page 213 The following dialog box is displayed for this test. The values are the default values used when the user selects New Test File from the File menu. Figure 10–7: M1 PHASE UNITS – ZONE 1 DIALOG BOX GE Power Management LPS-O Line Protection System...
Page 214 10.2.8 M4 PHASE UNITS – ZONE 4 The following dialog box is displayed for this test. The values are the default values used when the user selects New Test File from the File menu. LPS-O Line Protection System GE Power Management...
Page 215 The following dialog box is displayed for this test. The values are the default values used when the user selects New Test File from the File menu. Figure 10–11: MOB PHASE UNIT DIALOG BOX GE Power Management LPS-O Line Protection System...
Page 216 Figure 10–12: FILE MENU Select New Test File from the File menu. This will create a new test which is indicated by the GE logo being displayed and the test name Untitled x in the title bar where x is a digit corresponding to the number of new documents created.
Page 217 Click the No button. The file is not saved. The window is cleared from the screen thus closing the test. • Verify that the file does not contain the modified values by looking at the file with a text editor. GE Power Management LPS-O Line Protection System...
Page 218 Select Save Output As from the File menu. Select a drive, path, and file name from the dialog box to save the test output. Click on OK and the file is saved. LPS-O Line Protection System GE Power Management...
Page 219 If you have not saved the current file, select Exit from the File menu. A message box is displayed asking if you want to save the modified test. Click on OK. The program saves the file and exits. GE Power Management LPS-O Line Protection System...
Page 220 To use the output that is on the clipboard: • Start Windows Application. • Select Paste Special from the Edit menu. There is one item on the clipboard, a bitmap. • Select the bitmap and paste into the current document. LPS-O Line Protection System GE Power Management...
Page 221 Select the Status Bar menu item. The status bar is removed from the display. Select the Status Bar menu item again. The status bar is displayed. GE Power Management LPS-O Line Protection System...
Page 222 There is one tool followed by a separator bar and the Setup menu item. • The tool's name is correct. Click on the tool. • Verify that an error message is displayed indicating that the program couldn't be started. Select the Setup menu item again. LPS-O Line Protection System GE Power Management...
Page 223 Click on the OK button. Pull down the Tools menu. • Verify that there are two tools and they are in the correct order. • The two tools are followed by a separator bar and the Setup menu item. GE Power Management LPS-O Line Protection System...
Page 224 Select the Arrange Icons menu item. The icons are rearranged across the bottom of the screen. 10.7.5 VIEWING MULTIPLE TESTS When more than one test file active in the program. Pull down the Window menu. The menu shows all the active test windows. LPS-O Line Protection System GE Power Management...
Page 225 Figure 10–19: ABOUT ALPS_TST DIALOG BOX Click on the More Information button. Information about who to contact is displayed. Click on OK. The dialog box is cleared from the screen. GE Power Management LPS-O Line Protection System...
Page 226 10.8 HELP MENU 10 ALPS-TEST PROGRAM LPS-O Line Protection System GE Power Management...
Page 227 From this window, you can jump to more specific information. You can also press the F1 key on the key- board to get the Help contents. Help information on any dialog box could be obtained by clicking the Help but- ton in that dialog box. GE Power Management LPS-O Line Protection System...
Page 228 RS232 port; for connection via the LPS-O RS485 port, an RS485/RS232 converter is required. If you wish to connect to your LPS-O over a dial-up modem, the relays should be con- nected as follows: •...
Page 229 P R O T E C T I O N R E D C H E C K S T A T U S R E D C H E C K S T A T U S Figure 11–1: SUPPORTED ARCHITECTURE GE Power Management LPS-O Line Protection System...
Page 230 11.2.4 SOFTWARE INSTALLATION Microsoft Windows must be installed on your PC before proceeding with LPSO-Link Installation. Installation of the LPS-O software suite will install all of the following software packages: LPSO-Link, ALPS-Test, and Xpres- sion Builder. a) INSTALLING FROM PRODUCTS CD To install LPSO-Link from the Products CD: 1.
Page 231 3. From the menu on the left of the page, click Software. This will display a list of softaware indexed alpha- betically by product. Click LPS Line Protection System from the list. 4. The Software page for the LPS-O relay will be displayed as shown in Figure 11–3: LPS-O SOFTWARE PAGE below.
Page 232 5. Click on ALPS/LPS PC Software. A File Download dialog box will appear. Choose the Save This Pro- gram to Disk option and choose or create an appropriate directory to load the LPS-O software. The file ALPSPC.EXE will be placed in this directory.
Page 233 10. Setup will prompt for a directory to install the LPS-O software. Click Browse to choose an appropriate directory or Next to accept the default directory C:\LPSO. 11. Setup will then prompt for a Program Folder for the LPS-O software. Enter a folder or choose the default ALPS PC Programs and click Next.
Page 234 LPSO-Link and related applications. b) INSTALLING FROM THE INTERNET To install the software from the GE Power Management web site enter the following URL in your Web browser: www.ge.com/indsys/pm The home page is the same as the Products CD shown in Figure 11–2: GEPM PRODUCTS CD PRIMARY...
Page 235 Window and Help. The items in each menu change when a device is connected. For example, Log will not have the current item now but will display it when the device is connected. GE Power Management LPS-O Line Protection System...
Page 236 Log is on or off, part five and six indi- cate the Caps Lock and Num Lock respectively. Figure 11–8: LPSO-LINK STATUS BAR LPS-O Line Protection System GE Power Management...
Page 237 11.4.2 COM PORT SETUP For any operation with the LPS-O device, it is essential that the PC and the device have a physical link estab- lished between them. This physical link could be an RS232 line or an RS485 line. If required, dial-up modems can be used for this connection.
Page 238 The host machine need to be configured with the printer setup. The Printer setup is performed from the SupportFunc menu. Choose the Host Setup > Printer item from the Support Func pull down menu. LPS-O Line Protection System GE Power Management...
Page 239 11.4.5 DEVICE SETUP More than one LPS-O device could be connected to the host machine on the physical link. But, at any given time, LPSO-Link can communicate with a single device. It is possible that each of these devices are configured with various communication parameters: for example, telephone number, baud rate, etc.
Page 240 These parameters take effect from the next time you make a connect request to the device specified. Choose the OK button to save these parameters for the specified device. Alternatively, choose the Cancel button to quit the dialog box without updating the device setup. LPS-O Line Protection System GE Power Management...
Page 241 Delete button. A message box requesting the confirmation for the deletion appears. Choose the Yes button to proceed with the deletion. Choose the No button to quit deleting the device from the list. GE Power Management LPS-O Line Protection System...
Page 242 If you logout from a device when a dial-up modem is being used, a hang-up request need to be explicitly made. In fact, you can directly ask for hang-up without logging out of a device. LPSO-Link will do the necessary logout before hang-up. LPS-O Line Protection System GE Power Management...
Page 243 Even if the other device is not on the same line, LPSO-Link will automatically hang-up this line and dial the new number to connect to the new device you selected. GE Power Management LPS-O Line Protection System...
Page 244 11.6 SETTINGS 11.6.1 DESCRIPTION The LPS-O device performs protection functions in a power system according to the device settings values. The settings are grouped into categories. The LPS-O has four settings groups. LPSO-Link provides for upload- ing the settings from the device, modifying and these modified settings can either be downloaded to the device or stored in a local file.
Page 245 If you are already connected to a device, • From the Device menu, choose Settings. • From the drop down menu, choose Get Settings • Choose Load Local settings from the pop up menu. GE Power Management LPS-O Line Protection System...
Page 246 LPSO-Link will provide a facility to view the Calibration parameters in the device. User will also be able to mod- ify these parameters and download them to the device. Selecting the Calibrate item from the Settings menu will post the following dialog box. LPS-O Line Protection System GE Power Management...
Page 247 The passwords are downloaded to the device for change. Any error from the device will be notified to you. 11.7.5 RESET DATA This item helps you to reset specific data in an LPS-O relay. GE Power Management LPS-O Line Protection System...
Page 248 11.7.8 OPEN BREAKER Choose this menu item to open the breaker, this will prompt you with the confirmation message box. Click Yes to open the breaker. The LPS-O will send command to the device to open the breaker. 11.7.9 CLOSE BREAKER Choose this menu item to close the breaker.
Page 249 11.8.1 DESCRIPTION Different types of information stored in a LPS-O device can be fetched and viewed in a desired report format. LPSO-Link facilitates the acquisition of the information and presents it to you. You have the facility to view the reports, print the reports, or to store them for viewing or printing later.
Page 250 A choice of DAF or COMTRADE file formats is available. The .DAF file is formatted for use with the GE-DATA oscillography program. The .OSC format creates a binary COMTRADE file that can be viewed with any binary COMTRADE reader. You will be prompted for a name of this report when you close the fault report window, or, choose Report from the menu bar and select Save or Save As.
Page 251 This helps you in picking the right report file. Select the file name, directory and the source from where you want to read the report. The report will be displayed and you can print the report. GE Power Management LPS-O Line Protection System...
Page 252 When you are viewing multiple reports and choose the print item, LPSO- Link will print the report in the active window. So, make sure the report you want a hard copy of is in the active window. LPS-O Line Protection System GE Power Management...
Page 253 Reports and Settings can be stored on the secondary storage by you, where as up to 100 log files are stored by LPSO-Link. It might be necessary to make an archival of some of these files. LPSO-Link supports this through the Archival option. The same option can be used to retrieve these backups. GE Power Management LPS-O Line Protection System...
Page 254 Since you would not want to destroy the log existing with the same name, you can give a name of your choice, but with an extension of .log, that is, you can name it test.log. For Report and Settings, you can select the directory and name of your choice. LPS-O Line Protection System GE Power Management...
Page 255 12 ASCII COMMUNICATIONS 12.1 INTRODUCTION 12.1.1 DESCRIPTION The LPS-O has a built-in ASCII interface which will communicate using any terminal emulator, such as Pro- comm Plus or Microsoft Windows Terminal. The user must initiate all commands by typing them. Some of the commands have abbreviations which are represented by the capital letters in a command.
Page 256 LPSO-Link and to the Enter New Password new password; ASCII; MMI passwords are password Re-enter New Password new password not affected by this being Password changed or INVALID; password not command changed changed LPS-O Line Protection Relay GE Power Management...
Page 257 0.00 Press ENTER to Continue List of Fault Events: TIME EVENT 16:32:23.7025 Oscillography Capture 16:32:23.7041 RMS Oscillography Data Press Y to get oscillography data Press ESC to quit Press Any Key to continue GE Power Management LPS-O Line Protection Relay...
Page 258 Enter END to end test letter output is tested To see list of Digital Outputs enter H To quit press ESC Enter your choice: 4 Digital Output #4 is Activated Turn Protection on? (Y/N): LPS-O Line Protection Relay GE Power Management...
Page 259 Enter new Station ID (max. 32 characters): NEW current ID; NEW STATION ID FEEDER ID or Enter new Line ID (max. 32 characters): NEW ENTER to keep FEEDER ID current ID; enter Are you sure? (Y/N): y letter GE Power Management LPS-O Line Protection Relay...
Page 260 Output Contact #18, C2=0 DATE Displays the current LPS- SETTINGS Do you want to change date? (Y/N): Enter letter Y or O date Enter new date (mm/dd/yy): N; 6 digit date Command is executed code LPS-O Line Protection Relay GE Power Management...
Page 261 2; Number of stop bits is 1 Enter number of stop bits (1 or 2): Enter 0, 1, or 2; Save changes? (Y/N): Enter Y or N Ends the session VIEW None GE Power Management LPS-O Line Protection Relay...
Page 262 To go back to previous menu press B between 1 to 20, To quit press ESC the letters C and B, or press ESC Enter your choice: 1 Press ENTER or Press ENTER to continue or ESC to quit LPS-O Line Protection Relay GE Power Management...
Page 263 13 XPRESSION BUILDER 13.1 INTRODUCTION 13.1.1 OVERVIEW The LPS-O relay has been designed to allow flexibility in the operation of contact converter inputs and contact outputs. The inputs and outputs are not hard-wired to any function; the functions of each input and output are defined by a software file which is downloaded to the relay as a part of each setting group.
Page 264 13.1 INTRODUCTION 13 XPRESSION BUILDER Figure 13–1: GEPM PRODUCTS CD PRIMARY SCREEN LPS-O Line Protection System GE Power Management...
Page 265 3. From the menu on the left of the page, click Software. This will display a list of softaware indexed alpha- betically by product. Click on LPS Line Protection System from the list. 4. The Software page for the LPS-O relay will be displayed as shown in Figure 13–2: LPS-O SOFTWARE PAGE below.
Page 266 Finish. The software is now installed. b) INSTALLING FROM THE INTERNET To install the software from the GE Power Management web site enter the following URL in your Web browser: www.ge.com/indsys/pm The home page is the same as that shown in Figure 13–1: GEPM PRODUCTS CD PRIMARY SCREEN on page 13–2.
Page 267 D input is where the data bit to be stored is applied. The T or clock input controls the flip-flop. It determines whether the data on the D input line is recognized (clocked) or ignored. If the T input line is high (binary 1), the GE Power Management LPS-O Line Protection System...
Page 268 150 ms after the trailing edge of the first output pulse. The pickup and dropout timers are independent of each other. O U T PU = 300 DO = 250 Figure 13–6: PICKUP/DROPOUT TIMER LPS-O Line Protection System GE Power Management...
Page 269 If the O output line is low (binary 0), then the accumulated count is less than the set value. A transition from low (binary 0) to high (binary 1) on the R input line resets the counter to zero. Figure 13–8: COUNTER GE Power Management LPS-O Line Protection System...
Page 270 MANLKT Configurable Input 1 CNFDI1 Configurable Input 2 CNFDI2 Configurable Input 3 CNFDI3 Configurable Input 4 CNFDI4 Configurable Input 5 CNFDI5 Configurable Input 6 CNFDI6 Configurable Input 7 CNFDI7 Configurable Input 8 CNFDI8 LPS-O Line Protection System GE Power Management...
Page 271 The input flags available for assignment to user defined logic are shown in the following tables. Note that Xpression Builder may offer a number of choices that are not available with the LPS-O relay. Use only the inputs listed in the tables in this section.
Page 272 Any Trip Bus TRPBUS Any Phase Overvoltage Pickup OVRVPU Block Reclose Initiate BLK-RI Manual Close In Progress CLS IP Breaker Close BKRCLS Phase A Overvoltage AVOVR Phase B Overvoltage BVOVR Phase C Overvoltage CVOVR LPS-O Line Protection System GE Power Management...
Page 273 Fault ID: Neutral Involved DAFLTN DMA Overrun DMAOVR Trip Circuit #1 Voltage Monitor Status T1TC Trip Circuit #2 Voltage Monitor Status T2TC Trip Circuit #3 Voltage Monitor Status T3TC Trip Circuit #4 Voltage Monitor Status T4TC GE Power Management LPS-O Line Protection System...
Page 274 T1 to T6 Auxiliary Contacts A1 to A12 Control Contacts C1 to C2 High Speed Channel Contacts KT1 to KT4 User Defined Trip CONFTRIP User Defined Oscillography Capture CONFOSC User Defined Non-Critical Alarm NC Alarm LPS-O Line Protection System GE Power Management...
Page 275 52_b contacts. Other inputs can come from external contacts, other relay outputs, or the feedback of one of the LPS-O outputs to an input. The list of available con- tact converter input assignments can be found in Table 13–2: CONTACT CONVERTER INPUT FLAGS on page 13–8.
Page 276 (logic 1). An inverted input will require a pickup voltage presence to be considered a low input (logic 0). Figure 13–10: CONTACT CONVERTER INPUTS (CC) Figure 13–11: INVERTED CC INPUTS LPS-O Line Protection System GE Power Management...
Page 277 The next step is to start connecting the inputs to the Boolean operators and to the output gates. To use straight line connections, select the Connection icon as shown in Figure 13–15: STRAIGHT CONNECTION ICON. To use orthogonal line connections, select the Orthoconnection icon as shown in Figure 13–16: ORTHO-CON- GE Power Management LPS-O Line Protection System...
Page 278 (BPLTRIP), the external configurable input (CNFDI1), the internal block supervision current flag (IB), the Boolean operators (OR, AND, and P/D Timer), and the output contact (A1). LPS-O Line Protection System GE Power Management...
Page 279 13 XPRESSION BUILDER 13.4 CREATING XPRESSION BUILDER LOGIC Figure 13–17: SAMPLE BREAKER FAILURE LOGIC GE Power Management LPS-O Line Protection System...
Page 280 13.4 CREATING XPRESSION BUILDER LOGIC 13 XPRESSION BUILDER LPS-O Line Protection System GE Power Management...
Page 281 The remote factory passwords for the different privilege levels are •master! (master) •actions! (actions) •setting! (setting) •view! (view) The remote passwords stored in the relay may be viewed, in encoded format, via the LUI. GE Power Management LPS-O Line Protection System...
Page 282 • Verify the LPSO-Link program is selected for the comm port you are using on your PC or laptop • Verify the cable you are using is a null modem cable • Verify the protocol of the relay comm port you are using is set for GE-Modem. Note: rear port PL2A is factory set for ASCII.
Page 283 Saving data in the DAFF format creates an OSC, DAF, and REP file. The OSC file is used to play- back a waveform to the relay. The DAF file is used by the GE-DATA program to view the waveforms and flags within the relay. The REP file contains the fault report and settings in the relay at the time of the fault.
Page 284 A.1 FREQUENTLY ASKED QUESTIONS APPENDIX A LPS-O Line Protection System GE Power Management...
Page 285 APPENDIX B B.1 TABLES APPENDIX B TABLES AND FIGURESB.1 TABLES B.1.1 LIST OF TABLES : 1–1 ORDER CODES FOR THE LPS-O......................1-3 ABLE : 1–2 LPS-O MEASUREMENT FUNCTIONS ....................1-5 ABLE : 1–3 LPS-O DEFAULT CONTACT CONVERTER ASSIGNMENTS..............1-6 ABLE : 1–4 LPS-O DEFAULT OUTPUT CONTACT ASSIGNMENTS.................
Page 286 IGURE 2–15: VERY INVERSE CURVE ........................2-30 IGURE 2–16: EXTREMELY INVERSE CURVE ......................2-31 IGURE 3–1: FRONT AND REAR VIEWS OF THE LPS-O ..................3-1 IGURE 3–2: LPS-O OUTLINE – HORIZONTAL ......................3-2 IGURE 3–3: LPS-O VERTICAL FRONT VIEW......................3-3 IGURE 3–4: CIRCUIT BOARD LOCATIONS ......................
Page 287 10–19: ABOUT ALPS_TST DIALOG BOX....................10-17 IGURE 11–1: SUPPORTED ARCHITECTURE......................11-3 IGURE 11–2: GEPM PRODUCTS CD PRIMARY SCREEN ..................11-5 IGURE 11–3: LPS-O SOFTWARE PAGE ......................... 11-6 IGURE 11–4: LPS SOFTWARE INSTALLATION WELCOME SCREEN ..............11-7 IGURE 11–5: SETUP OPTIONS DIALOG BOX ......................11-7 IGURE 11–6: LPSO-LINK APPLICATION WINDOW ....................
Page 288 B.2 FIGURES APPENDIX B LPS-O Line Protection System GE Power Management...
Page 289 14. OS TRIPPING (1401-1413) NUM_OP (0407) 15. NONCRIT_AL (1501-1508) 5. INPUT (0501) 16. OUTPUTS (1601-1626) (0502) (0503) (0504) (0505) (0506) (0507) (0508) (0509) CC10 (0510) CC11 (0511) CC12 (0512) Figure C–1: SET KEYPAD MENU GE Power Management LPS-O Line Protection System...
Page 290 19. IB Detector 4. Close Breaker 20. GND Dir Trip 5. Relay Test 21. GND Dir Block 6. Channel Test (not applicable to LPS-O) 22. Fault Detector 7. LUI Test 23. Ren Op Detector 8. Digital Output Test 24. Out of Step Blk 1.
Page 291 EVENT #1 #150 A5 to A8, CA 7. Comm Password VW, CTL, SET, MAS 8. Station/Line ID Station ID Line ID 9. LPS Model/Version Model Version 10. OSC Snapshot Figure C–3: INF KEYPAD MENU GE Power Management LPS-O Line Protection System...
Page 292 C.1 KEYPAD MENUS APPENDIX C LPS-O Line Protection System GE Power Management...
Page 293 24 months from date of ship- ment from factory. In the event of a failure covered by warranty, GE Multilin will undertake to repair or replace the relay providing the warrantor determined that it is defective and it is returned with all transportation charges prepaid to an authorized service centre or the factory.
Page 294 D.1 WARRANTY INFORMATION APPENDIX D LPS-O Line Protection System GE Power Management...
Page 295 ............. 4-10 drawings ..............4-1 see DSP / ANI / COMM/ LUI MODULE entering test mode ............. 4-8 APPLICATIONS OF THE LPS-O ........1-4 exiting test mode ............4-8 ARROW KEYS ............. 8-3 general instructions ........... 4-2 ASCII COMMAND LIST ..........12-2...
Page 296 ............2-5 magnetics module ............3-10 interface board ............3-11 system processor .............3-15 LPS-O modem ............8-29 BLOCKWHAT (Protection Setting 1303) ....1-11, 2-24 modem commands .......... 8-28, 8-31 BLOCKZ1 (Protection Setting 1304) ....1-11, 2-25 modem connections/settings ........8-27 BLOCKZ2 (Protection Setting 1305) ....
Page 297 ......5-19 with LPSO-Link ............11-21 phase-to-phase test connections ........ 5-7 ENABLE/DISABLE PASSWORDS ....... 8-17 phase-to-phase zone reach ........5-10 ENCRYPTION references (user settings) .......... 6-2 password encryption on the LPS-O ......8-24 GE Power Management LPS-O Line Protection System...
Page 298 ITPICKUP (Protection Setting 501) ......2-14 description ..............2-3 IXTPHASEA (General Setting 404) ........2-8 editing with keypad ............ 8-8 IXTPHASEB (General Setting 405) ........2-8 equipment duty ............2-7 IXTPHASEC (General Setting 406) ........2-8 guide ...............2-44 LPS-O Line Protection System GE Power Management...
Page 299 ..............8-1 rear view ..............3-1 editing protection settings .......... 8-5 servicing ..............9-1 END key ..............8-7 LPS-O FUNCTIONAL TESTS ........6-1 ENT key ..............8-3 LPSO-LINK KEYPAD TESTS ............4-9 archive ............11-27, 11-28 KT1 (Protection Setting 1621) ........2-28 breaker health report ..........
Page 300 NUMFAULTS (General Setting 301) ......2-7 MEASUREMENT FUNCTIONS ........1-5 NUMFLTS (General Setting 301) ......... 1-12 MESSAGES description ..............8-3 on the LPS-O ............8-3 system failure ............8-4 METERING ..............1-16 OPERATING TIME CHARACTERISTIC ......2-11 METERING/CLEAR KEY (CLR) ........8-2 diagram ..............
Page 301 ............... 2-18 (1406) OUTER ............2-27 PHASE ROTATION ............2-3 (1407) MIDDLE ............2-27 PHASE TO GROUND TEST CONNECTIONS ....4-16 (1408) INNER ............2-27 PHASEOVER (Protection Setting 702) ......2-18 (1409) TLOS1PU ............2-27 GE Power Management LPS-O Line Protection System...
Page 302 (601) 50 ..............2-15 RELAY TESTS ............11-22 (602) 50_DIRCNL .............2-16 general ..............4-9 (603) 50PICKUP ............2-16 with Local User Interface .......... 8-12 (604) 50PICKUPFF ...........2-16 REMOTE COMMUNICATION INTERFACE ....8-27 (605) 50G ..............2-16 LPS-O Line Protection System GE Power Management viii...
Page 303 REMOTE OPEN DETECTOR line overload ............. 7-2 description ............1-9, 1-10 line pickup ..............7-2 logic diagram ..........1-10, 2-21 of the LPS-O ............. 7-1 protection settings ........... 2-21, 2-22 protection scheme logic timers ........7-2 selecting ..............2-22 protections schemes ..........7-1 specifications ............
Page 304 ........2-12 breaker failure example .......... 13-16 phase reach ............. 2-12 compiling logic ............13-16 phase timer .............. 2-11 configurable logic ............A-2 ZONE 3 PHASE REACH TEST contact converter inputs ......... 13-14 LPS-O Line Protection System GE Power Management...
Page 305 ............5-13 ZONE3 TIMER user settings ............6-14 functional test ............5-17 ZONE PHASE REACH & TIMERS TESTS ..... 5-1 ZONE4 TIMER ZONE PHASE REACH TESTS ........6-1 functional test ............5-18 ZONE REACH GE Power Management LPS-O Line Protection System...
Page 306 INDEX LPS-O Line Protection System GE Power Management...
Page 307 NOTES GE Power Management LPS-O Line Protection System...
Page 308 GE POWER MANAGEMENT WEBSITE The latest product information for the LPS-O relay is available on the Internet via the GE Power Management home page: http://www.GEindustrial.com/pm This site provides access to the following customer services: • Digital Products Directory • Instruction Manuals A brief description of products can be viewed online.

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