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GE Power Management

735/737 Feeder Protection Relay

1-

3

1 INTRODUCTION

1.1 OVERVIEW

1

1.1.3 THEORY OF OPERATION

A block diagram of the 735/737 hardware is shown on the following page. A 16-bit single chip microcomputer handles data
acquisition, input/output and control. Program memory, data RAM, 10 bit A/D and UART are internal to the microcomputer.

Phase and ground current are monitored via external CTs which are connected to internal interposing CTs for isolation and
signal conditioning. Low pass filters, level shifters and gain amplifiers transform the input signal to a level suitable for con-
version by the 10 bit A/D. A/D values are converted, using software, to the true RMS value of the input sinewave. Separate

×

1 and 

×

10 gain amplifiers are continuously sampled by the A/D convertor with program logic dynamically choosing the

appropriate range.

Eight rotary switches and 2 banks of DIP switches are periodically read and decoded to determine settings. Using the
appropriate curve settings, the microcomputer computes instantaneous and time overcurrent values closing the trip relay
when a trip value is reached. This relay will remain latched until all phase and ground currents have dropped to zero. True
RMS current is calculated and bar graph segments are driven under program control to indicate the value. All output relays
are driven in response to computed conditions. These drivers are opto-isolated and a separate relay supply is used to pre-
vent noise coupling for external sources to the microcomputer.

To prevent possible lockup of the relay in case of abnormal transient conditions, a separate hardware timer is continuously
reset by the microcomputer under normal conditions. In the event of the program hanging up, this external watchdog will
time out and issue a system reset.

An internal UART buffered by an isolated RS485 driver controls the serial communications. Baud rate is selectable through
an internal timer. Like all other inputs/outputs transient protection is applied to ensure reliable operation under real condi-
tions.

A flyback switching power supply generates multiple isolated supply voltages of +12 I/O, +5 digital, +12 analog and +5
RS485. Two different versions are available to cover the range 20 to 60 V DC or 90 to 300 V DC. Front end rectification and
filtering enable these supplies to also be used with 50/60Hz control power sources.

Structured firmware design running under a real time operating kernel ensures robust program operation under different
conditions. It also contributes to bug free code maintenance.

Summary of Contents for 735

Page 1: ... OFF 20 20 1 6 1 6 1 4 1 4 5 5 4 4 12 12 8 8 OFF OFF OFF OFF 1 3 0 1 3 0 4 0 4 0 2 0 0 2 0 0 9 0 9 0 140 140 50 50 220 220 100 100 1 8 0 1 8 0 8 0 8 0 1 2 0 1 2 0 3 0 3 0 160 160 70 70 110 110 20 20 PICKUP OF CT CURVE SHAPE M O D ER AT E LY IN V E R S E EXTREMELY IN V E R S E V E R Y IN V ER S E D E F I NIT E TIME NORMAL INVERSE M O D ER AT E LY IN V E R S E EXTREMELY IN V E R S E V E R Y IN V ER ...

Page 2: ...multipliers for each curve 3 different curve types ANSI IAC IEC BS142 b INDICATORS Trip Phase A B C instantaneous Phase A B C time overcurrent Ground fault instantaneous Ground fault time overcurrent Status Relay in service Service required Phase pickup Ground pickup Current bargraph 10 to 100 c OTHER Conventional 1 A or 5 A CT input Drawout case AC or DC control power Seal provision for tamper pr...

Page 3: ...This is useful for monitoring breaker loading and during test ing Ground level and time delay can be selected for coordination with upstream devices The ground signal is normally derived as the residual sum of the 3 phase CTs eliminating the need for an additional ground sensor Alternatively for more sensi tive detection an additional core balance zero sequence ground sensor encircling the 3 phase...

Page 4: ...nd currents have dropped to zero True RMS current is calculated and bar graph segments are driven under program control to indicate the value All output relays are driven in response to computed conditions These drivers are opto isolated and a separate relay supply is used to pre vent noise coupling for external sources to the microcomputer To prevent possible lockup of the relay in case of abnorm...

Page 5: ...1 4 735 737 Feeder Protection Relay GE Power Management 1 1 OVERVIEW 1 INTRODUCTION 1 Figure 1 1 735 BLOCK DIAGRAM ...

Page 6: ...819 0030 1 2 3 REVISION HISTORY Table 1 1 ORDER CODES 735 737 S S S S S S S S Basic Unit 735 737 Standard 735 Relay with 50 51 50G 51G protection 737 Relay same as 735 with 8 additional output relays Phase CT Secondary 1 1 A Phase CT secondaries 5 5 A Phase CT secondaries Ground CT Secondary 1 1 A Ground CT secondaries 5 5 A Ground CT secondaries Control Power LO 20 to 60 V DC 20 to 48 V AC at 50 ...

Page 7: ...in steps of 5 or OFF Curve Types ANSI IAC IEC BS142 Curve shapes definite time moderately inverse normal inverse very inverse extremely inverse See time overcurrent curves curves apply up to 20 pickup or 20 sensor whichever is less Time multiplier 10 curves 1 to 10 for each shape 4 shift multipliers 0 5 0 8 1 1 1 Definite time 100 ms to 1 sec in steps of 100 ms Reset Time reset to zero each time c...

Page 8: ...480 W 125 V DC 20 A 80 A 0 8 A 100 W 250 V DC 20 A 80 A 0 4 A 100 W DC Inductive L R 40 mS 30 V DC 20 A 80 A 5 A 150 W 125 V DC 20 A 80 A 0 3 A 375 W 250 V DC 20 A 80 A 0 2 A 50 W AC Resistive 120 V AC 20 A 80 A 20 A 2400 VA 250 V AC 20 A 80 A 20 A 5000 VA AC Inductive PF 0 4 120 V AC 20 A 80 A 8 A 960 VA 250 V AC 20 A 80 A 7 A 1750 VA VOLTAGE MAKE CARRY BREAK MAX LOAD CONTINUOUS 0 2 S DC Resistiv...

Page 9: ...e 4 kV differential modes 2 kV Oscillatory Surge Withstand per ANSI IEEE C37 90 1 per Ontario Hydro A 28M 82 Voltage Dips per IEC 61000 4 11 0 40 70 Electrostatic Discharge per IEC 255 22 2 4 4 kV Damp Heat Humidity Cyclic per IEC 68 2 30 6 days Make and Carry for relays per IEEE C37 90 30 A Current Withstand per ANSI IEEE C37 90 40 rated 1 A for 2 seconds 60 rated 5 A for 1 second RFI Radiated Im...

Page 10: ......

Page 11: ...hould further information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purpose the matter should be referred to the General Electric Company To the extent required the products described herein meet applicable ANSI IEEE and NEMA standards but no such assurance is given with respect to local codes and ordi nances because they vary greatly ...

Page 12: ......

Page 13: ...T TRANSFORMERS 2 8 2 2 3 OUTPUT RELAYS 2 8 2 2 4 COMMUNICATIONS 2 8 2 2 5 CONTROL POWER 2 11 2 2 6 SYSTEM GROUNDING 2 12 2 2 7 HI POT TESTING 2 12 3 SETUP AND OPERATION 3 1 FRONT PANEL 3 1 1 DESCRIPTION 3 1 3 2 CONTROLS 3 2 1 PHASE PICKUP 1 3 2 3 2 2 PHASE CURVE SHAPE 2 3 2 3 2 3 PHASE TIME MULTIPLIER 3 3 3 3 2 4 PHASE INSTANTANEOUS 4 3 3 3 2 5 GROUND PICKUP 5 3 4 3 2 6 GROUND CURVE SHAPE 6 3 4 3 ...

Page 14: ... 5 4 2 4 FUNCTION CODE 05 EXECUTE OPERATION 4 6 4 2 5 FUNCTION CODE 06 STORE SINGLE SETPOINT 4 7 4 2 6 FUNCTION CODE 07 READ STATUS 4 7 4 2 7 FUNCTION CODE 16 STORE MULTIPLE SETPOINTS 4 8 4 2 8 ERROR RESPONSES 4 9 4 3 MEMORY MAP 4 3 1 MODBUS MEMORY MAP 4 10 4 3 2 MEMORY MAP DATA FORMATS 4 12 5 OVERCURRENT CURVES 5 1 OVERVIEW 5 1 1 DESCRIPTION 5 1 5 2 ANSI CURVES 5 2 1 ANSI MODERATELY INVERSE CURVE...

Page 15: ...PHASE CURRENT READING ACCURACY TEST 6 4 6 2 4 GROUND CURRENT READING ACCURACY TEST 6 4 6 2 5 INSTANTANEOUS PHASE OVERCURRENT PICKUP TEST 6 5 6 2 6 INSTANTANEOUS GROUND OVERCURRENT PICKUP TEST 6 5 6 2 7 INSTANTANEOUS PHASE OVERCURRENT TIMING TEST 6 5 6 2 8 INSTANTANEOUS GROUND FAULT OVERCURRENT TIMING TEST 6 5 6 2 9 PHASE OVERCURRENT CURVE VERIFICATION 6 6 6 2 10 GROUND FAULT OVERCURRENT CURVE VERI...

Page 16: ...iv 735 737 Feeder Protection Relay GE Power Management TABLE OF CONTENTS ...

Page 17: ...gure below shows the physical dimensions of the 735 737 A single cutout in the panel as per the dimensions of Figure 2 2 SINGLE AND DOUBLE UNIT PANEL CUTOUTS is required to mount the fixed chassis When mounting the 735 737 provision should be made for the door to open without hitting adjacent components mounted on the panel For 19 inch rack mount applications a 735 737 can be mounted individually ...

Page 18: ...s to ensure the front bezel fits snugly bend out the retaining tabs as shown below Figure 2 3 SLIDING THE UNIT INTO THE PANEL Figure 2 4 BEND UP MOUNTING TABS The retaining tabs will be sufficient to hold the chassis securely in place If additional fastening is desired the SR optional mounting kit can be ordered This kit provides additional support with adjustable mounting brackets The captive cha...

Page 19: ...e relay completely disengages Figure 2 5 RELAY WITHDRAWAL To insert the relay raise the handle to the highest position Slide the relay into the case until the guide pins engage in the slots on each side Now press downward on the handle until it clicks and locks in the vertical position An index pin at the back of the 737 captive chassis prevents the wrong model of relay from being inserted into a ...

Page 20: ...O This is the serial number of the relay 3 FILE NO This number indicates the configuration of the relay It is important when inserting a relay into a case to ensure that the configuration file number is the same for both pieces See Section 1 2 3 REVISION HISTORY on page 1 5 for details 4 MFG DATE This is the date the relay was produced at the factory 5 VERSION NO This indicates the revision of the...

Page 21: ...e following page where the 735 737 is used as primary protection Ensure that the wiring diagram number on the drawout chassis label matches the number of the instruction manual wiring diagram Terminals are numbered in rows Use the labels on the back of the relay to identify terminals with a row letter and position number Terminal numbers and symbols on the back of the relay should match the wiring...

Page 22: ...2 6 735 737 Feeder Protection Relay GE Power Management 2 2 ELECTRICAL 2 INSTALLATION 2 Figure 2 8 TYPICAL WIRING DIAGRAM ...

Page 23: ...sted wiring when the 735 737 is used as backup protection in conjunction with other relays Select the appropriate scheme depending on whether ground sensing is by the residual method using the phase CTs or by the core balance method using a separate CT Figure 2 9 BACKUP WIRING CORE BALANCE Figure 2 10 BACKUP WIRING RESIDUAL ...

Page 24: ...cts are Form C Contact ratings are shown in Section 1 3 3 OUTPUTS on page 1 7 Connect the SERVICE relay output to a warning device such as a SCADA monitor For more complex control schemes or for status signalling to a SCADA system the 737 has 8 additional Form C relays These can be programmed with option switches 6 and 7 to select the operating mode as energize on trip pulsed latched cause of trip...

Page 25: ...ailable repeaters to increase the number of relays on a single channel to more than 32 Different GE Power Management relays may be con nected to the same twisted pair link providing they are all programmed with a unique address and the same baud rate Figure 2 11 RS485 CONNECTION Figure 2 12 RS485 TERMINATION Due to address limitations only 31 735 737s can be put on a single channel However a diffe...

Page 26: ...r training testing purposes To use this software the computer RS232 serial port is connected through an RS232 to RS485 converter as shown below This can be a commercially available model or the GE Power Man agement RS232 RS485 converter module Set the relay front panel communication switches to 9600 baud address 1 test ON Apply power to the computer RS232 RS485 converter and relay Install the setu...

Page 27: ...d the control voltage and rated voltage on drawout case terminal label match to prevent dam age For example the 125 250 power supply will work with any voltage from 90 to 300 V DC or AC voltage from 70 to 265 V AC The internal fuse may blow if too high a voltage is applied resulting in a completely dead relay If this occurs the RELAY IN SERVICE indicator will be off and the service output contacts...

Page 28: ...e should be used for optimum transient protection Do not rely on a ground connection to a part of the metal switchgear enclosure because a low impedance to ground cannot be guaranteed 2 2 7 HI POT TESTING Prior to leaving the factory all terminals except filter ground and communications are hi pot dielectric strength tested If hi pot testing is to be performed on an installed relay for insulation ...

Page 29: ...ANEL 3 3 SETUP AND OPERATION 3 1 FRONT PANEL 3 1 1 DESCRIPTION A front panel view of the 735 737 relay is shown below An explanation of each of the numbered controls indicators is con tained in the following sections Figure 3 1 FRONT PANEL CONTROLS AND INDICATORS 735 Feeder Protection Relay ...

Page 30: ...e OFF position to disable phase time overcurrent Figure 3 2 PHASE PICKUP SETTING 3 2 2 PHASE CURVE SHAPE 2 Five different curve shapes can be selected for the phase time overcurrent to provide the required coordination These are definite time moderately inverse normal inverse very inverse and extremely inverse For each curve either the LO band or HI band of the phase pickup setting Control 1 is se...

Page 31: ...er shift option switches to move the selected curve up or down see Section 3 4 2 OPTION SWITCHES 14 Curves are shown in Chapter 5 for overlays and visual inspection Formulas and tabular data are also given for use with computer software or manual plotting on other co ordination curves Figure 3 4 PHASE MULTIPLIER TIME SETTING 3 2 4 PHASE INSTANTANEOUS 4 Instantaneous phase trip level with no intent...

Page 32: ...CURVE SHAPE is set to a LO range 15 to 55 Use the outer HI band if the ground CURVE SHAPE is set to a HI range 60 to 100 Select OFF to disable ground time overcurrent pickup and trip Figure 3 6 GROUND TIME PICKUP SETTING 3 2 6 GROUND CURVE SHAPE 6 Five different curve shapes can be selected for the ground time overcurrent to provide the required coordination These are definite time moderately inve...

Page 33: ...r software or manual plotting on other co ordina tion curves Use the ground time multiplier option switches to move the curve up or down see Section 3 4 SWITCHES Figure 3 8 GROUND TIME MULTIPLIER SETTING 3 2 8 GROUND INSTANTANEOUS 8 Instantaneous ground current trip level with no intentional delay 35 ms max is set with the ground instantaneous dial as a multiple of the ground CT sensor For residua...

Page 34: ...overcurrent persists the 735 737 will time out and trip with the TRIP 51 N indicator on 3 3 2 TRIP INDICATORS 10 Fault indicators are provided to determine the cause of trip Each indicator is latched and remains set after a trip until cleared with the CLEAR key while control power is applied When a trip occurs the TRIP relay contacts are closed until the three phase and neutral currents are all ze...

Page 35: ...um RMS current in any phase as a percentage of CT primary rating for the range 10 to 100 is displayed on this bargraph indicator If current in all phases is below 10 of CT rating all segments will be off For currents above 100 of CT rating all segments will be on All segments up to the actual current will be on for values between 10 and 100 For example CT RATING 200 5 PHASE PICKUP 70 of CT LO PHAS...

Page 36: ...communication commands to simulate different dial settings with computer controlled phase and ground currents for testing and training purposes Protection is disabled in the test position once simulation commands are received from the communication port Set this switch OFF to disable simulation during normal operation 3 4 2 OPTION SWITCHES 14 The option switches are selected according to the follo...

Page 37: ...F and switch 2 ON b GROUND MULTIPLIER SHIFT Ground time multiplier shift works exactly the same way as the phase shift time multiplier except that it affects the selected ground curve c FREQUENCY Nominal system frequency should be set to determine the sample rate for optimum current measurement d PICKUP CAUSE OF TRIP RELAYS 737 ONLY The 737 has 8 additional output relays fir more complex control s...

Page 38: ...rush currents typically experienced in these situations and allows a coordinated clearance of permanent faults by fuses or inverse time overcurrent relays A pro grammable phase and ground instantaneous trip block time from 0 to 180 seconds can be programmed with this setpoint If this setpoint is enabled when the 735 737 first detects current in any phase it disables phase and ground instantaneous ...

Page 39: ...are used to select the desired operation Use a mouse or the arrow keys to select the desired menu item Command choices appear on the left side of the screen Communication status and COM port in use are shown on the bottom of the screen In the upper right area of the screen the software revision will be displayed Screen information can be printed on the computer printer by pressing the F2 key when ...

Page 40: ...hese can be used as a starting point for making new relay set ups SETPOINTS EDITOR FILE SAVE Saves the settings in the computer memory to the file on the currently selected disk which was originally loaded The origi nal file is overwritten SETPOINTS EDITOR FILE SAVE AS Saves the settings in the computer memory to a new file A File List window identical to the one in Setpoints File Open will pop up...

Page 41: ...ation is performed when this menu item is selected QUIT Exit the 735SETUP program back to DOS 3 5 5 STATUS Once communication with the relay is established menus are used for direct communication with the relay to read actual values read settings and simulate relay operation When screen values are changed the modified data is sent immediately to the connected relay These menu items are shown and d...

Page 42: ...be injected into the relay via its rear terminals for testing Fault sim ulations can also be simulated using only a computer by entering required currents with this menu SETPOINTS CUSTOM SCHEME Custom scheme setpoints can be selected on the screen This allows the relay to be configured using one of three curve types Aux relay assignment and block instantaneous Switch 8 on the side of the relay mus...

Page 43: ...nk After a trip the relay will return to Command Use Current Inputs mode and the Command Simulate Currents command must be executed for each new trip simulation The relay front panel TEST switch 8 must be on for simulation mode to work 3 5 9 FILE FILE FILE TO RELAY Transfer all settings except the actual relay settings from a file on the disk in the default directory to the relay connected to the ...

Page 44: ... 1 OFF Phase Instantaneous 6000 A Set the PHASE INSTANTANEOUS to 10 CT This setting is independent of the PHASE PICKUP setting used for time overcurrent trips Ground Sensing Residual Wire the ground current input using the phase CTs connected for residual sensing Use the phase CT primary as the ground CT value in setting pickup and instantaneous ground settings Ground Fault Trip Level 240 A Ground...

Page 45: ...or a baud rate of 9600 2 on 1 off Choose the combination of numbers that adds up to the required slave address 10 2 4 on 8 6 on 3 off 5 off 7 off Disable communications test mode for normal operations Test 8 off The switch settings are SWITCH POSITION SETTING 1 OFF 9600 baud 2 ON 3 OFF Address 10 4 ON 5 OFF 6 ON 7 OFF 8 OFF Test OFF ...

Page 46: ...3 18 735 737 Feeder Protection Relay GE Power Management 3 6 SETUP EXAMPLE 3 SETUP AND OPERATION 3 ...

Page 47: ...wo wire RS485 hardware 4 wire RS422 is also available Data flow is bidi rectional referred to as half duplex That is data is never transmitted and received at the same time For RS485 electrical interface receive and transmit data alternate over the same 2 wires RS485 lines should be connected in a daisy chain configuration with terminating resistors installed at each end of the link that is at the...

Page 48: ...odbus defines function codes of 1 to 127 The 735 737 implements some of these functions See section 4 3 for details of the supported function codes In a master request transmission the FUNC TION CODE tells the slave what action to perform In a slave response transmission if the FUNCTION CODE sent from the slave is the same as the FUNCTION CODE sent from the master then the slave performed the func...

Page 49: ...device performing any incorrect operation The CRC 16 calculation is an industry standard method used for error detection An algorithm is included here to assist programmers in situations where no standard CRC 16 calculation routines are available CRC 16 Algorithm Once the algorithm is complete the working register A will contain the CRC value to be transmitted Note that this algo rithm requires th...

Page 50: ... code a count of the number of data bytes to follow the data itself and the CRC Each data item setpoint is sent as a two byte number with the high order byte sent first Note that broadcast mode is not allowed with this function The master transmission will be ignored by all slaves if broadcast mode is used with this function code Message Format and Example Request slave 11 to respond with 3 setpoi...

Page 51: ... follow the data itself and the CRC Each data item actual value is sent as a two byte num ber with the high order byte sent first The broadcast mode is not allowed with this function code The master transmission will be ignored by all slaves if broad cast mode is used with this function code Message Format and Example Request slave 11 to respond with 1 actual value starting at address 0008 For thi...

Page 52: ...tpoints using STORE SETPOINTS function 06 or 16 Then command TEST I O ON is issued Normal relay control of this I O hardware is suspended and the test patterns in setpoint memory are substituted This continues until a TEST I O OFF command is received or control power is removed or TEST switch 8 off During testing normal protection is disabled As a safeguard all test and simulation commands are ign...

Page 53: ...turned is the lower 8 bits of the relay status register defined in the memory map Note that broadcast mode is not allowed with this function code The master transmission will be ignored by all slaves if broadcast mode is used with this function code Message Format and Example Request status from slave 11 The status is stored in actual values memory map location 0014H Assume the value is 01101101b ...

Page 54: ...ommands SIMULATION OFF and NORMAL SETTINGS is received or TEST switch 8 off Setpoint test patterns can also be stored for forcing relays and LEDs and the bargraph to test outputs Using this setpoint store command the test pattern is first stored The Execute Operation function 05 command TEST I O ON is issued The LEDs relays and bargraph are driven by the test patterns stored in setpoints instead o...

Page 55: ...DATA VALUE The value referenced in the data field transmitted by the master is not within range for the selected data address 06 BUSY REJECTED MESSAGE The transmission was received error free but the request could not be performed 08 MEMORY PARITY ERROR A hardware error has occurred in the 735 737 For example a RAM failure has occurred and the data requested cannot be sent MASTER TRANSMISSION BYTE...

Page 56: ...product device code 25 26 F1 25 735 26 737 0001 GE product hardware revision code 1 to 26 F1 4 D 0002 GE product firmware revision code 1 to 255 F3 01 00 1 0 0003 GE product modification file number 0 to 1000 F1 0 no mod 0004 Reserved 000F Reserved MONITORED DATA 0010 Phase A current 0 to 2000 1 CT F1 0011 Phase B current 0 to 2000 1 CT F1 0012 Phase C current 0 to 2000 1 CT F1 0013 Ground current...

Page 57: ...0 0052 Phase Time Multiplier dial Remote 1 to 10 1 dial F112 0 0053 Phase Instantaneous dial Remote 1 to 10 1 dial F109 0 0054 Ground Pickup dial Remote 1 to 19 1 dial F110 0 0055 Ground Curve Shape dial Remote 1 to 5 1 dial F104 0 0056 Ground Time Multiplier dial Remote 1 to 10 1 dial F112 0 0057 Ground Instantaneous dial Remote 1 to 10 1 dial F111 0 0058 Phase A current Simulation 0 to 2000 1 CT...

Page 58: ...ped XXXX XXX1 XXXX XXXX not used XXXX XX1X XXXX XXXX not used XXXX X1XX XXXX XXXX not used XXXX 1XXX XXXX XXXX not used XXX1 XXXX XXXX XXXX not used XX1X XXXX XXXX XXXX trip relays disabled 1 X1XX XXXX XXXX XXXX simulated dials 1 1XXX XXXX XXXX XXXX simulated current 1 F102 DIP Switches XXXX XXXX XXXX XXX1 Switch 1 on 1 XXXX XXXX XXXX XX1X Switch 2 on 1 XXXX XXXX XXXX X1XX Switch 3 on 1 XXXX XXXX ...

Page 59: ...urrent LED on 1 XXXX XXXX XXX1 XXXX Phase A instantaneous LED on 1 XXXX XXXX XX1X XXXX Phase B instantaneous LED on 1 XXXX XXXX X1XX XXXX Phase C instantaneous LED on 1 XXXX XXXX 1XXX XXXX Ground instantaneous LED on 1 XXXX XXX1 XXXX XXXX Phase pickup LED on 1 XXXX XX1X XXXX XXXX Ground pickup LED on 1 XXXX X1XX XXXX XXXX Relay in service LED on 1 XXXX 1XXX XXXX XXXX Service required LED on 1 F106...

Page 60: ...ely Inverse high 10 F108 PHASE PICKUP SWITCH OFF 1 20 2 30 3 40 4 50 5 60 6 70 7 80 8 90 9 100 10 110 11 120 12 130 13 140 14 150 15 160 16 180 17 200 18 220 19 F109 PHASE INSTANTANEOUS DIAL OFF 1 4 2 5 3 6 4 8 5 10 6 12 7 14 8 16 9 20 10 F110 Ground fault pickup OFF 1 15 2 20 3 25 4 30 5 35 6 40 7 45 8 50 9 55 10 Table 4 2 735 737 MEMORY MAP DATA FORMATS Sheet 3 of 5 FORMAT TYPE DESCRIPTION ...

Page 61: ...ER DIAL 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 F113 CAUSE OF TRIP XXXX XXXX XXXX XXX1 Phase A time OC trip XXXX XXXX XXXX XX1X Phase B time OC trip XXXX XXXX XXXX X1XX Phase C time OC trip XXXX XXXX XXXX 1XXX Ground time OC trip XXXX XXXX XXX1 XXXX Phase A inst trip XXXX XXXX XX1X XXXX Phase B inst trip XXXX XXXX X1XX XXXX Phase C inst trip XXXX XXXX 1XXX XXXX Ground inst trip Table 4 2 735 737...

Page 62: ...XXXX XXX1 XXXX Switch 4 on 1 XXXX XXXX XX1X XXXX Switch 3 on 1 XXXX XXXX X1XX XXXX Switch 2 on 1 XXXX XXXX 1XXX XXXX Switch 1 on 1 F115 LAST OC TRIP TIME 0 to 65000 Actual Trip Time 65001 Trip time 65 seconds 65535 Time not available F116 CURVE SHAPE 0 ANSI 1 IAC 2 IEC BS142 F117 BLOCK INSTANTANEOUS 0 DISABLED 1 to 180 seconds F118 AUX TRIP RELAY 0 Main Trip 1 86 Lockout 2 Ground Trip Table 4 2 73...

Page 63: ...tely Inverse Normal Inverse Very Inverse Extremely Inverse Definite Time IAC CURVES IAC Short Time IAC Inverse IAC Very Inverse IAC Extremely Inverse Definite Time IEC BS142 CURVES IEC Short Time IEC A Normal Inverse IEC B Very Inverse IEC C Extremely Inverse Definite Time For the graphs shown in this chapter the per unit value on the x axis is given as where I current input to relay Ipu pickup cu...

Page 64: ...6 0 844 0 800 0 766 0 740 0 663 0 626 7 34 105 4 728 2 651 1 672 1 336 1 163 1 057 0 985 0 933 0 894 0 863 0 773 0 730 8 38 977 5 404 3 030 1 910 1 527 1 329 1 208 1 126 1 066 1 021 0 986 0 884 0 835 9 43 849 6 079 3 408 2 149 1 718 1 496 1 359 1 267 1 200 1 149 1 109 0 994 0 939 10 48 722 6 755 3 787 2 388 1 909 1 662 1 510 1 407 1 333 1 277 1 233 1 105 1 043 0 8 1 7 795 1 081 0 606 0 382 0 305 0...

Page 65: ...T CURVES 5 2 ANSI CURVES 5 Figure 5 1 ANSI MODERATELY INVERSE CURVES 735 737 ANSI MODERATELY INVERSE CURVES 1000 100 10 1 0 1 0 01 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803658A4 CDR 1 2 3 4 5 6 7 8 9 10 TIME MULTIPLIER GE POWER MANAGEMENT ...

Page 66: ...737 0 678 0 494 0 398 7 60 300 14 994 6 179 2 639 1 794 1 424 1 205 1 057 0 946 0 860 0 791 0 576 0 464 8 68 915 17 137 7 062 3 016 2 051 1 627 1 378 1 208 1 082 0 983 0 904 0 659 0 530 9 77 529 19 279 7 945 3 392 2 307 1 830 1 550 1 359 1 217 1 106 1 017 0 741 0 596 10 86 143 21 421 8 828 3 769 2 563 2 034 1 722 1 509 1 352 1 229 1 130 0 823 0 663 0 8 1 13 783 3 427 1 412 0 603 0 410 0 325 0 276 ...

Page 67: ...RRENT CURVES 5 2 ANSI CURVES 5 Figure 5 2 ANSI NORMAL INVERSE CURVES 735 737 ANSI NORMAL INVERSE CURVE 1000 100 10 1 0 1 0 1 0 01 0 01 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803662A4 CDR 1 2 3 4 5 6 7 8 9 10 TIME MULTIPLIER GE POWER MANAGEMENT ...

Page 68: ...469 0 437 0 348 0 306 7 41 791 10 969 4 638 1 879 1 194 0 910 0 756 0 661 0 595 0 547 0 510 0 406 0 357 8 47 762 12 537 5 301 2 148 1 365 1 040 0 864 0 755 0 680 0 625 0 583 0 464 0 408 9 53 732 14 104 5 963 2 416 1 535 1 169 0 973 0 849 0 765 0 703 0 655 0 522 0 459 10 59 702 15 671 6 626 2 685 1 706 1 299 1 081 0 944 0 850 0 781 0 728 0 580 0 510 0 8 1 9 552 2 507 1 060 0 430 0 273 0 208 0 173 0...

Page 69: ...CURRENT CURVES 5 2 ANSI CURVES 5 Figure 5 3 ANSI VERY INVERSE CURVES 735 737 ANSI VERY INVERSE CURVE 1000 100 10 1 0 1 0 01 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803660A4 CDR 1 2 3 4 5 6 7 8 9 10 TIME MULTIPLIER GE POWER MANAGEMENT ...

Page 70: ...0 329 0 295 0 211 0 179 7 51 612 14 003 6 105 2 308 1 288 0 866 0 649 0 522 0 440 0 384 0 344 0 246 0 209 8 58 985 16 004 6 977 2 638 1 472 0 990 0 742 0 596 0 503 0 439 0 393 0 281 0 239 9 66 358 18 004 7 849 2 967 1 656 1 113 0 834 0 671 0 566 0 494 0 442 0 316 0 269 10 73 731 20 005 8 722 3 297 1 840 1 237 0 927 0 745 0 628 0 549 0 491 0 351 0 298 0 8 1 11 797 3 201 1 395 0 528 0 294 0 198 0 14...

Page 71: ...NT CURVES 5 2 ANSI CURVES 5 Figure 5 4 ANSI EXTREMELY INVERSE CURVES 735 737 ANSI EXTREMELY INVERSE CURVE 100 1000 10 1 0 1 0 01 0 1 0 01 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803661A4 CDR 1 2 3 4 5 6 7 8 9 10 TIME MULTIPLIER GE POWER MANAGEMENT ...

Page 72: ... 350 0 350 0 350 0 350 0 350 0 350 0 350 0 350 0 350 0 350 0 350 8 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 0 400 9 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 0 450 10 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 500 0 8 1 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 0 080 2 0 160 0 ...

Page 73: ...CURRENT CURVES 5 3 DEFINITE TIME CURVES 5 Figure 5 5 DEFINITE TIME CURVES 735 737 DEFINITE TIME CURVES 1000 100 10 1 0 1 0 01 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803650A4 CDR TIME MULTIPLIER 10 9 8 7 6 5 4 3 2 1 GE POWER MANAGEMENT ...

Page 74: ...3 0 157 0 153 0 150 0 148 0 141 0 138 7 1 599 0 501 0 332 0 244 0 215 0 199 0 190 0 183 0 179 0 175 0 173 0 165 0 161 8 1 828 0 573 0 379 0 279 0 245 0 228 0 217 0 210 0 204 0 200 0 197 0 188 0 184 9 2 056 0 644 0 427 0 314 0 276 0 256 0 244 0 236 0 230 0 225 0 222 0 212 0 207 10 2 285 0 716 0 474 0 349 0 307 0 285 0 271 0 262 0 255 0 250 0 247 0 235 0 230 0 8 1 0 366 0 115 0 076 0 056 0 049 0 046...

Page 75: ...3 5 OVERCURRENT CURVES 5 4 IAC CURVES 5 Figure 5 6 IAC SHORT INVERSE CURVES 735 737 IAC SHORT INVERSE CURVE 10 1 0 1 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803655A4 CDR 1 2 3 4 5 6 7 8 9 10 CURVE MULTIPLIER GE POWER MANAGEMENT ...

Page 76: ...0 922 0 891 0 800 0 755 7 33 014 4 043 2 623 1 862 1 549 1 373 1 259 1 179 1 120 1 075 1 039 0 933 0 881 8 37 730 4 621 2 997 2 128 1 770 1 569 1 439 1 348 1 280 1 229 1 188 1 066 1 007 9 42 447 5 199 3 372 2 394 1 992 1 765 1 619 1 516 1 441 1 382 1 336 1 200 1 132 10 47 163 5 776 3 747 2 660 2 213 1 961 1 798 1 685 1 601 1 536 1 485 1 333 1 258 0 8 1 7 546 0 924 0 599 0 426 0 354 0 314 0 288 0 2...

Page 77: ...VERCURRENT CURVES 5 4 IAC CURVES 5 Figure 5 7 IAC INVERSE CURVES 735 737 IAC INVERSE CURVE 1000 100 10 1 0 1 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803659A4 CDR 1 2 3 4 5 6 7 8 9 10 CURVE MULTIPLIER CURVE MULTIPLIER GE POWER MANAGEMENT ...

Page 78: ...3 0 496 0 420 0 383 7 30 738 10 154 4 592 1 881 1 202 0 932 0 793 0 709 0 652 0 610 0 579 0 490 0 447 8 35 129 11 605 5 248 2 150 1 374 1 065 0 906 0 810 0 745 0 698 0 662 0 560 0 511 9 39 520 13 055 5 904 2 418 1 545 1 198 1 020 0 911 0 838 0 785 0 744 0 630 0 575 10 43 911 14 506 6 560 2 687 1 717 1 332 1 133 1 012 0 931 0 872 0 827 0 700 0 639 0 8 1 7 026 2 321 1 050 0 430 0 275 0 213 0 181 0 1...

Page 79: ... 5 OVERCURRENT CURVES 5 4 IAC CURVES 5 Figure 5 8 IAC VERY INVERSE CURVES 735 737 IAC VERY INVERSE CURVE 1000 100 10 1 0 1 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803657A4 CDR 1 2 3 4 5 6 7 8 9 10 CURVE MULTIPLIER GE POWER MANAGEMENT ...

Page 80: ...18 0 278 0 171 0 125 7 49 870 11 893 5 244 2 120 1 244 0 860 0 651 0 521 0 434 0 371 0 324 0 200 0 146 8 56 994 13 591 5 993 2 423 1 422 0 983 0 744 0 595 0 495 0 424 0 370 0 228 0 167 9 64 119 15 290 6 743 2 726 1 600 1 106 0 837 0 670 0 557 0 477 0 417 0 257 0 188 10 71 243 16 989 7 492 3 029 1 778 1 229 0 929 0 744 0 619 0 530 0 463 0 285 0 209 0 8 1 11 399 2 718 1 199 0 485 0 284 0 197 0 149 0...

Page 81: ...URRENT CURVES 5 4 IAC CURVES 5 Figure 5 9 IAC EXTREMELY INVERSE CURVES 735 737 IAC EXTREMELY INVERSE CURVE 1000 100 10 1 0 1 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803656A4 CDR 1 2 3 4 5 6 7 8 9 10 CURVE MULTIPLIER GE POWER MANAGEMENT ...

Page 82: ... 0 119 7 0 7 8 962 1 070 0 623 0 391 0 308 0 264 0 235 0 216 0 201 0 189 0 180 0 153 0 139 8 0 8 10 242 1 223 0 712 0 447 0 352 0 301 0 269 0 246 0 230 0 217 0 206 0 175 0 159 9 0 9 11 522 1 376 0 801 0 503 0 396 0 339 0 303 0 277 0 258 0 244 0 232 0 197 0 179 10 1 0 12 802 1 528 0 890 0 559 0 440 0 377 0 336 0 308 0 287 0 271 0 258 0 219 0 199 0 8 1 0 1 2 048 0 245 0 142 0 089 0 070 0 060 0 054 0...

Page 83: ...VES 5 Figure 5 10 IEC SHORT TIME CURVES 735 737 IEC SHORT TIME CURVE 1000 100 10 1 0 1 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803654A4 CDR 1 0 1 2 0 2 3 0 3 4 0 4 5 0 5 6 0 6 7 0 7 8 0 8 9 0 9 10 1 0 CURVE MULTIPLIER 735 IEC FACEPLATE EQUIVALENT GE POWER MANAGEMENT ...

Page 84: ... 7 0 7 50 190 6 011 3 508 2 210 1 746 1 498 1 339 1 229 1 146 1 082 1 031 0 877 0 800 8 0 8 57 360 6 870 4 009 2 526 1 996 1 712 1 531 1 404 1 310 1 237 1 179 1 003 0 914 9 0 9 64 530 7 729 4 510 2 842 2 245 1 925 1 722 1 580 1 474 1 392 1 326 1 128 1 028 10 1 0 71 700 8 588 5 011 3 158 2 495 2 139 1 913 1 755 1 638 1 546 1 473 1 253 1 142 0 8 1 0 1 11 472 1 374 0 802 0 505 0 399 0 342 0 306 0 281...

Page 85: ...RVES 5 Figure 5 11 IEC A CURVES 735 737 IEC A CURVE NORMAL INVERSE 1000 100 10 1 0 1 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803653A4 CDR 1 0 1 2 0 2 3 0 3 4 0 4 5 0 5 6 0 6 7 0 7 8 0 8 9 0 9 10 1 0 CURVE MULTIPLIER 735 IEC FACEPLATE EQUIVALENT GE POWER MANAGEMENT ...

Page 86: ...505 0 449 0 289 0 214 7 0 7 94 503 9 451 4 726 2 362 1 573 1 179 0 943 0 786 0 674 0 589 0 524 0 338 0 249 8 0 8 10 801 5 401 2 699 1 798 1 348 1 078 0 898 0 770 0 674 0 599 0 386 0 285 9 0 9 12 152 6 076 3 036 2 023 1 516 1 213 1 010 0 866 0 758 0 674 0 434 0 321 10 1 0 13 502 6 751 3 374 2 247 1 685 1 347 1 123 0 962 0 842 0 749 0 482 0 356 0 8 1 0 1 21 601 2 160 1 080 0 540 0 360 0 270 0 216 0 ...

Page 87: ...VES 5 Figure 5 12 IEC B CURVES 735 737 IEC B CURVE VERY INVERSE 1000 100 10 1 0 1 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803652A4 CDR 1 0 1 10 1 0 CURVE MULTIPLIER 735 IEC FACEPLATE EQUIVALENT 2 0 2 3 0 3 4 0 4 5 0 5 6 0 6 7 0 7 8 0 8 9 0 9 GE POWER MANAGEMENT ...

Page 88: ...0 242 0 108 0 061 7 0 7 22 401 9 334 3 500 1 866 1 166 0 799 0 583 0 444 0 350 0 283 0 126 0 072 8 0 8 25 601 10 668 4 000 2 132 1 332 0 913 0 666 0 508 0 400 0 323 0 144 0 082 9 0 9 28 801 12 001 4 500 2 399 1 499 1 028 0 749 0 571 0 450 0 364 0 162 0 092 10 1 0 32 001 13 335 5 000 2 666 1 665 1 142 0 833 0 634 0 500 0 404 0 180 0 102 0 8 1 0 1 62 439 5 120 2 134 0 800 0 426 0 266 0 183 0 133 0 1...

Page 89: ... 5 Figure 5 13 IEC C CURVES 735 737 IEC C CURVE EXTREMELY INVERSE 1000 100 10 1 0 1 0 01 0 1 MULTIPLE OF PICKUP CURRENT PER UNIT TIME IN SECONDS 1 10 100 803651A4 CDR 1 0 1 2 0 2 3 0 3 4 0 4 5 0 5 6 0 6 7 0 7 8 0 8 9 0 9 10 1 0 CURVE MULTIPLIER 735 IEC FACEPLATE EQUIVALENT GE POWER MANAGEMENT ...

Page 90: ...5 28 735 737 Feeder Protection Relay GE Power Management 5 5 IEC CURVES 5 OVERCURRENT CURVES 5 ...

Page 91: ... for training or testing purposes to understand how the relay operates 6 1 4 PHASE CURRENT READING ACCURACY TEST The 735 737 relay must read the phase current signals input from the CTs correctly to provide the instantaneous and timed overcurrent protection To determine if the relay is reading correctly set the phase pickup dial to 100 of the CT primary Use the 3 Phase Test Set to set the phase cu...

Page 92: ...6 2 735 737 Feeder Protection Relay GE Power Management 6 1 PROCEDURES 6 TESTING 6 Figure 6 1 TEST SETUP ...

Page 93: ...timer on the 3 phase Test Set should be setup to start when current is injected and stop when the trip or auxiliary if assigned relay activates Verify that the TIME 51 phase A B or C which ever phase tested LED has been activated and latched Check the trip time with the times and curves located in Chapter 5 The accuracy of the timing is 3 or 20 ms at 150 of pickup The more inverse the curve the mo...

Page 94: ... NUMBER DATE FIRMWARE NUMBER TESTED BY SERIAL NUMBER STATION CIRCUIT TYPE OF COMMUNICATIONS ESTABLISHED STATUS PHASE AND LEVEL INPUT CURRENT CT MEASURED CURRENT CT STATUS PHASE 1 CURRENT LOW END PHASE 1 CURRENT HIGH END PHASE 2 CURRENT LOW END PHASE 2 CURRENT HIGH END PHASE 3 CURRENT LOW END PHASE 3 CURRENT HIGH END GROUND LEVEL INPUT CURRENT CT MEASURED CURRENT CT STATUS GROUND CURRENT LOW END GR...

Page 95: ...PUT CURRENT STATUS PHASE 1 LOW END PHASE 1 HIGH END PHASE 2 LOW END PHASE 2 HIGH END PHASE 3 LOW END PHASE 3 HIGH END PHASE AND LEVEL DIAL SETTING xCT INPUT CURRENT STATUS GROUND LOW END GROUND HIGH END PHASE AND LEVEL DIAL SETTING xCT INPUT CURRENT EXPECTED TIME ms MEASURED TIME ms STATUS PHASE 1 LOW END 35 PHASE 1 HIGH END 35 PHASE 2 LOW END 35 PHASE 2 HIGH END 35 PHASE 3 LOW END 35 PHASE 3 HIGH...

Page 96: ...7 Feeder Protection Relay GE Power Management 6 2 TEST RECORDS 6 TESTING 6 6 2 9 PHASE OVERCURRENT CURVE VERIFICATION PICKUP LEVEL CURVE SHAPE TIME MULT TIME SHIFT INPUT CURRENT EXPECTED TIME MEASURED TIME STATUS ...

Page 97: ...ECOVER TEST 6 2 12 HI POTENTIAL TEST Note the Filter Ground terminal G11 must be left floating for this test See Section 2 2 7 HI POT TESTING on page 2 12 for details PICKUP LEVEL CURVE SHAPE TIME MULT TIME SHIFT INPUT CURRENT EXPECTED TIME MEASURED TIME STATUS POWER FAIL RECOVERY LEVEL V MEASURED LEVEL V STATUS FAIL RECOVER HIPOT LEVEL kV DURATION STATUS ...

Page 98: ...6 8 735 737 Feeder Protection Relay GE Power Management 6 2 TEST RECORDS 6 TESTING 6 ...

Page 99: ... x CT GROUND DIAL SETTINGS Ground Pickup Dial LO 15 to 55 of CT HI 60 to 100 of CT OFF Ground Shape Dial MI NI VI EI Definite Time HI LO Ground Time Multiplier Dial 1 to 10 Ground Instantaneous Dial OFF 0 1 0 2 0 4 0 8 1 2 4 8 16 x CT OPTION SWITCH SETTINGS Phase O C Shift Multiplier 0 5 0 8 1 0 1 1 Ground Time O C Shift Multiplier 0 5 0 8 1 0 1 1 Frequency 50 Hz 60 Hz Output Relays Pulsed Latched...

Page 100: ...7 2 735 737 Feeder Protection Relay GE Power Management 7 1 SETTINGS TABLE 7 COMMISSIONING 7 ...

Page 101: ...2 A 1 3 PHASE INSTANTANEOUS PICKUP The setting of the phase instantaneous element for this feeder is chosen such that it will not operate for faults beyond the first fused tap out from the feeder breaker Fault current at first fuse 5200 A Set phase instantaneous element at 6000 A Secondary current pickup level 6000 A 5 600 50 A Phase Instantaneous dial setting 50 A 5 A 10 A 1 4 GROUND PICKUP The m...

Page 102: ...ing 120 From time coordination curves established in the coordination study with a minimum coordination between devices of 0 3 seconds normally between 0 2 and 0 5 seconds determine curve shape and time multiplier Phase Curve Shape dial setting VERY INVERSE Phase Time Multiplier dial setting 3 A 2 3 PHASE INSTANTANEOUS It is desirable to operate this protection for a fault on the 600V bus Fault cu...

Page 103: ...munication link This matches the characteristic impedance of the line The termination must be placed across the A and B terminals at the master and at the and terminals H9 and H10 of the last relay on the com munications link This is to prevent reflections and ringing on the line If a different value of resistor is used there is a risk of overloading the line causing erroneous intermittent or no c...

Page 104: ... is defective and it is returned with all transportation charges prepaid to an authorized service centre or the factory Repairs or replacement under warranty will be made without charge Warranty shall not apply to any relay which has been subject to mis use negligence accident incorrect installation or use not in accor dance with instructions nor any unit that has been altered outside a GE Power M...

Page 105: ...ion 2 11 CONTROLS 3 2 CORE BALANCE BACKUP WIRING 2 7 CRC 16 ALGORITHM 4 2 4 3 CT BURDEN 1 6 CTs 600 5 3 16 description 2 8 specifications 1 6 CURRENT INDICATORS 3 7 CURRENT SIMULATION 3 12 3 14 CURRENT TRANSFORMERS see CTs CURVE SHAPE CONTROLS 3 2 CURVES 5 1 CUSTOM SCHEME 3 10 3 14 D DATA FORMATS FOR MEMORY MAP 4 12 DATA FRAME FORMAT 4 1 DATA FRAME RATE 4 1 DATA PACKET FORMAT 4 2 DEFINITE TIME CUR...

Page 106: ...use of trip relay 3 9 description 2 8 disable trip relays 3 14 enable trip relays 3 14 main trip relay 3 10 pickup relay 3 9 specifications 1 7 OUTPUTS specifications 1 7 OVERCURRENT see entries for PHASE TIME GROUND TIME PHASE INSTANTANEOUS and GROUND INSTANTANEOUS OVERCURRENT OVERCURRENT CURVES 5 1 P PANEL CUTOUTS 2 1 PHASE INSTANTANEOUS OVERCURRENT curve shape 3 2 level 3 3 multiplier 3 3 picku...

Page 107: ... 14 commands 3 14 setpoints 3 14 SPECIFICATIONS 1 6 STATUS INDICATORS 3 6 SYSTEM GROUNDING 2 12 T TEMPERATURE 1 8 TEST RECORDS 6 4 TEST SETUP 6 2 TESTING 6 1 THEORY OF OPERATION 1 3 TIMING 4 2 TRIP INDICATORS 3 6 TRIP RECORD CLEARING 3 14 TRIP RECORD PRINTING 3 15 TRIP RELAYS DISABLING 3 14 TRIP RELAYS ENABLING 3 14 TYPE TESTS 1 8 TYPICAL WIRING DIAGRAM 2 6 W WARRANTY A 4 WIRING DIAGRAM 2 6 WITHDR...

Page 108: ...iv 735 737 Feeder Protection Relay GE Power Management INDEX ...

Page 109: ...GE Power Management 735 737 Feeder Protection Relay NOTES ...

Page 110: ...d printed Product Selector Guide A graphical tool for finding the product you are interested in Sales Offices A complete listing of world wide sales offices Technical Support Complete contact information is available Instruction Manuals Manuals for many products are now available online GE Product Software The latest working versions of product software Technical Drawings Many technical drawings a...

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