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CHAPTER 5: OVERCURRENT CURVES

735/737 FEEDER PROTECTION RELAY – INSTRUCTION MANUAL

5–13

0.8

1

11.797

3.201

1.395

0.528

0.294

0.198

0.148

0.119

0.101

0.088

0.079

0.056

0.048

2

23.594

6.401

2.791

1.055

0.589

0.396

0.297

0.238

0.201

0.176

0.157

0.112

0.095

3

35.391

9.602

4.186

1.583

0.883

0.594

0.445

0.358

0.302

0.263

0.236

0.169

0.143

4

47.188

12.803

5.582

2.110

1.177

0.792

0.593

0.477

0.402

0.351

0.314

0.225

0.191

5

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

6

70.782

19.204

8.373

3.165

1.766

1.188

0.890

0.715

0.603

0.527

0.472

0.337

0.286

7

82.579

22.405

9.768

3.693

2.061

1.386

1.038

0.835

0.704

0.614

0.550

0.394

0.334

8

94.376

25.606

11.164

4.220

2.355

1.583

1.187

0.954

0.804

0.702

0.629

0.450

0.382

9

106.173

28.806

12.559

4.748

2.649

1.781

1.335

1.073

0.905

0.790

0.707

0.506

0.430

10

117.970

32.007

13.955

5.275

2.944

1.979

1.483

1.192

1.006

0.878

0.786

0.562

0.477

1.1

1

16.221

4.401

1.919

0.725

0.405

0.272

0.204

0.164

0.138

0.121

0.108

0.077

0.066

2

32.442

8.802

3.838

1.451

0.809

0.544

0.408

0.328

0.277

0.241

0.216

0.155

0.131

3

48.663

13.203

5.756

2.176

1.214

0.816

0.612

0.492

0.415

0.362

0.324

0.232

0.197

4

64.883

17.604

7.675

2.901

1.619

1.089

0.816

0.656

0.553

0.483

0.432

0.309

0.263

5

81.104

22.005

9.594

3.627

2.024

1.361

1.020

0.820

0.691

0.603

0.540

0.386

0.328

6

97.325

26.406

11.513

4.352

2.428

1.633

1.224

0.984

0.830

0.724

0.648

0.464

0.394

7

113.546

30.807

13.431

5.077

2.833

1.905

1.428

1.148

0.968

0.845

0.756

0.541

0.460

8

129.767

35.208

15.350

5.803

3.238

2.177

1.632

1.312

1.106

0.966

0.864

0.618

0.525

9

145.988

39.609

17.269

6.528

3.643

2.449

1.836

1.476

1.244

1.086

0.973

0.696

0.591

10

162.208

44.010

19.188

7.253

4.047

2.722

2.040

1.640

1.383

1.207

1.081

0.773

0.656

Table 5–4:

SHIF

T

S

CURVE

M

CURRENT (per unit I /I

0

)

1.05

1.50

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

15.00

20.00

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90
91
92
93
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Summary of Contents for 735

Page 1: ...6291F Copyright 2010 GE Multilin GE Multilin 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 Internet http www GEmultilin com 1601 0048 DK LISTED 52TL IND CONT EQ E83849 IISO9001 2000 G E M ULTILI N R E GISTERE D GE Multilin s Quality Management System is registered to ISO9001 2000 QMI 005094 UL A3775 ...

Page 2: ...rds but no such assurance is given with respect to local codes and ordinances because they vary greatly 2010 GE Multilin Incorporated All rights reserved 735 Feeder Protection Relay is a registered trademark of GE Multilin Inc The contents of this manual are the property of GE Multilin Inc This documentation is furnished on license and may not be reproduced in whole or in part without the permissi...

Page 3: ...ANSFORMERS 2 9 OUTPUT RELAYS 2 10 COMMUNICATIONS 2 10 CONTROL POWER 2 14 SYSTEM GROUNDING 2 15 HI POT TESTING 2 15 3 SETUP AND OPERATION FRONT PANEL 3 1 DESCRIPTION 3 1 CONTROLS 3 3 PHASE PICKUP 1 3 3 PHASE CURVE SHAPE 2 3 3 PHASE TIME MULTIPLIER 3 3 4 PHASE INSTANTANEOUS 4 3 5 GROUND PICKUP 5 3 5 GROUND CURVE SHAPE 6 3 6 GROUND TIME MULTIPLIER 7 3 7 GROUND INSTANTANEOUS 8 3 7 INDICATORS 3 9 STATU...

Page 4: ...ODE 05 EXECUTE OPERATION 4 7 FUNCTION CODE 06 STORE SINGLE SETPOINT 4 8 FUNCTION CODE 07 READ STATUS 4 9 FUNCTION CODE 16 STORE MULTIPLE SETPOINTS 4 9 ERROR RESPONSES 4 12 MEMORY MAP 4 13 MODBUS MEMORY MAP 4 13 MEMORY MAP DATA FORMATS 4 16 5 OVERCURRENT CURVES OVERVIEW 5 1 DESCRIPTION 5 1 ANSI CURVES 5 3 ANSI MODERATELY INVERSE CURVES 5 3 ANSI NORMAL INVERSE CURVES 5 6 ANSI VERY INVERSE CURVES 5 9...

Page 5: ...CURACY TEST 6 6 GROUND CURRENT READING ACCURACY TEST 6 7 INSTANTANEOUS PHASE OVERCURRENT PICKUP TEST 6 7 INSTANTANEOUS GROUND OVERCURRENT PICKUP TEST 6 7 INSTANTANEOUS PHASE OVERCURRENT TIMING TEST 6 8 INSTANTANEOUS GROUND FAULT OVERCURRENT TIMING TEST 6 8 PHASE OVERCURRENT CURVE VERIFICATION 6 8 GROUND FAULT OVERCURRENT CURVE VERIFICATION 6 9 POWER FAIL RECOVER TEST 6 9 HI POTENTIAL TEST 6 9 7 CO...

Page 6: ...TOC IV 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL ...

Page 7: ...PLIER TIME MULTIPLIER INSTANTANEOUS x CT INSTANTANEOUS x CT TIME 51 INST 50 A 1 2 3 4 5 6 7 8 1 2 4 8 16 100 90 80 70 60 50 40 30 20 10 B C G CLEAR OF CT BAUD ADDRESS TEST 19200 9600 2400 1200 LO LO LO LO LO HI HI HI H I H I LO LO LO LO HI HI H I H I LO HI 737 Feeder Protection Relay Introduction 1 1 Overview 1 1 1 Features Protection 3 separate phase time overcurrent 51 elements with 5 curve shap...

Page 8: ...r are provided on the front panel A momentary dry contact closure from the 735 737 relay is used to activate the breaker trip coil in the event of a fault To help determine the cause of a trip separate indicators are provided for phase instantaneous phase time overcurrent ground fault instantaneous and ground fault time overcurrent These latched indicators remain set after a breaker trip They can ...

Page 9: ... Should a fault be detected the SERVICE REQUIRED LED will light to indicate a problem In addition the failsafe SERVICE relay output will change state signalling a malfunction to a remote monitoring device such as a programmable controller In this case the 735 737 relay should be replaced and sent in for service As long as the SERVICE LED is off and the RELAY IN SERVICE LED is on the relay is opera...

Page 10: ...n 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 outpu...

Page 11: ...CHAPTER 1 INTRODUCTION 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL 1 5 FIGURE 1 1 735 Block Diagram ...

Page 12: ...de is as follows 1 2 2 Accessories The following additional accessories are available 19 1 PANEL Single cutout panel 19 2 PANEL Dual cutout panel SCI RS232 to RS485 convertor 3 Collar SR series collar 1009 0055 1 Collar SR series collar 1009 0047 Optional Mounting Kit 1819 0030 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 Rel...

Page 13: ...tting Time 35ms maximum at 150 of pickup setting GROUND TIME OVERCURRENT 51G 51N Pickup level LO 15 to 55 of CT rating in steps of 5 or OFF HI 60 to 100 of CT rating 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 Ti...

Page 14: ...E OF TRIP OUTPUT RELAYS Table 1 2 VOLTAGE MAKE CARRY BREAK MAX LOAD CONTINUOU S 0 2 S DC Resistive 30 V DC 20 A 80 A 16 A 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 1...

Page 15: ...ange 40 C to 70 C Ambient storage temperature 40 C to 80 C Humidity up to 90 non condensing LONG TERM STORAGE Environment In addition to the above environmental considerations the relay should be stored in an environment that is dry corrosive free and not in direct sunlight Correct storage Prevents premature component failures caused by environmental factors such as moisture or corrosive gases Exp...

Page 16: ...age 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 Immunity per IEC 255 22 3 160 MHz 460 MHz per EN 61000 4 3 10 V m RFI Conducted Immunity per EN 61000 4 6 10 V Temp...

Page 17: ... TIME 51 INST 50 A 1 2 3 4 5 6 7 8 1 2 4 8 16 100 90 80 70 60 50 40 30 20 10 B C G CLEAR OF CT BAUD ADDRESS TEST 19200 9600 2400 1200 LO LO LO LO LO HI HI HI H I H I LO LO LO LO HI HI H I H I LO HI 737 Feeder Protection Relay Installation 2 1 Mechanical 2 1 1 Mounting The 735 is a drawout relay that slides into the panel mounted case A hinged door covers the front panel controls to allow protected...

Page 18: ... Cutouts Remove the relay from the case during mounting see the following section Slide the case into the cutout from the front of the panel as shown below While firmly applying pressure from the front of the chassis to ensure the front bezel fits snugly bend out the retaining tabs as shown below FIGURE 2 3 Sliding the Unit into the Panel ...

Page 19: ... for rear terminal wiring Drawout Relay To remove the relay open the door by grasping the right side at the top and pulling until the friction catch releases There is a locking catch in the center of the handle With a screwdriver or your finger placed horizontally in the center squeeze the catch upwards until the catch disengages then pull the handle outward so it rotates up as shown below Firmly ...

Page 20: ...ng model of relay from being inserted into a non matching case This will prevent the relay from being inserted all the way in as a safeguard Check that the relay model matches the case type before insertion or if excessive force appears to be required FIGURE 2 6 Relay Insertion 2 1 2 Product Identification Product attributes will vary according to the configuration and options installed based on t...

Page 21: ...when inserting a relay into a case to ensure that the configuration file number is the same for both pieces 4 Mfg Date This is the date the relay was produced at the factory 5 Version No This indicates the revision of the firmware installed in the relay 6 Current Cts This indicates whether the phase CTs installed are 5 A or 1 A 7 Ground Ct This indicates whether the ground CT installed is 5 A or 1...

Page 22: ...connection schemes are possible depending on the application Typical connections are shown on the 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 ...

Page 23: ...INSTRUCTION MANUAL 2 7 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 diagram in this manual FIGURE 2 8 Typical Wiring Diagram ...

Page 24: ...es show suggested 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 ...

Page 25: ...l be connected for residual ground fault sensing as shown in the ALTERNATIVE CT WIRING section of FIGURE 2 8 Typical Wiring Diagram on page 2 7 When the drawout chassis is removed the CT secondaries are automatically connected together by the internal shorting fingers to prevent dangerous high voltages from open CTs More sensitive ground fault detection can be achieved using a core balance zero se...

Page 26: ... pickup and cause of trip See Section 3 4 2 Option Switches 14 for details 2 2 4 Communications Continuous monitoring and control of the 735 737 from a remote computer SCADA system or PLC is possible using the serial communications port terminals Two wire RS485 is the preferred standard Four wire RS422 is also available as an option RS485 data trans mission and reception are accomplished on a sing...

Page 27: ...um of 32 relays can be daisy chained together on a communication channel without exceeding the driver capability For larger systems additional serial channels must be added It is also possible to use commercially available repeaters to increase the number of relays on a single channel to more than 32 Different GE Multilin relays may be connected to the same twisted pair link providing they are all...

Page 28: ...NUAL CHAPTER 2 INSTALLATION FIGURE 2 12 RS485 Termination Note Due to address limitations only 31 735 737s can be put on a single channel However a different model of GE Multilin relay could be added to the channel increasing the number of relays to 32 ...

Page 29: ... program is connected to the 735 737 actual values and settings can be read and printed and relay operation can be simulated for 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 Multilin RS232 RS485 converter module Set the relay front panel communicatio...

Page 30: ...or the 737 to run the software See Section 3 5 Setup Program for an explanation of menu items and program operation FIGURE 2 14 RS232 485 Converter 2 2 5 Control Power Control power supplied to the 735 737 must match the switching power supply installed or damage to the unit will occur Consult the order code from the label on the side of the drawout chassis It will specify the nominal control volt...

Page 31: ...to prevent nuisance operation or damage to internal components For reliable operation both grounds must be tied directly to the ground bus bar of the switchgear which is itself connected to a solid ground Braided cable or heavy solid copper wire such as 10 gauge should be used for optimum transient protection Do not rely on a ground connection to a part of the metal switchgear enclosure because a ...

Page 32: ...NSTRUCTION MANUAL CHAPTER 2 INSTALLATION FIGURE 2 15 HI POT Testing Connections Disconnect the communications terminals and filter ground during dielectric strength testing hipot or damage to the internal surge protection devices may occur ...

Page 33: ...P OF CT CURVE SHAPE M O D ER AT E LY IN V ER S E EXTREMEL Y IN VE RS E V E RY IN V ER S E DE FI NIT E TIME NORMAL INVERSE M O D ER AT E LY IN V ER S E EXTREMEL Y IN VE RS E V E RY IN V ER S E DE FI NIT E TIME NORMAL INVERSE CURVE SHAPE TIME MULTIPLIER TIME MULTIPLIER INSTANTANEOUS x CT INSTANTANEOUS x CT TIME 51 INST 50 A 1 2 3 4 5 6 7 8 1 2 4 8 16 100 90 80 70 60 50 40 30 20 10 B C G CLEAR OF CT ...

Page 34: ...3 2 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 3 SETUP AND OPERATION FIGURE 3 1 Front Panel Controls and Indicators g 735 Feed Protection Relay ...

Page 35: ...o 220 Select the 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 ...

Page 36: ...cal time dial equivalent trip times are directly proportional to the time multiplier setting value For example all trip times on multiplier curve 10 are 10 times curve 1 Use the phase time multiplier 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 giv...

Page 37: ...e 10 x 500 5000 A FIGURE 3 5 Phase Instantaneous Trip Setting 3 2 5 Ground Pickup 5 For any ground curve shape and curve multiplier the pickup current for overcurrent timeout is determined by this control It is set as a percentage of sensor CT rating which is the phase CTs for residual sensing or the core balance CT for zero sequence sensing Read the pickup current from the inner LO band when the ...

Page 38: ... shapes can be selected for the ground 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 ground pickup setting is selected See Chapter 5 for actual curves and curve values in table form FIGURE 3 7 Ground Curve Shape Setting ...

Page 39: ...or use with computer software or manual plotting on other co ordination 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 ...

Page 40: ...3 8 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 3 SETUP AND OPERATION FIGURE 3 9 Ground Instantaneous Trip Setting ...

Page 41: ...control power or when the relay is drawn out even though the SERVICE REQUIRED indicator would be off under those conditions This is a serious condition that requires immediate attention since the relay may not respond correctly to a fault Arrangements should be made to check or replace the relay Phase Pickup When the current in any phase exceeds the PHASE PICKUP control setting this indicator flas...

Page 42: ...me overcurrent trip Phase Instantaneous A B C Trip Indicators When the current in any phase exceeds the PHASE INSTANTANEOUS setting the relay will trip and the corresponding A B or C indicator will be set to indicate a phase instantaneous trip Ground Time O C Trip If the ground neutral current exceeds the GROUND PICKUP level long enough to cause a trip according to the selected ground fault time o...

Page 43: ... select a given address set switches 3 to 7 so the indicated numbers add up to the correct address For example address 14 2 4 on 4 5 on 8 6 on with remaining switches 3 0 and 7 0 off When switch 8 TEST is on the 735 737 will accept communication commands to simulate different dial settings with computer controlled phase and ground currents for testing and training purposes Protection is disabled i...

Page 44: ...ultiplier and Phase Shift overcurrent combination to match the required curve trip times refer to the examples below for details EXAMPLE 1 The plotted curves falls on normally inverse curve number 4 Z Select CURVE SHAPE Normal Inverse TIME MULTIPLIER 4 Z Set the OPTION SWITCHES for a phase overcurrent shift of 1 switches 1 and 2 both OFF GROUND TIME OVERCURRENT SHIFT OFF OFF ground time overcurren...

Page 45: ...option switches 6 and 7 to energize on 1 PULSED TRIP ONLY In addition to the two form A common trip output contacts a separate contact for each protection element will also activate This makes the 737 the equivalent of 8 separate protection relays for interfacing to more complex protective relaying schemes Relay output contacts for the 50 51 protection element that is causing the trip operate in t...

Page 46: ...efault ANSI Selection of ANSI IAC or IEC BS142 time overcurrent curve shapes is specified with this setpoint Consult the appropriate curve in Chapter 5 to determine trip times for the selected curve Depending on the setting phase and ground curve shape dials will be defined as BLOCK INSTANTANEOUS ON AUTORECLOSE Factory Default Disabled When the 735 is used in conjunction with an autoreclose scheme...

Page 47: ...e breaker while the 86 Lockout contacts G6 H6 will latch open preventing the close coil contacts from being activated To restore the 86 Lockout contacts to the normally closed condition either the front panel CLEAR key must be pressed to clear the trip condition and indicators or a Trip Reset command must be received via the communications serial port If the 86 Lockout relay is not reset and contr...

Page 48: ...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 the desired ...

Page 49: ...ent directory and all subdirectories You can enter a file name explicitly or enter a file name with standard DOS wildcards and to filter the names appearing in the window You can use arrows to select a file name and then press Enter to open it You can also double click your left mouse button to open any file displayed in the window SETPOINTS EDITOR FILE NEW Loads factory default settings into the ...

Page 50: ... Once the required setup has been entered in the computer memory use Setpoints File Save As to save to a file for later recall and downloading to the relay being tested RETURN When using a mouse click on this menu to move cursor up to the next higher menu level This selection is the same as pressing the ESCAPE key 3 5 4 System Configuration SYSTEM CONFIGURATION PORT Enter the computer COM port tha...

Page 51: ...panel indicators It shows status pickup cause of trip indicators and the current bargraph The computer screen information is constantly updated to agree with the relay front panel indications 3 5 6 Actual Values ACTUAL VALUES METERED DATA Actual phase A B C and ground current being measured by the relay are displayed If the relay is in simulation mode the displayed current will be the programmed s...

Page 52: ...OINTS 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 must be ON for the setpoints to be used 3 5 8 Commands COMMANDS RESET Clear the trip target indicators on the front of the relay if any are set by executing this command It has ...

Page 53: ...tion timeout begins as soon as the relay receives the command over the serial communications link 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...

Page 54: ... or reading off a trip time point for a given shape Assuming an ANSI Normal Inverse curve with a trip time of 1 second at 4 PU this is curve multiplier 2 Set the PHASE TIME MULTIPLIER to 2 Set phase o c curve shift to 1 option switches 2 OFF 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 ...

Page 55: ...TIME MULTIPLIER to 2 Set ground time o c shift option switches 4 OFF 3 OFF Ground Instantaneous Trip None Only the 200 ms delayed pickup of 240 A is required so set the GROUND INSTANTANEOUS dial to OFF Slave address 10 Baud rate 9600 For 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 communicati...

Page 56: ...3 24 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 3 SETUP AND OPERATION ...

Page 57: ...ire RS485 or four wire RS422 communication interfaces are available RS485 being the preferred type with RS422 available as an option The 735 737 implements a subset of the AEG Modicon Modbus serial communication standard Modbus protocol is hardware independent The 735 737 supports RS485 and RS422 hardware configurations Modbus is a single master multiple slave type of protocol suitable for a multi...

Page 58: ...ames are not supported by some modems at bit rates of greater than 300 bps Although Modbus protocol can be implemented at any standard communication speed the 735 737 supports operation at 1200 2400 9600 and 19200 baud by front panel switch selection 4 1 4 Data Packet Format A complete request response sequence consists of the following bytes transmitted as separate data frames Master Request Tran...

Page 59: ...half character times elapse without receiving a new character or completion of the message then the communication link must be reset that is all slaves start listening for a new transmission from the master Thus at 9600 baud a delay of greater than 3 5 1 9600 10 3 6 ms will cause the communication link to be reset 4 1 6 Error Checking The RTU version of Modbus includes a two byte CRC 16 16 bit cyc...

Page 60: ...ithm data transfer A 16 bit working register AL low order byte of A AH high order byte of A CRC 16 bit CRC 16 value i j loop counters logical exclusive or operator Di ith data byte i 0 to N 1 G 16 bit characteristic polynomial 1010000000000001 with the MSbit dropped and bit order reversed shr x shift right the LSbit of the low order byte of x shifts into a carry flag a 0 is shifted into the MSbit ...

Page 61: ...oints are sent as two bytes This function code allows the master to read setpoints from a slave device The slave response is the slave address function 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 transmissi...

Page 62: ...de 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 slave 11 to respond with 1 actual value starting at address 0008 For this example the actual value in this address 0008 is 01AE CRC 2 CRC calculated by the master SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION SLAVE ADDRESS 1...

Page 63: ...s lost The relay may behave erratically if invalid values are loaded into setpoint memory To turn on relays LEDs and the bargraph under computer control for testing purposes the appropriate I O test patterns are first loaded as setpoints 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 setpoin...

Page 64: ...value 039E in setpoint address 0049 After the transmission in this example is complete setpoints address 0049 will contain the value 039E Table 4 5 MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION SLAVE ADDRESS 1 11 message for slave 11 FUNCTION CODE 1 05 execute operation OPERATION CODE 2 00 01 operation code 1 clear trip indicators CODE VALUE 2 FF 00 perform function CRC 2 CRC calculated by the mas...

Page 65: ...status is stored in actual values memory map location 0014H Assume the value is 01101101b 4 2 7 Function Code 16 Store Multiple Setpoints Modbus Implementation Preset Multiple Registers 735 737 Implementation Store Multiple Setpoints SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION SLAVE ADDRESS 1 11 response message from slave 11 FUNCTION CODE 1 06 store single setpoint DATA STARTING ADDRESS 2 00 49 setp...

Page 66: ...command REMOTE SETTINGS is also sent front panel dial settings will be replaced by the previously sent dial setpoints These values continue to be used until control power is removed or commands 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 t...

Page 67: ...RANSMISSION BYTES EXAMPLE DESCRIPTION SLAVE ADDRESS 1 11 message for slave 11 FUNCTION CODE 1 10 store setpoint block DATA STARTING ADDRESS 2 00 60 first setpoint address 0060h NUMBER OF SETPOINTS 2 00 0A 10 setpoints DATA BYTE COUNT 1 14 20 bytes of setpoint data DATA 1 2 00 06 phase pickup position 6 DATA 2 2 00 05 phase shape position 5 DATA 3 2 00 07 phase time multiplier 7 DATA 4 2 00 01 phas...

Page 68: ...an CRC error will be SLAVE ADDRESS 1 byte FUNCTION CODE 1 byte with MSbit set to 1 EXCEPTION CODE 1 byte CRC 2 bytes The 735 737 implements the following exception response codes 01 ILLEGAL FUNCTION The function code transmitted is not one of the functions supported by the 735 737 02 ILLEGAL DATA ADDRESS The address referenced in the data field transmitted by the master is not an allowable address...

Page 69: ...ll as format tables following the memory map for interpretation of register values Table 4 10 735 737 MODBUS MEMORY MAP Sheet 1 of 4 GROUP ADD R DESCRIPTION RANGE STE P UNITS FORMAT FACTORY DEFAULT PRODUCT ID 0000 GE 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 modificat...

Page 70: ...1 to 10 1 dial F107 0030 Ground Time Multiplier dial setting 1 to 10 1 dial F112 0031 Ground Instantaneous dial setting 1 to 10 1 dial F111 0032 Comm DIP switch setting F102 0033 Curve shift switch setting F114 0034 Reset switch status 0 1 1 1 on F1 0035 Not used 004F Not used SETPOINTS DIAL SETTINGS FOR SIMULATION AND TEST I O 0050 Phase Pickup dial Remote 1 to 19 1 dial F108 0 0051 Phase Curve S...

Page 71: ...I O Bits F103 0 005D LED Test I O Bits F105 0 005E Bargraph Test I O Bits F106 0 005F Curve shift switch Bits F114 0 CUSTOM SCHEME 0060 Curve Shape 0 to 2 1 F116 0 0061 Block Instantaneous 0 to 180 1 0 OFF F117 OFF 0062 Aux Trip Relay 0 to 2 1 F118 0 Table 4 10 735 737 MODBUS MEMORY MAP Sheet 3 of 4 GROUP ADD R DESCRIPTION RANGE STE P UNITS FORMAT FACTORY DEFAULT ...

Page 72: ...01 STATUS BYTE XXXX XXXX XXXX XXX1 Phase A pickup XXXX XXXX XXXX XX1X Phase B pickup XXXX XXXX XXXX X1XX Phase C pickup XXXX XXXX XXXX 1XXX Ground pickup XXXX XXXX XXX1 XXXX Relay in service XXXX XXXX XX1X XXXX Service required XXXX XXXX X1XX XXXX Test mode XXXX XXXX 1XXX XXXX Relay tripped XXXX XXX1 XXXX XXXX not used XXXX XX1X XXXX XXXX not used XXXX X1XX XXXX XXXX not used XXXX 1XXX XXXX XXXX n...

Page 73: ...ed XXXX XXXX XXX1 XXXX not used XXXX XXXX XX1X XXXX not used XXXX XXXX X1XX XXXX not used XXXX XXXX 1XXX XXXX not used F103 ctd 737 OUTPUT RELAYS XXXX XXX1 XXXX XXXX Phase A time OC pickup trip 51P A XXXX XX1X XXXX XXXX Phase B time OC pickup trip 51P B XXXX X1XX XXXX XXXX Phase C time OC pickup trip 51P C XXXX 1XXX XXXX XXXX Ground time OC pickup trip 51G XXX1 XXXX XXXX XXXX Phase A nest pickup t...

Page 74: ...X Relay in service LED on 1 XXXX 1XXX XXXX XXXX Service required LED on 1 F106 BARGRAPH ACTUAL VALUE XXXX XXXX XXXX XXX1 100 indicator on 1 XXXX XXXX XXXX XX1X 90 indicator on 1 XXXX XXXX XXXX X1XX 80 indicator on 1 XXXX XXXX XXXX 1XXX 70 indicator on 1 XXXX XXXX XXX1 XXXX 60 indicator on 1 XXXX XXXX XX1X XXXX 50 indicator on 1 XXXX XXXX X1XX XXXX 40 indicator on 1 XXXX XXXX 1XXX XXXX 30 indicator...

Page 75: ... 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 11 735 737 MEMORY MAP DATA FORMATS Sheet 4 of 6 FORMA T TYPE DESCRIPTION ...

Page 76: ...UNICATIONS F110 ctd 60 11 65 12 70 13 75 14 80 15 85 16 90 17 95 18 100 19 F111 GROUND INST DIAL OFF 1 0 1 2 0 2 3 0 4 4 0 8 5 1 6 2 7 4 8 8 9 16 10 F112 TIME MULTIPLIER DIAL 1 1 2 2 3 3 4 4 5 5 6 6 Table 4 11 735 737 MEMORY MAP DATA FORMATS Sheet 5 of 6 FORMA T TYPE DESCRIPTION ...

Page 77: ...ip F114 CURVE SHIFT SETPOINT XXXX XXXX XXXX XXX1 Switch 8 on 1 XXXX XXXX XXXX XX1X Switch 7 on 1 XXXX XXXX XXXX X1XX Switch 6 on 1 XXXX XXXX XXXX 1XXX Switch 5 on 1 XXXX 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 availa...

Page 78: ...4 22 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 4 MODBUS COMMUNICATIONS ...

Page 79: ... D ER AT E LY IN V ER S E EXTREMEL Y IN VE RS E V E RY IN V ER S E DE FI NIT E TIME NORMAL INVERSE CURVE SHAPE TIME MULTIPLIER TIME MULTIPLIER INSTANTANEOUS x CT INSTANTANEOUS x CT TIME 51 INST 50 A 1 2 3 4 5 6 7 8 1 2 4 8 16 100 90 80 70 60 50 40 30 20 10 B C G CLEAR OF CT BAUD ADDRESS TEST 19200 9600 2400 1200 LO LO LO LO LO HI HI HI H I H I LO LO LO LO HI HI H I H I LO HI 737 Feeder Protection ...

Page 80: ...UCTION MANUAL CHAPTER 5 OVERCURRENT CURVES 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 current setpoint CT CT secondary that is1 or 5 A Per Unit I I0 I Ipu 100 CT ...

Page 81: ...6 58 466 8 106 4 544 2 866 2 291 1 994 1 812 1 689 1 600 1 532 1 479 1 326 1 252 7 68 210 9 457 5 302 3 343 2 672 2 327 2 114 1 970 1 866 1 788 1 726 1 547 1 461 8 77 954 10 807 6 059 3 821 3 054 2 659 2 416 2 252 2 133 2 043 1 972 1 768 1 669 9 87 699 12 158 6 817 4 298 3 436 2 991 2 718 2 533 2 400 2 298 2 219 1 989 1 878 10 97 443 13 509 7 574 4 776 3 818 3 324 3 020 2 815 2 666 2 554 2 465 2 2...

Page 82: ...10 77 954 10 807 6 059 3 821 3 054 2 659 2 416 2 252 2 133 2 043 1 972 1 768 1 669 1 1 1 10 719 1 486 0 833 0 525 0 420 0 366 0 332 0 310 0 293 0 281 0 271 0 243 0 230 2 21 437 2 972 1 666 1 051 0 840 0 731 0 664 0 619 0 587 0 562 0 542 0 486 0 459 3 32 156 4 458 2 499 1 576 1 260 1 097 0 997 0 929 0 880 0 843 0 814 0 729 0 689 4 42 875 5 944 3 333 2 101 1 680 1 462 1 329 1 239 1 173 1 124 1 085 0...

Page 83: ...STRUCTION MANUAL 5 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 84: ...10 593 4 523 3 076 2 440 2 067 1 811 1 622 1 475 1 356 0 988 0 795 7 120 600 29 989 12 359 5 277 3 589 2 847 2 411 2 113 1 893 1 721 1 582 1 153 0 928 8 137 829 34 273 14 124 6 031 4 101 3 254 2 755 2 415 2 163 1 966 1 808 1 317 1 060 9 155 058 38 557 15 890 6 785 4 614 3 661 3 100 2 717 2 433 2 212 2 034 1 482 1 193 10 172 286 42 841 17 656 7 539 5 127 4 067 3 444 3 019 2 704 2 458 2 260 1 647 1 ...

Page 85: ... 137 829 34 273 14 124 6 031 4 101 3 254 2 755 2 415 2 163 1 966 1 808 1 317 1 060 1 1 1 18 952 4 713 1 942 0 829 0 564 0 447 0 379 0 332 0 297 0 270 0 249 0 181 0 146 2 37 903 9 425 3 884 1 659 1 128 0 895 0 758 0 664 0 595 0 541 0 497 0 362 0 292 3 56 855 14 138 5 826 2 488 1 692 1 342 1 137 0 996 0 892 0 811 0 746 0 543 0 437 4 75 806 18 850 7 768 3 317 2 256 1 790 1 515 1 328 1 190 1 082 0 994...

Page 86: ...PTER 5 OVERCURRENT CURVES 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 87: ... 7 951 3 221 2 047 1 559 1 297 1 133 1 020 0 937 0 874 0 696 0 612 7 83 583 21 939 9 276 3 758 2 388 1 819 1 513 1 321 1 190 1 093 1 020 0 812 0 714 8 95 523 25 073 10 602 4 295 2 730 2 079 1 729 1 510 1 360 1 250 1 165 0 928 0 815 9 107 464 28 207 11 927 4 832 3 071 2 339 1 945 1 699 1 530 1 406 1 311 1 044 0 917 10 119 404 31 341 13 252 5 369 3 412 2 599 2 161 1 888 1 700 1 562 1 457 1 160 1 019...

Page 88: ...95 523 25 073 10 602 4 295 2 730 2 079 1 729 1 510 1 360 1 250 1 165 0 928 0 815 1 1 1 13 134 3 448 1 458 0 591 0 375 0 286 0 238 0 208 0 187 0 172 0 160 0 128 0 112 2 26 269 6 895 2 915 1 181 0 751 0 572 0 475 0 415 0 374 0 344 0 320 0 255 0 224 3 39 403 10 343 4 373 1 772 1 126 0 858 0 713 0 623 0 561 0 515 0 481 0 383 0 336 4 52 538 13 790 5 831 2 362 1 501 1 144 0 951 0 831 0 748 0 687 0 641 0...

Page 89: ...LAY INSTRUCTION MANUAL 5 11 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 90: ... 10 466 3 956 2 208 1 484 1 113 0 894 0 754 0 658 0 589 0 422 0 358 7 103 224 28 006 12 210 4 616 2 576 1 732 1 298 1 043 0 880 0 768 0 688 0 492 0 418 8 117 970 32 007 13 955 5 275 2 944 1 979 1 483 1 192 1 006 0 878 0 786 0 562 0 477 9 132 716 36 008 15 699 5 934 3 312 2 227 1 669 1 341 1 131 0 987 0 884 0 632 0 537 10 147 462 40 009 17 443 6 594 3 680 2 474 1 854 1 491 1 257 1 097 0 982 0 703 0...

Page 91: ... 117 970 32 007 13 955 5 275 2 944 1 979 1 483 1 192 1 006 0 878 0 786 0 562 0 477 1 1 1 16 221 4 401 1 919 0 725 0 405 0 272 0 204 0 164 0 138 0 121 0 108 0 077 0 066 2 32 442 8 802 3 838 1 451 0 809 0 544 0 408 0 328 0 277 0 241 0 216 0 155 0 131 3 48 663 13 203 5 756 2 176 1 214 0 816 0 612 0 492 0 415 0 362 0 324 0 232 0 197 4 64 883 17 604 7 675 2 901 1 619 1 089 0 816 0 656 0 553 0 483 0 432...

Page 92: ...R 5 OVERCURRENT CURVES 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 93: ... 700 0 700 0 700 0 700 0 700 0 700 0 700 0 700 0 700 0 700 0 700 0 700 8 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 9 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 0 900 10 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 0 5 1 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 0 050 2 0 ...

Page 94: ...720 10 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 0 800 1 1 1 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 0 110 2 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 0 220 3 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 0 330 4 0 440 0 440 0 440 0 440 0 440 0 440 0 440 0 440 0 440 0 440 0 440 0 4...

Page 95: ...N RELAY INSTRUCTION MANUAL 5 17 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 96: ... 6 2 742 0 859 0 569 0 419 0 368 0 341 0 325 0 314 0 307 0 301 0 296 0 282 0 276 7 3 199 1 002 0 664 0 489 0 429 0 398 0 380 0 367 0 358 0 351 0 345 0 329 0 322 8 3 656 1 145 0 759 0 559 0 490 0 455 0 434 0 419 0 409 0 401 0 394 0 376 0 368 9 4 113 1 288 0 853 0 629 0 552 0 512 0 488 0 472 0 460 0 451 0 444 0 423 0 413 10 4 570 1 431 0 948 0 699 0 613 0 569 0 542 0 524 0 511 0 501 0 493 0 470 0 45...

Page 97: ...331 10 3 656 1 145 0 759 0 559 0 490 0 455 0 434 0 419 0 409 0 401 0 394 0 376 0 368 1 1 1 0 503 0 157 0 104 0 077 0 067 0 063 0 060 0 058 0 056 0 055 0 054 0 052 0 051 2 1 005 0 315 0 209 0 154 0 135 0 125 0 119 0 115 0 112 0 110 0 108 0 103 0 101 3 1 508 0 472 0 313 0 231 0 202 0 188 0 179 0 173 0 169 0 165 0 163 0 155 0 152 4 2 011 0 630 0 417 0 307 0 270 0 250 0 239 0 231 0 225 0 220 0 217 0 2...

Page 98: ...ANUAL CHAPTER 5 OVERCURRENT CURVES 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 99: ...1 4 496 3 192 2 656 2 353 2 158 2 022 1 921 1 843 1 781 1 599 1 510 7 66 028 8 087 5 246 3 724 3 098 2 745 2 518 2 359 2 241 2 150 2 078 1 866 1 761 8 75 461 9 242 5 995 4 256 3 541 3 138 2 878 2 695 2 561 2 457 2 375 2 133 2 013 9 84 893 10 397 6 744 4 788 3 983 3 530 3 237 3 032 2 881 2 765 2 672 2 399 2 265 10 94 326 11 552 7 494 5 320 4 426 3 922 3 597 3 369 3 201 3 072 2 969 2 666 2 516 0 5 1...

Page 100: ... 10 75 461 9 242 5 995 4 256 3 541 3 138 2 878 2 695 2 561 2 457 2 375 2 133 2 013 1 1 1 10 376 1 271 0 824 0 585 0 487 0 431 0 396 0 371 0 352 0 338 0 327 0 293 0 277 2 20 752 2 542 1 649 1 170 0 974 0 863 0 791 0 741 0 704 0 676 0 653 0 586 0 554 3 31 128 3 812 2 473 1 756 1 461 1 294 1 187 1 112 1 056 1 014 0 980 0 880 0 830 4 41 503 5 083 3 297 2 341 1 947 1 726 1 583 1 483 1 409 1 352 1 306 1...

Page 101: ...RELAY INSTRUCTION MANUAL 5 23 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 102: ... 872 3 225 2 061 1 598 1 359 1 215 1 117 1 046 0 992 0 840 0 766 7 61 475 20 308 9 185 3 762 2 404 1 864 1 586 1 417 1 303 1 221 1 158 0 980 0 894 8 70 257 23 209 10 497 4 299 2 747 2 131 1 813 1 620 1 490 1 395 1 323 1 120 1 022 9 79 040 26 111 11 809 4 837 3 091 2 397 2 039 1 822 1 676 1 570 1 489 1 260 1 150 10 87 822 29 012 13 121 5 374 3 434 2 663 2 266 2 025 1 862 1 744 1 654 1 400 1 277 0 5...

Page 103: ...0 70 257 23 209 10 497 4 299 2 747 2 131 1 813 1 620 1 490 1 395 1 323 1 120 1 022 1 1 1 9 660 3 191 1 443 0 591 0 378 0 293 0 249 0 223 0 205 0 192 0 182 0 154 0 141 2 19 321 6 383 2 887 1 182 0 756 0 586 0 498 0 445 0 410 0 384 0 364 0 308 0 281 3 28 981 9 574 4 330 1 773 1 133 0 879 0 748 0 668 0 614 0 576 0 546 0 462 0 422 4 38 642 12 765 5 773 2 365 1 511 1 172 0 997 0 891 0 819 0 767 0 728 0...

Page 104: ...NUAL CHAPTER 5 OVERCURRENT CURVES 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 105: ...8 990 3 635 2 133 1 474 1 115 0 893 0 743 0 636 0 556 0 343 0 250 7 99 740 23 785 10 488 4 241 2 489 1 720 1 301 1 042 0 867 0 742 0 648 0 400 0 292 8 113 989 27 183 11 987 4 846 2 844 1 966 1 487 1 191 0 991 0 848 0 741 0 457 0 334 9 128 237 30 581 13 485 5 452 3 200 2 212 1 673 1 340 1 115 0 954 0 834 0 514 0 375 10 142 486 33 979 14 983 6 058 3 555 2 457 1 859 1 488 1 239 1 060 0 926 0 571 0 41...

Page 106: ... 113 989 27 183 11 987 4 846 2 844 1 966 1 487 1 191 0 991 0 848 0 741 0 457 0 334 1 1 1 15 673 3 738 1 648 0 666 0 391 0 270 0 204 0 164 0 136 0 117 0 102 0 063 0 046 2 31 347 7 475 3 296 1 333 0 782 0 541 0 409 0 327 0 272 0 233 0 204 0 126 0 092 3 47 020 11 213 4 945 1 999 1 173 0 811 0 613 0 491 0 409 0 350 0 306 0 188 0 138 4 62 694 14 951 6 593 2 665 1 564 1 081 0 818 0 655 0 545 0 466 0 408...

Page 107: ...Y INSTRUCTION MANUAL 5 29 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 108: ... 344 0 325 0 309 0 262 0 239 7 0 7 17 923 2 140 1 246 0 782 0 616 0 527 0 471 0 431 0 402 0 379 0 361 0 306 0 278 8 0 8 20 484 2 445 1 424 0 894 0 704 0 602 0 538 0 493 0 459 0 433 0 412 0 350 0 318 9 0 9 23 044 2 751 1 602 1 005 0 792 0 678 0 605 0 554 0 516 0 487 0 464 0 393 0 358 10 1 0 25 604 3 057 1 780 1 117 0 880 0 753 0 672 0 616 0 574 0 541 0 515 0 437 0 398 0 5 1 0 1 1 280 0 153 0 089 0 ...

Page 109: ...4 0 894 0 704 0 602 0 538 0 493 0 459 0 433 0 412 0 350 0 318 1 1 1 0 1 2 816 0 336 0 196 0 123 0 097 0 083 0 074 0 068 0 063 0 060 0 057 0 048 0 044 2 0 2 5 633 0 672 0 392 0 246 0 194 0 166 0 148 0 135 0 126 0 119 0 113 0 096 0 087 3 0 3 8 449 1 009 0 587 0 369 0 290 0 248 0 222 0 203 0 189 0 179 0 170 0 144 0 131 4 0 4 11 266 1 345 0 783 0 492 0 387 0 331 0 296 0 271 0 252 0 238 0 227 0 192 0 1...

Page 110: ... 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 111: ... 504 1 371 7 0 7 100 380 12 023 7 016 4 421 3 492 2 995 2 679 2 457 2 293 2 165 2 063 1 755 1 599 8 0 8 114 720 13 740 8 018 5 052 3 991 3 423 3 061 2 808 2 620 2 474 2 357 2 005 1 828 9 0 9 129 060 15 458 9 020 5 684 4 490 3 851 3 444 3 159 2 948 2 783 2 652 2 256 2 056 10 1 0 143 400 17 175 10 022 6 315 4 989 4 279 3 827 3 510 3 275 3 093 2 947 2 507 2 284 0 5 1 0 1 7 170 0 859 0 501 0 316 0 249...

Page 112: ...5 052 3 991 3 423 3 061 2 808 2 620 2 474 2 357 2 005 1 828 1 1 1 0 1 15 774 1 889 1 102 0 695 0 549 0 471 0 421 0 386 0 360 0 340 0 324 0 276 0 251 2 0 2 31 548 3 779 2 205 1 389 1 098 0 941 0 842 0 772 0 721 0 680 0 648 0 552 0 503 3 0 3 47 322 5 668 3 307 2 084 1 646 1 412 1 263 1 158 1 081 1 021 0 972 0 827 0 754 4 0 4 63 096 7 557 4 410 2 779 2 195 1 883 1 684 1 545 1 441 1 361 1 297 1 103 1 ...

Page 113: ...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 114: ...579 0 428 7 0 7 189 007 18 903 9 452 4 723 3 146 2 359 1 886 1 572 1 347 1 179 1 048 0 675 0 499 8 0 8 216 008 21 603 10 802 5 398 3 596 2 696 2 156 1 796 1 540 1 347 1 198 0 772 0 570 9 0 9 243 009 24 303 12 152 6 073 4 045 3 032 2 425 2 021 1 732 1 516 1 348 0 868 0 641 10 1 0 270 010 27 004 13 503 6 747 4 495 3 369 2 695 2 245 1 924 1 684 1 497 0 964 0 713 0 5 1 0 1 13 500 1 350 0 675 0 337 0 2...

Page 115: ...5 398 3 596 2 696 2 156 1 796 1 540 1 347 1 198 0 772 0 570 1 1 1 0 1 29 701 2 970 1 485 0 742 0 494 0 371 0 296 0 247 0 212 0 185 0 165 0 106 0 078 2 0 2 59 402 5 941 2 971 1 484 0 989 0 741 0 593 0 494 0 423 0 371 0 329 0 212 0 157 3 0 3 89 103 8 911 4 456 2 227 1 483 1 112 0 889 0 741 0 635 0 556 0 494 0 318 0 235 4 0 4 118 804 11 882 5 941 2 969 1 978 1 483 1 186 0 988 0 847 0 741 0 659 0 424 ...

Page 116: ... 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 117: ... 0 123 7 0 7 546 343 44 802 18 668 7 000 3 732 2 332 1 599 1 166 0 888 0 700 0 566 0 252 0 143 8 0 8 624 392 51 202 21 335 7 999 4 265 2 665 1 827 1 332 1 015 0 800 0 647 0 288 0 164 9 0 9 702 441 57 602 24 002 8 999 4 798 2 998 2 055 1 499 1 142 0 900 0 727 0 324 0 184 10 1 0 780 490 64 002 26 669 9 999 5 331 3 331 2 284 1 665 1 269 1 000 0 808 0 360 0 204 0 5 1 0 1 39 024 3 200 1 333 0 500 0 267...

Page 118: ... 7 999 4 265 2 665 1 827 1 332 1 015 0 800 0 647 0 288 0 164 1 1 1 0 1 85 854 7 040 2 934 1 100 0 586 0 366 0 251 0 183 0 140 0 110 0 089 0 040 0 022 2 0 2 171 708 14 080 5 867 2 200 1 173 0 733 0 502 0 366 0 279 0 220 0 178 0 079 0 045 3 0 3 257 562 21 121 8 801 3 300 1 759 1 099 0 754 0 549 0 419 0 330 0 267 0 119 0 067 4 0 4 343 416 28 161 11 734 4 400 2 346 1 466 1 005 0 733 0 558 0 440 0 356 ...

Page 119: ...GURE 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 120: ...5 42 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 5 OVERCURRENT CURVES ...

Page 121: ...ting current through the phase and ground CTs To do this a primary high current test set is required The operation of the entire system including CTs and wiring can then be checked If this equipment is not available secondary injection tests can be performed to check everything except the CTs This procedure is described in the following sections 6 1 2 Secondary Injection Testing Single phase secon...

Page 122: ...taneous Phase Overcurrent Pickup Level Test Set the phase pickup dial to OFF Set the phase instantaneous dial to the desired level Usually a low and a high value are tested i e 4 x CT and 14 x CT Using the 3 phase Test Set slowly increase the phase current injected until the trip or auxiliary relay if assigned is activated and the corresponding LED illuminated Verify that the injected current at t...

Page 123: ...he phase instantaneous dial to the desired level Using the 3 phase Test Set inject current equal to or above the instantaneous level setting The 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 INST 50 phase A B or C whichever phase tested LED has been activated and latched ...

Page 124: ...e 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 whichever 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 Note The more inverse the curve the more accurate the current source req...

Page 125: ...ground and communications H8 H9 H10 G9 G10 can be hi pot tested All remaining terminals except safety ground G12 should be connected together and the test performed with respect to safety ground Make sure to disconnect the filter ground G11 before performing this test Refer to Section 2 2 7 Hi pot Testing for more information ...

Page 126: ...ng Accuracy Test Table 6 1 MODEL NUMBER DATE FIRMWARE NUMBER TESTED BY SERIAL NUMBER STATION CIRCUIT Table 6 2 TYPE OF COMMUNICATIONS ESTABLISHED STATUS Table 6 3 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 ...

Page 127: ...ickup Test Table 6 4 GROUND LEVEL INPUT CURRENT CT MEASURED CURRENT CT STATUS GROUND CURRENT LOW END GROUND CURRENT MID RANGE GROUND CURRENT HIGH END Table 6 5 PHASE AND LEVEL DIAL SETTING xCT INPUT 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 Table 6 6 PHASE AND LEVEL DIAL SETTING xCT INPUT CURRENT STATUS GROUND LOW END GROUND H...

Page 128: ...SE 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 END 35 Table 6 8 GROUND LEVEL DIAL SETTING xCT INPUT CURRENT EXPECTED TIME ms MEASURED TIME ms STATUS GROUND LOW END 35 GROUND HIGH END 35 Table 6 9 PICKUP LEVEL CURVE SHAPE TIME MULT TIME SHIFT INPUT CURR...

Page 129: ...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 for details Table 6 10 PICKUP LEVEL CURVE SHAPE TIME MULT TIME SHIFT INPUT CURRENT EXPECTED TIME MEASURED TIME STATUS Table 6 11 POWER FAIL RECOVERY LEVEL V MEASURED LEVEL V STATUS FAIL RECOVER Table 6 12 HIPOT LEVEL kV DURATION STATUS ...

Page 130: ...6 10 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL CHAPTER 6 TESTING ...

Page 131: ...XTREMEL Y IN VE RS E V E RY IN V ER S E DE FI NIT E TIME NORMAL INVERSE CURVE SHAPE TIME MULTIPLIER TIME MULTIPLIER INSTANTANEOUS x CT INSTANTANEOUS x CT TIME 51 INST 50 A 1 2 3 4 5 6 7 8 1 2 4 8 16 100 90 80 70 60 50 40 30 20 10 B C G CLEAR OF CT BAUD ADDRESS TEST 19200 9600 2400 1200 LO LO LO LO LO HI HI HI H I H I LO LO LO LO HI HI H I H I LO HI 737 Feeder Protection Relay Commissioning 7 1 Set...

Page 132: ...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 Pickup Pickup and Latched 737 only Custom Scheme Disabled Enabled Custom Scheme Time Overcurrent Curve Shape ANSI IAC BS142 Custom Scheme Block Instantaneous on Autoreclose Disabled Enabled Custom Scheme Aux Trip Relay Main Trip 86 Lockout Ground Trip COMMU...

Page 133: ...O LO LO HI HI H I H I LO HI 737 Feeder Protection Relay APPENDIX A 1 Overcurrent Protection Sample Calculations A 1 1 Characteristics Overcurrent Protection for a 13 8 kV Feeder from Short Circuit Study Feeder rating 600 A CT Ratio 600 5 Maximum load on feeder 546 A Fault current for a 3 phase fault at the feeder end 2800 A Fault current for a ground fault at the feeder end 1100 A The relay pickup...

Page 134: ...of single phase taps between the three phases Typical maximum unbalance permitted is 20 of feeder rating in this case 120 A 0 20 600 The relay must also operate for a ground fault at the feeder end Primary ground pickup level 240 A 120 pickup level 1100 Secondary ground current pickup level 240 A 5 600 2 A Ground Pickup dial setting 2 A 5 A 100 40 From coordination study obtain curve shape and tim...

Page 135: ...ng 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 cur...

Page 136: ...nd 16 For more information refer to Chapter 4 COMMUNICATIONS RS485 communications was chosen to be used with the 735 737 because it allows communications over long distances of up to 4000 ft Care however must be taken to ensure reliable trouble free operation A shielded twisted pair preferably a 24 gauge Belden 9841 type or 120 equivalent must be used and routed away from power carrying cables suc...

Page 137: ...link Other devices could however be used as well on the link though RS485 connections are made from the 735 737 terminal to other devices B or terminals and from the terminal to other devices A or terminals 4 Ground CTs It should be noted that the 735 737 does not accept the GE Multilin 2000 1 CT which is actually a 50 0 025 CT Only CTs with 5 A or 1 A secondaries may be used 5 Front Panel Control...

Page 138: ... 0048 DA 25D152D1 000 06 06 1995 1601 0048 DB 25D152D1 000 12 07 2000 1601 0048 DC 25D152D1 000 02 15 2001 1601 0048 DD 25D153D1 000 04 18 2001 1601 0048 DE 25D154D1 000 08 13 2001 1601 0048 DF 25D156D1 000 09 30 2005 1601 0048 DG 25D156D1 000 07 20 2006 1601 0048 DH 25D156D1 000 02 09 2008 1601 0048 DJ 25D156D1 000 04 02 2008 1601 0048 DK 25D156D1 000 05 31 2010 Table A 1 Major Updates for 735 Re...

Page 139: ...RY 735 737 FEEDER PROTECTION RELAY INSTRUCTION MANUAL A 7 Table A 3 Major Updates for 735 Revision DH PAGE DG SECT DH CHANGE DESCRIPTION Title Title Update Manual part number to 1601 0048 DH General Update Minor structural updates ...

Page 140: ...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 misuse negligence accident incorrect installation or use not in accordance with instructions nor any unit that has been altered outside a GE Multilin auth...

Page 141: ... ANSI EXTREMELY INVERSE CURVES 5 12 5 14 ANSI MODERATELY INVERSE CURVES 5 3 5 5 ANSI NORMAL INVERSE CURVES 5 6 5 8 ANSI VERY INVERSE CURVES 5 9 5 11 AUTORECLOSE 3 14 B BACKUP WIRING core balance 2 8 residual 2 9 BLOCK DIAGRAM 1 5 BLOCK INSTANTANEOUS ON AUTORECLOSE 3 14 BURDEN 1 8 BUSY REJECTED MESSAGE ERROR 4 12 C CLEAR TRIP RECORD 3 20 COMMANDS 3 20 3 21 Modbus 4 7 COMMISSIONING 7 1 COMMUNICATION...

Page 142: ...NT TRANSFORMERS see CTs CURVE SHAPE CONTROLS 3 3 CURVES 5 1 CUSTOM SCHEME 3 14 3 20 D DATA FORMATS FOR MEMORY MAP 4 16 DATA FRAME FORMAT 4 2 DATA FRAME RATE 4 2 DATA PACKET FORMAT 4 2 DEFINITE TIME CURVES 5 15 5 17 DESCRIPTION 1 2 5 1 5 15 DIAL SIMULATION 3 20 DIELECTRIC STRENGTH TESTING 2 15 2 16 DIMENSIONS 2 2 DISABLE TRIP RELAYS 3 20 DRAWOUT RELAY 2 3 E ELECTRICAL INSTALLATION 2 6 ENABLE TRIP R...

Page 143: ...ier 3 7 multiplier shift 3 13 pickup 3 5 3 6 3 9 shape 3 6 specifications 1 7 trip 3 10 H HI POT TESTING 2 15 2 16 6 5 6 9 I IAC CURVES 5 1 5 18 IAC EXTREMELY INVERSE CURVES 5 27 5 29 IAC INVERSE CURVES 5 21 5 23 IAC SHORT INVERSE CURVES 5 18 5 20 IAC VERY INVERSE CURVES 5 24 5 26 IEC A CURVES 5 33 5 35 IEC B CURVES 5 36 5 38 IEC C CURVES 5 39 5 41 IEC CURVES 5 30 IEC SHORT TIME CURVES 5 30 5 32 I...

Page 144: ...ns 4 5 MOUNTING 2 1 MOUNTING TABS 2 3 MULTI CHANNEL RELAYING 2 13 O OPERATING TEMPERATURE 1 9 OPTION SWITCHES 3 11 ORDER CODES 1 6 OUTPUT RELAYS aux trip relay 3 14 cause of trip relay 3 13 description 2 10 disable trip relays 3 20 enable trip relays 3 20 main trip relay 3 14 pickup relay 3 13 specifications 1 8 OUTPUTS specifications 1 8 OVERCURRENT see entries for PHASE TIME GROUND TIME PHASE IN...

Page 145: ...T 6 4 POWER SUPPLY specifications 1 9 PRIMARY INJECTION TESTING 6 1 PRODUCT IDENTIFICATION 2 4 PROTECTION features 1 1 specifications 1 7 R RELAY IN SERVICE 3 9 RELAY SETTINGS 7 1 RESIDUAL BACKUP WIRING 2 9 REVISON HISTORY A 6 RS232 485 CONVERTER 2 14 RS485 CONNECTION 2 11 RS485 TERMINATION 2 12 S SAMPLE CALCULATIONS A 1 SECONDARY INJECTION TESTING 6 1 SERVICE 3 9 SETPOINTS 3 20 reading with Modbu...

Page 146: ...15 T TEMPERATURE 1 9 TEST RECORDS 6 6 TEST SETUP 6 3 TESTING 6 1 THEORY OF OPERATION 1 3 TIMING 4 3 TRIP INDICATORS 3 9 TRIP RECORD CLEARING 3 20 TRIP RECORD PRINTING 3 21 TRIP RELAYS DISABLING 3 20 TRIP RELAYS ENABLING 3 20 TYPE TESTS 1 10 TYPICAL WIRING DIAGRAM 2 7 W WARRANTY A 8 WIRING DIAGRAM 2 7 WITHDRAWAL 2 3 ...

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