Table Of Contents - GE MULTILIN 269 MOTOR MANAGEMENT RELAY Series Instruction Manual

1 INTRODUCTION
1.1 Motor Protection Requirements................1-1
1.2 269 Relay Features..................................1-1
1.3 Typical Applications .................................1-1
1.4 Order Code/Information ..........................1-3
1.5 Technical Specifications...........................1-4
2 INSTALLATION
2.1 Physical Dimensions ...............................2-1
2.2 Mounting .................................................2-6
2.3 External Connections...............................2-6
2.4 Control Power........................................ 2-12
2.5 Phase CT Inputs.................................... 2-12
2.6 Ground CT Input.................................... 2-15
2.7 Trip Relay Contacts ............................... 2-15
2.8 Alarm Relay Contacts ............................ 2-16
2.9 Auxiliary Relay #1 Contacts ................... 2-16
2.10 Auxiliary Relay #2 Contacts ................. 2-16
2.11 RTD Sensor Connections ..................... 2-17
2.12 Emergency Restart Terminals .............. 2-18
2.13 External Reset Terminals ..................... 2-18
2.14 Analog Output Terminals
(Non-Isolated)...................................... 2-18
2.15 Programming Access Terminals........... 2-18
2.16 Display Adjustment.............................. 2-19
2.17 Front Panel Faceplate.......................... 2-19
2.18 269 Drawout Relay .............................. 2-19
2.19 Meter Option Installation ...................... 2-23
3 SETUP AND USE
3.1 Controls and Indicators............................3-2
3.2 269 Relay Display Modes ........................3-6
3.3 ACTUAL VALUES Mode ..........................3-6
3.3a Starts/Hour Timer ............................... 3-16
3.3b Time Between Starts Timer .................. 3-16
3.3c Cause of Last Trip................................ 3-16
3.3d Cause of Last Event............................. 3-16
3.4 SETPOINTS Mode................................. 3-16
3.5 HELP Mode .......................................... 3-41
3.6 TRIP/ALARM Mode ............................... 3-41
3.7 Phase CT and Motor Full Load Current
Setpoints .............................................. 3-44
3.8 Acceleration Time Setpoint .................... 3-44
3.9 Inhibits .................................................. 3-44
3.10 Unbalance Setpoints............................ 3-45
3.11 Ground Fault (Earth Leakage)
Setpoints ............................................ 3-46
3.12 Undercurrent Setpoints ........................ 3-49
3.13 Rapid Trip / Mechanical Jam Setpoints 3-49
3.14 Short Circuit Setpoints ......................... 3-50
3.15 Immediate Overload Alarm Level
Setpoint............................................... 3-50
3.16 Stator RTD Setpoints ........................... 3-50
3.17 Other RTD Setpoints............................ 3-51
3.18 Overload Curve Setpoints .................... 3-51
3.19 Thermal Capacity Alarm ...................... 3-55
3.20 Thermal Memory ................................. 3-55
3.21 Emergency Restart .............................. 3-56
3.22 Resetting The 269 Relay...................... 3-57
3.23 269 Relay Self-Test.............................. 3-57

TABLE OF CONTENTS

3.24 Statistical Data Features ..................... 3-58
3.25 Factory Setpoints ................................ 3-58
3.26 Meter Option ....................................... 3-58
4 TESTING
4.1 Primary Injection Testing ......................... 4-1
4.2 Secondary Injection Testing..................... 4-1
4.3 Phase Current Input Functions ................ 4-1
4.4 Ground Fault Current Functions .............. 4-4
4.5 RTD Measurement Tests ......................... 4-4
4.6 Power Failure Testing.............................. 4-5
4.7 Analog Current Output ............................ 4-5
4.8 Routine Maintenance Verification............. 4-5
4.9 Dielectric Strength (Hi-Pot) Test............... 4-5
5 THEORY OF OPERATION
5.1 Hardware ................................................ 5-1
5.2 Firmware................................................. 5-1
6 APPLICATION EXAMPLES
6.1 269 Relay Powered from One of Motor
Phase Inputs .......................................... 6-1
6.2 Loss of Control Power Due to Short Circuit
or Ground Fault...................................... 6-1
6.3 Example Using FLC Thermal Capacity
Reduction Setpoint ................................. 6-1
APPENDIX A
269 UNBALANCE EXAMPLE ........................ A-1
APPENDIX B
269 Thermal Model ....................................... B-1
269 RTD Bias Feature................................... B-2
APPENDIX C
269 RTD Circuitry .........................................C-1
APPENDIX D
2φ CT Configuration ......................................D-1
APPENDIX E
Asymmetrical Starting Current ...................... E-1
APPENDIX F
269 Do's and Don'ts Checklist ....................... F-1
APPENDIX G
Ground Fault and Short Circuit Instantaneous
Elements............................................... G-1
APPENDIX H
I. 269 CT Withstand ......................................H-1
II. CT Size and Saturation .............................H-1
APPENDIX I
269 Commissioning Summary .......................I-1
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