GE 745 TRANSFORMER MANAGEMENT RELAY User Manual

GE Power Management 745 Transformer Management Relay
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TABLE OF CONTENTS
1. PRODUCT OVERVIEW
1.1 INTRODUCTION
1.1.1 DESCRIPTION .......................................................................................... 1-1
1.1.2 SUMMARY OF PROTECTION FEATURES.............................................. 1-2
1.1.3 ORDER CODES ........................................................................................ 1-4
1.2 TECHNICAL SPECIFICATIONS
1.2.1 APPLICABILITY......................................................................................... 1-5
1.2.2 INPUTS...................................................................................................... 1-5
1.2.3 PROTECTION ELEMENTS....................................................................... 1-6
1.2.4 OUTPUTS.................................................................................................. 1-9
2. GETTING STARTED
2.1 USING THE FRONT PANEL DISPLAY
2.1.1 MANEUVERING ........................................................................................ 2-1
2.2 CHANGING SETPOINTS
2.2.1 DESCRIPTION .......................................................................................... 2-3
2.2.2 INSTALLING THE SETPOINT ACCESS JUMPER ................................... 2-3
2.2.3 NUMERICAL SETPOINTS ........................................................................ 2-3
2.2.4 ENUMERATION SETPOINTS................................................................... 2-4
2.2.5 TEXT SETPOINTS .................................................................................... 2-5
2.3 SECURITY
2.3.1 INSTALLATION ......................................................................................... 2-6
2.3.2 PASSCODE SECURITY SETUP............................................................... 2-6
a CHANGING THE PASSCODE .................................................................. 2-6
b DISABLING/ENABLING PASSCODE SECURITY .................................... 2-7
3. INSTALLATION
3.1 DRAWOUT CASE
3.1.1 CASE DESCRIPTION................................................................................ 3-1
3.1.2 PANEL CUTOUT....................................................................................... 3-1
3.1.3 CASE MOUNTING..................................................................................... 3-2
3.1.4 UNIT WITHDRAWAL AND INSERTION.................................................... 3-2
a RELAY WITHDRAWAL.............................................................................. 3-2
b RELAY INSERTION................................................................................... 3-3
c DRAWOUT SEAL ...................................................................................... 3-3
3.2 TYPICAL WIRING
3.2.1 DESCRIPTION .......................................................................................... 3-4
3.2.2 REAR TERMINAL LAYOUT ...................................................................... 3-4
3.2.3 REAR TERMINAL ASSIGNMENTS........................................................... 3-5
3.2.4 TYPICAL WIRING DIAGRAMS ................................................................. 3-6
3.2.5 PHASE SEQUENCE AND TRANSFORMER POLARITY ......................... 3-8
3.2.6 AC CURRENT TRANSFORMER INPUTS ................................................ 3-8
3.2.7 AC VOLTAGE INPUT................................................................................ 3-8
3.2.8 CONTROL POWER................................................................................... 3-9
3.2.9 LOGIC INPUTS.......................................................................................... 3-9
3.2.10 ANALOG INPUT...................................................................................... 3-10
3.2.11 TAP POSITION INPUT............................................................................ 3-10
3.2.12 RTD DRIVER/SENSOR........................................................................... 3-10
3.2.13 OUTPUT RELAYS................................................................................... 3-11
3.2.14 SOLID STATE TRIP OUTPUT................................................................. 3-11
3.2.15 ANALOG OUTPUTS................................................................................ 3-11
3.2.16 RS485 / RS422 COMMUNICATION PORTS .......................................... 3-12
3.2.17 RS232 FRONT PANEL PROGRAM PORT ............................................. 3-13
3.2.18 IRIG-B...................................................................................................... 3-14

GE 745 TRANSFORMER MANAGEMENT RELAY Specifications

General

Brand	GE
Model	745 TRANSFORMER MANAGEMENT RELAY
Category	Relays
Language	English