Table of Contents
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TABLE OF CONTENTS
7.2.3
CRC-16 Algorithm...............................................................................................7-3
7.2.4
Message Timing .................................................................................................7-3
7.3.1
Modbus Function Codes .....................................................................................7-4
7.3.2
Exception Responses .........................................................................................7-7
7.3.3
Clock Synchronization of Multiple Relays ...........................................................7-8
7.3.4
Reading the Event Recorder ..............................................................................7-9
7.3.5
Reading Trace Memory ....................................................................................7-10
7.3.6
Reading the Data Logger..................................................................................7-11
7.3.7
Accessing Data via the User Map.....................................................................7-11
7.3.8
Memory Map Organization ...............................................................................7-12
7.4.1
Memory Map .....................................................................................................7-13
7.4.2
Data Formats ....................................................................................................7-40
7.5.1
Device Profile Document ..................................................................................7-49
7.5.2
DNP Implementation.........................................................................................7-51
7.5.3
DNP Point Lists.................................................................................................7-52
8.1.1
Safety Precautions..............................................................................................8-1
8.1.2
Requirements .....................................................................................................8-1
8.1.3
Conventions........................................................................................................8-2
8.1.4
Test Equipment...................................................................................................8-2
8.1.5
Installation Checks..............................................................................................8-2
8.1.6
Wiring Diagrams .................................................................................................8-3
8.2.1
Logic/Virtual Inputs 1 to 14 .................................................................................8-4
8.2.2
Virtual Inputs 15 to 20 .........................................................................................8-8
8.2.3
Output Relays .....................................................................................................8-9
8.3.1
Current Metering ...............................................................................................8-10
8.3.2
Voltage Metering...............................................................................................8-10
8.3.3
Power Metering.................................................................................................8-12
8.3.4
Demand Metering .............................................................................................8-13
8.3.5
Analog Input Metering.......................................................................................8-15
8.4.1
Setpoint Groups ................................................................................................8-16
8.4.2
Phase Overcurrent............................................................................................8-16
8.4.3
Neutral Overcurrent ..........................................................................................8-20
8.4.4
Ground Overcurrent ..........................................................................................8-23
8.4.5
Negative-Sequence Overcurrent and Voltage ..................................................8-24
8.4.6
Voltage..............................................................................................................8-25
8.4.7
Frequency .........................................................................................................8-29
8.4.8
Breaker Failure .................................................................................................8-31
8.4.9
Reverse Power .................................................................................................8-32
8.5.1
Current Monitoring ............................................................................................8-33
8.5.2
Fault Locator .....................................................................................................8-33
8.5.3
Demand Monitoring ..........................................................................................8-34
8.5.4
Analog Inputs....................................................................................................8-35
8.5.5
Overfrequency Monitoring ................................................................................8-35
8.5.6
Power Factor ....................................................................................................8-36
8.5.7
VT Failure .........................................................................................................8-36
8.5.8
Trip Coil Monitor ...............................................................................................8-37
8.5.9
Close Coil Monitor ............................................................................................8-37
8.5.10
Breaker Operation Failure ................................................................................8-37
8.5.11
Arcing Current...................................................................................................8-38
8.5.12
Analog Output Channels...................................................................................8-38
8.5.13
IRIG-B ...............................................................................................................8-38
8.5.14
Pulse Output .....................................................................................................8-38
750/760 Feeder Management Relay
GE Multilin
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