GE Multilin 750/760 Feeder Management Relay iii
TABLE OF CONTENTS
5.7.4 Demand............................................................................................................ 5-78
5.7.5 Analog Input..................................................................................................... 5-83
5.7.6 Analog Outputs ................................................................................................ 5-86
5.7.7 Overfrequency.................................................................................................. 5-88
5.7.8 Equipment........................................................................................................ 5-89
5.7.9 Pulse Output .................................................................................................... 5-95
5.8 S7 CONTROL
5.8.1 Setpoint Groups ............................................................................................... 5-96
5.8.2 Synchrocheck................................................................................................... 5-99
5.8.3 Manual Close Blocking................................................................................... 5-101
5.8.4 Cold Load Pickup Blocking ............................................................................ 5-103
5.8.5 Undervoltage Restoration .............................................................................. 5-105
5.8.6 Underfrequency Restoration .......................................................................... 5-106
5.8.7 Transfer.......................................................................................................... 5-107
5.8.8 Autoreclose (760 only) ................................................................................... 5-118
5.9 S8 TESTING
5.9.1 Output Relays ................................................................................................ 5-129
5.9.2 Pickup Test .................................................................................................... 5-130
5.9.3 Analog Outputs .............................................................................................. 5-130
5.9.4 Simulation ...................................................................................................... 5-131
5.9.5 Factory Service .............................................................................................. 5-134
6. ACTUAL VALUES 6.1 OVERVIEW
6.1.1 Actual Values Main Menu .................................................................................. 6-1
6.2 A1 STATUS
6.2.1 Virtual Inputs ...................................................................................................... 6-5
6.2.2 Hardware Inputs................................................................................................. 6-5
6.2.3 Last Trip Data..................................................................................................... 6-6
6.2.4 Fault Locations................................................................................................... 6-7
6.2.5 Clock .................................................................................................................. 6-7
6.2.6 Autoreclose (760 only) ....................................................................................... 6-7
6.3 A2 METERING
6.3.1 Metering Conventions ........................................................................................ 6-8
6.3.2 Current ............................................................................................................... 6-9
6.3.3 Voltage ............................................................................................................. 6-10
6.3.4 Frequency ........................................................................................................ 6-11
6.3.5 Synchronizing Voltage ..................................................................................... 6-11
6.3.6 Power ............................................................................................................... 6-11
6.3.7 Energy.............................................................................................................. 6-12
6.3.8 Demand............................................................................................................ 6-13
6.3.9 Analog Input..................................................................................................... 6-14
6.4 A3 MAINTENANCE
6.4.1 Trip Counters ................................................................................................... 6-15
6.4.2 Arcing Current .................................................................................................. 6-15
6.5 A4 EVENT RECORDER
6.5.1 Event Records.................................................................................................. 6-16
6.5.2 Last Reset Date ............................................................................................... 6-18
6.6 A5 PRODUCT INFO
6.6.1 Technical Support ............................................................................................ 6-19
6.6.2 Revision Codes ................................................................................................ 6-19
6.6.3 Calibration Dates.............................................................................................. 6-19
7. COMMUNICATIONS 7.1 OVERVIEW
7.1.1 Protocols ............................................................................................................ 7-1
7.1.2 Physical Layer.................................................................................................... 7-1
7.2 MODBUS PROTOCOL
7.2.1 Description ......................................................................................................... 7-2
7.2.2 Data Link Layer.................................................................................................. 7-2
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