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SL.NO BAYS Alarms Indication Remarks1 Feeder-1
(REL 670) Carrier receive Ch-1/Ch-2Carrier Sw. Out PositionCarrier Ch-1/Ch-2 failStart A/RTC-1 FaultyTC-2 FaultyIncoming source-2 DC failTrip 3ph from Main-2Direct Trip receive Ch-1Relay in Test modeCB DC supply-1 failSF6 Block AlarmAC supply failCompressor StartCompressor StopCB Pole Disc. OptdSF6/Comp. Air low Gr-ACB DC supply-2 failLow Air pressureSF6 Gas Re-ment Alarm3ph Gr-A Trip relay Optd3ph Gr-B Trip relay OptdBlock A/R3ph Gr-A/B relay faulty86A Optd86B OptdRelay communication fail
2 (P442) DC Incoming source-1 failCarrier Ch-2 failDT Receive CH-2Carrier receive Ch-2Carrier Sw. Out positionCarrier Ch-1 FailCarrier receive Ch-1Relay in Test modeCB not readyMain-1 Protection failRelay Communication fail
3 Feeder-2(REL 670) Carrier receive Ch-1/Ch-2
Carrier Sw. Out PositionCarrier Ch-1/Ch-2 failStart A/RTC-1 FaultyTC-2 FaultyIncoming source-2 DC failTrip 3ph from Main-2Direct Trip receive Ch-1Relay in Test mode
SCADA IO List of CHHAUR - ABIR220kV-ALARMS
For ABB-SAS For ABB-TS For ABIR
Page 2
CB DC supply-1 failSF6 Block AlarmAC supply failCompressor StartCompressor StopCB Pole Disc. OptdSF6/Comp. Air low Gr-ACB DC supply-2 failLow Air pressureSF6 Gas Re-ment Alarm3ph Gr-A Trip relay Optd3ph Gr-B Trip relay OptdBlock A/R3ph Gr-A/B relay faulty86A Optd86B OptdRelay communication fail
4 (P442) DC Incoming source-1 failCarrier Ch-2 failDT Receive CH-2Carrier receive Ch-2Carrier Sw. Out positionCarrier Ch-1 FailCarrier receive Ch-1Relay in Test modeCB not readyMain-1 Protection failRelay Communication fail
For ABB-SAS For ABB-TS For ABIR
Page 3
5 Transformer-HV(RET 670) PRV Trip Rph
PRV Trip YphPRV Trip BphWTI Alarm RphWTI Alarm YphWTI Alarm BphOTI AlarmBackup Protection and BCU relay faultyIncoming source-2 DC failOTI Trip86A Optd86B OptdInter trip Group-AInter trip Group-B3ph Grp-A Trip unit faulty3ph Grp-B Trip unit faultyBusbar relay fail3ph Grp-A Trip relay optd3ph Grp-B Trip relay optdMOG AlarmOSR TripWTI Trip RphWTI Trip YphWTI Trip BphBuchhloz alarm RphBuchhloz alarm YphBuchhloz alarm BphBuchholz Trip RphBuchholz Trip YphBuchholz Trip BphRelay communication fail
6 (RET 543) CB DC supply 1&2 failSF6 Blocking AlarmAC supply failCB Pole Disc OptdSF6/Comp. Air low Grp-ALow air pressureSF6 Gas Re-Ment AlarmDC incoming source-1 fail86B OptdDiff. relay faultyRelay Communication Fail
7 Transformer-LV(RET 543) CB DC supply 1&2 fail
SF6 Blocking AlarmAC supply failCompressor StartCompressor StopSpring not chargedSF6 Re-Ment AlarmDC incoming source-1 failDC incoming source-2 fail3ph Trip unit faulty3ph Trip realy OptdLBB initiation86A OptdRelay Communication Fail
For ABB-SAS For ABB-TS For ABIR
Page 4
8 Bus Bar(REB 670) 201 86 Trip relay Optd for Alarm
202 86 Trip relay Optd for Alarm203 86 Trip relay Optd for AlarmBusbar Sw. in OUT positionDC-1 failDC-2 failTrip/Open Ckt resetBay 201 LBB initiationBay 202 LBB initiationBay 203 LBB initiationRelay Communication Fail
For ABB-SAS For ABB-TS For ABIR
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