Page 1

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