8/12/2019 Line Outage Checklist
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Sr no Description Tick ( ) Remarks
1 Confirmation of line Outage Permit no:2 Feeder LBB &
Busbar Links In RP removed3 TBC LBB & Busbar Links In TBC RP
removed4 Disconnection of CT TBs5 Removal of PT fuses and links6
Distance Relay Make: Type:a All DRs and Events in the relay
Downloaded and savedb Correct Date and Time in Relay checked If
Date/Time not correct change itc Prepare/ Refer Distance Relay
Calculations as per setting guidelinesd Check Relay Settings for
correctness as per calculatione Distance Relay Zone reach/timing
testedf Distance relay testing for various features
1. VT Fuse Failure2.Broken conductor3.Carrier Aided scheme
trials and TX Counter reading check4.AR Trials on own CB for Z1 and
Carrier Aided trip
5.AR LO Trials on own CB for Z2,Z3,Z4 and Reclaim time fault6.
AR Trials on TBC CB for Z1 and Carrier Aided trip IF TBC AR in
service else mention NA7.AR LO Trials on TBC CB for Z2,Z3,Z4 and
Reclaim time fault IF TBC AR in service else mention NA
g Relay LEDs check all above distance relay testsh Annunciation
Check all above Distance relay features Attend problem if detectedi
Results recorded in register
j Soft copy of results saved in Laptop.7 Directional (O/C + E/F)
Relay Make: Type:a All DRs and Events in the relay Downloaded and
savedb Correct Date and Time in Relay checked If Date/Time not
correct change itc Prepare/ Refer Relay Calculations as per setting
guidelines and fault datad Check Relay Settings for correctness as
per calculatione Directional (O/C + E/F) testing for features
1.Relay OC and EF characteristics checked2.OC and EF Directional
test checked3.Own CB Trip test on 86/LO relay operation through
current injection in BU relay.4.TBC CB Trip test on 86/LO relay
operation through current injection in BU relay. IF TBC available
else mention NA
g Relay LEDs check all above BU relay testsh Annunciation Check
for all above BU relay test Attend problem if detectedi Results
recorded in register
j Soft copy of results saved in Laptop.
Name of the Substation:Name of the feeder:Date of testing :Type
of Testing: Routine/Post occurence analysis/ Troubleshooting ( the
correct one)Previous date of Testing:
