Answer
●Have to follow check list as per sms.
● Ensure work permit has been filled and approved.
●Personal engaged in should be qualified and trained.( EO+2/E) ●Do RA.
●Floor matting
●Lighting arrangement
●Extra ordinary toolbox meeting.
Brief about safety aspects.
Make sure proper PPE using.
Process.
●Power is switched of, bus bar is dead, and isolated.( main supply and control supply) –double verify( need black out if)
●Paste various poster, don’t start man at work etc and notice near AE don’t start.
●Prepare surface – clean bus bar and terminal.
●Select megohmmeter ( 440 or 1000 v as required)
VERIFY megger reading – phase to earth ( all 3 phases)
●Phase to phase( R-Y, Y-B, B-R)
Record readings.
Interprate results
If need repeat.
File in Documents.
Restore power.