in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

1946

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What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.

1664

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Why you are switching off arc protection mcb when you are taking shutdown for lv board.

1712

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Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

1654

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How you give clearance to a spare feeder.

1713

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Operation of isolators.

1904

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Load transfer in 11kv double busbar switchgear - operation.

1966

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How to check the cable fault / hv test of transformer cable.

1903

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How to do maintenance of transformer feeder.

1886

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Single line diagram for dbb (double bus bar)system.

1962

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How earthing of switchgear system to be done.

1948

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What are locations arc protection relay is fixed.

1894

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Zone of protection and tripping scheme of arc protection relay.

1882

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High speed earth switch operation with diagram

2504

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If breaker is undefined position, first step to do.

2281

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