in our 6.6kv motor feeder[it is having two sources from Bus A&B] earth fault relay is acting, we checked CBCT connection and cable meggerd values found very good still earth fault acting during first two are three start after that it will hold. please clarify what was the reason. if same motor is starting from other Bus-A it will start.

1 Answers   Gasal, Voltech,

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WHY WE ARE EXPRESSING KW-HR AS UNIT OF ELECTRICITY.........?WE CAN EXPRESS IN ANOTHER UNIT.....?

4 Answers   Summit Power,

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what is the harmonics? which harmonics(fundamental and reference) is suitable for calculating capacitor bank and Active filter and passive filter? what is the 1st 2nd 3rd 4th 5th harmonics and effects?

1 Answers  

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why are installed water leakage detection system data centers & server rooms

0 Answers   Reliance,

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Can I Drain A Oil For Sample When The Transformer is Running? (Charged)

2 Answers  

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1.Difference between vcb and Acb and partes. 2.Difference between STS and ATS.

2 Answers  

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E.B sending end to receiving end 33kv ug cable laid 8Km,receiving end to ss1,ss2,ss3,ss4 all are Approx 800 Mtr,can go for 33KV to 430V or 33kv to 11kv in receiving end and 11kv to 430 near ss ,which one is good for technically and economically.

1 Answers   JLL,

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how do skin effect is reduced when hallow cond or stranded cond are used ?

1 Answers  

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What is line resistance of cable & how it can be measured ?

0 Answers  

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Merits & Demarits of Oil circuit & Air circuit breakers ?

0 Answers   Genco,

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How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f used in Canada is to be operated on 50 hz in Europe frequency then how will its KVA rating change? a-increase b-decrease c-remains same

1 Answers  

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sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

0 Answers  

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