why we use post insulators in no ofstacks at substation for supporting equipment ? why we not use single post insulator

3 Answers  

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What is restricted earth fault protection ?

1 Answers  

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Why is tan-delta test and capacitor measurement done on alternator?

0 Answers   TD Power Systems,

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what is pole slip ?

4 Answers   NTPC,

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What is Mvar?how significant is in electrical energy transmission?

2 Answers   Areva,

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through which medium return supply given to alternator please answer in details

1 Answers   MahaGenco,

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What should be the value of earth resistance for an instrumentation/electronic circuit? As per which IS/IEC Code?

3 Answers   IOCL,

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Why ground terminal is used in pot meter 10k ohms

0 Answers   Mahle,

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Pls explain about full theory of salient pole generator?

1 Answers   Kirloskar,

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how we can produce negative DC voltage ? please explain it .,thank u

1 Answers  

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what is the basic difference between capacitor and condenser ?

17 Answers   ABB, Essar,

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What is surger vector in 33Kv transmission feeder? We have AC power generator of 8MW which is paralleled with 33Kv EB grid. Some times our HT breaker gets trip off due to surge vector problem. How to over come it? Is there any device to observe the surge and avoid tripping?

3 Answers  

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