Answer / anand

nc is normally contact to common terminal,when gives supply to the relay common contact to no contact

Answer / k.prakashchandra

You mean the aux switches of cb ? There are NO and NC
contacts (determined when the cb is in open position)which
operate when the cb opens or closes.

which protection are used for turbo generator in thermal power plant.

1 Answers   Grasim,

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Define peak overshoot.

0 Answers  

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A 6-pole, 50 Hz, 3-phase synchronous motor and on 8-pole, 50 Hz, 3-phase slip-ring induction motor are mechanically coupled and operate on the same 3-phase, 50 Hz supply. If they are left open-circuited, then the frequency of the voltage produced across any two slip rings would be

2 Answers   L&T,

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Why transformer called by KVA?

8 Answers   Reliance,

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How to select AC3 duty contactor for DOL & Star-Delta starters

1 Answers  

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can we use existing delta star with neutral grounded,step down(6.6kV/415V), 3 phase power transformer bi-directionally.

3 Answers   GMR,

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Why tripping not occur when the transmission lines (11KV & above) breaks? Doesn't we provide earthfault protection for it?

1 Answers  

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If i want to build 230kv substation what are the equipments to be installed?

7 Answers  

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If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

2 Answers   Focus,

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how is find out kwh step by step

0 Answers   Voith,

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What is BusBar integrity test and how it is conducted?

0 Answers  

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why use phase displacement in transformer.and effect of phase displacement on transformer

0 Answers   IOCL, ONGC,

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