Answer / vinoth

its for Protecting motor in overload,earthfault,underload and single phasing.
it need CT inputs / Some of the relay will works without CT by direct insert the power cable in Power-hole of relay.

what is the earth resistance ?

5 Answers   Bhel, Cummins,

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132 KV TRFO BUSHING CT BURNT WHEN A 6.6KV HAS BEEN APPLIED TO IT .WHY .ANY REASON ?

3 Answers   vguard,

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WHICH TYPE OF TRANSFORMER USED IN SWITCHYARD IN POWER PLANT?

15 Answers   GE, Lanco, NTPC,

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how do you select the ct/pt rating in substation

1 Answers   Apollo, Shreem Electric Ltd, Tata Motors,

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why only exciting current is shown not primary current in transformer???

0 Answers  

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Explain the fundamental difference between emf (electro motive force) and pd (potential difference) ?

0 Answers  

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how to find out difference between ELCB, MCB and RCB on looking on it

1 Answers  

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how would you come to know if a transformer is double wound or auto? note that there is no tag. you are given only a multimeter.

5 Answers  

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can we use the same fuse for both ac and dc?

3 Answers  

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How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

0 Answers  

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WHY DG are rated in KVA or MVA ???., but ALL power plants are rated in KW or MW.,,?

3 Answers   Coastal Energen,

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what's the simultenous maximum demand (SMD)..what the diffrent MD and SMD?

0 Answers   HAL,

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