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.

Can we use all 3 cores of a cable to connect DC motor + ve terminal and similarly one more cable for - ve terminal.

2 Answers  

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If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.

5 Answers  

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Why transformer rating in KVA? describe.

5 Answers  

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what will happen if ac and dc supplies given

1 Answers   APTransco,

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why we use 25 kv in railway .not 11kv, or 33 kv

2 Answers   ISRO,

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Which one is correct mVA or MVA. Whether both the units are same for the transformer

10 Answers   Areva,

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Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

0 Answers  

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what is the CT & PT. where is it uses.what is the using that plese kindly answer me...?

4 Answers   Cap Gemini, JLL,

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Explain about p.t?

1 Answers  

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How we find the size of cable if we know the current

2 Answers   Gemscab,

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where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

1 Answers  

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why full load voltage is less than no load voltage?

4 Answers  

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