Answer / sandma

To convert ac into dc,then store it in the batteries.when a fault occurs relays are act on only in dc,and for lightining purpose in the substation.BATTERIES are heart of the substation.

Answer / jithendra adusumilli

all the controls (VCB's & protections relay) will be on DC

When the AC supply is off then for identification of the VCB's & control will very easy it means heart of the Control

Answer / n.prabakar

DC supply only for breaker control because ,if plant came to blockout we cant resume even EB suppy without breaker close.

Answer / azhakesh

In all industries sub station contain DC pannel to run the total plant with DC for the constant power supply and avoid the fluctuvation.

Please define ampere?

0 Answers  

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What is the power rate of power transformer?

1 Answers  

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how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.

0 Answers  

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what is different between electrical ckt&electronic ckt

4 Answers   Ashok Leyland,

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What is plc.

2 Answers  

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how to carried out tan delta test in 11 KV alternator ?

0 Answers  

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What are the relays in ACB and VCB

0 Answers   ABB, Bhel,

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What is relation bet kvar & microfarad

2 Answers  

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why the capacity of power plant is given in MW though the generators are rated in MVA?

3 Answers   TATA,

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A CT is marked as 10VA 0.2FS in its name plate. What is it? Where it is used?

1 Answers  

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how many types of ratings are there of transformer

5 Answers   Met Trade,

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Sir we are using 250 kva DG its Diesel consumption 25 lits / hrs maximum load 160 kva now how to calculate units/ litres

1 Answers  

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