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.

why when i start my diesel generator it takes 1 minute or less then stop, and i checked the oil sensor is ok and when the generator start i can get 220 voltage but it it is stop after 1 minute or less, how can i solve this problem?

1 Answers  

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Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.

1 Answers  

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Why is ignitor used in sodium vapour lamp

1 Answers  

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How to prepare electrical preventive maintenance plan & shedule of machine tools.

2 Answers  

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what is the difference between isolation and insolation ? please explain in detail with example.

5 Answers   ABB,

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While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

0 Answers  

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What is the difference between in Fourier series and Fourier Transform. and please tell me the difference between both of them and the why we use them in communication system?

0 Answers  

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What will happen when we connect 2 bulbs in series between 2 phases

7 Answers   Pepsi, PowerTech,

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What is the resistance to be connected for supplying the load of 20mV,1kohm from 20mV supply using rectifier.

1 Answers   Anna University,

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How much ph is maintained of water resistance starter for slipring induction motor ?

0 Answers  

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neutral earth resistance testing is it possible for transformer while in load condition

0 Answers  

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What is the efficiency during maximum power transfer?

0 Answers  

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