Answer / vishreddy205

for the protection of breaker when
breaker doesn't operate for
abnormalities then main breaker act
as a backup protection

Answer / hardip dodiya

For Protection of Breaker and protection of EHV Bus-bar in
EHV and HV switchyard. all S/s breaker have one NO/NC
Contact connected to Bus-bar control panel in which. at
time of fault, Breaker Stuck up due to Mechanisam prob or
failure of Trip coil or any mechanical damage problem.
After it TIME-Delay time almost 200ms. busbar control
panels sense this abnormality and give command to all
breaker to trip which is connceted to EHV Bus-bar.

Protect the S/s Equipment.

Answer / shailesh

The main function of LBB to get protection (To trip breaker)
when main breaker not trip due any reasons.

When charging a 20 MVA , 33kV/6.6kV transformer through regulated (0-6.6 kV or 0-33 kV) source on no load , what will be the maximum current drawn by transformer from source and what sould be the source capacity.

5 Answers   TATA,

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Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????

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what is current check gurd relay?

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What are the main problems in distribution? I have to do an assignment so which problem should I choose? Like power factor problem etc.

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How can calculat the lode of transformer?

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On what basis the the size of Lightning arrester for buildings are selected ?

0 Answers   KGD,

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what is ferranti effect?

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How two nos. 130 kw D.C motor get synchronise using D.C drive.

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i am working in automation feild my question is that how to find the KVA of transformer.

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What are protection of power transformer?

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wath is this mining of bts

2 Answers   Nokia,

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