how actually an anti pumping device works? what is the
operational principal?
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Answer / eee
the purpose of antipumping rly is to prevent closing of CB
when its already closed.the CB's have auxillary contact NO and
closes when CB is closed and thus energises antipumping...
antipumping has conatcts in series with closing coil of CB,
its NC n thus opens when energised.......cutting power supply
to closing coil.......
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Answer / vinod
Antipumping relay prevent contious close and trip of
breaker when trip command exist.ie only one close with
single command, remaining answer is same as Sl.no 1
Is This Answer Correct ? | 1 Yes | 0 No |
Double Busbar Scheme for outdoor switch yard system (132kv) step up power plant Hi friends 1. in this system both busbars energized all the time. 2. what is the meaning of main BB and transfer BB, 3. step up transformer connect main bus bar all the time or both BB connected through DS switch . 4.bus sectionalization means ? thank you.
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