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in order to stop the repetitive closure of the circuit breakers, anti pumping relay scheme is used. i.e suppose that an operator gives a close command to the breaker(via some switch), now the fault occurs, the breaker would tend to clear the fault and open the contacts.But since the operator has given the close command, it would cause closing of breaker again and again.. so anti pumping relay is used to ensure that this does not happen!

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Related Questions

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