Answer / felix

its nothing but an interlock for repetitive open/close

Answer / suresh chand

The main purpose of anpumping relay is to protect Circuit breaker in fault condition when CB is receiving direct closing command.
if a circuit breaker is reciving direct closing command or there is any shorting in its closing circuit and simultaniously there is in fault then the CB then the will close and trip many times and will damage its pole. by proving antipumping contactor/relay the VCB will not close electrical again untill closing pulse is removed. It contact also comes in series with closing circuit hence also act as a interlock in closing circuit.

Answer / ravendran

the relay used to protect the closing coil.that means
breaker closing condition again to give close command it is
used to bypass the command and save the closing coil.

Answer / rahul sharma

antipumping is a term itself sowing that prevention of
pumping . in antipumping when breaker had all ready closed
it will prevent to get other closing comand to coill. so
coill prevent from damage .

Answer / p dinesh

It is for the prevention of closure of breaker at faulty
condition

Answer / vinodg

Antipumping is preventing the continuos close/trip of
Circuit Breaker with single command during fault or
interlock trip exist.
ie Circuit breaker will close only once when trip signal
exist.

Answer / n.srinivasarao

IT is Protection of closing coil.

Answer / s.gowrisankar

MR.FELIX i say that it is only the interlock for
closing,opening won't come in to picture

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