Physical diagram of interlock of 14-pin intermediate relay

The anti - pumping function stands as a crucial characteristic of control circuits. In the absence of this anti - pumping function, assume that a user connects a maintained contact within the closing circuit. When the circuit breaker is closed onto a fault current, the protective relays will promptly trigger a tripping action. However, the maintained contact in the closing circuit will attempt to close the breaker (once again) onto the fault. This repetitive and dangerous process is referred to

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