The voltage appearing across the contacts after the opening of the circuit breaker is called ______ voltage.

The voltage appearing across the contacts after the opening of the circuit breaker is called ______ voltage.

Right Answer is:

Recovery

SOLUTION

Recovery Voltage

Initially, this voltage is a result of the transient response of the system formed by the breaker contacts and the L-C parameters of the power system.

The voltage which appears across the circuit breaker contacts immediately after the arc interruption at current zero is called the recovery voltage.

or

Power frequency RMS voltage, which appears across the circuit-breaker contacts after the transient oscillations die out and final extinction of arc has resulted in all the poles, is known as Recovery Voltage.

Instantaneous recovery voltage at the instant of arc extinction is known as Active Recovery Voltage.

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