HV Exit Exam • Set 6 Question 28 of 30

The power-frequency RMS voltage that appears across the poles of a circuit breaker after final arc extinction is defined as the:

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Direct Answer

Option A: Recovery voltage

Recovery voltage is the normal power-frequency (50/60 Hz) RMS voltage that appears across circuit breaker contacts after transient oscillations have damped out and the arc is extinguished.

All Options

Recovery voltage (Correct Answer)

Restriking voltage

Active surge voltage

Peak prospective voltage

Detailed Explanation & Context

Recovery voltage is the normal power-frequency (50/60 Hz) RMS voltage that appears across circuit breaker contacts after transient oscillations have damped out and the arc is extinguished.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

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