HV Exit Exam • Set 6 Question 29 of 30

The high-frequency transient voltage that appears across circuit breaker contacts at the precise instant of arc extinction at current zero is called the:

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Direct Answer

Option B: Restriking voltage (Transient Recovery Voltage - TRV)

Restriking voltage (TRV) is the transient voltage with high rate of rise (RRTRV) that appears across contacts immediately following arc extinction at current zero.

All Options

Recovery voltage

Restriking voltage (Transient Recovery Voltage - TRV) (Correct Answer)

Nominal system voltage

Demagnetising EMF

Detailed Explanation & Context

Restriking voltage (TRV) is the transient voltage with high rate of rise (RRTRV) that appears across contacts immediately following arc extinction at current zero.

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

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