HV Exit Exam • Set 3 Question 17 of 30

The desired protective tripping operation of a power circuit breaker under fault conditions is:

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Direct Answer

Option B: Automatically initiated by protective relays

Circuit breakers are designed to trip automatically and instantaneously upon receiving a trip command from associated protective relays (e.g., overcurrent, short circuit, differential).

All Options

Manually initiated

Automatically initiated by protective relays (Correct Answer)

Warning buzzer alarm only

Delayed until watchkeeper reset

Detailed Explanation & Context

Circuit breakers are designed to trip automatically and instantaneously upon receiving a trip command from associated protective relays (e.g., overcurrent, short circuit, differential).

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

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