HV Exit Exam • Set 6 Question 17 of 30
When selecting an insulating gas for high-voltage circuit breakers, which essential properties must be considered?
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Direct Answer
Option D: All of the above
An ideal arc-quenching gas must possess high dielectric strength, high thermal transfer capability, chemical inertness, non-flammability, and rapid deionization upon current zero.
All Options
A
High dielectric breakdown strength and rapid arc-recombination rate
B
High thermal conductivity and chemical stability
C
Non-flammability and non-toxicity in pure form
D
All of the above
(Correct Answer)
Detailed Explanation & Context
An ideal arc-quenching gas must possess high dielectric strength, high thermal transfer capability, chemical inertness, non-flammability, and rapid deionization upon 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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