HV Exit Exam • Set 6 Question 12 of 30

In electrical contactors and switching devices, the interrupting medium may be:

✓

Direct Answer

Option D: Any of the above

Contactors are manufactured in various technologies including air-break, vacuum contactors (standard in marine HV motor starters), and oil/gas immersed units.

All Options

Atmospheric air

Vacuum

SF6 gas or insulating oil

Any of the above (Correct Answer)

Detailed Explanation & Context

Contactors are manufactured in various technologies including air-break, vacuum contactors (standard in marine HV motor starters), and oil/gas immersed units.

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

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