What is the purpose of an anti-condensation heater fitted inside HV electric motors and switchboards?
Direct Answer
Option D: Maintain internal temperature slightly above ambient when stopped to prevent moisture condensation
Anti-condensation heaters prevent moisture accumulation on windings when equipment is idle. By maintaining the internal temperature slightly above the ambient dew point, these heaters prevent insulation breakdown and tracking caused by condensation, which is a primary cause of electrical failure in marine motors and switchboards in humid environments.
All Options
Detailed Explanation & Context
Anti-condensation heaters prevent moisture accumulation on windings when equipment is idle. By maintaining the internal temperature slightly above the ambient dew point, these heaters prevent insulation breakdown and tracking caused by condensation, which is a primary cause of electrical failure in marine motors and switchboards in humid environments.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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