HV Exit Exam • Set 5 Question 13 of 30
Impulse voltage testing of high-voltage power transformers is conducted primarily to determine the ability of:
✓
Direct Answer
Option B: Winding insulation and bushings to withstand transient overvoltage surges
Full-wave and chopped-wave impulse tests verify that the dielectric insulation system of windings, barriers, and bushings can withstand high-voltage atmospheric and switching transients.
All Options
A
Transformer tank to withstand structural vibration
B
Winding insulation and bushings to withstand transient overvoltage surges
(Correct Answer)
C
Cooling radiators to dissipate oil heat
D
Core laminations to withstand magnetic saturation
Detailed Explanation & Context
Full-wave and chopped-wave impulse tests verify that the dielectric insulation system of windings, barriers, and bushings can withstand high-voltage atmospheric and switching transients.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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