HV Exit Exam • Set 3 Question 14 of 30
Polarisation Index (PI) testing is typically required and conducted for standard low-voltage (< 1000 V) generators.
✓
Direct Answer
Option B: False
Polarisation Index (PI) testing (10-min / 1-min ratio) is standard for high-voltage (HV) large rotating machines (IEEE 43). Low-voltage machines typically rely on standard 1-minute insulation resistance (Megger) checks.
All Options
A
True
B
False
(Correct Answer)
Detailed Explanation & Context
Polarisation Index (PI) testing (10-min / 1-min ratio) is standard for high-voltage (HV) large rotating machines (IEEE 43). Low-voltage machines typically rely on standard 1-minute insulation resistance (Megger) checks.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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