HV Exit Exam • Set 5 Question 5 of 30
When performing high-voltage testing using portable instruments, proving the voltmeter (live-dead-live check) is mandatory on all voltage levels above:
✓
Direct Answer
Option D: 600 V / 1000 V
On power circuits above 600 V / 1,000 V, the Live-Dead-Live rule (test detector on known source, test circuit, re-test detector) is strictly mandatory to ensure detector functionality.
All Options
A
24 V
B
50 V
C
230 V
D
600 V / 1000 V
(Correct Answer)
Detailed Explanation & Context
On power circuits above 600 V / 1,000 V, the Live-Dead-Live rule (test detector on known source, test circuit, re-test detector) is strictly mandatory to ensure detector functionality.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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