HV Exit Exam • Set 7 Question 11 of 30
Merz-Price circulating current differential protection is primarily used for the protection of:
✓
Direct Answer
Option B: Alternators and Power Transformers
Merz-Price differential protection compares current entering and leaving alternator/transformer windings, providing fast, unit protection against internal stator phase-to-phase and phase-to-earth faults.
All Options
A
Overhead distribution feeders
B
Alternators and Power Transformers
(Correct Answer)
C
Low-voltage motors
D
Direct current batteries
Detailed Explanation & Context
Merz-Price differential protection compares current entering and leaving alternator/transformer windings, providing fast, unit protection against internal stator phase-to-phase and phase-to-earth faults.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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