Physics · Switchgear and Protection
An IDMT (Inverse Definite Minimum Time) overcurrent relay provides primary protection to a power transformer against:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Inter-turn insulation breakdown
- 2Core overfluxing conditions
- 3External short-circuit faults and overloads✓
- 4Internal winding faults
Correct answer
External short-circuit faults and overloads
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