Mathematics · Power Systems
An IDMT overcurrent relay has a plug setting multiplier (PSM) value of 14, and the operating time of this relay at a Time Setting Multiplier (TSM) of 1.0 is 2.4 seconds. If the TSM is adjusted to 0.5, find the actual operating time of the relay.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14.8 seconds
- 21.2 seconds✓
- 30.5 seconds
- 42.4 seconds
Correct answer
1.2 seconds
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