Mathematics · Power System Protection
An over-current relay has a current setting of 120%. What is its pick-up current if the rated secondary current of the current transformer is 5 A (given the transformer ratio is 100 and rated primary current is 500 A)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16.0 A✓
- 2120 A
- 36.0 A
- 41.2 A
Correct answer
6.0 A
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