Electrical Engineering · Power System Protection
Which of the following statements is NOT true regarding the characteristics of a protective relay used in electrical circuits?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The relaying system should be simple so that it can be easily maintained, as reliability is closely related to simplicity.
- 2A 1 VA relay is more sensitive than a 3 VA relay, as it operates with a lower volt-ampere input.
- 3As a strict rule, the economic cost of the entire protective gear should never exceed 5% of the total station cost.✓
- 4Reliability is the ability of the relay system to operate under pre-determined conditions.
Correct answer
As a strict rule, the economic cost of the entire protective gear should never exceed 5% of the total station cost.
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