Physics · Power System Protection

What is the relation between the number of protective relays and the overall reliability of a protection scheme?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The number of relays has absolutely no impact on reliability.
2A lesser number of relays increases reliability.✓
3A greater number of relays increases reliability.
4The reliability depends completely on the type of relays used rather than the count.

Correct answer

A lesser number of relays increases reliability.

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