Question

Describe working of protective relays. What are important functional requirement of relays?

03 Feb 2026
Answer :
Word Count : 283
Protective relays are essential devices used in electrical power systems to detect abnormal conditions and initiate corrective action, mainly by isolating the faulty section of the system. The working of a protective relay is based on continuous monitoring of electrical quantities such as current, voltage, frequency, power, or impedance. Under normal operating conditions, these quantities remain ____ __________ ______ _______ _________ _____.
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