Question
Download Solution PDF'Selectivity' is the ability of which of the following protective devices ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSelectivity
Selectivity in power system protection refers to the ability of a protective relay to isolate only the faulty section of the system while keeping the rest of the system operational. This ensures minimal disruption and improved system reliability.
Thus, relay is the correct choice as it determines which circuit breaker should trip based on fault location and system conditions.
Additional Information
- Lightning Arrester: Protects equipment from voltage surges due to lightning but does not have selectivity.
- Circuit Breaker: Operates based on the signals from relays but does not inherently have selectivity.
- Fuse: Provides overcurrent protection but does not selectively differentiate between faults in different parts of the system.
Last updated on May 29, 2025
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