IS 3842 : Part 3 : 1966 Application guide for electrical relays for ac systems: Part 3 Phase unbalance relays including negative phase sequence relays
UDC 621.316.925.43 : 621.318.5 | ETD 35 |
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Reaffirmed 2021 |
1. Scope
1.1 This guide ( Part III ) deals with application of phase unbalance relays, including negative phase sequence relays, for ac systems, covered by
IS : 3231-1965*.
1.2 This guide does not cover details regarding the principles of system design and system protection.