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
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.