IS 3842 : Part 12 : 1976 Application guide for electrical relays for ac systems: Part 12 Differential relays for transformers

1. SCOPE

1.1 This guide (Part XII) deals with the application of differential relays for transformers for ac systems, covered by IS : 3231-1965*. It also applies to differential protection of auto-transformers and generator transformer unit.

1.2 This guide does not cover the principle of system design and system protection.