Protection Engineering Basics and Schemes Protection Engineering | Page 148

Diagram 2(Connection with 3 phase Relay Test kit) Here we see two binary input connections, binary input in any relay senses the signal from associated equipment with relays i.e. Circuit breakers, auxiliaries etc. 5.4.1.1 Testing Method:  1 st isolate the Relay need to be Test  Off that circuit breaker ,on which Under Test Relay is mounted pg. 148