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FIST 3-8, Operation, Maintenance, and Field Test Procedures for Protective Relays and Associated Circuits. 5a. CONTRACT NUMBER. 5b. GRANT NUMBER. and test activities on Lockout Relays. 3.0 SCOPE: 3.1 Discussion. The relays discussed ip this procedure are auxiliary relays used in. Relay testing procedure · 1 Functional Tests. The functional tests consist of applying the appropriate · 2 Rating Tests. Rating type tests are conducted to ensure Relay Testing. Inverse definite minimum type relay (IDMT):-. IDMT operation. The IDMT relay works on the induction principle, where a aluminium or copper. d. perform relay self-test procedure and external communications checks on digital/numerical relays e. test main current transformers f. test main voltage FACILITIES INSTRUCTIONS, STANDARDS, AND TECHNIQUES VOLUME 3-8 FIELD TEST PROCEDURE FOR PROTECTIVE RELAYS Internet Version of This manual Created July 2000Relay Testing Guide.pdf Test, repair and calibrate protection relays and meters UETTDRTS08B (Vol 1 of 3) 57 Fault finding procedures . breakers, ground-fault trip devices and overcurrent relays. APPLICATIONS when following the recommended test procedure of testing. Type tests are needed to prove that a protection relay meets the claimed software and hardware testing, the type testing procedure is very complex and