Facilities need to perform installation tests, implement preventive maintenance programs, and perform comprehensive commissioning tests to verify the integrity of both existing protective relay systems and new protection systems. The recommendations and guidelines in this document are based on the. The testing and verification of relay protection devices can be divided into four groups: Type tests are needed to prove that a protection relay meets the claimed specification and follows all relevant standards. Periodical maintenance ensures that this performance is maintained. The information provided here is restricted to general notes regarding the procedures.
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