PC37.90 - Standard for Relays, Relay Systems, and Control Devices used for Protection and Control of Electric Power Apparatus – General Requirements and Tests
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This standard establishes the service conditions, ratings (electrical, thermal, and mechanical), and testing requirements for relays, relay systems, and control devices used for the protection and control of electric power apparatus. For devices with communication ports, where the device does not perform protection or control functions, testing of the communication functions is covered by IEEE Std. 1613. Where the device performs protection or control functions and has communication ports, tests for all communication functions are covered by the IEEE C37.90 family of standards.
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