IEEE C37.90.2-2024

This standard specifies design tests for relays, relay systems, and control devices used for the protection and control of electric power apparatus that relates to the immunity of this equipment to radiated electromagnetic fields. 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.

This standard establishes a common and reproducible basis for evaluating the performance of relays, relay systems, and control devices used for protection and control of electric power apparatus, when subjected to radiated electromagnetic fields. This standard requires that an evaluation be performed during both quiescent and operate states.

Revision Standard - Active. Design tests for relays and relay systems that relate to the immunity of this equipment to radiated electromagnetic interference from transceivers are specified in this standard. Field strength, test frequencies, modulation, sweep rates, equipment setup and connection, test procedures, criteria for acceptance, and documentation for test results are described. This standard has been harmonized with IEC standards where consensus could be reached.