Historical
IEEE Std C37.90-2005
Standard for Relays and Relay Systems Associated with Electric Power Apparatus
The scope of the project will be to identify the standard service conditions, ratings, and requirements for testing relays and relay systems. These standards will be applicable to the devices that are manufactured with previous technologies and the numerical technology that is being used these days The standard will apply to relays and relay systems used in electric generation, transmission and distribution systems. The original PAR has been withdrawn and a new project approved.
Content Provider
Institute of Electrical and Electronics Engineers [ieee]