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IEEE C37.90-2005 (R2011)

IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus

Service conditions, electrical ratings, thermal ratings, and testing requirements are defined for relays and relay systems used to protect and control power apparatus. This standard establishes a common reproducible basis for designing and evaluating relays and relay systems.

Content Provider
Institute of Electrical and Electronics Engineers [ieee]

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Document History
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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.