Standard icon


IEEE C37.90-1978 - IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus

Description: The purpose of this standard is to specify standard service conditions, standard ratings, and requirements for testing of relays and relay systems associated with power apparatus.
  • Status: Superseded STD Help

Get This Standard

Buy Purchase a copy of this standard Buy External Link
Access with Subscription External Link Standards Online subscribers can access this standard in IEEE Xplore Digital Library. Access Learn More