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IEEE STANDARD

ANSI/IEEE C37.90-1989 - IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus

Description: Superseded by IEEE Std C37.90-2005 This standard applies to relay systems that protect and control apparatus that generate, and distribute and use electric power. This standard defines service conditions and specifies relay performance requirements and performance information that relay manufacturers shall provide.
  • Status: Inactive-Superseded STD Help

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