ANSI/IEEE C37.90:2011
Relays and Relay Systems Associated with Electric Power Apparatus

Standard No.

ANSI/IEEE C37.90:2011

Release Date

2011

Published By

American National Standards Institute （ANSI)

Latest

ANSI/IEEE C37.90:2011

Scope

Specifies standard service conditions, standard ratings, performance requirements, and testing requirements for relays and relay systems used to protect and control power apparatus. A relay system may include computer interface equipment and/or communications interface equipment, such as a carrier transmitter/receiver or audio tone equipment.

ANSI/IEEE C37.90:2011 history

• 2011 ANSI/IEEE C37.90:2011 Relays and Relay Systems Associated with Electric Power Apparatus
• 1976 ANSI/IEEE C37.90-1978 IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus