IEEE standard for relays and relay systems associated with electric power apparatus
By: sponsor, Power System Relaying Committee of the IEEE Power Engineering Society.
Contributors: IEEE Standards Board.; American National Standards Institute.; IEEE Power Engineering Society. Power Systems Relaying Committee.
Series: IEEE Std --  C37.90-1989.
Publisher: The Institute of Electrical and Electronics Engineers
Published: 1989
Place of publication: New York, N.Y., USA
Language: eng
Number of pages: 12
Subjects: Electric relays -- Standards
Other titles: An American national standard.
Notes: "ANSI/IEEE C37.90-1989."

"Revision of ANSI/IEEE C.37.90-1978."

"Approved August 17, 1989, IEEE Standards Board."

Also available via the World Wide Web with additional title: ANSI/IEEE Std C37.90-1989.