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

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Organization: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 January 1989
Status: inactive
Page Count: 13
ICS Code (Relays): 29.120.70
ISBN (Online): 0-7381-0894-4
DOI: 10.1109/IEEESTD.1989.94810

Abstracts

Standard

This standard applies only to relays and relay systems used to protect and control power apparatus. The purpose of this standard is to specify standard service conditions, standard ratings, performance requirements, and requirements for testing of relays and relay systems associated with power apparatus.<>

Document History

C37.90-2005 - IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus
January 31, 2006 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

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.

PC37.90/D15 - Approved IEEE Draft for Standard Requirements for Liquid-Immersed Distribution Substation Transformers (Revision of C37.90-1989) Superseded by C37.90-2005
January 1, 2004 - IEEE - Institute of Electrical and Electronics Engineers, Inc.
A description is not available for this item.
PC37.90/D15, Jan 2004 - Unapproved IEEE Draft Standard for Relays and Relay Systems Associated With Electric Power Apparatus
January 1, 2004 - IEEE - Institute of Electrical and Electronics Engineers, Inc.
A description is not available for this item.
C37.90-1989 - IEEE Standard for Relays and Relay Systems Associated With Electric Power Apparatus
January 1, 1989 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This standard applies only to relays and relay systems used to protect and control power apparatus. The purpose of this standard is to specify standard service conditions, standard ratings, performance requirements, and requirements for testing of relays and relay systems associated with power appar...

C37.90-1978 - IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus
November 4, 1976 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

An electric device designed to respond to input conditions in a prescribed manner and after specified conditions are met to cause contact operation or similar abrupt change in associated electric control circuits.

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