Design of a static time-overcurrent relay as affected by its application
- General Electric Co., Philadelphia
The design, operation, uses, and performance of the General Electric Type SFC static time overcurrent relay are reviewed. It is shown that the solid-state SFC overcurrent relay represents a significant advance in protective relaying and offers the relay engineer a new tool with which to overcome some of the application difficulties he has faced in the past with electromechanical relays. With the SFC relay, overcurrent protection can be accomplished with greater precision and with reduced backup clearing times. Because the SFC static overcurrent relay costs more than conventional electromechanical overcurrent relays, the benefits of the relay are subject to careful economic analysis. It is expected that electromechanical relays will continue to be satisfactory for the vast majority of applications, with the SFC static relay available as an alternative for use in situations where its greater cost can be justified in terms of meeting specific requirements.
- OSTI ID:
- 5413364
- Journal Information:
- Proc. Am. Power Conf.; (United States), Vol. 38; Conference: American power conference, Chicago, IL, USA, 20 Apr 1976; Other Information: See CONF-760469--
- Country of Publication:
- United States
- Language:
- English
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