T&D World Magazine

NEMA Publishes Guide for Handling, Maintenance of AC Outdoor High-Voltage Circuit Breakers

The National Electrical Manufacturers Association (NEMA) has published SG 11-2008Guide for Handling and Maintenance of Alternating Current Outdoor High-Voltage Circuit Breakers.

This new standard covers general information for the handling, installation, and maintenance of high-voltage circuit breakers. It includes information on most types of circuit breakers in service or currently in production, including oil circuit breakers, air-blast circuit breakers, vacuum circuit breakers, and gas (SF6) circuit breakers. The recommendations are generally applicable, representing the consensus of a number of manufacturers of high-voltage circuit breakers. It was developed by the Switchgear Section of the Power Equipment Division.

“SG 11 provides a wealth of information encompassing the installation, handling, and maintenance of outdoor high-voltage circuit breakers,” said Ted Olsen, chair of the Switchgear Section. “The standard’s recommendations for maintenance and installation and other information make it an indispensable resource for anyone working with these outdoor high-voltage circuit breakers.”

SG 11 may be downloaded at no charge, or a hardcopy purchased for $56, by visiting NEMA’s website at www.nema.org/stds/sg11.cfm, or by contacting IHS at 800-854-7179 (within the U.S.), 303-397-7956 (international), 303-397-2740 (fax), or on the Web at global.ihs.com.

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