Superseded Standard

IEEE C37.20.1-2002

IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear

Low-voltage metal-enclosed switchgear-which contains either stationary or drawout, manually or electrically operated low-voltage ac or dc power circuit breakers in individual grounded metal compartments, in three-pole, two-pole, or single-pole construction is covered. Rated maximum voltage levels are 254V, 508V, or 635V (ac) and 300/325V, 800V, 1000V, 1200V, 1600V, or 3200V (dc). The preferred continuous current ratings of the main bus in ac designs are 1600A, 2000A, 3000A, 3200A, 4000A, or 5000A. For dc designs, the preferred ratings are 1600A, 2000A, 2500A, 3000A, 4000A, 5000A, 6000A, 8000A, 10000A, or 12000A. The switchgear may also contain associated control, instruments, metering, protective, and regulating devices as necessary. The standard deals with service conditions, ratings, temperature limitations, and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application.

Sponsor Committee
PE/SWG - Switchgear
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Status
Superseded Standard
PAR Approval
2000-06-21
Superseded by
C37.20.1-2015
Superseding
C37.20.1-1993
Amendments
C37.20.1a-2005
C37.20.1b-2006
Board Approval
2002-06-13
History
ANSI Approved:
2002-10-29
Published:
2002-10-09
Reaffirmed:
2007-09-27

Additional Resources

Interpretation
C37.20Series_interp.pdf

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/SWG - Switchgear
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Working Group
SASC-WG_C37.20.1 - SASC - IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear
IEEE Program Manager
Ashley Moran
Contact
Working Group Chair
Ted Burse
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