Metal-clad (MC) medium-voltage switchgear that contains drawout electrically operated circuit breakers is covered. MC switchgear is compartmentalized to isolate components such as instrumentation, main bus, and both incoming and outgoing connections with grounded metal barriers. Rated maximum voltage levels for metal-clad switchgear range from 4.76 kV to 38 kV with main bus continuous current ratings of 1200 A, 2000 A, 3000 A, and 4000 A. MC switchgear also contains associated control, instruments, metering, relaying, protective, and regulating devices, as necessary. Service conditions, ratings, temperature limitations and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and applications are discussed.
- Standard Committee
- PE/SWG - Switchgear
- Status
- Superseded Standard
- PAR Approval
- 2008-09-26
- Superseded by
- C37.20.2-2022
- Superseding
- C37.20.2-1999
- Amendment
-
C37.20.2a-2020
- Board Approval
- 2015-06-11
- History
-
- ANSI Approved:
- 2016-09-12
- Published:
- 2015-09-22
Additional Resources
- Downloads
- 9099778
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/SWG - Switchgear
- Working Group
-
SA/C37.20.2 - C37.20.2 - Standard for Metal-Clad Switchgear
- IEEE Program Manager
- Jennifer Santulli
Contact Jennifer Santulli - Working Group Chair
- Ronald Hartzel
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
C37.20.2a-2020
IEEE Standard for Metal-Clad Switchgear–Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
This amendment addresses the requirements for control, secondary, and logic-level wiring. It covers wire type, ampacity, and methods for protecting wiring across a hinge.
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
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