Switchgear
Assemblies Subcommittee
Scope:
Treatment of all
matters relating to Switchgear Assemblies.
Chairman: Anne Morgan
701 Ninth St, NW
USA
Standards
Covered by this Subcommittee:
|
Number |
Title |
Status |
Contact |
|
C37.20.1 2002(R2007) |
Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear |
Current |
Chair: |
|
C37.20.1a 2005 (R2007) |
Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear -- Amendment
1: Short-Time and Short-Circuit Withstand Current Tests; Minimum Areas for
Multiple Cable Connections |
Current (To be
incorporated into C37.20.1) |
Chair: |
|
C37.20.1b 2006 (R2007) |
Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear --
Amendment 2: Additional Requirements
for Control and Auxiliary Power Wiring in DC Traction Power Switchgear |
Current (To be
incorporated into C37.20.8) |
Chair: |
|
C37.20.2 1999 (R2004) |
Metal-Clad Switchgear |
Current Revision begun May-2006 |
Chair: |
|
C37.20.3 2001 (R2006) |
Metal-Enclosed Interrupter Switchgear |
Current Revision begun May-2007 |
Chair: |
|
C37.20.4 2001 (R2006) |
Indoor AC Medium Voltage Switches for Use in Metal-Enclosed
Switchgear |
Current Revision begun May-2007 |
Chair: |
|
C37.20.6 2007 |
4.76
kV to 38 kV Rated Grounding and Testing Devices Used in Enclosures |
Current |
Contact: |
|
C37.20.7 2007 |
Guide
for Testing Medium-Voltage Metal-Enclosed Switchgear for Internal Arcing
Faults |
Current |
Chair: |
|
C37.20.7 corr 1 |
Guide
for Testing Medium-Voltage Metal-Enclosed Switchgear for Internal Arcing
Faults Corrigendum1 |
PAR 9/2008 Balloted
10/2009 |
Chair: |
|
C37.20.8 |
Metal-Enclosed
Low-Voltage DC Traction Power Switchgear |
New project PAR
3/2009 Revision begun |
Chair: |
|
C37.21 2005 |
Control Switchboards |
Current |
Contact: |
|
C37.22 1997 (R2003) |
Preferred Ratings and Related Required Capabilities for Indoor
AC Medium-Voltage Switches Used in Metal-Enclosed Switchgear |
Current To be merged
into C37.20.4 See C37.20.4
status |
Contact: |
|
C37.23 2003 (R2008) |
Metal-Enclosed Bus |
Current |
Contact: |
|
C37.24 2003 (R2008) |
Guide for Evaluating the Effect of Solar Radiation on Outdoor
Metal-Enclosed Switchgear |
Current |
Contact: |
|
C37.59 2007 |
Requirements
for Conversion of Power Switchgear Equipment |
Current |
Chair: |
|
C37.81 1989 (R2005) |
Seismic Qualification of Class 1E Metal-Enclosed Power
Switchgear Assemblies |
Current Reaffirmation
ballot 10/2009 |
Contact: |
|
C37.82 1983 (R2004) |
Qualification of Switchgear Assemblies for Class 1E Applications
in Nuclear Power Generating Stations |
Current Reaffirmation
ballot 10/2009 |
Contact: |
|
C37.121 1989 (R2000,R2006) |
Unit Substations |
Revision begun
Sept 2009 |
Contact: |
Current Switchgear Assemblies Subcommittee
Activities:
C37.20.1 (LV
metal-enclosed switchgear)
Chair: T. A. Burse
(for revision project)
Reaffirmed Sept 2007. Working group will be formed in the next several years for revision of C37.20.1 to incorporate the content of amendments 1 and 2, and to consider other desirable revisions. A task force reviewed low-voltage dc traction power switchgear (3200Vdc and below), and determined that a separate standard for this class of equipment is needed (C37.20.8 designation reserved).
C37.20.1a
Amendment 1 working group (LV metal-enclosed switchgear)
Chair: T. A. Burse
This amendment will be incorporated into C37.20.1. A revision effort is expected to start in the next several years.
C37.20.1b Amendment 2 working group (LV metal-enclosed
switchgear)
Chair: T. A. Burse
A PAR was approved 9/2009 and a working group is being formed to for a new standard C37.20.8 covering LV dc traction switchgear. This amendment will be incorporated into the new Standard.
C37.20.2 working group (MV metal-clad switchgear)
Chair: M. Wactor
The working group for revision of the 1999 document began work in 05-2006. The revisions will include reorganization to coordinate with C37.100.1-2007 (Common Clauses for Power Switchgear). This will allow elimination of large portions of text for common subjects (e.g. procedures for continuous current tests) from the metal-clad switchgear document, simplifying future maintenance.
C37.20.3 /
C37.20.4 / C37.22 (MV load interrupter switchgear and switches)
Chair: C. Ball
These three documents are related, with C37.20.3 covering metal-enclosed load interrupter switchgear, C37.20.4 covering the switch used in C37.20.3 switchgear, and C37.22 listing the preferred ratings of the C37.20.4 switches. The working groups for revision of these documents began work 05-2007. The revisions will include reorganization to coordinate with C37.100.1-2007 (Common Clauses for Power Switchgear), and this activity is making very rapid progress. The revision effort will also coordinate with changes in IEEE 1247-2005 (Interrupter Switches for Alternating Current, Rated Above 1000 Volts). As part of the revision effort, the content of C37.22 will be merged into C37.20.4.
C37.20.6 working
group (MV ground & test devices)
This document was approved by the IEEE-SA 12-2007 and by ANSI 05-2008. This working group has been disbanded.
C37.20.7 working
group (arc resistant LV and MV switchgear)
Chair: M. Wactor
This document was approved by the IEEE-SA 09-2007 and by ANSI 03-2008. A PAR has been approved 9/2008 for developing Corrigendum 1. The Corrigendum is to resolve issues with low voltage arcing tests.
C37.20.8 working
group (
Chair: T. A. Burse,
Co-Chair: D.
C37.21 (control
switchboards)
This Standard covers ratings, construction and testing of dead-front control switchboards. No current activity. It is expected that reaffirmation will occur in 2010, with a revision effort starting sometime after 2010.
C37.23
(metal-enclosed bus)
This Standard was reaffirmed by the IEEE-SA 06-2008 and by ANSI 09-2008. A task force was formed fall of 2008 to address adding cable back into the document, coordinate with C37.100.1 – 2007 (Common Clauses for Power Switchgear) and other issues.
C37.24 (solar
radiation on outdoor metal-enclosed switchgear)
This Guide is intended to assist in evaluating the effect of solar radiation on outdoor metal-enclosed switchgear and is applicable to outdoor metal-enclosed power switchgear, control switchboards, and metal-enclosed bus. No current activity.
C37.59 working
group (conversions of power switchgear)
Chair: P. Dwyer
This Standard provides direction and guidance in converting power switchgear equipment from a qualified design. The document is sponsored by ADSCOM, with joint participation by the Switchgear Assemblies, Low Voltage Switchgear Devices, and High Voltage Circuit Breakers subcommittees. No current activity.
C37.81 (seismic qualification
of class 1E switchgear)
This Guide describes methods by which metal-enclosed power switchgear can be qualified seismically, for use in nuclear power stations. It is also useful for qualification of switchgear for applications other than in nuclear power stations. The document is relatively technology-independent, but recent changes in regulations concerning seismic requirements may necessitate beginning of a revision effort in the next several years.
C37.82
(qualification of switchgear for class 1E service in nuclear power stations)
This Standard describes methods by which metal-enclosed power switchgear can be qualified for class 1E applications in nuclear power stations. The document is relatively technology-independent, so that the document remains relevant even though it was initially approved many years ago. It is expected that a revision effort may be necessary in the next several years.
C37.121 (unit
substations)
Chair: J. Smith
This Standard describes the broad range of configurations for unit substations. A unit substation is a substation consisting primarily of one or more transformers that are mechanically and electrically connected to, and coordinated in design with, incoming and outgoing equipment. A work group has been formed to revise this Standard.
For more
detailed current information on the Switchgear Assemblies Subcommittee,
please
see the
Minutes of the Meetings (Archives) on the Home Page.
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Switchgear Committee Home Page.
Last updated: October, 2009