Industry Standards Covering Powell Products
December 3, 1993
All Powell products are designed and tested to conform to applicable industry standards. The following is
a list of the principal standards applying to each of these products. In general, each of these standards
includes a list of reference standards which further define the details of products, test methods, etc.
The major standards organizations whose standards are referenced below are:
ANSI: American National Standards Institute
IEEE: Institute of Electrical and Electronics Engineers
NEMA: National Electrical Manufacturers Association
UL: Underwriters Laboratories
NFPA: National Fire Protection Association
PowlVac® Vacuum Circuit Breakers
ANSI/IEEE
C37.04-1979
IEEE Standard Rating Structure for AC High-Voltage Circuit
Breakers Rated on a Symmetrical Current Basis
ANSI C37.061987
AC High-Voltage Circuit Breakers Rated on a Symmetrical Current
Basis -Preferred Ratings and Related Required Capabilities
ANSI/IEEE
C37.09-1979
IEEE Standard Test Procedure for AC High-Voltage Circuit
Breakers Rated on a Symmetrical Current Basis
ANSI C37.541987
Indoor Alternating-Current High-Voltage Circuit Breakers Applied
as Removable Elements in Metal-Enclosed Switchgear
Assemblies - Conformance Test Procedures
PowlVac® Metal-Clad Switchgear
ANSI/IEEE C37.20.2- IEEE Standard for Metal-Clad Switchgear and Station-Type
1987
Cubicle Switchgear
ANSI C37.55-1989
Powell Industries, Inc.
PO Box 12818
Houston, TX • 77217
Metal-Clad Switchgear Assemblies - Conformance Test
Procedures
©2005 Powell Industries, Inc. • All rights reserved.
Tel: 713.944.6900 • Fax: 713.947.4453
www.powellind.com
info@powellind.com
Industry Standards Covering Powell Products
page 2
Medium-Voltage Switch-and-Fuse Equipment
ANSI/IEEE C37.20.31987
IEEE Standard for Metal-Enclosed Interrupter
Switchgear
Low-Voltage Power Circuit Breakers
ANSI/IEEE
C37.13-1990
IEEE Standard for Low-Voltage AC Power Circuit Breakers Used
in Enclosures
ANSI C37.161988
Low-Voltage Power Circuit Breakers and AC Power Circuit
Protectors - Preferred Ratings, Related Requirements, and
Application Recommendations
ANSI C37.171979
American National Standard for Trip Devices for AC and GeneralPurpose DC Low-Voltage Power Circuit Breakers
ANSI C37.501979
Low-Voltage AC Power Circuit Breakers Used in Enclosures - Test
Procedures
Low-Voltage Power Circuit Breaker Switchgear
ANSI/IEEE
C37.20.1-1987
IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear
ANSI C37.51-1989
Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear
Assemblies - Conformance Test Procedures
UL 1558-1984
Metal-Enclosed Low Voltage Power Circuit-Breaker Switchgear
Bus Duct
ANSI/IEEE C37.23- IEEE Standard for Metal-Enclosed Bus and Calculating
1987
Losses in Isolated-Phase Bus
Medium-Voltage Motor Control
Industrial Control Devices, Controllers and Assemblies, Part ICS 2-324,
NEMA ICS
AC General-Purpose Medium Voltage Contactors and Class E
2-1988
Controllers, 50 and 60 Hertz
Powell Industries, Inc.
PO Box 12818
Houston, TX • 77217
©2005 Powell Industries, Inc. • All rights reserved.
Tel: 713.944.6900 • Fax: 713.947.4453
www.powellind.com
info@powellind.com
Industry Standards Covering Powell Products
page 3
Low-Voltage Motor Control Centers
NEMA ICS 2- Industrial Control Devices, Controllers and Assemblies, Part ICS 21988
322, AC Motor Control Centers
UL 845-1988 Motor Control Centers
PCR® Power Control Rooms
There are no industry standards for these buildings themselves. Individual Powellbuilt equipments installed in PCR® buildings are built per the standards listed
above. Other equipments and devices installed in PCR® buildings are normally
manufactured per the applicable industry standards for the particular item. The only
industry standard that applies to the complete assembly is ANSI/NFPA 70-1993:
National Electrical Code. All electrical work within and on the outside walls of the
PCR® is done per the NEC.
Baldwin Bridger, P.E.
Technical Director
Powell Industries, Inc.
PO Box 12818
Houston, TX • 77217
©2005 Powell Industries, Inc. • All rights reserved.
Tel: 713.944.6900 • Fax: 713.947.4453
www.powellind.com
info@powellind.com