C37.23-1969 ANSI/IEEE Guide for Calculating Losses in Isolated Phase Bus

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Organization: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 29 June 1969
Status: inactive
Page(s): 1 - 16
ISBN (Online): 978-1-5044-0485-3
DOI: 10.1109/IEEESTD.1969.7442030

Abstracts

Regular

Over the years, the isolated-phase bus has received widespread application in connecting the output of generators to step-up transformers. The trend toward generating units of larger capacity has dictated the need for higher rated isolated-phase bus designs. The increased losses associated with the higher capacity bus may be significant in the economic evaluation of alternate schemes or selection of equipment. The bus designer must know the magnitude and distribution of losses in order to keep temperature rises of bus components within the limits specified in USA Standard C37.20. In addition, the losses must be known to permit proper sizing of forced-cooling equipment whenever it is used.Various papers have been presented that deal with the determination of losses in isolated-phase bus enclosures. The difference in the results obtained for the same bus using various methods is of sufficient magnitude to cause concern. The industry has indicated the need for a guide for calculating losses to establish a common yardstick for establishing, evaluating, and applying different designs.

Standard

Over the years, the isolated-phase bus has received widespread application in connecting the output of generators to step-up transformers. The trend toward generating units of larger capacity has dictated the need for higher rated isolated-phase bus designs. The increased losses associated with the higher capacity bus may be significant in the economic evaluation of alternate schemes or selection of equipment. The bus designer must know the magnitude and distribution of losses in order to keep temperature rises of bus components within the limits specified in USA Standard C37.20. In addition, the losses must be known to permit proper sizing of forced-cooling equipment whenever it is used.Various papers have been presented that deal with the determination of losses in isolated-phase bus enclosures. The difference in the results obtained for the same bus using various methods is of sufficient magnitude to cause concern. The industry has indicated the need for a guide for calculating losses to establish a common yardstick for establishing, evaluating, and applying different designs.

Document History

C37.23-2015 - IEEE Standard for Metal-Enclosed Bus
May 17, 2016 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies for indoor and outdoor use are discussed in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with cont...

PC37.23/D8.0, Sep 2015 - IEEE Draft Standard for Metal-Enclosed Bus
October 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies f 35 or indoor and outdoor use are covered in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with co...

PC37.23/D7.0, Aug 2015 - IEEE Draft Standard for Metal-Enclosed Bus
September 29, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies f 35 or indoor and outdoor use are covered in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with co...

PC37.23/D6.0, Mar 2015 - IEEE Draft Standard for Metal-Enclosed Bus
August 28, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies f 35 or indoor and outdoor use are covered in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with co...

PC37.23/D8.1, Sept 2015 - IEEE Approved Draft Standard for Metal-Enclosed Bus
January 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies f 35 or indoor and outdoor use are covered in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with co...

C37.23-2003 - IEEE Standard for Metal-Enclosed Bus
April 26, 2004 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Metal-enclosed (ME) bus assemblies for indoor and outdoor use are covered in this standard.The types of assemblies covered are nonsegregated-phase bus, segregated-phase bus, andisolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 0.635 kVthrough 38 kV with continuous current...

C37.23-1987 - IEEE Guide for Metal-Enclosed Bus and Calculating Losses in Isolated-Phase Bus
January 1, 1987 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Assemblies of metal-enclosed conductors along with associated interconnections, enclosures and supporting structures are considered. When switches and disconnecting links are included, they should conform to this standard. The standard is concerned with performance characteristics of enclosed, rathe...

C37.23-1969 - ANSI/IEEE Guide for Calculating Losses in Isolated Phase Bus
June 29, 1969 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Over the years, the isolated-phase bus has received widespread application in connecting the output of generators to step-up transformers. The trend toward generating units of larger capacity has dictated the need for higher rated isolated-phase bus designs. The increased losses associated with the ...

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