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BS 7454(1991) : 1991

Current
Current

The latest, up-to-date edition.

METHOD FOR CALCULATION OF THERMALLY PERMISSIBLE SHORT-CIRCUIT CURRENTS, TAKING INTO ACCOUNT NON-ADIABATIC HEATING EFFECTS
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-1991

Introduction
1 List of symbols
2 Permissible short-circuit current
3 Calculation of adiabatic short-circuit current
4 Calculation of short-circuit temperature
5 Calculation of non-adiabatic factor for
  conductors and spaced wire screens
6 Calculation of non-adiabatic factor for
  sheaths, screens and wires
Appendix A - Explanation of recommended
             methods for taking into account
             non-adiabatic heating effect when
             calculating permissible short-circuit
             currents

Provides a simple method for incorporating the non-adiabatic heating effect when calculating short-circuit ratings so that the same short-circuit ratings are obtained by different designers.

Committee
GEL/20/16
DevelopmentNote
Also numbered as IEC 60949. (10/2005) 1991 Edition Re-Issued in February 2010 & incorporates AMD 1 2008. Supersedes 07/30157615 DC. (02/2010)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current
Supersedes

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