BS 7454(1991) : 1991
Current
The latest, up-to-date edition.
METHOD FOR CALCULATION OF THERMALLY PERMISSIBLE SHORT-CIRCUIT CURRENTS, TAKING INTO ACCOUNT NON-ADIABATIC HEATING EFFECTS
Hardcopy , PDF
English
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 |
| BS 7888-2:1998 | LV and MV accessories for power cables with rated voltage from 0.6/1 kV (<i>U</i><sub>m</sub>=1.2 kV) up to and including 20.8/36 kV (<i>U</i><sub>m</sub>=42 kV) Methods of test |
| BS 7430(2011) : 2011 | CODE OF PRACTICE FOR PROTECTIVE EARTHING OF ELECTRICAL INSTALLATIONS |
| BS 6739:2009 | Code of practice for instrumentation in process control systems: installation design and practice |
| 08/30136724 DC : DRAFT MAY 2008 | BS 6739 - CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS - INSTALLATION DESIGN AND PRACTICE |
| 11/30249994 DC : DRAFT JULY 2011 | BS 7430 - CODE OF PRACTICE FOR PROTECTIVE EARTHING OF ELECTRICAL INSTALLATIONS |
| IEC 60287-2-1:2015 RLV | Electric cables - Calculation of the current rating - Part 2-1: Thermal resistance - Calculation of thermal resistance |
| IEC 60287-1-1:2006+AMD1:2014 CSV | Electric cables - Calculation of the current rating - Part 1-1:Current rating equations (100 % load factor) and calculation of losses - General |
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