BS 7769-1.1:1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
01-31-2007
English
08-15-2002
Committees responsible
National foreword
Introduction
1 General
1.1 Scope
1.2 Normative references
1.3 Symbols
1.4 Permissible current rating of cables
2 Calculation of losses
2.1 AC resistance of conductor
2.2 Dielectric losses (applicable to a.c. cables only)
2.3 Loss factor for sheath and screen (applicable to
power frequency a.c. cables only)
2.4 Loss factor for armour, reinforcement and steel
pipes (applicable to power frequency a.c. cables
only)
Tables
1 Electrical resistivities and temperature
coefficients of metal used
2 Skin and proximity effects - Experimental values for
coefficients kx and kp
3 Values of relative permitivity and loss factors
for the insulation of high-voltage and
medium-voltage cables at power frequency
4 Absorption coefficient of solar radiation for
cable surfaces
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