BS IEC 60287-2-1:2015 - Electric cables. Calculation of the current rating. Thermal resistance. Calculation of thermal resistance

BS IEC 60287-2-1:2015

Electric cables. Calculation of the current rating. Thermal resistance. Calculation of thermal resistance

Status : Current   Published : April 2015

Format
PDF

Format
HARDCOPY



IEC 60287-2-1:2015 is available as

IEC 60287-2-1:2015 RLV

which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.



IEC 60287-2-1:2015 is solely applicable to the conditions of steady-state operation of cables at all alternating voltages, and direct voltages up to 5 kV, buried directly in the ground, in ducts, in troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant. This part of IEC 60287 provides formulae for thermal resistance. This second edition of IEC 60287-2-1 cancels and replaces the first edition, published in 1994, Amendment 1:2001, Amendment 2:2006 and Corrigendum 1:2008. This edition includes the following significant technical changes with respect to the previous edition:


a) inclusion of a reference to the use of finite element methods where analytical methods are not available for the calculation of external thermal resistance;


b) explanation about SL and SA type cables;


c) calculation method for T3 for unarmoured three-core cables with extruded insulation and individual copper tape screens on each core;


d) change of condition for X in 5.4;


e) inclusion of constants or installation conditions for water filled ducts in Table 4.




Standard NumberBS IEC 60287-2-1:2015
TitleElectric cables. Calculation of the current rating. Thermal resistance. Calculation of thermal resistance
StatusCurrent
Publication Date30 April 2015
Normative References(Required to achieve compliance to this standard)IEC 60853-2, IEC 60287-1-1:2006/A1:2014, IEC 60287-1-1:2006
Informative References(Provided for Information)IEC TR 62095, IEC 60287-3-1
ReplacesBS IEC 60287-2-1:1994+A2:2006
International RelationshipsIEC 60287-2-1:2015
Draft Superseded By12/30273095 DC
DescriptorsExternal, Absorptance, Mathematical calculations, Thermal resistance, Underground, Sheathed cables, Solid electrical insulating materials, Heat loss, Formulae (mathematics), Rated current, Multicore cables, Electric cables, Electric conductors, Cable sheaths
ICS29.060.20
Title in FrenchCâbles électriques. Calcul du courant admissible. Résistance thermique. Calcul de la résistance thermique
CommitteeGEL/20/16
ISBN978 0 580 80953 8
PublisherBSI
FormatA4
DeliveryYes
Pages46
File Size1.112 MB
Price£240.00


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