IEC 60287-2-1:2023

IEC 60287-2-1:2023

IEC 60287-2-1:2023 Electric cables - Calculation of the current rating - Part 2-1: Thermal resistance - Calculation of thermal resistance

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Details

IEC 60287-2-1:2023 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.

Additional Info

Author International Electrotechnical Commission (IEC)
Committee TC 20
Published by IEC
Document type Standard
Edition 3.0
ICS 29.060.20 : Cables
Number of pages 47
Replace IEC 60287-2-1:2015,IEC 60287-2-1:2015 + Redline
Document history IEC 60287-2-1:2015 + Redline,IEC 60287-2-1:2015
Keyword IEC60287-2-1,IEC 60287-2-1:2023,IEC 60287-2-1,TC 20