Historical
IEC 60287-2-1 Ed. 1.1 b:2001
Electric cables - Calculation of the current rating - Part 2-1: Thermal resistance - Calculation of thermal resistance
Is solely applicable to the conditions of steady-state operation of cables at all alternating voltages, as well as in 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.
Content Provider
International Electrotechnical Commission [iec]