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.
IEC 60287-2-1:1994+AMD1:2001 CSV ED1.1
99.60 Withdrawal effective
Apr 9, 2015
IEC 60287-2-1:2015 ED2