IEC 60502-1:1997 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (U<(Index)m> = 1,2 kV) up to 30 kV (U<(Index)m> = 36 kV) - Part 1: Cables for rated voltages of 1 kV (U<(Index)m> = 1,2 kV) and 3 kV (U<(Index)m> = 3,6 kV) has been changed from IEC 60502:1994 Extruded solid dielectric insulated power cables for rated voltages from 1 kV up to 30 kV.
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