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IEC60840-2020 Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um 36 kV) up to 150 kV (Um 170 kV) - Test methods and requirements
IEC 60840-2021 Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um36kV) up to 150 kV (Um170kV)-Test methods and requirements.pdf
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