1. BS EN IEC 60840 AMD1. 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. (27th August 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (21 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗