HVI power long cable (high-voltage-resistant insulated conductor), for maintaining the separation distance from electrically conductive parts in accordance with DIN EN 62305-3 (VDE 0185-305-3), in order to prevent dangerous flashovers between parts of the external lightning protection and internal, conductive parts (electrical system, pipes, etc.). To prevent creeping discharges, the HVI power cable is equipped with a special outer sheath that enables high lightning impulse voltages to be diverted to a reference potential. Version for assembly on site (cut to length as ordered 6 m - 35 m - black). Equivalent separation distance s = 90 cm (in air), s = 180 cm (solid building material).