HVI power long Conductor (high-voltage-resistant, insulated down conductor), for keeping the separation distance from electrically conductive parts according to IEC 62305-3, in order to prevent dangerous flashover between external lightning protection system components and indoor conductive parts (electrical installation, piping, etc.). In order to avoid creeping discharge, the HVI power Conductor has a special outer sheath which allows high lightning impulse voltages to be discharged to a reference potential. For on-site assembly (cut to length as ordered 6 m - 35 m - black). Equivalent separation distance s ≤ 90 cm (in air), s ≤ 180 cm (solid material).