Overview:

The ground wire insulator consists of two parts: the insulator and the protective gap. The protective gap is formed by electrodes fixed on the insulator through bolts.

Ground wire insulators are used to support the ground wire in high-voltage overhead lines. During normal operation of the line, the ground wire is insulated from the tower, reducing transmission energy loss and enabling ground wire carrier communication. When the ground wire voltage is adjusted, the gap discharges, allowing the ground wire to conduct with the tower, and providing various protective functions.

Ground wire insulators can be categorized into suspended and tension types based on installation and electrode structure, with mechanical and electrical failure load ratings of 70kN and 100kN respectively.

The ground wire insulators are pre-assembled with upper and lower electrodes before shipment, and the discharge gap has been adjusted and secured according to the design specifications, eliminating the need for on-site assembly.

Technical Standards:

JB 9680-1999 Insulating Wire Spheres for Overhead Power Line Insulator Strings

Model Description:

XDP - Disc-shaped suspension porcelain insulator for high-voltage overhead transmission line insulation ground wire

The number following the “—” represents the mechanical and electrical failure load value, in kN.

C - Channel structure

N - electrode type, N indicates tension type (��垂 type is not indicated).