Overview:

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

Ground wire insulators are used to support the ground wire in high-voltage overhead transmission 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 set, gap discharge occurs, the ground wire is connected to the tower, and various protective functions are activated.

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

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

Technical Standards:

JB 9680-1999 Insulating Disc-type Suspended Porcelain Insulators for High-voltage Overhead Transmission Lines

Model Description:

XDP - Disc-shaped suspension porcelain insulator for overhead transmission line insulating ground wire

The number following “—” represents the mechanical breakdown load value, in kN.

C - Channel structure

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