Overview:

The earth wire insulator is composed of two parts: the insulator and the protective gap. The protective gap consists of electrodes fixed to the insulator with 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 suspension type and tension type according to their installation form and electrode structure, with mechanical and electrical failure load ratings of 70kN and 100kN respectively.

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

Technical Standards:

JB 9680-1999 Insulating Wire Suspenders for Overhead Transmission Lines with High Voltage, Disc-Type Porcelain Insulators

Model Description:

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

The number following “—” is the mechanical failure load value, in kN.

C - Channel structure

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