High voltage earth wire disc suspension 70 kN toughened glass insulator U70C glass insulators

Structural composition of earth wire disc suspension glass insulator:

Insulated parts: usually made of insulating materials such as glass, ceramics, or silicone rubber, with good insulation performance, able to withstand high voltage and prevent current leakage to the ground. For example, tempered glass insulators have the characteristic of zero value self rupture, which is easy to detect, and the new surface is still a smooth glass body after lightning burns, which can maintain sufficient insulation performance and mechanical strength.

Following is standard type glass insulator 40-550Kn:

Quick detail：

Working principle of earth wire disc suspension glass insulator

Insulation function: mainly used in high-voltage overhead transmission and distribution lines to maintain insulation between the ground wire and the tower, as well as between the ground wire and the tower, to prevent current leakage to the ground through the ground wire, ensuring the normal operation of the power system, while bearing electrical and mechanical stresses during line operation.
Pollution resistance: By increasing the creepage distance of insulators and adopting special umbrella shaped structures, the insulation performance of insulators in polluted environments can be improved to prevent pollution flashover accidents. For example, the umbrella shaped opening of pollution resistant insulators has a smooth and edge free skirt, low dust accumulation rate, and good self-cleaning performance in wind and rain.

Application scenarios of earth wire disc suspension glass insulator

High voltage transmission lines: widely used in high-voltage overhead transmission lines of different voltage levels, such as 110kV, 220kV, 500kV, etc., to support and insulate ground wires, ensuring the safe and reliable operation of transmission lines.
In areas with severe pollution such as industrial dust, chemical, saline alkali, coastal areas, and foggy environments, the anti pollution products of ground wire disc-shaped suspension insulators can better adapt to the environment, reduce the risk of pollution flashover, and ensure the stable operation of the line.

The Production process flow:

The production process of glass insulators in Jiangxi Huayao Electric Co.,Ltd is as follows:

Mix raw material=>melt glass liquid=>press to glass insulator shape=> tempering treatment=>cold and shock test=> Glue assembly=> routine test and other test=> Finished products package

Standard of glass insulator:

The tests have been performed in accordance with:
GB/T1001.1-2021 Insulators for overhead lines with a norminal voltage above 1000V Part1: Ceramic or glass insulator units for a.c. systems Definitions, test methods and acceptance criteria (IEC 60383-1:2021 MOD)
GB/7253-2019 Insulator for overhead lines with a nominal voltage above 1000V-Ceramic or glass insulator units for a.c. systems-Characteristics of insulator units of cap and pin type (IEC 60305:2021 MOD)
IEC 60383-1:2023 Insulators for overhead lines with a norminal voltage above 1000V
IEC 60120:2020 Dimensions of ball and socket couplings of string insulator units
Jiangxi Huayao electric Co.,ltd strictly compliance with above standard. We do the factory test report as above standard.
We always do following test for each products:
1. Verification of the Dimensions
2. Verifications of Displacements
3. Locking system test
4. Galvanized test
5. Thermal shock test
6. Mechanical Failing Load Test
7.Power frequency puncture withstand test

Package of the glass insulator

Standard export wooden cases Non fumigation wooden box

Customer visit：