Glass insulator is popular those years

Why glass insulators are popular those years?

The number of disc-shaped suspension tempered glass insulators used in high-voltage and ultra high voltage AC/DC overhead transmission lines has been increasing year by year.

Glass insulators use special glass as insulators, manufacturing technology is more mature, good weathering resistance, glass insulators include AC 70kN-550kN and DC 160kN-550kN series.

With the acceleration of the construction of the Chinese State Grid project, the market demand for glass insulators is growing rapidly, in which the demand for glass insulators in the field of ultra-high voltage insulators has increased significantly, and the market size of glass insulators in China will be 0.229 billion yuan in 2022.

As a result, traditional suspended porcelain insulators for power lines are gradually decreasing. There is even a trend in France and Italy to completely or largely replace suspended porcelain insulators.

By 1973, over 70 countries had adopted tempered glass insulators. The total number of installations on 35-750 kV transmission lines exceeds 100 million pieces; By 1974, the use of tempered glass insulators by the French company Sedever alone had reached 150 million pieces, with an annual increase of 10 million pieces. The total length of 400-500 kV AC transmission lines with glass insulators installed is over 40000 kilometers. By 1975, 55-60% of the suspension insulators put into operation were tempered glass insulators (excluding the United States), and 80% of the world's DC transmission lines were installed with tempered glass insulators, while 90% of newly built lines in France used tempered glass insulator strings; By 1977, the total length of transmission lines with tempered glass insulators in operation had reached 50000 kilometers; By 1978, the number of tempered glass insulators in operation worldwide had reached 190 million, some of which had been in operation for almost 40 years; By 1979, the number of tempered glass insulators in operation worldwide had reached 200 million, and over 100 countries had installed tempered glass insulators on their transmission lines. The voltage levels of the installation lines are: AC 20, 25, 101321382, 20225400500 and 750 kV, DC ± 200 and ± 400 kV. The mechanical and electrical damage loads of the tempered glass insulators used include 6, 7, 8, 9, 10, 12, 14, 15, 16, 21, 22, 30, 40, 50, and 55 tons, with the most commonly used being 6, 16, 21, and 30 tons. Such as U160B, U160BP, U160BSP, U210B,U210BP, U300B, U300BP etc

(Records from Xi'an High Voltage Apparatus Research Institute)

Jiangxi huayao electric Co.,ltd mainly produce above items. We have superior quality and favourable price for this.

Huayao advantage products are glass insulators with a capacity of 40kN-550kN, which can meet the requirements of 10kV-500kV ultra-high voltage and extra high voltage transmission and transformation lines.

Huayao strictly comply with GB, ANSI, BS, DIN, AS, IEC standard designs, applicable to power transmission lines and substations.

Jiangxi huayao electric Co.,ltd wins customer recognition through excellent quality, affordable prices, and first-class service.