China is an insulator manufacturer and Chinese insulator exporting occupy very high portion in worldwide insulator market. Recent years the exchange rate US dollar to RMB has changed a lot which influence Chinese insulator exporting.
According to materials, pin type insulator can be divided into composite pin type insulator and porcelain pin type insulator.
Composite railway insulator is also called Composite Railway Insulator, Silicone Rubber Railway Insulator, or Polymer Railway Insulator. Orient Group can provide composite railway insulator
In 1980, Furukawa Electric developed composite insulators that had advantages of light weight and flexibility. And in 1994 the voltage of composite insulator was extended to 275kV with the length 7m/unit--the world’s largest
porcelain disc suspension insulator,ceramic suspension insulator
About porcelain /ceramic disc suspension insulator:
What is a porcelain disc suspension insulator or a ceramic suspension insulator?
Disc suspension insulator, called porcelain disc suspension insulator or ceramic suspension insulator, is an assembly of one or more shells with metallic fittings. They are nonrigid supporting type because of their material of ceramic. A porcelain disc suspension insulator can be divided into ball & socket type and clevis & tongue type. This structure enables them form the insulator string by fitting into themselves one another as per voltage requirement. A ceramic suspension insulator set complete with the fittings is used to carry a line conductor or conductors at its lower end. The top of the ceramic suspension insulator is fixed to the crossarm of the tower.
anti-pollution type suspension insulator
Hardware of porcelain disc suspension insulator:
Ball and socket type porcelain disc suspension insulator: U70BL, ANSI 52-3, and ANSI 52-5…
Clevis and tongue type porcelain disc suspension insulator: ANSI 52-4…
The way of the use of disc suspension insulator: calculate the numbers of the suspension insulators according to different voltage and connect the suspension insulators together one by one. Porcelain/ceramic disc suspension insulators can be used on distribution lines, high voltage transmission lines, EHV, UHV, HVDC transmission lines.
clevis and tongue type suspension insulator ball and socket type suspension insulator
Types of porcelain disc suspension insulator or ceramic suspension insulator:
According to ANSI C29.2 and IEC60383:
Code number: ANSI 52-1, ANSI 52-2, ANSI 52-3, ANSI 52-4, ANSI 52-5, ANSI 52-6, ANSI 52-8, ANSI 52-9A
U70BL, U70BS, U100BL, U120B, U160BS, U210B, U300B, U530B
(H means anti-pollution type; U70BL means 70KN ball and socket porcelain disc suspension insulator with 146 section length)