This structure is currently used by some foreign manufacturers, relatively less used in China, in the domestic manufacturers, generally use the following structure form: the characteristics of this structure is mainly in high mechanical strength, good anti-seismic performance, is conducive to the realization of higher voltage grade products.
The upper and lower parts are flanges, and the middle part is connected by an epoxy tube. Inside the epoxy tube is a zinc oxide resistance piece, and between the resistance piece and the epoxy tube is filled with fillers (mainly silica gel fillers to reduce the vibration of the resistance piece). Another coat is silicone rubber insulation material, which adopts the one-time molding process for injection molding.Silicone rubber is the use of special binder (bottom coating), under certain conditions between the epoxy tube and silicone rubber to form molecular bonding, in order to ensure the sealing performance of the arrester.
This type of arrester has been designed and operated for decades and is currently one of the most reliable construction types available.
Silicone rubber: used on the compound coat of lightning arrester
1. Light weight, small size and maintenance free.
2. Explosion-proof: due to the elasticity of silicone rubber, the shrinkage ratio of up to 700%, the arrester compound coat shrinkage ratio is also 300-500%, no matter what reason caused by the explosion-proof groove start, there will be a elastic buffer effect in the silicone rubber coat.There are silicone filler inside, and the jacket has shrinkage elasticity, which greatly reduces the impact when the arrester blasting, so it will not harm the surrounding related equipment.
4. Anti-aging and anti-ultraviolet characteristics, silicone rubber is less affected by the environment.
