Composite insulator components

Composite insulator components include End Fittings, Fiber glass rod, and Silicone rubber housing. Two metal end fittings radial compressed onto the fibreglass rod. The process is highly automated.

Composite insulator components

Composite insulator components:
1) Two metal end fittings radial compressed onto the fibreglass rod.
2) An epoxy resin fibreglass rod that has a high mechanical resistance utilising ECR glass fibre reinforcement.
3) A high temperature and pressure vulcanized (HTV) shedded housing that is injected and vulcanized in one shot, directly on the fibreglass rod already equipped with the crimped end fittings

Production is relatively simple and the process is highly automated. This guarantees its high quality, and total reliability.
All our range of our insulators from the simplest to the most demanding of applications is produced with the same materials and technology.

End Fittings:
End fittings are crimped onto the fibreglass rod. Tension insulators are crimped with a radial compression technique and insulators that do not experience any significant tensile loads are crimped with hexagonal dies.
The standard end fittings are of hot dipped galvanized forged steel or malleable cast iron. They are also available in stainless steel, aluminium alloy and copper alloy.

Fiber glass rod:
Our fibreglass rod is constructed from ECR glass filaments impregnated with epoxy resin; this has the characteristic of a high temperature vitreous transition. Unlike a lot of Insulator manufacturers we produce our own rods using a pultrusion process. Our rods produced by this process display very high mechanical strength, excellent dielectric strength, and acid resistance and can be used in high service temperatures.
We have two pultrusion lines and thanks to their high productivity, this covers most of our needs.
The manufacturing process is continuously monitored for its consistency of resin impregnation (reactivity measurement of exothermic peak) and the finished rod is tested for mechanical strength (transverse mechanical compression test).

Silicone rubber housing:
The grey HTV silicon rubber material is injected into the mould under high temperature and pressure directly on to the glass resin rod which already has had the end fittings attached. This method ensures a unique homogeneous housing that adheres both to the rod and to the end fittings perfectly, this ensures that the core is protected from any penetration of water, pollution or acid.

The HTV (High Temperature Vulcanizing) silicone compound we use is formulated and produced on our behalf by Dow Corning, following our specification.

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Orient Group is a professional manufacturer and exporter of composite suspension insulator and porcelain disc suspension insulator.