FS composite cross arm insulator adopts hardware made of special steel, and the end of hardware adopts labyrinth design principle,

with multi-layer protection and good sealing performance, which solves the most critical problem of insulator interface electrical

breakdown. The most advanced computer controlled coaxial constant pressure crimping process in the world is adopted for the

connection between the fittings and the mandrel, and a fully automatic acoustic emission flaw detection system is equipped to ensure

the reliability and stability of the connection between the fittings and the mandrel. ERC high-temperature acid resistant rod is used

as the core rod, and the interface between the core rod and silicone rubber is coated with a special coupling agent. The umbrella cover

adopts the one-time overall molding process under high temperature and pressure, and the two-stage vulcanization process monitored

by the computer extends the service life of the product.

1、 Service conditions:

（1）. The ambient temperature is – 40 ℃~+40 ℃, and the altitude is not more than 1500m.

（2）. The frequency of AC power supply shall not exceed 100H, and the maximum wind speed shall not exceed 35m/s.

（3）. The earthquake intensity shall not exceed magnitude 8.

2、 Features:

（1）. Small size, light weight, convenient for transportation and installation.

（2）. High mechanical strength, reliable structure, stable performance, and large margin for safe operation provide guarantee for the

line and safe operation.

（3）. The electrical function is superior. The silicone rubber umbrella can have good hydrophobicity and mobility, good pollution

resistance, strong pollution flashover resistance, safe operation in heavily polluted areas, and no manual cleaning is required. Zero

value maintenance can be avoided.

（4）. It has the characteristics of acid resistance, alkali resistance, heat aging resistance and electricity resistance, good sealing

performance, and can ensure that its internal insulation is not affected by moisture.

（5）. Good brittleness resistance, strong shock resistance, and no brittle fracture accident.

（6）. It is interchangeable with porcelain and other insulators.

Product type of composite cross arm insulator

: FXBW — rod suspension insulator

: FPQ —- Composite pin insulator

: FZSW —- Composite post insulator

: FS —— Composite cross arm insulator

: FCGW – composite dry wall bushing

: FQE (X) – Composite Insulators for Electrified Railways

: FQJ —— Roof composite insulator for electrified road

Product description of composite cross arm insulator

◆ F represents composite; P represents needle type; Q represents antifouling type

◆ 4 stands for antifouling grade

◆<10/3>Rated voltage (kv)/rated bending load (kN)

◆ T-iron cross arm; L-FRP cross arm; M-Wooden cross arm

◆<20>steel foot diameter (mm)

◆ Color: dark red is omitted; H-gray; G – green;

What is cross arm insulator called line insulator?

Insulators used for overhead lines are called line insulators The insulators used to support bus bars or disconnectors in power

stations are called station post insulators. The role of bushing is to connect the internal live terminal of electrical equipment

with the external system or connect the indoor live terminal with the outdoor system. Porcelain sleeve type power station

insulator is used as the container and insulating sheath of electric instrument transformer, current transformer, lightning

arrester and other equipment. Another type of insulator is the cable end, through which the cable is connected to the overhead line.