The insulator can withstand voltage and mechanical stress, to ensure that the wire and cross arm, pole tower have enough insulation, so as to ensure the safe operation of the circuit .
The insulator has good resistance to electrical breakdown and flashover performance, can effectively prevent current leakage and arc generation .
The insulator can withstand the sun, rain, climate change and corrosion of chemical substances, has good pollution resistance, reduce the insulation performance caused by pollution .
The insulator can adapt to various environmental conditions, including high temperature, low temperature and other extreme environment, at the same time has good fire performance .
The insulator has high mechanical strength, can withstand the load in the vertical direction of the wire and the horizontal direction of the tension, to ensure the safe operation of the line .
The pursuit of versatility and lightweight insulator design, making it small size, light weight, convenient maintenance, reduce the operating cost .
Insulators are divided into: post (pillar) insulators, suspension insulators, pin insulators, butterfly insulators, tension insulators, anti-pollution insulators and sleeve insulators. In addition, the porcelain cross arm is considered as a broad insulator.
