How to distinguish between insulators and arresters on towers？

For the first contact with electrical products, you will not be able to distinguish between insulators and arresters, and confuse them both，Let's talk about how to distinguish the two ones.

1. The installation location is different
Insulator: It is installed between conductors of different potentials or between conductors and grounding components, which can withstand voltage and mechanical stress.

Surge arresters: Surge arresters are usually connected between the grid wire and the ground wire, but sometimes they are also connected next to the windings of electrical appliances or between the wires.

2. The shape is different

Insulators: There are many types and shapes. Although the structure and shape of different types of insulators are quite different, they are all composed of two parts: insulating parts and connecting fittings.

Surge arresters: divided into many types, there are metal oxide arresters, line-type metal oxide arresters, gapless line-type metal oxide arresters, fully insulated composite jacket metal oxide arresters, and detachable arresters.

3. The characteristics are different

Insulator: It should not fail due to various electromechanical stresses caused by changes in the environment and electrical load conditions, otherwise the insulator will not have a significant effect and will damage the service life and operating life of the entire line.

Surge arrester: AC gapless metal oxide arrester has excellent nonlinear volt-ampere characteristics, good response characteristics, no freewheeling, large flow capacity, low residual voltage, strong ability to suppress overvoltage, pollution resistance, anti-aging, and is not affected by altitude Constraint, simple structure, no gap, tight seal, long life and so on.