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Working principle of lightning arrester

August 17,2023


Lightning arrester is a low voltage high resistance open circuit state and a high voltage low resistance short circuit state. It can withstand large currents of hundreds of amperes by combining overvoltage protection electronic devices in parallel with power lines and signal transmission lines. When encountering lightning strikes, high voltage, and high current, a short circuit immediately occurs.

At the same time, the main power switch is disconnected to protect the computer equipment.

When it is installed and used in series, its physical surface morphology and signal lightning arrester require low high-frequency signal loss.

The internal gap of the lightning arrester is placed inside the arc extinguishing tube made of gas producing material, and the external gap separates the arc extinguishing tube from the power grid.

Lightning overvoltage causes internal and external gap discharge, and the high temperature of the internal gap arc causes the production of gas substances, resulting in a rapid increase in gas pressure in the pipeline. High pressure gas sprays out from the nozzle to extinguish the arc. Tubular lightning arresters have a large surge current capacity and can be used in areas with large lightning current amplitudes. However, due to the high and dispersed discharge voltage of MOA, its cutoff and protection performance are poor. Mainly used for incoming line protection and weak insulation protection of substations and power plants.

Worktime:8:00 ~ 17:00


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