For ordinary people, it may not be clear what insulators are and why they should be wiped. It is known that insulators are devices installed between conductors with different potentials or between conductors and potential components. They can withstand voltage and mechanical stress and play an important role in overhead transmission lines of high-speed railway.
The reason why insulators should be wiped regularly is that when the high-speed railway is running, the dust in the air will fall on the insulators, and the more accumulated, if not removed in time, it will cause tripping or short circuit of the line, affect the power supply of the train, damage the components of the train, and then threaten the safety of the train operation. It can be said that without insulators to ensure power supply, there will be no safe operation of high-speed rail.