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Will the high voltage cable leak when it rains? What is the reason?
Date: 2019-06-06    Hit: 1445    Burst: 
The answer is: no leakage. Then some people will ask: some high-voltage cables are with leather cables, some are bare cables, and the high-voltage wires are made of metal. On rainy days, rain will wet the high-voltage wires to all the insulation parts of the brackets. Why not leak electricity? ? What is the reason? Wire and cable manufacturers tell you:

the insulator string in the application, the insulator design is to consider the rain, the insulator is like an inverted bowl, one side is water, below there is no water. Inside the bowl, there is a circle of wrinkles to increase the creepage distance of the insulator. Even if it is resistant to stringing, it will not cause insulation insulation failure due to rain.

take a closer look at the porcelain bottle, the upper side is light, the downward side is wavy, which is to increase the creepage distance. When it rains, the porcelain bottle is dry on the side, and the upper layer and the next layer are also dry. Of course, there is no leakage.

the air is a good insulator, even in the rainy days, it is not easy to conduct electricity. Under normal circumstances, the conductor that is closer to the high-voltage line is the earth. If the high-voltage line wants to leak electricity, it must penetrate the air to leak electricity to the earth. However, because the high-voltage lines are built very high, even if it is rainy, it cannot penetrate the air.

 The wires and the electric poles are connected by insulated pillar porcelain bottles or lightning arresters or suspended objects. Considering the problem of rain or dust pollution, these three are umbrella skirts, so the insulation performance can be ensured when it rains. To avoid leakage caused by creepage along the rainwater.

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