One end of the high-voltage wire connection tower is hung with a large number of disk-shaped insulators, which are used to increase the creepage distance, usually made of glass or ceramic, and are called insulators. In order to prevent dust and other contamination from adhering on the surface of the insulator, the formation of the passage is broken by the voltage across the insulator, that is, creepage, so increase the surface distance, that is, the creepage distance, the distance of discharge along the insulation surface, that is, the leakage distance is called the creepage distance, the creepage distance = Surface distance / system maximum voltage, depending on the degree of contamination, heavy dirt areas generally use a creepage distance of 31 mm / kV.
A zero-value insulator refers to an insulator whose potential distribution across the insulator is close to zero or equal to zero during operation.
Effect of zero or low value insulator: The insulation of the line conductor depends on the insulator string. The insulation performance of the insulator will be degraded due to manufacturing defects or external influences. When the edge resistance is reduced or zero, it is called low value or Zero-value insulators, we used to test the line. The ratio of zero-value or low-value insulators is as high as 9%. This is another main reason for the high lightning strike rate of the company. The insulator is smooth and can reduce the wire. The capacitive reactance to reduce the loss of current.
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