The creepage distance of composite post insulator refers to the creepage distance of insulator.
Creepage distance: between two conductive parts measured along the insulating surface, under different use conditions (under different working voltages), the insulating material around the conductor is electrified, resulting in the electrification of the insulating material. The radius of this charged area is the creepage distance of the insulator.
Crawling means that an ant must go through the shortest distance from one charged body to another, which is the creepage distance. There are specific provisions in the national standard. The calculation method of creepage distance is different for different shapes of insulation. The creepage distance depends on the effective value of the working voltage and the material of the insulator.
The creepage distance is defined in GB / T 2900.18-1992 Electrotechnical terminology low voltage apparatus standard: the creepage distance refers to the shortest distance between two conductive parts with potential difference along the surface of insulating material.
