In the early years, insulators were mostly used on telephone poles. With the development of science and technology, many disc-shaped insulators were hung on one end of the high-voltage wire connection tower to increase the creepage distance. They were usually made of glass or ceramics. , is called an insulator. Insulators play two basic roles in overhead transmission lines, namely supporting conductors and preventing current from returning to ground. These two roles must be guaranteed. Insulators should not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions. Otherwise, the insulator will not play a significant role and will damage the use and operating life of the entire line.
