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How do insulators insulate?

Jun 22, 2019

Insulator is a special insulation control which can play an important role in overhead transmission lines. In the early years, insulators were mostly used for electric poles. They were gradually developed into high-voltage wire connection towers with a lot of disc-like insulators hanging at one end. They were used to increase the climbing distance. Insulators should not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions. Otherwise, insulators will not have a significant effect and will damage the service and operating life of the whole line.
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Insulators play two basic roles in overhead transmission lines, that is, supporting wires and preventing current from returning to earth. These two important roles are that insulators can play a good insulation effect. In the operation life of the whole line (usually 40 years), these two functions must be guaranteed. The insulator should not fail due to various electromechanical stresses caused by changes in the environment and electrical load conditions. Otherwise, the insulator will not have a significant effect and will damage the service and operation life of the whole line.

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