The insulator consists of cast-iron cap, toughened body and pin which are agglutinated by cement into an integrated piece. Cylindrical head has been adopted for the insulators, which is the most advanced structure in the world with superiorities such as less dimension, lighter weight, higher strength and longer creepage distance which can save metallic materials and reduce transmission line cost in order to adapt hot line operation, the traditional structure shape has been adopted for on the edge of cap. The insulators with the cylindrical head are most widely used in the world. We have accumulated a wealth of practical experiences for their operations.
The insulators are applied on the high voltage, ultra-high voltage and DC for insulation and suspension.
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