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EP480 capped porcelain line post insulators

EP480 capped porcelain line post insulators were used in electrical system with creepage distance 786mm, which are also called electrical insulator.

Due to the weather changing, EP480 capped porcelain line post insulators will be breakdown by lightning, when the same time voltage is called breakdown voltage.

               

EP480 capped porcelain line post insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves. The EP480 capped porcelain line post insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission lines to utility poles and transmission towers. They support the weight of the suspended wires without allowing the current to flow through the tower to ground.

EP480 capped porcelain line post insulators technical parameters:

Type:   EP480-00
Nominal voltage kv 33

Nominal creepage distance

mm 786
Bottom fixing diameter mm M20
Top fixing diameter mm 73
Top groove radius mm 25
Cantilever strengh kn 4
Dry arcing distance mm 320
Power frequency flashover dry kv 127
Power frequency flashover wet kv 74
Power frequency withstand dry kv 131
Power frequency withstand wet kv 87
Impulse withstand voltage (bil) kv 205
Impulse flashover positive kv 209
Impulse flashover negative kv 346

EP480 capped porcelain line post insulators application:
EP480 capped porcelain line post insulator can be used on high voltage distribution power line, which is also called high voltage insulator.


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