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Electrical standoff insulators is made from polymer, also called polymer standoff insulator, as one of polymer insulators.

Voltage rating of electrical standoff insulators:
This is only meant to be a guide for indoor service. Fiberglass reinforced polyester insulators mounted within a suitable electrical cabinet are considered indoors even though the cabinet itself is outdoors. An electrical standoff insulator will withstand its rated voltage continuously but industry standards or other specifications may require a different spacing from conductor to ground for a particular voltage. Wet or dirty conditions may require derating an insulator.

Outdoor Use
As one main of polymer insulator, electrical standoff insulators are primarily intended to be used indoors or inside a suitable enclosure. Insulators 4610 and 4640 should not be used upside down if there is a possibility of the center hole filling with water.

Short Time Electrical Strength of electrical standoff insulators:
For most electrical standoff insulator designs, this is the external flashover voltage in air. A few insulators will puncture instead. The value given is an average of 15 parts tested.

Except electrical standoff insulators, we also produce other polymer insulator, such as polymer pin type insulator, post insulator and so on. 

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