
Polymer insulators are made from resins, a relatively
uncommon material for insulator compared with porcelain. With high electrical
resistance, it can moderate the voltage for stable operation. Polymer insulator
being a common product applied in electronic device, it can moderate the
voltage for stable operation with high electrical resistance.
An electrical insulator is a material
whose internal electric charges do not flow freely, and which therefore does
not conduct an electric current, under the influence of an electric
field. A perfect insulator does not exist, but some materials such
as glass, paper and Teflon, which have high resistivity, are very good
electrical insulators. A much larger class of materials, even though they may
have lower bulk resistivity, are still good enough to insulate electrical wiring and cables. Examples include
rubber-like polymers and most
plastics. Such materials can serve as practical and safe insulators for low to
moderate voltages (hundreds, or even thousands, of volts).
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