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Insulator

3:34

Conductor or Insulator?

1:34

What Is the Best Insulator

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Ceramic / Porcelain Insulator Manufacturing 2

3:16

High-Voltage Test for Insulators

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765kv Replacement Of Polymer Insulator Transmissition Line

An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily. The property that distinguishes an insulator is its resistivity; insulators have higher resistivity than semiconductors or conductors.