what is an insulator?
An insulator is a poor conductor or a device made of insulating material, and it's used for separating or supporting conductors. It depends on what you want to transmit,such as electricity, heat,cold, or other particular type of energy. This article mainly refers to electrical insulation, and what is an electrical insulator?
An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it very hard to conduct an electric current under the influence of an electric field. A perfect insulator does not exist, then what is good insulator quality? Good insulators are the ones that do not have free electrons. Some of them are non metals like plastic, rubber, glass and air.
What is an insulator in physics?
Electrical insulation is the absence of electrical conduction. Insulator must support significant voltage without electrical breakdown.high voltage system insulation materials include ceramic or glass wire holders, gas, vacuum, and simply placing wires enough far apart to use air as insulation.
What is an insulator in telegraph and power transmission?
Insulator used for high-voltage power transmission is made from glass, porcelain or composite polymer materials. High voltage insulator is required at the points where they are supported by utility poles or transmission towers as insulating supports. Insulator is also required where the wire enters buildings or electrical devices to insulate the wire from the case.