What is Insulator?Insulator type
Insulator commonly known as porcelain, which is used to support an insulator wire, general overhead lines will be used in power engineering, Insulator also controls a special insulation, can play an important role in the overhead transmission lines.Insulator used for the early years of poles, and slowly developed in the high-pressure end of the wire connecting the tower were a lot of disk-shaped insulator, which is to increase the creepage distance, usually made of glass or ceramic, called Insulator.Insulator should not be due to various mechanical and electrical stress changes caused by environmental and electrical load conditions occur and fail, otherwise Insulator would not have a significant effect, it will damage the use and operation of the entire line of life.
Insulator used for the early years of poles, and slowly developed in the high-pressure end of the wire connecting the tower were a lot of disk-shaped insulator, which is to increase the creepage distance, usually made of glass or ceramic, called Insulator.Insulator for overhead power transmission lines plays a fundamental role in two, i.e., support wires and back to prevent the current, these two actions must be guaranteed, Insulator should not lead to a variety of electrical and mechanical stress and environmental conditions of the electrical load and failure occurs, Insulator otherwise would not have a significant effect, it will damage the use and operation of the entire line of life.
One end of the wire connecting the high pressure column linked to a number of disk-shaped insulator, which is to increase the creepage distance, usually made of glass or ceramic, called Insulator.In order to prevent dust contamination and the like attached to the surface on Insulator, passage is formed in the breakdown voltage across Insulator, i.e. creepage, so increased surface distance, namely creepage distance, discharge from the leakage distance along the insulating surface that is called creepage distance, creepage distance = surface distance / maximum system voltage, depending on the degree of contamination, re-contamination areas generally used creepage distance of 31 mm / kV per.
Insulator zero value means that the distribution is close to zero or equal to zero in operation Insulator potentials across Insulator.
Effect of the zero or low values Insulator: insulating line conductor depends on Insulator string, due to manufacturing defects, or external action, will continue Insulator insulation performance deteriorates, when insulating, insulation resistance or reduced to zero or a low value referred Insulator zero value, we have, on line testing, the proportion of zero or low values Insulator as high as 9%, which is another main reason for the company’s high rate of lightning trip line, Insulator is smooth, can reduce the wire interaction between the capacitive reactance to reduce current leakage.
What type Insulator?
(1) Insulator generally classified into punch-through type and a non-punch-through type.
(2) According to the structure can be divided into column (pillar) Insulator, suspension Insulator, Insulator needle, butterfly Insulator, Insulator tension, pollution prevention and Insulator bushing Insulator.
(3) by applications is divided into lines and power stations Insulator, electrical Insulator, wherein the punch-through type for line Insulator with male, butterfly, pin type, non-punch-through type and cross arms have Rod type, used in power plants, electrical breakdown may have a pin-type Insulator strut, the sleeve and the hollow pillar, with a non-punch-through type containers and porcelain rod post.
(4) used in overhead lines Insulator, Insulator commonly used needle, butterfly Insulator, suspension Insulator, porcelain cross arm, and a tensioning bar Insulator Insulator etc..
(5) There are now commonly used Insulator: Insulator ceramics, fiberglass Insulator, synthetic Insulator, Insulator Semiconductor.