The Usage Characteristics of Porcelain Insulator

 In the early days, insulators were mainly used for utility poles. With the development and needs of society, they were gradually applied to high-voltage wire connection towers. They were mainly used to increase the creepage distance (creepage distance refers to the distance between two conductive parts, or one The shortest spatial distance measured between the conductive part and the device and the easily accessible surface along the surface of the insulating material. In order to prevent dust and other dirt from adhering to the surface of the insulator, a path is formed by the voltage across the insulator, that is, creepage.)

Depending on the degree of contamination, creepage distances of 31 mm / kV are generally used in heavily contaminated areas. Usually made of glass or ceramic. Insulators have two most basic functions in overhead transmission lines: supporting wires and preventing current from returning to the ground. In order to ensure these two basic functions, insulators should not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions.  Otherwise, it will damage the life and service life of the whole line.

Insulators are made of porcelain parts, steel feet (or screw sleeves) with Portland Cement No. 525 or higher and quartz sand cement. The steel feet are pressed into the porcelain parts with deep grooves to prevent the steel feet from loosening. There is an elastic pad between the top of the steel feet and the porcelain. The surface of porcelain is generally brown glaze or white glaze, and the steel feet are hot-dip galvanized. It is a metal accessory that connects and combines various devices in the power system and plays a role in transmitting mechanical loads, electrical loads, and some protection.

Butterfly insulators and pin insulators in porcelain line post insulators are mainly used for high and low voltage transmission lines. Suspended insulators are used for high voltage transmission lines. Ceramic insulators are a special type of insulation control. It can play an important role in overhead transmission lines.

Ceramic insulators play two basic roles in overhead transmission lines, namely supporting wires and preventing current from returning to the ground. These two functions must be guaranteed. Ceramic insulators should not be caused by various electromechanical stress caused by changes in environmental and electrical load conditions. Failure or the ceramic insulator will not have a significant effect, which will damage the use and operating life of the entire line.

Pin Insulators

Pin insulators are used for high-frequency overhead power lines with a power frequency of 6-20kV to insulate and support wires. The old type of insulator is divided into four varieties of 6, 10, 15, 20kV according to the rated voltage. Each type is divided into two types: straight iron feet and straight wood feet according to the type of steel feet. There are three types: reinforced insulation type 1, reinforced insulation type 2. We are committed to the introduction of high-tech technology and talents, and consistently put the improvement of product quality and scientific and technological content first, and constantly improve the production process and increase production efficiency, in order to obtain good social and economic benefits, and will use excellent products, reasonable The price, the best service, build the bridge of our cooperation, work together with you, make progress together, and strive for prosperity.

With the development of the country's economic level, the speed and level of power development have reached a fairly high level. The application of electricity has been spread almost everywhere, and the demand for fittings has reached unprecedented levels. Power fittings can be divided into different types according to different classification standards. Most of the fittings need to withstand large tensile forces during operation, and some must also ensure good electrical contact at the same time. It is related to the safety of the wire or tower, even if one Damage may also cause line failure. Therefore, the quality, correct use and installation of hardware have a certain impact on the safe power transmission of the line.

We have always put the improvement of product quality and technological content first, and constantly improve the production process and production efficiency, in order to obtain good social and economic benefits, and will provide excellent products, reasonable prices, the best service, From the bridge of our cooperation, work together with you to make progress and prosperity.