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The difference between power distribution box and power distribution cabinet
1. Conceptual distinction 1. Distribution box The distribution box is a small power distribution box that contains power switches and safety devices. The structure is relatively simple, and is mostly used for terminal power distribution. The distribution box is the last level of power distributio...Read more -
The physical properties of a lightning arrester
Overvoltage limiter. When an overvoltage occurs, the voltage between the two terminals of the arrester does not exceed the specified fixed value, which protects the electrical equipment from overvoltage damage; after the overvoltage acts, the system can quickly return to normal state. 1. Valve p...Read more -
The difference between surge protector and arrester
The difference between surge protector and arrester 1. In terms of application field, it can be divided into voltage level. The rated voltage of the arrester ranges from <3kV to 1000kV, low voltage 0.28kV, 0.5kV. The rated voltage of the surge protector is less than 1.2kV, 380, 220~10V~5V. 2. ...Read more -
Production process of insulating polymer in high-voltage power transmission equipment
Production process of rubber products 1. Basic process With the rapid development of modern industry, especially the chemical industry, there are many kinds of rubber products, but the production process is basically the same. The production process of general solid rubber (raw rubber) as raw mat...Read more -
Advantages of composite/polymer insulator
Advantages of composite insulators Composite insulators are completely different from ceramic or glass insulators from structure to material. The performance is also very different, mainly the following: high strength, light weight Anyone who has been exposed to synthetic insulators knows that a ...Read more -
Insulation umbrella structure of composite insulators
Composite insulators are easy to form and have a variety of umbrella structures. The parameters describing the composite insulator umbrella structure include the morphological parameters of the umbrella skirt, such as the inclination of the umbrella skirt, and the extension ratio. , Such as isome...Read more -
The aging form of insulators
The composite insulator consists of a core rod, a shed skirt and a connecting fitting. The mandrel is made of FRP, which is used to provide the mechanical properties of the insulator. The sheath is connected to the surface of the mandrel by an adhesive to protect the mandrel. The connecting fitti...Read more -
Structure and brief history of composite insulators
Composite insulator, also known as synthetic insulator, was first born in Germany. It was successfully developed by Hearst Company of Germany in 1967 and put into operation on 123kV line. It has more than 30 years of operation experience. Composite insulators have been rapidly developed in the Un...Read more -
Advantages of polymer insulators
Composite insulators are completely different from ceramic or glass insulators from structure to material. The performance is also very different, mainly the following: 1.1 high strength, light weight Anyone who has been exposed to synthetic insulators knows that a composite insulator is very lig...Read more -
How do we classify the polymer insulator?
According to the definition of “Basic Terminology of Power Engineering” GB/T50297, an insulator is a device used to support and insulate a conductor. Insulators The main insulators made of porcelain, glass or organic materials are called porcelain insulators, glass insulators or organ...Read more -
Detection technology of composite insulator in operation
With the development of the power industry, the transmission capacity has increased sharply, and the voltage level has been continuously improved. 110, 220, 500, 750 and even 1000 kv have emerged and matured. The power system has higher and higher requirements for insulators, and new insulators a...Read more -
What’s the working principle of metal oxide surgearresters?
The basic working principle of metal oxide surge arresters is a zinc oxide valve disc sealed in a porcelain sleeve. The zinc oxide valve is based on ZnO as a matrix, and a small amount of Bi2O3、MnO2、Sb2O3、Co3O3、Cr2O3 non-linear resistors are added. It has much better nonlinear volt-a...Read more