Power cables are used to transmit and distribute high-power electrical energy. According to different insulating materials, they can be divided into oil-impregnated paper-insulated power cables, rubber-insulated power cables and PVC-insulated power cables. The most widely used in engineering is t...

1. Different cables 1. Power cable Power cables are cables used to transmit and distribute electrical energy. Power cables are often used in urban underground power grids, power station lead-out lines, internal power supply in industrial and mining enterprises, and underwater transmission lines a...

1. Cable connection method Power cord connectors are divided into “+ word connection method”, “- word connection method”, “T-word connection method” and so on. Seams should be tangled, smooth and unnecessary. Before the wire ends are disconnected, the clamp wir...

The pollution degree of an insulator refers to the pollution degree of a certain geographical area where the insulator is located. Line flash pollution will cause large-scale power outages and seriously affect the reliability of power supply. In order to prevent pollution flashover accidents, it ...

1. Suspension insulator It is widely used in the insulation and mechanical fixing of high-voltage overhead transmission lines and soft busbars in power generation and substations. Among the suspension insulators, it can be further divided into disc suspension insulators and rod suspension insulat...

A lot of disc-shaped insulators are hung at one end of the high-voltage wire connection tower. It is to increase the creepage distance. It is usually made of glass or ceramics, which is called an insulator. In order to prevent dust and other contaminants from adhering to the surface of the insula...

The cable joint is also called the cable connector. After the cable is laid, in order to make it a continuous line, each segment of the line must be connected. The cable joints in the middle of the cable line are called intermediate joints, and the cable joints at both ends of the line are called...

YJV cable is a commonly used type of power cable. Nowadays, many people refer to YJV cable when talking about cable. As the backbone cable in power transmission, YJV cable is like the arterial blood vessels in human blood vessels, or the trunk of a tree, which shows its important position in powe...

Power cables are relatively common cables for distributing and transmitting electrical energy. They are usually used in urban underground power grids, internal power supply in industrial and mining enterprises, and so on. People who have some knowledge of cables will find that power cables have m...

1. Before the on-load tap-changer is put into operation, it should be checked whether the oil level is normal, there is no oil leakage, and the control box should be well-proofed from moisture. 2. After the newly commissioned on-load tap-changer gas relay is installed, the operator should release...

The efficacy of insulating heat shrinkable sleeves The most critical function of insulating heat shrinkable sleeves is of course insulation maintenance. The efficacy of heat shrinkable sleeves is very common: anti-corrosion, acid and alkali resistance, anti-electricity (insulation), and anti-leak...

Application of SF6 Load Switch in Distribution Network The medium-voltage switches used in general hub substations all use circuit breakers as control and protection devices, and must have automatic reclosing. However, the power supply capacity of each power distribution station in the ring netwo...