High-voltage power cable connection head for the power cable itself, there are connecting joints, insulated middle fittings, oil-filled power cables and steel pipe power cables and plug-type joints.

1. Common connector

It is used to connect two adjacent power cables.

In the high-voltage power cable lines, through the connector in addition to connecting the cable core conductor to ensure electrical connectivity, the self-contained oil-filled power cable connector must keep the core flow of oil. But the connector is in the field manual operation, the process conditions are poor. Therefore, in the core connection using crimping conditions, the core connection of the electric field concentration problem of the problem, by increasing the thickness of the insulation, in order to reduce the joint field strength to ensure the safe operation of the connector.

2. Insulated connector

Insulated joints within the insulation structure and size of the same common joints. 110 ~ 220kV oil-filled power cable insulation connector, mainly used for large-length power cable lines, so that the ends of the power cable metal sheath or metal shield and semi-conductive layer in the electrical disconnect, in order to cross-connect, Sheath loss.

3. Plug-in connector

The plug-in connector is the weakest part of the electrical performance of the oil-filled power cable accessories and the most complex connector. It is mainly used for the distance of more than the specified value of the impregnated paper insulated power cable lines, cut off the oil, to prevent high-end power cable insulation dry, low-end power cable insulation oil pressure exceeds the specified value.

110kV single chamber stopper middle fittings, usually with an epoxy casing to separate the oil lines of the two power cables.

220kV dual chamber plug stopper, with two epoxy casing to separate the oil lines of the two power cables, in the two power cables plug tube above an external cavity, two contain the power cable cavity and An external chamber oil flow connected, was two sealed structure.

4. Steel pipe oiling power cable connector

Brass oil-filled power cable connector with a common connector and half plug only two.

Ordinary connection connector for the length of the power cable manufacturing connection, and its internal insulation structure is generally compatible with the self-contained oil-filled power cable connector, the shell is a slightly larger diameter than the power cable pipe brass. Semi-stopper connector for longer steel pipe oil-filled power cable lines. It is designed to avoid the loss of a large number of power cable sleeves in the event of an oil spill. It is used to separate the oil supply section so that the oil in the two sections flows through the power cable insulation or bypass pipe. In the joint of the steel pipe and power cable pipe connection, the use of sealed structure of the power cable circuit separately.

The above is a brief introduction to the power cable connector, learn more about the power cable content, please pay attention to kingsignal official website.