Types of high voltage power cable connectors

High-voltage power cable connector is used for the connection of the power cable itself, there are connection joints, insulated intermediate joints, oil-filled power cables and steel pipe power cables and plug-stop joints and so on.
1. Ordinary connector it is used to connect two neighboring power cables. In the high-voltage power cable lines, through the joints in addition to connecting the core conductor to ensure electrical connectivity, the self-capacitance of oil-filled power cable connectors must keep the core oil flow unimpeded. But because the connector is operated manually at the scene, its process conditions are poor. Thus, the line core connection using crimping conditions, the core connection of the electric field concentration problem by increasing the thickness of the insulation, which reduces the joint working field strength to ensure the safe operation of the connector.
2. Insulated joints: insulated joints within the insulation structure and size and ordinary joints are the same. 110 ~ 220kV oil-filled power cable insulated joints, mainly used for large lengths of power cable lines, so that the joints at both ends of the power cable's metal jacket or metal shielding and semi-conductive layer electrically disconnected, so as to cross interconnections to reduce the sheath (or shielding layer),(或shield).
3. plug stop type joints: plug stop type joints are oil-filled power cable accessories electrical properties of the weakest link, but also the most complex structure of the joints. It is mainly used for the fall greater than the specified value of the crafty impregnated paper insulated power cable lines, cut off the oil circuit, to prevent the high-end power cable insulation dry, low-end power cable insulation oil pressure exceeds the specified value. 110kV single room plug stop intermediate joints, usually with an epoxy casing will be the two high-voltage power cables, the oil flow separation.
4. Steel pipe oil-filled power cable joints: copper pipe oil-filled power cable joints have two kinds of ordinary joints and half plug stop joints.

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