The plug-in head is a new type of connection structure between a sleeve terminal and a European plug-in head. It is characterized by using a soft copper stranded wire to be cold-pressed with a cold-pressed tube at the upper end of a convex terminal, and the other end of the soft copper stranded wire is cold-pressed with a cold-pressed tube at one end of a tubular terminal piece; the lower end of the convex terminal is a disc connected with a screw to the concave disc of the plug-in head, and the other end of the tubular terminal piece has a hole to be connected with the holed terminal piece of the oil-type sleeve terminal with a bolt. The plug-in head is used for the connection structure between the sleeve terminal and the European plug-in head between the oil-type sleeve terminal and the European plug-in head.

It uses soft copper stranded wire and a cold-pressed tube on the upper end of a convex terminal head to be cold-pressed into one piece, and the other end of the soft copper stranded wire is cold-pressed into one piece with a cold-pressed tube at one end of a tubular terminal piece; the lower end of the convex terminal head is a disc connected to the concave disc of the European plug-in head with screws; the other end of the tubular terminal piece has a hole, which is connected to the holed terminal piece of the oil-type casing terminal with bolts.

The cable plug-in head has good insulation performance, corona resistance and electric tracking resistance, which can enhance the adaptability of cable accessories to electrical system fluctuations; when an extreme accident occurs to the cable accessories, it can minimize the consequences of the accident and prevent the spread of the accident to a certain extent.

There are two main types of European plugs, the touchable type with electricity and the non-touchable type with electricity; the touchable type means that the coating layer is a three-layer structure, the inner layer is a shielding layer made of semiconductor material, the middle layer is a main insulating layer of silicone rubber or EPDM rubber, and the outer layer is also a shielding layer made of semi-conductive material; the non-touchable layer with electricity has only two layers, without an outer shielding layer, and is not allowed to be touched when it is electrified.

Therefore, the European plug has the following characteristics: 1. Two-layer insulation structure; 2. The joint surface between the components adopts a small taper or a small interference fit to play a sealing role; 3. The new silicone rubber material replaces EPDM rubber, which is a flammable material and is prone to creepage or arc burning. In addition, its material is hard, and its moisture-proof, waterproof and anti-aging properties are poor, which does not meet the requirements of long-term operation and maintenance-free.