The terminal bar is a common basic accessory product in the automation industry, which mainly completes the effective transmission of the intermediate medium such as signal and current. The safe protection device and light operation are the two core values of the terminal facing the connection market.

In the electric power automatic connection system, the appearance of terminal is convenient for daily operation and maintenance. With simple structure and rich types, it can provide thousands of solutions for industry partners. When the terminal in the connection due to burn out short circuit, the application advantage of the terminal is obvious, after the power, it can immediately take out the burned out terminal replacement of the same type of new products, the whole maintenance time is greatly shortened. As the terminal itself, it mainly includes the following aspects of the connection technology:

1. Screw connection

Screw connection is the connection method of screw type terminal. In particular, you should pay attention to the maximum and minimum cross sections of the connecting wire and the maximum tightening torque of screws of different specifications.

2, welding

The most common type of welding is soldering. The most important part of the solder connection is the continuity of the metal between the solder and the surface to be soldered. Therefore, the most important thing for the terminal, the cold pressed terminal, is the solderability. The most common coatings on the soldered ends of ring terminals are tin, silver, and gold. The reed type contact pair of common welding ends has welding plate type, punching eye welding plate type and notch welding plate type: pinhole type contact pair of common welding ends has drilling arc notch type.

3, crimping

Clamping is a technique used to compress and displace metal within specified limits and to connect wires to contact pairs. Good crimping connection can produce metal fusion flow, so that the wire and contact on the material symmetrical deformation. This kind of connection is similar to the cold welding connection, can obtain the better mechanical strength and the electrical continuity, it can withstand the harsher environmental conditions. At present, it is generally believed that the correct crimping connection is better than tin welding, especially in high current situations must be used crimping. Special crimping pliers or automatic or semi-automatic crimping machine shall be used when crimping. Should be based on the cold pressed terminal, cold pressed terminal wire section, the correct selection of contact to the wire tube. Note that the crimping connection is a permanent connection and can only be used once.

4, wire wrap

Winding is to wind the wire directly on the winding column of the contact parts with edges and corners. During the winding, the wire is wound under the condition that the tension is controlled, pressed into and fixed at the edges and corners of the winding column of the contact parts to form air-tight contact. There are several requirements for the wound wire: the nominal diameter of the wire should be within the range of 0.25mm~1.0mm; Copyright © 2012 when the diameter of conductor is not greater than 0.5mm, the elongation of conductor material is not less than 15%. Copyright © 2012 when the diameter of conductor is greater than 0.5mm. All rights reserved. The elongation of conductor material is not less than 20%. The winding tools include a winding gun and a stationary winding machine.

5. Pierce in succession

Piped connection, also known as insulation displacement connection, is a new terminal technology invented by the United States in the 1960s, with high reliability, low cost, easy to use and other characteristics, has been widely used in a variety of printed board terminals, cold pressed terminals, cold pressed terminals, ring terminals. It is suitable for the connection of ribbon cable. When connecting, it is not necessary to strip the insulation layer of the cable. The "U" shape of the terminal touches the tip of the reed and penetrates into the insulation layer, so that the conductor of the cable slides into the groove that contacts the reed and is clamped to control the engineering network. All rights reserved. It requires only simple tools, but must choose the cable of the specified wire gauge.