The contact force of the cold-pressed terminal is one of the basic information elements. If there is not enough contact social pressure during use, it is useless to use the best conductive material during management operations. The main reason is that if the contact force is used. If it is too low, there will be displacement between the wire and the conductive sheet, which can affect the oxidative environment pollution, increase the contact resistance and lead to overheating of the economy.

Cold-pressed terminals require only 0.8Nm of torque on the screw to generate a real contact force of up to 750N, regardless of the conductor cross-section. Therefore, using the connection terminal wire frame has a connection that is not affected by any environment, has a large contact area and a large contact force. The voltage drop at the small voltage drop contact point is also one of the criteria for determining the quality of the junction box.
In operation, a small torque can be applied to the cold junction, and its voltage drop value is still greater than the required limit value, while the applied torque varies widely, and the voltage drop is almost unchanged. Therefore, although different operators use different torque levels, it does not affect the quality of the connection.

In this regard, the cold end adopts a crimping frame, which also has great reliability. During the process of tightening the screw, the threaded tongue on the crimping frame bounces up, producing a reaction force on the screw. Because the change in wire diameter caused by temperature is offset by the elasticity of the frame itself, there is no need to tighten the screws.

The cold-pressed terminal adopts the maintenance-free property of the crimping frame and the air-tightness of the cold-pressed terminal. Various social environmental factors, such as temperature and relative air humidity, have been acting on the terminal for many years, so the terminal must be able to develop and withstand adverse economic conditions. The test of environmental risk factors, the experimental research made according to relevant regulations and the actual life experience of the company have proved that the crimping frame can maintain its airtight performance even when a flexible wire without a crimping end is connected.