What are the common causes of copper tube terminal failure

Once a fire occurs in the copper tube terminal, the fire will be fierce and extend quickly, and a lot of harmful gases will be emitted during incineration, which constitutes a difficult remedy. After the copper tube terminal is burned out, it takes a long time to correct and the loss is severe. Therefore, we must pay great attention to preventing the copper tube terminal from fire. So what are the factors that cause the trouble of the high-voltage copper tube terminal? Let's briefly analyze it below.

1. The site conditions are relatively poor. The environment and technical requirements for the copper tube terminals and joints are very high when the factory is manufactured, and the temperature, humidity, and dust on the construction site are not easy to control.
2. The installation is not strictly in accordance with the technical construction or technical rules without taking into account the doubts that may arise. The completion inspection selects the DC withstand voltage experiment to form a reverse electric field in the joint, which causes the insulation to be damaged.
3. Caused by improper sealing treatment. The center joint must be a sealed structure with a metal copper shell and a PE or PVC insulation anticorrosive layer to ensure the tightness of the lead seal during on-site construction, which effectively ensures the sealing and waterproof function of the joint.
4. During the construction of the copper tube terminal, it is inevitable that there will be slight slip marks on the insulation surface. Semi-conductive particles and sand on the emery cloth may also be embedded in the insulation. During the construction of other joints, the insulation is exposed to the air and the insulation It will also inhale water, which leaves a danger to long-term safe operation.
5. The copper tube terminal material itself and the inevitable defects in the process of manufacturing, laying, and terminal manufacturing of the copper tube terminal are affected by the electric heating, chemistry, environment and other factors in operation, and the insulation of the copper tube terminal will not occur. The same degree of aging, and this aging will eventually cause the occurrence of faults in the copper tube terminal.