Wire and cable in normal power operation, the cable itself will produce a certain amount of heat, which is a normal phenomenon. However, due to some other special reasons, such as cable quality is not up to standard, improper cable selection, installation and laying of non-standard cable overheating phenomenon, there are great hidden dangers.

Here is some knowledge about cable overheating for everyone.

01 Cable overheating causes

1 The resistance of the cable conductor does not meet the standard requirements, causing the cable to generate heat during operation.

2 Improper cable selection, resulting in the use of cable conductor cross-section is too small, the operation of overload phenomenon, after a long time of use, the cable heating and heat dissipation imbalance caused by heating phenomenon.

3 The cable installation arrangement is too dense, the ventilation and heat dissipation effect is not good, or the cable is too close to other heat sources, affecting the normal heat dissipation of the cable, causing the cable to generate heat during operation.

4 The joint manufacturing technology is not good, the crimping is not tight, causing the contact resistance at the joint to be too large, and it will also cause the cable to generate heat.

5 The insulation performance of the cable is not good, resulting in small insulation resistance, and heat will be generated during operation.

02 Wire and cable overheating hazards

After the cable overheating phenomenon, if the cause is not found and the fault is removed in time, the insulation thermal aging phenomenon will occur after the cable is powered on continuously, resulting in the cable short-circuit tripping phenomenon, which may seriously cause fire.

03 Preventive Measures for cable overheating

1. Select cables according to all load sizes.

2. Choose a cable manufacturer with a good brand and high credibility to ensure that the cable quality is qualified.

3. When installing and laying cables, ensure that the ventilation and heat dissipation effect of the cables is good.

4. The cable joint must be compacted tightly to reduce the contact resistance at the wire and cable joint and generate less heat.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098