1. The joints are susceptible to moisture. The insulating layer of the cable is composed of magnesium oxide. In the cable head construction, when the conductor is exposed after the cable end is peeled, it is easy to chemically react with the moisture in the air and generates magnesium hydroxide. The insulation resistance of the cable is generally above 100MΩ, but if the cable head is produced within 1H, the insulation resistance can drop below 10mΩ, or even fall to less than 0.5mΩ. In this way, the use of cables in engineering will inevitably bring hidden electrical hazards.

2. The cable circuit should indicate the number. At the end point of each loop, the starting point, the middle joint, etc., the loop number is marked. So as not to occur with excessive phase circuits to form errors.

3. Mining insulation cables are mostly consisting of single -core cables in the project, so it is easy to occur in the cable fixed gold gear. If the vortex is too large, it will not only form a lot of losses, but also accelerate the aging of the fixed gold gear of the cable. Therefore, in actual construction, you should try to prevent vortex or minimize the vortex. Therefore, the on -site cable fixed gold tools need to prevent vortex flow, and at the same time, a reasonable cable phase sequence is used to arrange the vortex flow.

The above is the characteristics of the mineral cables analyzed by Xiaobian and its construction precautions for everyone. I hope it will be helpful to everyone.