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Cable Splice Fault Repair
2013-04-14
Before cutting the joint, check whether there is water and moisture in the joint. If there is, the joint cannot be cut with a blowtorch, because the heating of the blowtorch causes moisture to rush to the inside of the cable from both sides of the joint. It is better to cut the sleeve with a hammer and a cutter. If there is no moisture and moisture, the lead sleeve can be ironed with a blowtorch to remove the lead sleeve dirt, scrape off the rust spots, scum and remove the solder slag, for reuse.
Moisture can be removed by baking. It is baked with a blowtorch or charcoal fire to drive away moisture. This method can only be used with a small amount of moisture. When the paper insulated core wire is seriously damp, the wax pouring method can be used to remove moisture with hot wax. It is made by mixing 60% white wax and 40% neutral vaseline and heating it to 130~140 ℃. The wax pouring is controlled at 120~130 ℃. The wax pouring starts from 10~15 ㎝ of the cable lead sleeve cut on both sides, and gradually moves to the cut. After the wax material condenses at the cut, it is poured into the center of the joint until there is no bubble or dipping sound on the core wire.
If the above two treatments still have residual moisture in the cable joint, it cannot be completely removed at that time. Silicone drying method is used for further moisture removal, I .e. appropriate blue silicone desiccant is placed in the joint, and then the lead sleeve is sealed and welded. The residual moisture of the core wire will be slowly absorbed by the silicone, and the insulation resistance of the core wire will gradually increase.
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