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The most easily damaged part of the general cold shrink cable accessories is the intermediate connection head of the cable and the terminal head and its vicinity, especially the intermediate connection head. The manufacturing requirements are even higher, so the possibility of accidents is also relatively large. If the installation quality of the cold shrink cable accessories is not high, the cable will be damaged by external machinery or overrun for a long time, which will also cause the increase of cable failure rate. So why do these failures happen?
The production quality of the connectors and terminals of the intermediate heat shrinkable cable is not high and the production process if the semi conductive layer of creepage distance of treatment is not enough, cable accessories will cause the internal contraction of impurities, sweat and air etc. for this reason, the cable will run after the impurity after strong electric field the occurrence of free discharge phenomenon. In addition, cable accessories production process, if the conductor crimp quality is not good, it will lead to joint high contact resistance and heat, or because of excessive shrinkage caused by insulation aging phenomenon, so that the aging and breakdown of insulation layer, also led to a cable grounding short circuit short goods will also hurt the other. Near the cable.