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Possible faults of Cold Shrinkable Cable Accessories

2022-11-23
Generally, the most prone to failure of Cold Shrinkable Cable Accessories is in and around the middle joint and termination of the cable, especially the middle joint production requirements are higher, so the possibility of hidden dangers is relatively greater. In addition, if the installation quality of the Cold Shrinkable Cable Accessories is not high, the cable is damaged by external mechanical damage or long-term overload operation will also cause cable failure.

1. The fault is caused by the low quality of the middle connector and the terminal head of the Cold Shrinkable Cable Accessories. If the creepage distance of the semi-conductive layer is not enough in the production engineering, the shrinkage of the Cold Shrinkable Cable Accessories will cause internal impurities, sweat and air, etc. After the operation of the cable, the impurities will be free through the action of a strong electric field, resulting in discharge phenomenon.

In addition, in the process of making Cold Shrinkable Cable Accessories, if the wire crimping quality is not good, it will lead to excessive joint contact resistance and heat, or due to excessive shrinkage and other phenomena of insulation aging, so that the insulation aging and breakdown, but also lead to cable grounding short circuit or interphase short circuit, but also hurt other nearby cables.

2. Cold Shrinkable Cable Accessories metal shielding grounding is not perfect caused by the fault, there are two points of grounding on the general cross-linked cable, and the grounding resistance value should be less than the specified value, so as to effectively protect the cable, if the grounding resistance value exceeds a lot, when the cable and the joint received voltage, will induce a better voltage, resulting in the aging breakdown of the insulation part.

3. The fault caused by the low installation quality of Cold Shrinkable Cable Accessories mainly refers to the laying and installation of cables, the bottom of the cable trench should be laid with sand or soft soil, such as rocks or heavy objects at the bottom of the cable trench extrusion will cause mechanical trauma.
Cold Shrinkable Termination Kit

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Support Strip for Cold Shrinkable Cable Accessories
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