Cold shrink cable accessories metal shielding grounding caused by imperfect, in general there are two XLPE cable grounding, and grounding resistance should be less than the specified value, so as to effectively protect the cable, if the grounding resistance value exceed the standard, when the cable and connector received voltage, will produce better induction voltage thus, part of the insulation breakdown causes aging.

Because the installation quality of the cold shrink cable accessories is not high, it mainly refers to the cable laying and installing process, such as sand or soft soil at the bottom of the cable trench. It causes the cable accessories to be squeezed by stones or heavy objects in the cable trench, resulting in mechanical injuries. And this kind of mechanical injury is a very obvious fault point of the cable accessories.