In the construction of heat shrinkable cable accessories, a series of adverse consequences will be caused due to a little carelessness and improper methods.

What we need to pay attention to is the loose connection of heat shrinkable cable accessory’s crimping pipes and large contact resistance of crimping joints may cause overheating during operation.

The three-phase compression joints’ asymmetric position of the heat shrinkable cable accessory will generate an asymmetric electric field, which can accelerate the aging of the insulation.

It should be noted that the residual air bubbles generated by the production of the insulating filler and the heat shrinkable tubes will cause partial discharge under the action of the electric field and eventually lead to insulation breakdown.

The most important small detail is that in the manufacturing process of heat shrinkable cable accessories, if the metal burrs of crimping pipes after crimping are not cleaned up completely, the point discharge will be generated during the operation, and finally the insulation penetration discharge will be caused.

Therefore, we need to pay attention to small details and techniques during construction to avoid the above adverse consequences.