Terminal insulation material is made with high quality silicon rubber material and, it has good hydrophobic performance, when the droplets after the above, ready to roll down, do not form a conductive film of water and has a hydrophobic self-healing properties. In addition, it has a strong insulation, resistance, corrosion resistance and UV resistance, the biggest advantage is to ensure long-term use of stable performance. Long life, the same life with the cable body.

Accessory cable terminal head, has a unique material formula and manufacturing process, which closely attached cable main insulation,the body of the cable provides a constant radial pressure, small amount of partial discharge, high starting voltage, impulse insulation level is higher than the level of existing standards, and the cable body with "breath".

The national standard GB50168-92 "cable line construction and acceptance code" section 6.1.3 provides: "the manufacture of plastic insulated power cable terminals and connectors, should prevent dust, debris fall into the insulation. Is strictly prohibited in the fog or rain". If we do not pay attention to the influence of environmental factors in the production, will cable head insulation due to dust, impurities, such as the formation of air gap and under strong electric field occurred partial discharge (PD), and then to insulation breakdown, resulting in the breakdown of cable head fault. If made in a humid environment, cable is easy to be affected with damp and makes the overall reduction in the level of insulation. In addition, it is also easy to moisture from entering the gap formation and the emergence of partial discharge.