1. Cable leakage: because the cable has to expand and contract back and forth with the door telescopic bracket, rigid protection cannot be carried out, and frequent actions will increase the degree of wear. The mechanical support has a certain risk of mechanical damage to the cable. Once the insulating protective layer is cut, it will cause leakage. Furthermore, if the cable is placed outdoors for a long time, high temperature, rain, fog, etc. will accelerate the aging of the cable sheath

 

   2. Motor leakage: Affected by the flatness of the ground, the motor may run under bumps and vibrations for a long time, increasing the risk of damage to the motor components. In addition, the insulation resistance of the windings is reduced by damp, long-term overload operation of the motor, harmful gas erosion, metal foreign objects intruding into the resistor, damage to the wire insulation and burning will cause leakage.