Our distribution board has reached a considerable level, and we have a very significant advantage in price and delivery time; At the same time, our products are more comprehensive. Combined with the actual use needs of customers at home and abroad, we design more products for customers to choose and use;

The section of power system from the outlet of step-down distribution substation (high-voltage distribution substation) to the user end is called distribution system. It is a power network system composed of a variety of distribution equipment (or components) and distribution facilities to transform voltage and directly distribute electric energy to end users. It can be divided into three parts: high voltage distribution system, medium voltage distribution system and low voltage distribution system. The voltage between the two poles of the battery is maintained at a constant value for charging. It is a widely used charging method. The floating charge and trickle charge of batteries for telecommunication devices and uninterruptible power supply (UPS) are constant voltage charging. The starting battery is also charged at approximately constant voltage when the vehicle is running. The utility model has the advantage that the charging current can be automatically adjusted with the change of the state of charge of the battery

The travel switch is a limit switch that controls the energy storage position of the motor. When the energy storage of the motor is in place, cut off the power supply of the motor. If the limit is too high, the mechanism energy storage is full. The fault phenomenon is that the motor does not stop when idling and the energy storage indicator does not light up. The motor can only be stopped by turning on the control switch (HK). When the limit adjustment is too low, the motor stops in advance when the energy storage is not full. Because the energy storage of Shandong distribution box is not in place, the switch cannot be closed. The way to adjust the limit is to slowly store energy manually, find the correct position and tighten it.

If the motor winding is burned, there will be peculiar smell, smoke, fuse, etc. If there is voltage at both ends of the motor, the motor does not rotate. It may be caused by falling off or serious wear of carbon brush. The method to judge whether it is a motor fault is to measure the voltage and resistance at both ends of the motor or replace it with other good motors.