Like all distribution boxes, they are a kind of power transmission equipment, which is responsible for the power transportation and distribution in the whole power system to ensure the normal operation of the whole power system. Kunming power distribution box Kunming power distribution cabinet is generally used for large-scale power supply system. In order to better carry out power distribution control, it is divided into three kinds of power distribution equipment: primary, secondary and low-level. Operation mode of advanced distribution cabinet: it is preferred because the primary distribution equipment is used as the power distribution center in the power supply system and is responsible for distributing electric energy to the secondary distribution equipment. Secondly, the secondary is responsible for the distribution of electric energy to the nearby load. Since the low-level distribution cabinets are distribution boxes used for lighting and power operation, their layout is scattered and their internal capacity is small. They are responsible for controlling the low-level load distribution. The construction power distribution system shall be equipped with general distribution box, distribution box and switch box, which shall be set as a hierarchical setting in the order of general separation, and form a three-level distribution mode.

The installation position of each distribution box and switch box of the distribution system for distribution box construction shall be reasonable. The general distribution box shall be as close to the external power supply of the transformer as possible to facilitate the introduction of power supply. The distribution box shall be installed in the center of electric equipment or relatively concentrated load as far as possible to ensure that the three-phase load remains flat. The installation position of the switch box shall be set according to the site conditions and construction conditions. To ensure the three-phase load balance of the temporary power distribution system, the power and lighting power at the construction site shall form two power circuits, and the power distribution box and lighting distribution box shall be set separately. All electrical equipment on the construction site must have their own special switch boxes. The box body and internal setting of stainless steel distribution boxes at all levels of vacuum contactors must comply with safety regulations, the purpose of switching appliances shall be indicated, and the box body shall be uniformly numbered. When the stainless steel distribution box is out of service, the power supply shall be cut off and the box door shall be locked. The fixed distribution box shall be provided with a fence and rain and smash proof measures. Stainless steel distribution boxes are generally used for household use, while distribution cabinets are mostly used for centralized power supply, generally industrial power and building power. Stainless steel distribution boxes and distribution cabinets are complete sets of equipment, stainless steel distribution boxes are complete sets of low-voltage equipment, and distribution cabinets are high-voltage and low-voltage.