Based on voltage levels, power distribution equipment can be categorized into high-voltage, medium-voltage, and low-voltage distribution equipment. High-voltage distribution equipment is typically deployed in the backbone lines of power systems and for large-scale industrial consumers, where it is responsible for the distribution and control of high-voltage electrical energy. Medium-voltage distribution equipment is predominantly utilized in urban distribution networks, industrial parks, and large building complexes to transform and distribute electrical energy from high-voltage lines down to low-voltage systems. Low-voltage distribution equipment is primarily used in residential settings and small commercial premises to ensure the safe and stable operation of electrical appliances and devices.
Based on structural form and intended application, power distribution equipment can be further classified into distribution cabinets, switchgear, compact substations, and distribution boxes. Distribution cabinets and switchgear are widely used in industrial facilities and large commercial buildings, offering centralized control and protection capabilities. Compact substations are suitable for areas with concentrated medium-to-small loads; they integrate power transformation, distribution, and control functions into a single unit, facilitating ease of installation and maintenance. Distribution boxes are typically found in residential homes and smaller buildings, providing low-voltage power distribution and circuit protection. Furthermore, based on control methods and the degree of intelligence, power distribution equipment can be broadly divided into traditional and intelligent types. Traditional equipment relies primarily on mechanical or electromagnetic components for switching control and protection, whereas intelligent distribution equipment is equipped with digital monitoring, remote control, and automated protection systems, enabling capabilities such as load monitoring, fault pre-warning, and data management to enhance the safety and operational efficiency of the power system.
