2. The high-voltage and low-voltage distribution cabinets are power distribution equipment connected by high-voltage distribution cabinets, low-voltage switch cabinets and connecting cables. Generally, high-voltage distribution cabinets are used in power supply bureaus and substations, and then step-down through transformers to low-voltage switchgear, and then to various distribution panels, control boxes and switch boxes. It is nothing more than assembling some protective devices such as switches, circuit breakers, fuses, buttons, indicator lights, meters and wires into a power distribution equipment.