Product Introduction:

Fixed compartmentalized switchgear is suitable for three-phase AC 50/60 Hz, rated voltage 400 V, rated current up to 4000 A, three-phase four-wire and three-phase five-wire power systems, for receiving and distributing electric power. It is widely used in power distribution centers (PC) and motor control centers (MCC) of power plants, substations, industrial and mining enterprises, and high-rise buildings.

Product Features:

The main frame of the assembly is made of 8MF/C-section steel and is available in assembled and partially welded structural forms. Mounting module holes with E=20 mm are provided on the main frame. All functional compartments are strictly separated, mainly including the functional unit compartment, horizontal busbar compartment, vertical busbar compartment and cable compartment, with each unit performing its function independently.

In addition, the GDF design fully considers heat dissipation during cabinet operation. Ventilation openings are arranged at both the upper and lower ends of the cabinet. When internal components generate heat, hot air rises and is discharged through the upper slots, while cool air continuously enters through the lower slots, forming a natural ventilation path from bottom to top inside the enclosed cabinet to achieve effective cooling.

Incoming cabinets, bus-tie cabinets and high-current feeder cabinets use withdrawable circuit breakers and bolted copper busbar connections. Considering the diverse incoming-line arrangements required by users, such as top incoming, bottom incoming and side incoming, and the presence of bus-tie cabinets, a 300 mm wide busbar transfer cabinet is added. It can be combined with the main cabinet on either the left or right side, providing flexibility and convenience. The feeder cabinet and motor control center do not have a dedicated cable compartment; they are separated from the functional unit compartment and busbar compartment by insulated epoxy boards. Connections among the three compartments are made through multi-strand copper-core cables, adapters and copper transition busbars, improving device reliability and greatly facilitating cable installation and maintenance.

Each functional unit is arranged in an independent compartment, with devices mounted in a fixed arrangement. Plug-in miniature circuit breakers are adopted, and operating handles are added on the doors. This retains the advantages of drawer cabinets while overcoming the disadvantages caused by multiple intermediate mechanisms in drawer-type cabinets, ensuring safe use and convenient maintenance. Each cabinet can accommodate nine single-module fixed units, with each module 200 mm high. To enhance configuration flexibility, 1.5-unit, 2-unit and 3-unit size series are also available, with rated currents up to 630 A.