An electrical control cabinet is a device used for centralized control, distribution, and protection of electrical energy. It assembles switchgear, measuring instruments, protective appliances, and auxiliary equipment in a closed or semi closed metal cabinet or screen to meet the normal operation requirements of the power system. The design of the electrical control cabinet aims to facilitate maintenance, protect the safety of operators and surrounding equipment. During normal operation, the electrical control cabinet can connect or disconnect circuits through manual or automatic switches; In case of malfunction or abnormal operation, protective appliances can be used to cut off the circuit or issue an alarm. In addition, the electrical control cabinet is equipped with measuring instruments that can display various parameters during operation and allow adjustments to certain electrical parameters to indicate or signal deviations from normal working conditions.
Application of Electric Control Cabinet
Electric control cabinets are widely used in various industrial automation control scenarios, including but not limited to chemical, power systems, metallurgical systems, industrial, nuclear power, fire protection monitoring, transportation and other industries. They play important roles in these industries, such as controlling motor start, stop, speed regulation, as well as monitoring and protecting electrical equipment.
Design points of electrical control cabinet
When designing an electrical control cabinet, the following key points should be noted:
The metal casing of the electrical control cabinet should be connected to the ground wire to provide good grounding protection.
The power supply should be introduced from the upper part of the cabinet, and the load should be led out from the lower part, in order to facilitate power outage and maintenance.
The working voltage of the control circuit should choose a lower protective voltage to reduce the risk of leakage and electric shock.
The wiring between the control cabinet and electronic equipment should use cables with shielding layers to reduce interference.
If the control cabinet contains devices such as frequency converters and soft starters, heat dissipation should be considered to avoid reducing installation space.
The indicator lights, buttons, and other devices on the control cabinet panel should be clearly labeled for easy operation and maintenance.
The schematic diagram and manual of the control cabinet should be pasted in an easily accessible location for maintenance and troubleshooting.
The cables inside the control cabinet should be laid separately, and high and low voltage cables should be isolated to simplify maintenance work and improve safety.
The wires inside the control cabinet should be equipped with corresponding digital sleeves and clearly marked.
The design and assembly of the electrical control cabinet should be kept simple and clear, with neat and orderly wiring.
