The benefits provided by DC fans for electric cabinets are as follows:

1. Reduce the temperature of the working environment of the equipment: DC fans can convert hot air into mechanical through DC voltage and electromagnetic induction to convert electrical energy, driving the air blades to quickly transport the outdoor, reduce air resistance, reduce the temperature around the equipment, thereby extending the service life of the equipment.

2. Large and stable air volume: DC fan air volume provides variable and unsteady air volume with less electromagnetic interference, but the air volume is uneven and requires a transformer or rectifier. In the case of limited space and high heat generation, DC fans can be chosen to obtain a larger air volume.

3. Support for a variety of functions: DC fans support more comprehensive functions that AC fans do not support. For example, some devices utilize the air volume and air pressure of the cooling fan to complete the function of the device.

4. Energy saving and environmental protection: DC fan with high power factor, low loss, high efficiency, good speed performance, simple control, these advantages make it widely used in the electronics industry and mechanical equipment, is a kind of energy-saving fan.

5. Long service life: The all-metal of DC fan is heat-resistant, dustproof and moisture-proof, which can prolong the service life of the fan when it operates in harsh environments such as high temperature, heavy dust and humid air.

Overall, DC fans have significant advantages in reducing the temperature of the working environment of the equipment, providing large and stable airflow, supporting a variety of functions, energy saving and environmental protection and long service life, so they are widely used in the electronics industry and mechanical equipment.