The water-cooled reactor is suitable for the occasions with high heat dissipation requirements. Using water's excellent heat dissipation characteristics, the product's power density can be effectively improved. There are two ways to achieve this. One is to set a water-cooled plate between the winding and the core so as to indirectly absorb the heat of the winding and the core. Another is to add the water cooling unit to the fanner’s outlet, and then use the cooled air to bring down the temperature of the product. Water cooled reactors are mainly used in wind power projects (green energy), and is one of the most important components of wind power project equipment. It can also be used in other environments of poor heat dissipation and ventilation.