The specific requirements for cooling water for different cooling locations are as follows.

(1) Induction coil, capacitor bank cooling water system

It is cooled by industrial pressure water. The cooling water pressure should be maintained at 0.15 ~ 0.20MPa , the water temperature should be maintained at the inlet water temperature of 20 ~ 35 °C, and the outlet water temperature is lower than 55 °C. Dew condensation occurs when the cooling water temperature is too low, and the cooling capacity is lost when the water temperature exceeds 55 °C. In order to save water, a circulating cooling system can be used.

(2) Cooling system of thyristor inverter

The thyristor transistor cooling water should meet the following conditions: the cooling water pressure should be stably maintained at 0.15 MPa , the water quality should be softened, the hardness should be less than P8 , the resistance should be above 20k Ω, and the insoluble matter in water should be less than 0.03mg/L .

(3) Other parts of the cooling water system

The medium frequency generator, the triple frequency inverter and its associated capacitor bank cooling water system all use industrial pressure water, and the specific requirements are the same as the induction coil.

In order to ensure the safe use of the equipment, the cooling water system should implement centralized water supply and return water. The waterway should be equipped with a water pressure alarm device and a water stop warning device to prevent equipment accidents caused by insufficient water pressure or water cut.

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