(1) The water supply pressure of the variable frequency speed control water supply can be adjusted to meet the needs of various water supply pressures conveniently. In the design phase, the accuracy of the calculation of the water supply pressure can be reduced, because the water supply pressure can be easily changed at any time. However, when selecting the pump, it should be noted that the lift of the pump should be larger, because the maximum pressure of the frequency control is limited by the pump. The minimum operating pressure should not be too small, because the pump is not allowed to work for a long time under low lift and large flow. Otherwise, the capacity of the inverter and pump motor should be increased to prevent overload.
(2) At present, the inverter technology is very mature. There are many inverters of domestic and foreign brands in the market, which provides sufficient technical and material basis for variable frequency speed regulation water supply. The frequency converter has been widely used in various sectors of the national economy. Any brand of inverter can be combined with the variable frequency water supply controller to realize multi-pump parallel constant pressure water supply. Because of the wide application of building water supply, some inverter design manufacturers directly use the variable frequency water supply controller in the water supply special frequency converter; this kind of frequency converter has the advantages of good reliability and convenient use.
(3) Variable frequency speed regulation Constant pressure water supply has excellent energy saving effect.
