How can frequency conversion of the pump ensure both constant current and constant pressure? ? ? Need to save energy too? ?
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How can frequency conversion of the pump ensure both constant current and constant pressure? ? ? Energy savings are also necessary, especially in situations where multiple pumps are operating at high flow rates, yet it is required that the head pressure remain essentially constant. How should such systems be configured? ? ?
This is not possible; several more pumps can be placed on site. Determine which pump to operate based on different conditions
Constant voltage or constant current – it should be one of the two only, right?
With both constant current and constant voltage, the power must remain constant – so how can the load be reduced?
Variable frequency + control valve can achieve this