Pump performance curve
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Below is the performance curve of a centrifugal water pump, but why does its power keep decreasing as the flow rate increases?
A similar curve for ITT is its equal power curve
This is called the equal power curve. This pump has a wide range of high-efficiency operating points, and its hydraulic model is excellent\ud83d\udc4d
On the equal power curve, as can be seen from the graph, for example, on the curve corresponding to 132 KW, an increase in flow rate only results in a decrease in pressure. Why does the motor experience overcurrent as soon as the flow rate increases slightly during actual operation?
Why is it easy to have overcurrent? It’s also overheating!