When the pump is running with frequency conversion, the instantaneous power is greater than the power frequency operation, and the actual flow and lift are less than the power frequency. When running, the efficiency is very low. Why?
Variable frequency pump running normally, its flow and lift is lower than the power frequency operation, that is for sure. The so-called power frequency operation is full speed operation, of course, the head and flow is the highest.Frequency conversion is mainly to save power and reduce the running loss of equipment. The so-called efficiency, but also by the correct selection, the actual pump head and flow as close as possible, the actual working conditions for the best.
There is a running curve for the fan and water pump.Enough is enough
Pump power frequency operation, speed is rated. Frequency conversion actually adjusts the speed of the pump (the speed becomes smaller), and the flow of the pump moves parallel and downward. As for efficiency, it depends on the operating conditions of the pump. Does it deviate or run to the minimum efficiency position of the flow curve of the pump?.
