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SP55. How to read the curve chartsNumber of stages.First figure: number of stages;second figure: number ofreduced-diameter impellers.H[m]400350300250H[ft]1300120011001000900800-48DS-39DS-315S60 Hz, SF 1.15ISO 9906 Annex APump type, number of polesand frequency.QH curve for the individualpump. The bold curvesindicate the recommendedperformance range for bestefficiency.How to read the curve charts200700600-26-22150500-18The efficiency curve showsthe efficiency of the pump.The efficiency curve is anaverage curve of all the pumptypes shown in the chart.The efficiency of pumps withreduced-diameter impellers isapprox. 2 % lower than theefficiency curve shown in thechart.100500P2[kW]0.060.040.020.004003002001000P2[hp]0.080.060.040.020.00-13-90 1 2 3 4 5 6 7Q [US GPM]0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Q [m³/h]Eff[%]Eff40P20 1 2 3 4 5 Q [US GPM]3020100The power curves indicatepump input power per stage.Curves are shown forcomplete (1/1) and forreduced-diameter (2/3)impellers.TM05 0229 1011219
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