If one has a performance curve for the pump, and you know where on that curve the pump normally operates, then one can calculate the BHP to determine if the hydraulic horsepower is less than or equal to the motor horsepower.
In English units: BHP = [head(FT) x flow(GPM) x SG] / [3960 x eff.] Convert the resulting BHP to kw units and if it is less than 11 kw, then there should be no change in the pumps operating point.