crossthelinestartingisthesuddenloadingseenbythedrivenequipment.Thisshockloadingduetotransienttorqueswhichcanexceedofthelockedrotortorquecanincreasethewearontheequipment,orevencauseacatastrophicfailureiftheloadcannothandlethetorquesgeneratedbythemotorduringstaring.A.CapacitorsandStartingInductionmotorstypicallyhaveverylowpowerfactorduringstartingandasaresulthaveverylargereactivepowerdraw.SeeFig..Thiseffectonthesystemcanbereducedbyaddingcapacitorstothemotorduringstarting.Thelargereactivecurrentsrequiredbythemotorlagtheappliedvoltagebyelectricaldegrees.Thisreactivepowerdoesn'tcreateanymeasurableoutput,butisrathertheenergyrequiredforthemotortofunction.TheproductoftheappliedsystemvoltageandthisreactivepowercomponentcanbemeasuredinVARS(volt-amperereactive).Thecapacitorsacttosupplyacurrentthatleadstheappliedvoltagebyele为该曲线各点极限。
此外,对