51.6 System characteristicsFigure 1-4: Duty cycleFigure 1-5: Output characteristic curves1) Duty cycle2) Output characteristicsExternal characteristic of maximum outputExternal characteristic of minimum outputRelationship with ratedloadRated duty cycle refers to the percentage of the normal work time of the machine under ratedmaximum current holding in the period when taking 10 minutes as a period. The rated duty cycleof this machine is 40 -60%. Using the cutting machine continuously overrunning the rated loadmay lead to overheating of the machine, and frequently using the machine overrunning the ratedload may accelerate the aging of the machine or even burn the machine.%U2(V)U02(A)I0CUT40(L131)CUT100(L201)CUT60(L204)/CUT60(L211)CUT80(L205)Q(%)100(A)I806040201501209060300① ④② ③①②③④