Equipment & Systems
Motor Systems
Check motor current, output, voltage drop, overload settings, and drive compatibility.
Multiple Motor Feeder CalculatorEstimate feeder current from multiple motor currents and largest-motor adder.Motor Speed and Slip CalculatorCalculate synchronous speed and induction motor slip.Motor Starting Current CalculatorEstimate locked-rotor current from full-load current and multiplier.VFD Motor Speed CalculatorEstimate motor speed from drive frequency and slip.Motor Full-Load Current and Circuit Protection ReferenceLook up motor table FLC, branch-conductor ampacity, and general protection limits.Motor Overload Protection Setting ReferenceCalculate normal and conditional overload trip-current limits.Motor Energy Cost CalculatorEstimate electrical input power, annual energy, and operating cost from shaft load and efficiency.Motor Efficiency Upgrade Payback CalculatorCompare energy costs at equal shaft duty and estimate simple payback for a replacement motor.Pump and Fan Speed Energy CalculatorEstimate relative flow, head, and shaft power at a changed speed using ideal affinity laws.Motor Voltage Drop EstimatorEstimate running and starting voltage drop from motor and conductor data.Three-Phase Motor Power and Torque CalculatorEstimate motor input power, shaft horsepower, and torque.VFD and Motor Compatibility WorksheetScreen rated current and track manufacturer review items.