Calculating kVA to to start a 3 Phase Electric Motor on Line (DOL) Start

Generator Size to Start Motors

Instructions: Fill in the HP of the motor(s) in their starting sequence, select the start method (DOL – Direct On Line or Star Delta) and press Calculate. The required generator size will then be displayed at the bottom.

* Please NOTE the above calculations are an estimate only because other factors such as site conditions, motor efficiencies and iron losses are not taken into consideration.