Three phase asynchronous motors are used in industry due to its simple construction and low maintenance operation. However, torque and motor current during the starting of a three-phase asynchronous squirrel-cage motor is usually not very favorable. Therefore electronic starters, like EMS, are used to reduce the excessively high starting currents. By limiting the accelerating torque, mechanical stress on the material to be conveyed or processed, and consequently on all mechanical parts of drive and driven machine, is reduced. By starting motor at low voltage and avoiding large current peaks during starting with current limit feature, the cost of electricity may also be reduced.+ Read More