Baldors Digital Soft-Starter’s energy optimizing system works by reducing the current and iron losses of a motor not running at full load. The energy savings will depend on a number of factors including the efficiency of the motor and the load.
The optimizing feature is a purely electrical function which has the effect of ensuring that motor delivers the torque demanded at all times, but only drawing the precise amount of magnetizing current necessary to support the motor output. Without this feature, the motor would draw a constant magnetizing current based on the supply voltage regardless of load.
The reduction of current proportional to load results in a lower I2R losses giving rise to an improvement in motor efficiency that is both continuous and cumulative.
These soft starters will also save money by reducing the electrical and mechanical strain placed on applications – resulting in less ‘down time’ and maintenance cost on electrical circuits, gearboxes, belts and associated mechanical components.