An efficient electric motor produces the same mechanical work while drawing less electricity; the difference comes from reducing the losses that turn into heat. DRG Motor bases its efficient-motor production on the IEC 60034-30-1 standard and offers a range spanning IE3 Premium to IE5 Ultra Premium. In continuously running plants, efficiency is the single most decisive item in operating cost.

What Efficiency Means

Motor efficiency is the ratio of mechanical power taken from the shaft to electrical power drawn from the supply. The remainder turns into heat as stator-rotor copper loss, iron loss and friction. A higher efficiency class reduces these losses, lowering both the electricity bill and the motor's running temperature.

The Construction of DRG Efficient Motors

DRG motors raise efficiency through low-loss silicon steel laminations, an optimised winding and a precise air gap. The cast iron housing sheds the heat of the efficient, cooler-running winding through external ribs, extending insulation and bearing life. Motors are built for 400 V / 50 Hz with IP55 protection and Class F insulation.

The Effect of Efficiency on Operation

Most of a motor's lifetime cost is not the purchase price but the electricity it consumes. On a motor that runs all year, the next efficiency class up recovers the initial price difference as operating hours accumulate; the longer the running time, the clearer the gap.

Choosing the Right Efficient Motor

Efficiency class should be weighed together with annual running hours and load profile. DRG Motor supplies IE3, IE4 and IE5 efficient motors from 0.55 to 355 kW from its İzmir plant; we can determine the class, pole count and mounting type that suit your application together.