Yes. DRG Motor products are offered in the IE3, IE4 and IE5 high-efficiency classes and provide significant energy savings. A high-efficiency motor lowers the electricity bill by doing the same work with less electricity. Since electric motors account for a large share of industrial electricity use, motor efficiency directly shapes a plant's energy costs.

Where do the savings come from?

Part of the energy a motor draws from the grid is delivered to the shaft as mechanical power; the rest turns into heat. These losses fall into four main groups:

  • Copper losses in the stator and rotor windings
  • Iron losses (hysteresis and eddy currents) in the magnetic core
  • Mechanical losses from bearing friction and the fan
  • Additional (stray) load losses

In high-efficiency motors, quality copper, low-loss electrical steel and an optimised design reduce these losses. Lower losses also mean a cooler-running motor and therefore longer insulation and bearing life.

How to estimate the savings

An approximate annual difference can be calculated as: shaft power × annual operating hours × (1/old efficiency − 1/new efficiency) × electricity unit price. Especially on industrial motors running 24/7, even a gain of a few points in efficiency turns into significant annual savings. The cost of electricity consumed over a motor's life is often far higher than its purchase price, so choosing on initial price alone can be misleading.

Ways to increase the savings

Using a high-efficiency motor together with a frequency inverter on variable-flow pumps and fans, sizing the motor correctly and maintaining it regularly increase the gain further. High-efficiency motors pay back their initial cost quickly and deliver substantial benefits in the long term.

For a savings comparison on your existing motors, write to +90 (542) 666 11 11 (WhatsApp) or info@drgmotor.com.