Customer benefits of high efficiency motors

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1 Customer benefits of high efficiency motors Lower energy costs. On an industrial site - 65% of total electricity is used by motors - motor cost equal to 8 to 12 wks of it s electricity Less maintenance and longer life time due to lower temperature in windings and bearings Higher reliability due to lower losses - Better tolerance to thermal stresses resulting from stalls or frequent starting - Increased ability to handle overload conditions. Better resistance to abnormal operating conditions, such as under and over voltage or phase unbalance - Higher tolerance to poorer voltage and current wave shapes

2 EU efficiency classes for 2- and 4-pole motors EU and CEMEP (The European Committee of Manufacturers of Electrical Machines and Power Electronics) have agreed to introduce three efficiency classes for electric motors. The classification applies to 2- and 4- pole standard, low voltage motors, with output kw. This agreement is a part of EU s aim to improve energy efficiency and reduce CO 2 emissions.

3 ABB - years ahead of competition 2-pole motors 4-pole motors ABB has a full range of motors in the highest efficiency class, eff1. ABB also offers standard motors according to eff2. EU and CEMEP have also agreed on cutting the amount of motors in the lowest efficiency class, eff3, by 50% by the year Today, ABB has no motors in this lowest class anymore.

4 Motors according to EPCA requirements The recently amended American Energy Policy and Conservation Act, generally referred to as EPCA, requires electric motors in the kw (1-200 hp) range, manufactured in or imported to the United States or Canada, to meet the efficiency levels demanded by law. ABB Motors wide product range includes motors that fulfil these requirements.

5 Customer benefits of high efficiency motors Lower energy costs Example: To replace an average eff3 motor on the market running at full load with an ABB high efficiency motor will give the following saving: Annual hours run 6000 h Motor rating 11 kw Energy costs EUR Eff. For av. Eff3 motor 87.4% Eff. For ABB HE motor 92% Savings 170 EUR The price of the high efficiency motor is about 500 EUR which means a pay off time of 3 years.

6 Customer benefits of high efficiency motors In a new installation when the customer have to decide between buying a high efficiency motor instead of an average eff3 motor the price difference can be up to 30% to get a pay off time less than one year.

7 Energy saving, Life Cycle Assessment (LCA) The table in next slide compares two standard 11 kw electric motors of different design. Motor A is manufactured by ABB Motors, and Motor X by a competitor. The ABB motor requires more copper and iron to manufacture than motor B, but this makes it more efficient in operation. This means that it uses less electricity than motor X over its lifetime. Operating 8,000 hours per year for 15 years, the more efficient ABB motor will use 140,681 kwh, and the less efficient motor X, 177,978 kwh. With an efficiency of 91.1 per cent, an ABB motor will lose 8.9 per cent of the 140,681 kwh. Motor X, with an efficiency of 89 per cent, will lose 11 per cent of the 177,978 kwh. The table shows the environmental aspects of these two motors based on their losses, manufacture and 96 per cent recycling. Evaluated according to the EPS scheme, motor A has a 21 per cent lower environmental impact.

8 Energy saving, Life Cycle Assessment (LCA) Environmental aspects over full life cycle ABB Motor 11 kw Motor X 11 kw Efficiency 91 % 89 % Use of resources electricity generation average European mix: Coal kg 16,370 20,690 Gas kg 2,070 2,620 Oil kg 3,240 4,090 Steel and other materials (kg) Emissions (kg) 64,278 81,067 percentage CO Total EPS 1) indices 8,260 ELU 2) 10,430 ELU 99.4 % from operation 99.5 % from operation 1) The Environmental Priority Strategies in Design. The EPS method includes five safeguard objects: Human health, biological diversity, biological production, resources and aesthetic values. 2) Environmental Load Limit, ELU, is used to estimate the input of the five safeguard objects of EPS.