Electric motor efficiency - saving Europe's energy
A
Copper Development Association product story
Edited by the Engineeringtalk editorial team
Sep 10, 2003
A new free brochure for OEMs and end users explains EU/CEMEP efficiency ratings, giving advice on which rating to select and showing a worked example of savings to be made.
Over its life a motor can cost 100 times more to run than it did to buy.
So buying a high-efficiency motor can pay for itself many times over in lower energy costs, saving money and saving the environment.
But what does "high efficiency" mean? Before the launch of the EU/CEMEP voluntary labelling scheme for motor manufacturers, "high efficiency" was open to interpretation.
The scheme defines three levels of efficiency, Eff1, Eff2 and Eff3, with Eff1 having the highest efficiency and Eff3 the lowest.
An EFF1 rated motor reduces energy losses by up to 40% which, for a 15kW motor operating for 6000h per year, would save about 4MWh per year.
That's a saving of GBP 130 over the year based the average UK industrial tariff (3.25p/kWh in 2001).
The European Commission, in partnership with CEMEP, has produced a new brochure for OEMs and motor end-users explaining what the different efficiency ratings mean, giving advice on which rating to select and showing a worked example of savings to be made.
The brochure, entitled "Electric motor efficiency - saving Europe's energy and environment", can be obtained free of charge from Copper Development Association, the UK national contact point for the European Motor Challenge Programme.
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