Optimizing induction motor efficiencyToday’s Energy Solutions, June 16, 2014
The International Electrotechnical Commission (IEC) developed global standard definitions for induction motor efficiency levels in 2008 to give consumers a measured way to compare products and to help reduce carbon dioxide emissions. Governments worldwide have used these classifications – which fall into three levels: IE1, IE2, and IE3 – to set minimum qualifications a motor must meet to make it to market. The European Union (EU) in 2011 voted motors must at least adhere to IE2 rules. Introduction of IE3 is expected in 2015.
But motor manufacturers are looking beyond 2015 – and beyond IE3 standards. They want to hit IE4 standards, drafted by the IEC in 2010, but still without an official definition. IE4, also called the super-premium efficiency, was originally intended to be informative, calling for motors to have at least a 15% loss difference in relation to IE3.
“Energy efficiency has to be one of the key determining factors when specifying geared motor solutions,” says Markus Kutny, product specialists at Bauer Gear Motor. “Energy prices are only going to go one way, so it is important that a drive’s lifelong running costs are considered, rather than simply the cost of procurement.”