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High Efficiency Three-phase AC motors | ||||||||||||||||||||
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Motors use most of the electricity in industry. With two-thirds of industry’s electricity costs being due to motors, significant savings can be made with the right approach. The use of energy efficient motors is a worldwide industry trend, due to the need to reduce energy costs and the need to preserve the environment. | ||||||||||||||||||||
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New Efficiency Regulation The IEC has just published the new standard related to energy-efficiency: 60034-30. This standard proposes efficiency classes’ harmonization amongst different practices throughout the world. It defines three minimum efficiency classes and identifies them using the IE code: Standard Efficiency (IE1), High Efficiency (IE2) and Premium Efficiency (IE3) The standard also defines that IEC 60034-2-1 must be used with regards to testing methods. The methods defined in this standard are recognized as being of lower uncertainty. Manufacturers must state in their documentation which method they use to determine the stray load losses, because they are not comparable if different methods are used. The EuP-Directive 2005/32/EC establish the Ecodesign requirements for electric motor and define High Efficiency (IE2) as minimum efficiency levels as from 16th June 2011. But you do not need to wait until it becomes a mandatory requirement to benefit from High Efficiency or Premium Efficiency WONDER motors. The EuP-Directive 2005/32/EC also establish that Premium Efficiency (IE3) or IE2 + VFD will be required from 7.5kW up to 375kW as from 1st January 2015. And that the complete kW range 0.75kW up to 375kW in IE3 (or IE2 +VFD) will be required as from 1st January 2017.
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