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Drive systems

High-efficiency motors: new standards and directives

Standard IEC 60034-30 defines the principle to be adopted and brings global harmonisation to energy efficiency classes for electric motors throughout the world.

Directive 2005/32/EC (6 July 2005) from the European Parliament has established a framework for setting the eco-design requirements to be applied to “energy-using products”. These products are grouped in lots. Motors come under lot 11 of the eco-design programme, as do pumps, fans and circulating pumps.

The European EuP directive - lot 11 - was voted on in July 2009. It is based on IEC standard 60034-30 and defines the efficiency classes whose use will be mandatory in the future. It specifies the efficiency levels to be attained for machines sold in the European market and outlines the timetable for their implementation.

Leroy-Somer already has IE2 class IP 55 motors:
the LSES / FLSES series, from 0.75 to 375 kW with 2 and 4 poles, as well as IE3 class motors.

These motor series with aluminium and cast iron frame respectively are available, depending on the power ratings involved, with very short lead times.

They are also characterised by their high degree of modularity. In fact, LSES/FLSES motors offer not only numerous mechanical options (non-standard flange, special shaft, modified terminal box, etc) but also a wide variety of electrical adaptations (special connections and voltages, thermal protection, etc).