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FEATURE DRIVES, CONTROLS & MOTORS single-phase motors must comply with efficiency requirements A
new dawn for single-phase motors is coming. From July 1st this year, most single-phase motors will be required
to meet or exceed efficiency levels of IE2, to comply with EU EcoDesign regulation EU2019/1781. This new efficiency will be demanded for single-phase motors with rated outputs from 0.12kW upwards. Variable speed drives intended for use with
single-phase motors will also be required to meet new efficiency standards compatible with the new motor requirements. The new Regulation establishes ‘EcoDesign’
requirements for the placing on the market or the putting into service of single-phase electric motors and variable speed drives, including where they are integrated in other products. Achieving the new levels of efficiency
required to meet IE2 will come at a cost, due to the need for much more active material, low-loss steel laminations and copper. The consequence of these factors could lead to possible changes to either frame size or performance, or maybe even both. Producing dual voltage (230/115v) motors
might not be possible whilst dual frequency motors (50/60Hz) will present their own issues.
Single phase motor with capacitors and power switch
Also, 60Hz motors will be challenging and more costly to produce because of the winding losses incurred at higher running speeds. As a market leader in single-phase
technology with over 60 years’ experience in design and manufacture, Lafert Electric Motors is among the best to contact for guidance. This is especially the case because many motor
manufacturers have decided that the new legislation is far too complex and consequently discontinued single phase motors. In contrast, Lafert Electric Motors has even expanded the powers that can be offered. Furthermore, due to the company’s flexible designs, it can offer many variations of customised shafts and flanges along with very specific electrical designs. Due to current production lead times across
all industries, however, it is vitally important that any OEM or customer using single phase motors should ensure they either meet compliance or will have assured continuation of supply from their current supplier after the summer of 2023. There are some single-phase motors to
which these new efficiency requirements will not apply. Typically, such motors are designed to operate under specific conditions or configured to perform a particular function. Exempt motors might be employed in difficult environments and/or used for applications that make it impossible for the new efficiencies to be implemented.
Lafert Electric Motors T: 01270 270022
16 DESIGN SOLUTIONS MARCH 2023
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