search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
DRIVES, CONTROLS & MOTORS FEATURE IE4 and IE5 motors: A simple way to reduce emissions


With increasing evidence indicating global warming, perhaps industry should be accelerating its adoption of the best of currently available energy efficient technologies? With regards to electric motors, a Draft ISC Revision published in July 2018


required the use of IE3 standard motors (0.75 to 1000kW) from January 2020. Yet motors achieving IE4 and IE5 efficiencies have been available for years and have been proven in the field, particularly for continuously running items such as compressors, fans, pumps, lifts, escalators and conveyors. Increasingly, industry is adopting these IE4 and IE5 motors, with many industrial machinery manufacturers now incorporating them as part of original equipment. The attraction is clear


when some in the market claim energy savings of up to 20%. With increased efficiency of this level, the minimal additional cost incurred from specifying IE4 or IE5 motors could be recovered rapidly, followed by on-going savings potentially amounting to thousands of pounds a year, depending on motor usage. It could be considered as a ‘win-win’ situation with the end user reducing costs, lowering emissions and benefitting from a significantly more efficient system. HVAC systems could benefit considerably from the use of IE4 and IE5


motors as many operations require continuously running motors. By incorporating elements that are ideal for these motors – compressors, pumps and fans – energy savings (and reduced costs) would soon mount up.


Typically, IE4 and IE5 motors are based upon permanent magnet


motor technology, which provides additional benefits: weight reduction can be up to 50%, whilst a motor can be two frame sizes smaller than the standard asynchronous alternative. These features in turn potentially result in the need for less robust mountings and fixings, further reducing the weight and size of the installation. Amongst these permanent magnet high efficiency motors are versions developed specifically for large diameter fans and lifts – commercial and domestic. The motors designed specifically for large ceiling fans (up to 7m) are typically employed in auditoriums, shopping malls,


airports and sports arenas. They eliminate the need for gearboxes, can reduce energy consumption by


up to 50% and minimise operating noise. As well as offering energy efficiency, permanent magnet motors


for lifts are designed to eliminate the space and high maintenance challenges of conventional electric motor/gearbox and hydraulic systems. Depending upon elevator load, these gearless motors are said to provide energy savings of between 45 and 70%. Furthermore, due to their compact design, smaller sheaves and light


weight, they can be installed in the lift shaft without impeding lift car travel, thereby eliminating the need for a machine room and enabling buildings to take lifts to an additional floor.


Lafert Electric Motors T: 01270 270022





DESIGN SOLUTIONS | DECEMBER/JANUARY 2019


27


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44