Baldor develops IE3-rated motors
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Baldor product story
Edited by the Engineeringtalk editorial team
Aug 10, 2009
The IE3 minimum efficiency standard for electric motors that will become part of Europe's mandatory requirements starting in 2015 is already available in Baldor's range.
IE3 is effectively the same as the Nema Premium standard in the US.
Over the last few years, Baldor has developed a broad range of super-efficient IEC frame types alongside its Nema Premium motors for domestic US markets.
With efficiencies up to 96 per cent plus, upgrading to one of these IE3 motors could repay a motor's capital investment cost several times over by 2015, as well as generate substantial ongoing energy cost savings for users, according to Baldor.
The higher efficiency standards start to come into force in Europe in 2011 when all general-purpose AC motors installed in the EU must meet a minimum efficiency of IE2 - equivalent to the previous CEMEP Eff 1 standard.
The minimum standard becomes a step higher again from 2015 onwards when all motors will either need to meet IE3 - which is up to three percentage points better efficiency than IE2 - or be a combination of an IE2-rated motor with a variable speed control.
Baldor's standard IEC frame IE3 range of AC motors - called Super-E Metric - spans 22 power ratings from 4kW to 375kW, with a choice of three speed options at each rating.
Maximum efficiencies at full load start at 89.9 per cent for a 4kW four-pole motor, and go up to more than 96.3 per cent for high-power motors.
Baldor also offers higher voltage, ultra-high efficiency motors for higher power applications up to 10MW.
All of the standard motors feature cast-iron frames for durability, and will run from 50Hz, 380-415V three-phase supplies.
They are additionally rated for use at 60Hz/460V making them suitable for use in the US.
Baldor also offers a broad selection of IE3-rated motors in Nema frames.
The company can specify IE3-rated motors with a range of protection options for applications including all-stainless-steel washdown duty types, severe duty and chemical duty (IEEE 841 compliant).
All Super-E Metric motors are wound with Baldor's ISR (inverter spike resistant) magnet wire, making them up to 100 times more resistant to transient voltage spikes, high frequencies and short rise-time pulses commonly produced by inverters.
This results in all Super-Es being 'inverter ready'.
These motors use improved insulation materials and can withstand peak voltages up to 1,600V for extended reliability.
Every Super-E motor is also balanced to the Baldor standard.
This results in fewer mechanical stresses, particularly on motor bearings, extending the life of the motor.
Baldor supplies these motors with a three-year warranty and offers a free advisory service to help users make a transition to higher-efficiency motors, wherever a motor replaces an existing, less-efficient type.
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Contact Baldor
Tel +44 1454 850000
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