General Purpose Three-Phase Induction Motors - Technical data0 pages

General Purpose 3-phase Induction Motors

INTRODUCTION
New efficiency classes for the low-voltage three-phase motors (IE = International Efficiency).
Along with the international discussion on energy efficiency a worldwide harmonized energy efficiency classification
system has been established for low-voltage three-phase asynchronous motors.
For many years low-voltage three-phase motors in the European Union have been sold in three efficiency classes EFF3,
EFF2 and EFF1. Aside from this, many different efficiency classification systems have been introduced and well-proven in
many countries all over the world.
This was the reason for the International Electrotechnical Commission IEC to develop and publish an energy efficiency
standard which replaces all previous national issues. In parallel IEC developed and issued a new standard for determining
motor efficiency. The new standard IEC 60034-30 defines and harmonizes worldwide the efficiency classes IE1, IE2 and IE3
for low-voltage three-phase motors in the power range from 0.75 kW to 375 kW (2p=2, 4, 6):

IE1 = Standard Efficiency
IE2 = High Efficiency
IE3 = Premium Efficiency
From now motors can be offered and sold with the new classes IE1, IE2 and IE3.
In that case the efficiency has to be determined according to the new requirements given in the IEC 60034-2-1 standard.

According to the Comission Regulation (EC) No 640/2009 (introduced in July 2009) the required efficiency class
of general-purpose motors (introduced to the market in future) will be as follows:
From 16 June 2011, motors placed for the first-time on the market shall have a minimum efficiency class of IE2.
From 1 January 2015: motors with a rated output between 7.5 - 375 kW shall have a minimum efficiency class of IE3,
or IE2 if they are operated/equipped with electronic speed control (VSD).
From 1 January 2017: motors with a rated output between 0.75 - 375 kW shall have a minimum efficiency class of IE3,
or IE2 if they are operated/equipped with electronic speed control (VSD).
Electronic speed control is carried out using a frequency converter (VSD) that adjusts the
speed of the motor - and therefore the torque produced - based on the energy needed.

2010
IE2 (0,75 - 375kW)

2011

2015

2017

Change in the law from 16.06.2011.

IE3 (7,5 - 375kW), IE2 (with VSD)

IE3 (0,75 - 375kW), IE2 (with VSD)

Cantoni Group IE1 motors

Cantoni Group 2SIE motors (IE2)

Cantoni Group has offered energy efficiency motors for several years.
Our motors of SEE series fulfil EFF1 standards according to CEMEP.
We carry out intensive research and measurement of the motors according to the new standards
IEC 60034-30 and IEC 60034-2-1.

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