In March 2014 the standard IEC 60034-30-1 was published. It replaced standard IEC 60034-30:2008, which defined three efficiency levels for three-phase induction motors. The new standard IEC 60034-30-1 includes a new fourth efficiency level, or IE4. In addition to the IE4 rating, 8-pole motors and an extended power range have been incorporated into the standard.
The following IEC efficiency classes are now defined for induction motors (IE = International Efficiency) :
|IE1=||Standard Efficiency (efficiency levels roughly equivalent to the existing EFF2 in Europe)|
|IE2 =||High Efficiency (efficiency levels roughly equivalent to the existing EFF1 in Europe and identical to EPAct in the USA for 60 Hz)|
|IE3||Premium Efficiency (new efficiency class in Europe and identical to "NEMA Premium" in the USA for 60Hz)|
|IE4||Super Premium Efficiency|
The standard IEC 60034-30-1:2014 defines efficiency levels and classes for 50 or 60 Hz single or three-phased line motors (regardless of the technology).
The revised standard includes the following line-motors
|Number of poles:||2, 4, 6, 8|
|Power range:||0,12 – 1.000 kW|
|Voltage:||< 1000 V, 50/60 Hz|
|Degree of protection:||all|
|Operating mode:||S1 (permanent operation with constant load); motors, that are designed for different operating modes but can still be operated permanently with rated output.|
|Degree of temperature:||-20°C – +60°C|
|Altitude:||Up to 4.000 m above sea level|
|Smoke Extraction Motors with a temperature class up to 400°C:||yes|
|Validity:||Standard IEC 60034-30-1 valid since March 2014|
What is included?
What motors are covered by the standard?
The scope of the new standard is wider than that of the agreement previously in force in Europe. IEC 60034-30 covers almost all motors (for example standard, hazardous area, marine,
−− Single-speed, three-phase, 50 and 60 Hz
−− 2, 4 or 6-pole
−− Rated output from 0.75 to 375 kW
−− Rated voltage UN up to 1000 V
−− Duty type S1 (continuous duty) or S3 (intermittent periodic
duty) with a rated cyclic duration factor of 80% or higher
−− Capable of operating direct online 50 and 60 Hz
What is excluded?
There are a number of exceptions within the standard:
Motors with 10 or more poles, as well as motors that are designed for variable speed.
Motors with mechanical commutators (e.g. DC-motors).
Motors, which are completely integrated into a machine (e.g. pumps, fans and compressors) and simply cannot be tested on their own, even if bearings and bearing shields are temporarily used on the drive-end site.
Motors with integrated frequency converters (compact-drives), if the motor cannot be tested separately from the converter. The efficiency-classification of compact-drives has to be based on the complete PDS (Power Drive System) and therefore has to be defined in a separate norm.
Brake motors, if the brake is an integral component of the inner motor-construction and can be neither removed nor separately operated during the testing of motor-efficiency.
Submersible motor, which are specifically designed to be operated completely immersed in liquid.
Smoke Extraction Motors with a temperature-class of over 400 °C.
Drives and Automation Ltd are a ‘one-stop’ independent shop for a full range of industrial automation products and system integration services. We provide drive modules, motors, control systems and PLC / SCADA solutions. Independent advice is provided on the most suited product by application. In addition we offer a variety of drive accessories. We are the UK agent for the Sicme Motori range of AC and DC motors.