Page 6 - OMEGA MOTOR Teknik Katalog (EN 01-2019)
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LV Induction Motors - EN 01/2019     Omega Motor

       2.1. IEC 60034-30-1:2014

       IEC 60034-30-1: 2014 specifies the latest efficiency classes for single-speed electric motors that are rated according to IEC 60034-1 and
       operating on a sinusoidal voltage supply.
       The motors listed below are excluded from this standard:
         Single-speed motors with 10 or more poles or multi speed motors.

         Motors completely integrated into  a machine (for example pump, fan and compressor) that cannot be tested separately from the
         driven machine.
         Motors with integrated frequency converter (compact drives) when the motor cannot be tested separately from the converter.
         Brake motors when the brake is an integral part of the inner motor construction and cannot be dismantled or separately fed.
         Submersible motors specially designed to operate wholly immersed in a liquid.




                                       %
                                       100


                                       90


                                       80


                                       70
                                                       less than IE1 efficiency class
                                       60


                                       50                                                        kW
                                         0,12                        0,75                             5,5  7,5      15          30   45     75  110     200     375 500    1000
        Efficiency levels for 4 pole motors                       Directive Scope
        (IEC 60034-30-1:2014)

                                                             IEC 60034-30-1:2014 Scope




       2.2. IEC 60034-2-1:2014

       IEC defines three different preferred testing methods in the latest IEC 60034-2-1:2014/06 standard, in order to determine the efficiencies
       of rotating electrical machines.

       Omega Motor uses test Method 2-1-1B with low uncertainty. This is an indirect method and determines the efficiency by summation of
       losses  with  additional  load losses  from  residual  losses.  The  respective  loss  components are  iron  losses,  windage and  friction  losses,
       stator and rotor losses and additional load losses. These losses are calculated by parameters measured and derived during the test of
       the motor, hence by their summation, the motor efficiency is determined precisely.

       There are two other test methods in the standards which can be preferred depending on the type or rating of the machine under test.
        Method 2-1-1A: Direct measurement of input and output
        Method 2-1-1C: Summation of losses with additional load losses from assigned allowance.















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