Rotating electrical machines - Part 30-1: Efficiency classes of line operated AC motors (IE code)

IEC 60034-30-1:2014 specifies efficiency classes for single-speed electric motors that are rated according to IEC 60034-1 or IEC 60079-0, for operation on a sinusoidal voltage supply. This standard establishes a set of limit efficiency values based on frequency, number of poles and motor power. No distinction is made between motor technologies, supply voltage or motors with increased insulation designed specifically for converter operation even though these motor technologies may not all be capable of reaching the higher efficiency classes. This makes different motor technologies fully comparable with respect to their energy efficiency potential.

Drehende elektrische Maschinen - Teil 30-1: Wirkungsrad-Klassifizierung von netzgespeisten Drehstrommotoren (IE-Code)

Machines électriques tournantes - Partie 30-1: Classes de rendement pour les moteurs à courant alternatif alimentés par le réseau (code IE)

L'IEC 60034-30-1:2014 spécifie les classes de rendement pour les moteurs électriques mono vitesse qui sont classés conformément à la CEI 60034-1 ou à la CEI 60079-0. Ces moteurs sont classés pour fonctionner avec une tension d'alimentation sinusoïdale. La présente norme définit un ensemble de valeurs limites de rendement en se basant sur la fréquence, le nombre de pôles et la puissance du moteur. Aucune distinction n'est établie entre les technologies de moteur, la tension d'alimentation ou les moteurs ayant une isolation renforcée, conçus en particulier pour le fonctionnement des convertisseurs, même si ces technologies de moteur peuvent ne pas être toutes en mesure d'atteindre les classes de rendement supérieures. Ceci permet de comparer entièrement des technologies de moteur différentes en fonction de leur potentiel de rendement énergétique.

Električni rotacijski stroji - 30-1. del: Razredi izkoristka enohitrostnih trifaznih motorjev s kratkostično kletko (koda IE) (IEC 60034-30-1:2014)

Standard EN IEC 60034-30-1 določa razrede izkoristkov za enohitrostne električne motorje v skladu s standardom IEC 60034-1 ali IEC 60079-0, ki so opredeljeni za delovanje pri sinusnem napetostnem napajanju in: • imajo nazivno moč PN od 0,12 kW do 1.000 kW; • imajo nazivno napetost od 50 V do največ 1 kV; • imajo 2, 4, 6 ali 8 polov; • lahko neprekinjeno delujejo pri nazivni moči in povišanju temperature v okviru podanega temperaturnega razreda izolacije; • so označeni s poljubno temperaturo okolice v razponu od -20 °C do + 60 °C; • so označeni z nadmorsko višino do največ 4.000 m.

General Information

Status
Published
Publication Date
05-Jun-2014
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
06-Jun-2014
Completion Date
06-Jun-2014

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 60034-30-1:2014
01-oktober-2014
1DGRPHãþD
SIST EN 60034-30:2009

(OHNWULþQLURWDFLMVNLVWURMLGHO5D]UHGLL]NRULVWNDHQRKLWURVWQLKWULID]QLK

PRWRUMHYVNUDWNRVWLþQRNOHWNR NRGD,(  ,(&

Rotating electrical machines - Part 30-1: Efficiency classes of single-speed, three-phase,

cage-induction motors (IE code) (IEC 60034-30-1:2014)
Drehende elektrische Maschinen - Teil 30-1: Wirkungrad-Klassifizierung von
netzgespeisten Drehstrommotoren (IE-Code) (IEC 60034-30-1:2014)

Machines électriques tournantes - Partie 30-1: Classes de rendement pour les moteurs à

courant alternatif alimentés par le réseau (Code IE) (IEC 60034-30-1:2014)
Ta slovenski standard je istoveten z: EN 60034-30-1:2014
ICS:
29.160.30 Motorji Motors
SIST EN 60034-30-1:2014 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60034-30-1:2014
---------------------- Page: 2 ----------------------
SIST EN 60034-30-1:2014
EUROPEAN STANDARD EN 60034-30-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 29.160 Supersedes EN 60034-30:2009,
CLC/TS 60034-31:2011 (partially)
English Version
Rotating electrical machines - Part 30-1: Efficiency classes of
line operated AC motors (IE code)
(IEC 60034-30-1:2014)

Machines électriques tournantes - Partie 30-1: Classes de Drehende elektrische Maschinen - Teil 30-1: Wirkungrad-

rendement pour les moteurs à courant alternatif alimentés Klassifizierung von netzgespeisten Drehstrommotoren

par le réseau (code IE) (IE-Code)
(CEI 60034-30-1:2014) (IEC 60034-30-1:2014)

This European Standard was approved by CENELEC on 2014-04-10. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60034-30-1:2014 E
---------------------- Page: 3 ----------------------
SIST EN 60034-30-1:2014
EN 60034-30-1:2014 - 2 -
Foreword

The text of document 2/1729/FDIS, future edition 1 of IEC 60034-30-1, prepared by IEC/TC 2

"Rotating machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC

as EN 60034-30-1:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2015-01-10
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2017-04-10
the document have to be withdrawn

This document supersedes EN 60034-30:2009 and partially supersedes CLC/TS 60034-31:2011

(Annex A).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.
Endorsement notice

The text of the International Standard IEC 60034-30-1:2014 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60034-5 NOTE Harmonized as EN 60034-5.
IEC 60034-12 NOTE Harmonized as EN 60034-12.
IEC/TS 60034-31:2010 NOTE Harmonized as CLC/TS 60034-31:2011 (not modified).
---------------------- Page: 4 ----------------------
SIST EN 60034-30-1:2014
- 3 - EN 60034-30-1:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is

available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-1 - Rotating electrical machines EN 60034-1 -
Part 1: Rating and performance
IEC 60034-2-1 - Rotating electrical machines EN 60034-2-1 -
Part 2-1: Standard methods for
determining losses and efficiency from
tests (excluding machines for traction
vehicles)
IEC 60034-6 - Rotating electrical machines EN 60034-6 -
Part 6: Methods of cooling (IC Code)
IEC 60038 - IEC standard voltages EN 60038 -
IEC 60079-0 - Explosive atmospheres EN 60079-0 -
Part 0: Equipment - General
requirements
IEC/TS 60034-2-3 - Rotating electrical machines - -
Part 2-3: Specific test methods for
determining losses and efficiency of
converter-fed AC induction motors
IEC/TS 60034-25 - Rotating electrical machines CLC/TS 60034-25 -
Part 25: Guidance for the design and
performance of a.c. motors specifically
designed for converter supply
---------------------- Page: 5 ----------------------
SIST EN 60034-30-1:2014
---------------------- Page: 6 ----------------------
SIST EN 60034-30-1:2014
IEC 60034-30-1
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 30-1: Efficiency classes of line operated AC motors (IE code)
Machines électriques tournantes –
Partie 30-1: Classes de rendement pour les moteurs à courant alternatif
alimentés par le réseau (code IE)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 29.160 ISBN 978-2-8322-1415-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 60034-30-1:2014
– 2 – IEC 60034-30-1:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 8

3 Terms, definitions and symbols ....................................................................................... 9

3.1 Terms and definitions ......................................................................................... 9

3.2 Symbols ............................................................................................................. 9

4 Fields of application ...................................................................................................... 10

5 Efficiency....................................................................................................................... 11

5.1 Determination .................................................................................................. 11

5.1.1 General .......................................................................................... 11

5.1.2 Rated voltages, rated frequencies and rated power ........................ 11

5.1.3 Auxiliary devices ............................................................................. 12

5.2 Rating .............................................................................................................. 12

5.3 Classification and marking ............................................................................... 13

5.3.1 General .......................................................................................... 13

5.3.2 Efficiency classification ................................................................... 13

5.3.3 Motors below IE1 efficiency ............................................................ 13

5.3.4 Marking .......................................................................................... 13

5.4 Nominal limits for efficiency classes IE1, IE2, IE3 and IE4 ............................... 13

5.4.1 Nominal efficiency limits for IE1 ...................................................... 14

5.4.2 Nominal efficiency limits for IE2 ...................................................... 16

5.4.3 Nominal efficiency limits for IE3 ...................................................... 18

5.4.4 Nominal efficiency limits for IE4 ...................................................... 20

5.4.5 Interpolation of nominal efficiency limits of intermediate rated

powers for 50 Hz mains supply frequency ....................................... 21

5.4.6 Interpolation of nominal efficiency limits of intermediate rated

powers for 60 Hz mains supply frequency ....................................... 23

Annex A (informative) Nominal limits for efficiency class IE5 ............................................... 24

Bibliography .......................................................................................................................... 25

Table 1 – Motor technologies and their energy-efficiency potential ....................................... 10

Table 2 – IE-Efficiency classification ..................................................................................... 13

Table 3 – Nominal efficiency limits (%) for 50 Hz IE1 ............................................................ 14

Table 4 – Nominal efficiency limits (%) for 60 Hz IE1 ............................................................ 15

Table 5 – Nominal efficiency limits (%) for 50 Hz IE2 ............................................................ 16

Table 6 – Nominal efficiency limits (%) for 60 Hz IE2 ............................................................ 17

Table 7 – Nominal efficiency limits (%) for 50 Hz IE3 ............................................................ 18

Table 8 – Nominal efficiency limits (%) for 60 Hz IE3 ............................................................ 19

Table 9 – Nominal efficiency limits (%) for 50 Hz IE4 ............................................................ 20

Table 10 – Nominal efficiency limits (%) for 60 Hz IE4 .......................................................... 21

Table 11 – Interpolation coefficients for 0,12 kW up to 0,74 kW ............................................ 22

Table 12 – Interpolation coefficients for 0,75 kW up to 200 kW ............................................. 22

---------------------- Page: 8 ----------------------
SIST EN 60034-30-1:2014
IEC 60034-30-1:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 30-1: Efficiency classes of line operated AC motors (IE code)
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60034-30-1 has been prepared by IEC technical committee 2:

Rotating machinery.

This first edition of IEC 60034-30-1 cancels and replaces IEC 60034-30 (2008). It also

cancels and replaces Annex A of IEC 60034-31 (2010). In the next revision of IEC 60034-

31:2010 this annex will be removed from its contents.
The text of this standard is based on the following documents:
FDIS Report on voting
2/1729/FDIS 2/1739/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.
---------------------- Page: 9 ----------------------
SIST EN 60034-30-1:2014
– 4 – IEC 60034-30-1:2014 © IEC 2014

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

NOTE A table of cross-references of all IEC TC 2 publications can be found on the IEC TC 2 dashboard on the

IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 10 ----------------------
SIST EN 60034-30-1:2014
IEC 60034-30-1:2014 © IEC 2014 – 5 –
INTRODUCTION

This IEC standard provides for the global harmonization of energy-efficiency classes of

electric motors. It deals with all kinds of electric motors that are rated for line operation

(including starting at reduced voltage). This includes all single- and three-phase low voltage

induction motors, regardless of their rated voltage and frequency, as well as line-start

permanent-magnet motors.

A second part of this standard series (IEC 60034-30-2) will be prepared for motors rated for

variable voltage and frequency supply, such as synchronous motors. The second part will also

provide for harmonic voltage losses in motors capable of line operation when fed by

frequency converters.

IEC 60034-30-1 widens the product range covered in the first edition of IEC 60034-30

significantly. The power range has been expanded (starting at 0,12 kW and ending at 1 000

kW). All technical constructions of electric motors are covered as long as they are rated for

on-line operation and not just three-phase, cage-induction motors as in the first edition.

The IE4 class is newly included in this standard. The informative definition of IE4, which was

previously included in IEC/TS 60034-31:2010, is therefore outdated.

The new class IE5 is not yet defined in detail but is envisaged for potential products in a

future edition of the standard.

For a given power and frame size it is generally easier to achieve a higher motor efficiency

when the motor is designed for and operated directly on-line with a 60 Hz supply frequency

rather than on 50 Hz as explained in Note 1.

NOTE 1 As the utilization and size of motors are related to torque rather than power the theoretical power of

single-speed motors increases linearly with supply frequency (and hence with speed), i.e. by 20 % from 50 Hz to

60 Hz.

I R winding-losses are dominant especially in small and medium sized induction motors. They basically remain

constant at 50 Hz and 60 Hz as long as the torque is kept constant. Although windage, friction and iron losses

increase with frequency, they play a minor role especially in motors with a number of poles of four and higher.

Therefore, at 60 Hz, the losses increase less than the 20 % power increase when compared to 50 Hz and

consequently, the efficiency is improved.

In practice, both 60 Hz and 50 Hz power designations of single-speed motors have to conform to standard power

levels in accordance with IEC 60072-1 and local standards such as EN 50347. Therefore, an increased rating of

motor power by 20 % is not always possible. However the general advantage of 60 Hz still applies when the motor

design is optimized for the respective supply frequency rather than just re-rated.

The difference in efficiency between 50 Hz and 60 Hz varies with the number of poles and the size of the motor. In

general, the 60 Hz efficiency of three-phase, cage-induction motors in the power range from 0,75 kW up to 375 kW

is between 2,5 percentage points to less than 0,5 percentage points greater when compared to the 50 Hz

efficiency. Only large 2-pole motors may experience a reduced efficiency at 60 Hz due to their high share of iron,

windage and friction losses.

It is not expected that all manufacturers will produce motors for all efficiency classes nor all

ratings of a given class.

Users should select the efficiency class in accordance with a given application depending on

the actual operating hours. It may not be energy efficient to select motors of a high efficiency

class for intermittent or short time duty due to increased inertia and start-up losses.

NOTE 2 The application guide IEC/TS 60034-31:2010 gives further information on useful applications of high-

efficient electric motors.

In order to achieve a significant market share it is essential for high-efficiency motors to meet

national/regional standards for assigned powers in relation to mechanical dimensions (such

as frame-size, flanges). There are a number of national/regional frame assignment standards

(EN 50347, JIS C 4212, NBR 17094, NEMA MG13, SANS 1804 and others) but there is no

---------------------- Page: 11 ----------------------
SIST EN 60034-30-1:2014
– 6 – IEC 60034-30-1:2014 © IEC 2014

IEC standard. As this standard (IEC 60034-30-1) defines energy-efficiency classes

independent of dimensional constraints it may not be possible in all markets to produce

motors with higher efficiency classes and maintain the mechanical dimensions of the

national/regional standards.

IE codes are not limited to motors but may be used to classify other components such as

frequency converters and gearboxes.

However, it is anticipated that other components are rated with a comparable system: IE1

meaning low efficiency up to IE5 meaning the highest efficiency.

Combinations of components (such as power drive systems) will need a combined efficiency

rating. That rating should not be an IE code in order to avoid confusion. It will be defined in

other IEC standards.

The efficiency levels in this standard for 50 Hz and 60 Hz are not always entirely consistent

across all numbers of poles and over the whole power range.

NOTE 3 The efficiency levels for 60 Hz motors were assigned for compatibility with U.S. legal requirements.

NOTE 4 The efficiency levels for 50 Hz motors between 0,75 kW and 375 kW remain unchanged for compatibility

with European legal requirements.
---------------------- Page: 12 ----------------------
SIST EN 60034-30-1:2014
IEC 60034-30-1:2014 © IEC 2014 – 7 –
ROTATING ELECTRICAL MACHINES –
Part 30-1: Efficiency classes of line operated AC motors (IE code)
1 Scope

This part of IEC 60034 specifies efficiency classes for single-speed electric motors that are

rated according to IEC 60034-1 or IEC 60079-0, are rated for operation on a sinusoidal

voltage supply and:
• have a rated power P from 0,12 kW to 1 000 kW;
• have a rated voltage U above 50 V up to 1 kV;
• have 2, 4, 6 or 8 poles;

• are capable of continuous operation at their rated power with a temperature rise within the

specified insulation temperature class;

NOTE 1 Most motors covered by this standard are rated for duty type S1 (continuous duty). However, some

motors that are rated for other duty cycles are still capable of continuous operation at their rated power and

these motors are also covered.
• are marked with any ambient temperature within the range of –20 °C to + 60 °C;

NOTE 2 The rated efficiency and efficiency classes are based on 25 °C ambient temperature according to

IEC 60034-2-1.

NOTE 3 Motors rated for temperatures outside the range – 20 °C and + 60 °C are considered to be of special

construction and are consequently excluded from this standard.

NOTE 4 Smoke extraction motors with a temperature class of up to and including 400 °C are covered by this

standard.
• are marked with an altitude up to 4 000 m above sea level.

NOTE 5 The rated efficiency and efficiency class are based on a rating for altitudes up to 1 000 m above sea

level.

This standard establishes a set of limit efficiency values based on frequency, number of poles

and motor power. No distinction is made between motor technologies, supply voltage or

motors with increased insulation designed specifically for converter operation even though

these motor technologies may not all be capable of reaching the higher efficiency classes

(see Table 1). This makes different motor technologies fully comparable with respect to their

energy efficiency potential.

NOTE 6 Regulators should consider the above constraints when assigning national minimum energy-efficiency

performance standards (MEPS) with respect to any particular type of motor.

The efficiency of power-drive systems is not covered by this standard. In particular, motor

losses due to harmonic content of the supply voltage, losses in cables, filters and frequency-

converters, are not covered.

Motors with flanges, feet and/or shafts with mechanical dimensions different from

IEC 60072-1 are covered by this standard.

Geared motors are covered by this standard including those incorporating non-standard

shafts and flanges.
Excluded are:
• Single-speed motors with 10 or more poles or multi-speed motors.
---------------------- Page: 13 ----------------------
SIST EN 60034-30-1:2014
– 8 – IEC 60034-30-1:2014 © IEC 2014
• Motors with mechanical commutators (such as DC motors).

• Motors completely integrated into a machine (for example pump, fan and compressor) that

cannot be practically tested separately from the machine even with provision of a

temporary end-shield and drive-end bearing. This means the motor shall: a) share

common components (apart from connectors such as bolts) with the driven unit (for

example, a shaft or housing) and; b) not be designed in such a way as to enable the motor

to be separated from the driven unit as an entire motor that can operate independently of

the driven unit. That is, for a motor to be excluded from this standard, the process of

separation shall render the motor inoperative.

(TEAO, IC418) Totally enclosed air-over machines, i.e. totally enclosed frame-surface

cooled machines intended for exterior cooling by a ventilating means external to the

machine, are covered by this standard. Efficiency testing of such motors may be

performed with the fan removed and the cooling provided by an external blower with a

similar airflow rate as the original fan.

• Motors with integrated frequency-converters (compact drives) when the motor cannot be

tested separately from the converter. Energy efficiency classification of compact drives

shall be based on the complete product (PDS : Power Drive System) and will be defined in

a separate standard.

NOTE 7 A motor is not excluded when the motor and frequency-converter can be separated and the motor

can be tested independently of the converter.

• Brake motors when the brake is an integral part of the inner motor construction and can

neither be removed nor supplied by a separate power source during the testing of motor

efficiency.

NOTE 8 Brake motors with a brake coil that is integrated into the flange of the motor are covered as long as it

is possible to test motor efficiency without the losses of the brake (for example by dismantling the brake or by

energizing the brake coil from a separate power source).

When the manufacturer offers a motor of the same design with and without a brake the

test of motor efficiency may be done on a motor without the brake. The determined

efficiency may then be used as the rating of both motor and brake motor.

• Submersible motors specifically designed to operate wholly immersed in a liquid.

• Smoke extraction motors with a temperature class above 400 °C.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60034-1, Rotating electrical machines – Part 1: Rating and performance

IEC 60034-2-1, Rotating electrical machines – Part 2-1: Standard methods for determining

losses and efficiency from tests (excluding machines for traction vehicles)

IEC/TS 60034-2-3, Rotating electrical machines – Part 2-3: Specific test methods for

determining losses and efficiency of converter-fed AC induction motors
IEC 60034-6, Rotating electrical machines – Part 6: Methods of cooling (IC Code)

IEC/TS 60034-25, Rotating electrical machines – Part 25: Guidance for the design and

performance of a.c. motors specifically designed for converter supply
IEC 60038, IEC standard voltages
---------------------- Page: 14 ----------------------
SIST EN 60034-30-1:2014
IEC 60034-30-1:2014 © IEC 2014 – 9 –
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60034-1 and the

following apply.
3.1.1
single-speed motor
motor rated for 50 Hz and/or 60 Hz on-line operation

Note 1 to entry: Single-speed motors may be capable of frequency converter operation with variable speed.

3.1.2
multi-speed motor

motor rated for 50 Hz and/or 60 Hz on-line operation that has multiple windings or a

switchable winding to provide two or more different number of poles with different

synchronous speeds
3.1.3
variable speed motor

motor rated for a speed range and supplied by voltage of variable amplitude and frequency

3.1.4
brake motor
motor equipped with an electro-mechanical brake uni
...

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