Rotating electrical machines - Part 30: Efficiency classes of single-speed, three-phase, cage-induction motors (IE-code)

IEC 60034-30:2008 specifies efficiency classes for single-speed, three-phase, 50 Hz and 60 Hz, cage-induction motors.

Drehende elektrische Maschinen - Teil 30: Wirkungsgrad-Klassifizierung von Drehstrommotoren mit Käfigläufern, ausgenommen polumschaltbare Motoren (IE-Code)

Machines électriques tournantes - Partie 30: Classes de rendement pour les moteurs à induction triphasés à cage, mono vitesse (Code IE)

La CEI 60034-30:2008 spécifie les classes de rendement pour les moteurs électriques à induction triphasés 50 Hz et 60 Hz à cage, mono vitesse.

Električni rotacijski stroji - 30. del: Razredi izkoristka pri enohitrostnih trifaznih motorjih z indukcijsko kletko (koda IE) (IEC 60034-30:2008)

General Information

Status
Withdrawn
Publication Date
25-Mar-2009
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
6060 - Document made available
Due Date
26-Mar-2009
Completion Date
26-Mar-2009

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SLOVENSKI STANDARD
SIST EN 60034-30:2009
01-maj-2009

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

cage-induction motors (IE code) (IEC 60034-30:2008)
Drehende elektrische Maschinen - Teil 30: Wirkungsgrad-Klassifizierung von
Drehstrommotoren mit Käfigläufern, ausgenommen polumschaltbare Motoren (IE-Code)
(IEC 60034-30:2008)

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

induction triphasés à cage, mono vitesse (Code IE) (CEI 60034-30:2008)
Ta slovenski standard je istoveten z: EN 60034-30:2009
ICS:
29.160.30 Motorji Motors
SIST EN 60034-30:2009 en,fr

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

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SIST EN 60034-30:2009
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SIST EN 60034-30:2009
EUROPEAN STANDARD
EN 60034-30
NORME EUROPÉENNE
March 2009
EUROPÄISCHE NORM
ICS 29.160
English version
Rotating electrical machines -
Part 30: Efficiency classes of single-speed, three-phase,
cage-induction motors (IE-code)
(IEC 60034-30:2008)
Machines électriques tournantes - Drehende elektrische Maschinen -
Partie 30: Classes de rendement Teil 30: Wirkungsgrad-Klassifizierung
pour les moteurs à induction triphasés von Drehstrommotoren mit Käfigläufern,
à cage, mono vitesse (Code IE) ausgenommen polumschaltbare Motoren
(CEI 60034-30:2008) (IE-Code)
(IEC 60034-30:2008)

This European Standard was approved by CENELEC on 2009-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

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

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

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

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60034-30:2009 E
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SIST EN 60034-30:2009
EN 60034-30:2009 - 2 -
Foreword

The text of document 2/1518/FDIS, future edition 1 of IEC 60034-30, prepared by IEC TC 2, Rotating

machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as

EN 60034-30 on 2009-03-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60034-30:2008 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 60034-5:2001 (not modified).
IEC 60034-12 NOTE Harmonized as EN 60034-12:2002 (not modified).
IEC/TS 60034-17 NOTE Harmonized as CLC/TS 60034-17:2004 (not modified).
IEC/TS 60034-25 NOTE Harmonized as CLC/TS 60034-25:2008 (not modified).
IEC 60079-0 NOTE Harmonized as EN 60079-0:2006 (modified).
__________
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SIST EN 60034-30:2009
- 3 - EN 60034-30:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60034-1 - Rotating electrical machines - EN 60034-1 2004
Part 1: Rating and performance
1) 2)
IEC 60034-2-1 - Rotating electrical machines - EN 60034-2-1 2007
Part 2-1: Standard methods for determining
losses and efficiency from tests (excluding
machines for traction vehicles)
1) 2)
IEC 60034-6 - Rotating electrical machines - EN 60034-6 1993
Part 6: Methods of cooling (IC Code)
IEC 60072-1 - Dimensions and output series for rotating - -
electrical machines -
Part 1: Frame numbers 56 to 400 and flange
numbers 55 to 1 080
Undated reference.
Valid edition at date of issue.
---------------------- Page: 5 ----------------------
SIST EN 60034-30:2009
---------------------- Page: 6 ----------------------
SIST EN 60034-30:2009
IEC 60034-30
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 30: Efficiency classes of single-speed, three-phase, cage-induction motors
(IE-code)
Machines électriques tournantes –
Partie 30: Classes de rendement pour les moteurs à induction triphasés à cage,
mono vitesse (Code IE)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 29.160 ISBN 2-8318-1013-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 60034-30:2009
– 2 – 60034-30 © IEC:2008
CONTENTS

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

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

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

2 Normative references .......................................................................................................7

3 Terms, definitions and symbols ........................................................................................8

3.1 Terms and definitions ..............................................................................................8

3.2 Symbols ..................................................................................................................8

4 Fields of application (informative) .....................................................................................8

5 Efficiency .........................................................................................................................9

5.1 Determination..........................................................................................................9

5.1.1 General .......................................................................................................9

5.1.2 Rated voltages, rated frequencies and rated output .....................................9

5.1.3 Auxiliary devices .......................................................................................10

5.2 Rating ...................................................................................................................10

5.3 Classification and marking.....................................................................................10

5.3.1 General .....................................................................................................10

5.3.2 Efficiency classification..............................................................................11

5.3.3 Motors below standard efficiency...............................................................11

5.3.4 Marking .....................................................................................................11

5.4 Nominal efficiency limits ........................................................................................11

5.4.1 Interpolation ..............................................................................................11

5.4.2 Nominal limits for Standard Efficiency (IE1) ...............................................12

5.4.3 Nominal limits for High Efficiency (IE2) ......................................................14

5.4.4 Nominal limits for Premium Efficiency (IE3) ...............................................15

Bibliography..........................................................................................................................17

Figure 1 – Allocation of the saving potential by installed motors in the industrial sector ..........5

Table 1 – IE-Efficiency classification.....................................................................................11

Table 2 – Interpolation coefficients (informative) ...................................................................12

Table 3 – Nominal limits (%) for Standard Efficiency (IE1) 50 Hz ..........................................12

Table 4 – Nominal limits (%) for Standard Efficiency (IE1) 60 Hz ..........................................13

Table 5 – Nominal limits (%) for High Efficiency (IE2) 50 Hz .................................................14

Table 6 – Nominal limits (%) for High Efficiency (IE2) 60 Hz .................................................14

Table 7 – Nominal limits (%) for Premium Efficiency (IE3) 50 Hz...........................................15

Table 8 – Nominal limits (%) for Premium Efficiency (IE3) 60 Hz...........................................16

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SIST EN 60034-30:2009
60034-30 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 30: Efficiency classes of single-speed,
three-phase, cage-induction 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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 has been prepared by IEC technical committee 2:

Rotating machinery.
The text of this standard is based on the following documents:
FDIS Report on voting
2/1518/FDIS 2/1521/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.

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

A list of all parts of IEC 60034 series, under the general title, Rotating electrical machines,

can be found on the IEC website.
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SIST EN 60034-30:2009
– 4 – 60034-30 © IEC:2008

A table of cross-references of all IEC technical committee 2 publications can be found in the

IEC technical committee 2 dashboard on the IEC website.

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

the maintenance result 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 60034-30:2009
60034-30 © IEC:2008 – 5 –
INTRODUCTION

This International Standard provides for the global harmonization of energy-efficiency classes

for electric motors.

Electric motor applications in industry consume between 30 % and 40 % of the generated

electrical energy worldwide. Improving efficiency of the complete drive system (i.e. motor and

adjustable-speed drives) including the application (or process) is therefore a major concern in

energy-efficiency efforts. The total energy saving potential of an optimized system is assumed

to be around 30 % to 60 %.

According to the findings of the IEA 7 July 2006 Motor Workshop, electric motors with

improved efficiency in combination with frequency converters can save about 7 % of the total

worldwide electrical energy. Roughly one quarter to one third of these savings come from the

improved efficiency of the motor. The remaining part results from system improvements.

Many different energy efficiency standards for cage induction motors are already in use

(NEMA, EPACT, CSA, CEMEP, COPANT, AS/NZS, JIS, GB and others) with new classes

currently being developed. It becomes increasingly difficult for manufacturers to design

motors for a global market and for customers to understand differences and similarities of

standards in different countries.

Motors from 0,75 kW up to 375 kW make up the vast majority of installed motor population

and are covered by this standard as shown in Figure 1.
Allocation of the saving potential by installed motors in the industrial sector
(installed capacity multiplied by the average efficiency improvement)
35 %
30 %
25 %
20 %
15 %
10 %
5 %
0 %
0,75 kW 4 kW 10 kW 30 kW 70 kW 130 kW
< 500 kW
< 0,75 kW to to to to to to
< 4 kW < 10 kW < 30 kW < 70 kW < 130 kW < 500 kW

Sources: 1. SAVE-Report "Improving the Penetration of Energy Efficient Motors and Drives" (1996)

2. CEMEP calculations
IEC 1823/08

Figure 1 – Allocation of the saving potential by installed motors in the industrial sector

In some countries smaller motors are included in energy efficiency regulations. Most of these

motors are not three-phase, cage-induction machines. Also they typically do not run

continuously so their energy saving potential is rather limited.

In some countries 8-pole motors are included in energy efficiency regulations. However, their

market share is already very low (1 % or less). Due to increasing acceptance of variable-

speed drives and the low cost associated with 4- and 6-pole standard motors it is expected

that 8-pole motors will even further disappear from the general market in the future.

Therefore, this standard does not include provisions for 8-pole motors.
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SIST EN 60034-30:2009
– 6 – 60034-30 © IEC:2008

For a given output power and frame size it is generally easier to reach a high motor efficiency

when the motor is designed for and operated at 60 Hz mains supply frequency rather than at

50 Hz.

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

increases linearly with speed, i.e. by 20 % from 50 Hz to 60 Hz.

I²R winding-losses are dominant especially in small and medium sized induction motors. They basically remain

constant for 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 in these motors. Therefore, at 60 Hz, the losses increase less than

the 20 % output-power increase compared to 50 Hz and the efficiency improves.

In practice, both 60 Hz and 50 Hz output power designations should conform to standard power levels in

accordance with IEC 60072-1 and local standards like EN 50347. Therefore, an increased rating of motor power by

20 % is not always possible. However, the general advantage of 60 Hz still applies if 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 output power range from 0,75 kW up to

375 kW is between 2,5 % to less than 0,5 % 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.

In this standard, the nominal 50 Hz limits of Standard (IE1) and High Efficiency (IE2) are

based on the CEMEP-EU EFF2 and EFF1 limits respectively. However, they have been

adjusted to take the different test procedures into account (CEMEP: Additional load losses

P flat 0,5 % of input power; in this standard P is determined from test).
LL LL
The nominal 50 Hz limits for Premium Efficie
...

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