IEC 60034-30:2008

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.

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.

General Information

• Status: Replaced
• Publication Date: 20-Oct-2008
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: WG 31 - TC 2/WG 31
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 06-Mar-2014

Relations

• Replaced By: IEC 60034-30-1:2014 - Rotating electrical machines - Part 30-1: Efficiency classes of line operated AC motors (IE code)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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)
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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
Q
CODE PRIX
ICS 29.160 ISBN 978-2-88910-022-4
– 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

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
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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.

– 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.
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
...