EN IEC 60072-1:2022

SLOVENSKI STANDARD
01-oktober-2022
Električni rotacijski stroji - Dimenzije in izhodne serije - 1. del: Velikosti ohišij od
56 do 400 in velikosti prirobnic od 55 do 1080 (IEC 60072-1:2022)
Rotating electrical machines - Dimensions and output series - Part 1: Frame numbers 56
to 400 and flange numbers 55 to 1080 (IEC 60072-1:2022)
Abmessungen und Leistungsreihen für drehende elektrische Maschinen - Teil 1:
Baugrößen 56 bis 400 und Flanschgrößen 55 bis 1080 (IEC 60072-1:2022)
Machines électriques tournantes - Dimensions et séries de puissances - Partie 1:
Désignation des carcasses entre 56 et 400 et des brides entre 55 et 1080 (IEC 60072-
1:2022)
Ta slovenski standard je istoveten z: EN IEC 60072-1:2022
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60072-1

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 29.160.01 Supersedes EN 50347:2001
English Version
Rotating electrical machines - Dimensions and output series -
Part 1: Frame numbers 56 to 400 and flange numbers 55 to
(IEC 60072-1:2022)
Machines électriques tournantes - Dimensions et séries de Abmessungen und Leistungsreihen für drehende
puissances - Partie 1: Désignation des carcasses entre 56 elektrische Maschinen - Teil 1: Baugrößen 56 bis 400 und
et 400 et des brides entre 55 et 1080 Flanschgrößen 55 bis 1080
(IEC 60072-1:2022) (IEC 60072-1:2022)
This European Standard was approved by CENELEC on 2022-05-04. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60072-1:2022 E

European foreword
The text of document 2/2059/CDV, future edition 7 of IEC 60072-1, prepared by IEC/TC 2 "Rotating
machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-02-04
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-05-04
document have to be withdrawn
This document supersedes EN 50347:2001 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60072-1:2022 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 60034-7 NOTE Harmonized as EN IEC 60034-7
IEC 60079-1 NOTE Harmonized as EN 60079-1
IEC 60079-7 NOTE Harmonized as EN 60079-7
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 60079-0 - Explosive atmospheres - Part 0: EN IEC 60079-0 -
Equipment - General requirements
ISO 128-3 2020 Technical product documentation (TPD) - EN ISO 128-3 2020
General principles of representation - Part
3: Views, sections and cuts
ISO 273 - Fasteners - Clearance holes for bolts and EN 20273 -
screws
ISO 286 series Geometrical product specifications (GPS) - EN ISO 286 series
ISO code system for tolerances on linear
sizes
ISO 1101 - Geometrical product specifications (GPS) - EN ISO 1101 -
Geometrical tolerancing - Tolerances of
form, orientation, location and run-out
ISO 2768-1 - General tolerances - Part 1: Tolerances for - -
linear and angular dimensions without
individual tolerance indications

IEC 60072-1 ®
Edition 7.0 2022-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines – Dimensions and output series –

Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080

Machines électriques tournantes –Dimensions et séries de puissances –

Partie 1: Désignation des carcasses entre 56 et 400 et des brides

entre 55 et 1080
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-1093-0

– 2 – IEC 60072-1:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols . 7
4.1 Letter symbols for dimensions . 7
4.2 Dimensional sketches . 9
5 Designations of machines . 10
5.1 Frame sizes . 10
5.2 Flange numbers . 10
5.3 Shaft extension . 10
6 Location of the terminal box . 10
6.1 Machines with feet . 10
6.2 Machines without feet . 10
7 Fixing dimensions and tolerances . 11
7.1 General . 11
7.2 Foot-mounted machines . 11
7.3 Flange-mounted machines . 12
8 Shaft end dimensions and tolerances . 13
8.1 Shaft end dimenions . 13
8.2 Parallelism of shaft to foot face . 16
8.3 Parallelism of keyway to shaft axis . 16
8.4 Lateral displacement of keyway . 16
9 Methods of measurement . 16
9.1 General . 16
9.2 Shaft extensions run-out . 17
9.3 Concentricity of spigot and shaft . 17
9.4 Perpendicularity of mounting face of flange to shaft . 17
9.5 Parallelism of shaft to foot face . 18
9.6 Parallelism of keyway to shaft axis . 19
9.7 Lateral displacement of keyway . 19
10 Preferred rated output values . 19
11 Relationships between frame size, shaft extensions, rated outputs and flange
numbers . 21
Annex A (informative) Additional relationships for frame sizes and output ratings . 24
Annex B (informative) Additional recommended letters and dimensions . 25
Bibliography . 26

Figure 1 – Dimensional sketches . 9
Figure 2 – Illustration of the measurement of shaft extensions run-out . 17
Figure 3 – Illustration of the measurement of concentricity . 17
Figure 4 – Illustration of the measurement of perpendicularity . 18
Figure 5 – Illustration of the measurement of parallelism . 18
Figure 6 – Illustration of parallelism of keyway . 19
Figure 7 – Illustration of lateral displacement of keyway . 19

IEC 60072-1:2022 © IEC 2022 – 3 –
Table 1 – Dimensions for machines with shaft height from 56 mm to 400 mm . 11
Table 2 – Dimensions and tolerances for flanges with pitch circle diameters from 55
mm to 1 080 mm . 12
Table 3 – Dimensions and tolerances for shaft ends . 14
Table 4 – Tolerance for parallelism shaft to foot face . 16
Table 5 – Tolerance for parallelism of keyway to shaft axis . 16
Table 6 – Preferred rated output values . 20
Table 7 – Totally enclosed fan-cooled induction motors (IC41) with squirrel-cage rotor . 21
Table 8 – Totally enclosed fan cooled induction motors (IC41) with slip ring rotor . 22
Table 9 – Ventilated induction motors (IC01) with squirrel-cage rotor . 23
Table 10 – Ventilated induction motors (IC01) with slip ring rotor . 23
Table A.1 – Relationships between frame size and rated output for 50 Hz increased
safety "eb" . 24
Table B.1 – Additional frame letters and B dimensions in mm . 25

– 4 – IEC 60072-1:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
DIMENSIONS AND OUTPUT SERIES –

Part 1: Frame numbers 56 to 400 and flange
numbers 55 to 1080
FORE
...