IEC 60034-14:2018

Rotating electrical machines - Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity

IEC 60034-14:2018 is now available as IEC 60034-14:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60034-14:2018 specifies the factory acceptance vibration test procedures and vibration limits for certain electrical machines under specified conditions, when uncoupled from any load or prime mover. It is applicable to DC and three-phase AC machines, with shaft heights 56 mm and higher and a rated output up to 50 MW, at operational speeds from 120 min–1 up to and including 15 000 min–1. This new edition includes the following significant technical changes with respect to the previous edition:
- Improved explanation of the definition “free suspension”.
- Addition of an alternative method of rigid mount
- Definition of an improved option for shaft key.

Machines électriques tournantes - Partie 14: Vibrations mécaniques de certaines machines de hauteur d'axe supérieure ou égale à 56 mm - Mesurage, évaluation et limites de l'intensité vibratoire

IEC 60034-14:2018 est disponible sous forme de IEC 60034-14:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L’IEC 60034-14:2018 spécifie les procédures d'essai d’acceptation de vibration en usine et les limites de vibration pour certaines machines électriques, dans des conditions spécifiées, sans être couplées à une charge ou à une machine entraînée. Elle est applicable aux machines à courant continu et aux machines triphasées à courant alternatif de hauteur d'axe supérieure ou égale à 56 mm et de puissance assignée inférieure ou égale à 50 MW, à des vitesses de fonctionnement de 120 min–1 jusqu'à et y compris 15 000 min–1. Cette nouvelle édition inclue les modifications techniques majeures suivantes par rapport à l’édition précédente:
- Meilleure explication de la définition «suspension libre».
- Ajout d’une méthode alternative de montage rigide.
- Définition d’option améliorée pour les clavettes d’arbre.

[Not translated]

General Information

• Status: Published
• Publication Date: 16-Aug-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: MT 7 - TC 2/MT 7
• Current Stage: PPUB - Publication issued
• Start Date: 03-Aug-2018
• Completion Date: 17-Aug-2018
• Ref Project: SIST IEC 60034-14 Ed. 4.0:2018 - Rotating electrical machines - Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity

Relations

• Revises: IEC 60034-14:2003/AMD1:2007 - Amendment 1 - Rotating electrical machines - Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity
• Effective Date: 05-Sep-2023
• Revises: IEC 60034-14:2003 - Rotating electrical machines - Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60034-14 ®
Edition 4.0 2018-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Rotating electrical machines –
Part 14: Mechanical vibration of certain machines with shaft heights 56 mm
and higher – Measurement, evaluation and limits of vibration severity

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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latest edition, a corrigenda or an amendment might have been published.

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IEC 60034-14 ®
Edition 4.0 2018-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Rotating electrical machines –

Part 14: Mechanical vibration of certain machines with shaft heights 56 mm

and higher – Measurement, evaluation and limits of vibration severity

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.160.01 ISBN 978-2-8322-5995-5

– 2 – IEC 60034-14:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Measurement quantities . 7
4.1 General . 7
4.2 Vibration magnitude . 7
4.3 Relative shaft vibration . 7
5 Measurement equipment . 7
6 Machine mounting . 8
6.1 General . 8
6.2 Free suspension . 8
6.3 Rigid mounting . 8
6.3.1 Foundation . 8
6.3.2 Horizontal machines . 9
6.3.3 Vertical machines . 10
6.4 Active environment determination . 10
7 Conditions of measurement. 10
7.1 Key . 10
7.2 Measurement positions and directions . 10
7.2.1 Measurement positions for vibration . 10
7.2.2 Measurement positions for relative shaft displacement . 10
7.3 Test conditions . 11
7.4 Vibration transducer . 11
8 Limits of bearing housing vibration . 11
8.1 Limits of vibration magnitude . 11
8.2 Limits of vibration velocity with twice-line frequency for a.c. machines . 13
8.3 Axial vibration . 13
9 Limits of relative shaft vibration . 13
Bibliography . 20

Figure 1 – Minimum elastic displacement as a function of rated speed . 15
Figure 2 – Preferred positions of measurement applicable to one or both ends of the
machine . 16
Figure 3 – Measurement positions for those ends of machines where measurements
according to Figure 2 are not possible without disassembly of parts . 16
Figure 4 – Measurement positions for pedestal bearing . 17
Figure 5 – Preferred circumferential position of transducers for the measurement of
relative shaft displacement . 17
Figure 6 – Measurement positions for vertical machines (measurements to be made at
the bearing housing; when not accessible, then as close as possible) . 18
Figure 7 – Vibration limit diagram for shaft heights H > 132 mm . 19

Table 1 – Limits of maximum vibration magnitude in displacement (r.m.s.) and
velocity (r.m.s.) and acceleration (r.m.s.) for shaft height H. 12

Table 2 – Limits for the maximum shaft vibration (S ) and the maximum run-out . 14
p-p
– 4 – IEC 60034-14:2018 RLV © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –

Part 14: Mechanical vibration of certain machines
with shaft heights 56 mm and higher – Measurement,
evaluation and limits of vibration severity

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.
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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
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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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

International Standard IEC 60034-14 has been prepared by IEC technical committee 2:
Rotating machinery.
This fourth edition cancels and replaces the third edition, published in 2003, and its
amendment 1, published in 2007. It constitutes a technical revision.
The significant technical changes with respect to the previous edition are:
a) 6.2 is significantly changed to better explain the definition “free suspension”.
b) 6.3: a second method of rigid mount is added since the first method is not always possible
on the test floor.
c) 7.1: an improved option for shaft key is defined.
d) Clause 8: considerable effort to harmonize with NEMA MG 1 and IEEE 841 and API 541,
and also establish levels which are achievable and more in line with best practices.
Table 1 is reduced to two shaft-height range sections.
e) 8.2: definition of twice line frequency simplified along with Figure 7 added.
The text of this International Standard is based on the following documents:
FDIS Report on voting
2/1906/FDIS 2/1914/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60034 series, published under the general title Rotating electrical
machines, can be found on the IEC website.
NOTE For A table of cross-references of all IEC TC 2 publications can be found in the IEC TC 2 dashboard on the
IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publi
...

IEC 60034-14 ®
Edition 4.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –
Part 14: Mechanical vibration of certain machines with shaft heights 56 mm
and higher – Measurement, evaluation and limits of vibration severity

Machines électriques tournantes –
Partie 14: Vibrations mécaniques de certaines machines de hauteur d’axe
supérieure ou égale à 56 mm – Mesurage, évaluation et limites de l’intensité
vibratoire
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
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committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 60034-14 ®
Edition 4.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –

Part 14: Mechanical vibration of certain machines with shaft heights 56 mm

and higher – Measurement, evaluation and limits of vibration severity

Machines électriques tournantes –

Partie 14: Vibrations mécaniques de certaines machines de hauteur d’axe

supérieure ou égale à 56 mm – Mesurage, évaluation et limites de l’intensité

vibratoire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-5902-3

– 2 – IEC 60034-14:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Measurement quantities . 7
4.1 General . 7
4.2 Vibration magnitude . 7
4.3 Relative shaft vibration . 7
5 Measurement equipment . 7
6 Machine mounting . 8
6.1 General . 8
6.2 Free suspension . 8
6.3 Rigid mounting . 8
6.3.1 Foundation . 8
6.3.2 Horizontal machines . 9
6.3.3 Vertical machines . 9
6.4 Active environment determination . 9
7 Conditions of measurement. 10
7.1 Key . 10
7.2 Measurement positions and directions . 10
7.2.1 Measurement positions for vibration . 10
7.2.2 Measurement positions for relative shaft displacement . 10
7.3 Test conditions . 10
7.4 Vibration transducer . 10
8 Limits of bearing housing vibration . 11
8.1 Limits of vibration magnitude . 11
8.2 Limits of vibration velocity with twice-line frequency for a.c. machines . 12
8.3 Axial vibration . 12
9 Limits of relative shaft vibration . 12
Bibliography . 18

Figure 1 – Minimum elastic displacement as a function of rated speed . 13
Figure 2 – Preferred positions of measurement applicable to one or both ends of the
machine . 14
Figure 3 – Measurement positions for those ends of machines where measurements
according to Figure 2 are not possible without disassembly of parts . 14
Figure 4 – Measurement positions for pedestal bearing . 15
Figure 5 – Preferred circumferential position of transducers for the measurement of
relative shaft displacement . 15
Figure 6 – Measurement positions for vertical machines (measurements to be made at
the bearing housing; when not accessible, then as close as possible) . 16
Figure 7 – Vibration limit diagram for shaft heights H > 132 mm . 17

Table 1 – Limits of maximum vibration magnitude in displacement (r.m.s.) and
velocity (r.m.s.) for shaft height H . 11

Table 2 – Limits for the maximum shaft vibration (S ) and the maximum run-out . 13
p-p
– 4 – IEC 60034-14:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –

Part 14: Mechanical vibration of certain machines
with shaft heights 56 mm and higher – Measurement,
evaluation and limits of vibration severity

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 certific
...