IEC 60079-19:2010/AMD1:2015

Amendment 1 - Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation

Defines the distribution line message specification (DLMS) within the OSI application layer.

This publication is of high relevance for Smart Grid.

Amendement 1 - Atmosphères explosives - Partie 19: Réparation, révision et remise en état de l'appareil

Définit la spécification des messages de ligne de distribution (DLMS) au sein de la couche application de l'OSI.

General Information

• Status: Published
• Publication Date: 18-Mar-2015
• ICS: 29.240.20 - Power transmission and distribution lines
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: SC 31J - Classification of hazardous areas and installation requirements
• Drafting Committee: MT 60079-19 - TC 31/SC 31J/MT 60079-19
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 18-Oct-2019

Relations

• Amends: IEC 60079-19:2010 - Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
• Effective Date: 05-Sep-2023
• Revised: IEC 60079-19:2019 - Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60079-19


®


Edition 3.0 2015-03



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1

Explosive atmospheres –
Part 19: Equipment repair, overhaul and reclamation

Atmosphères explosives –
Partie 19: Réparation, révision et remise en état de l’appareil


IEC 60079-19:2010-11/AMD1:2015-03(en-fr)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED


Copyright © 2015 IEC, Geneva, Switzerland


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

your local IEC member National Committee for further information.



Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch

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.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].


A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.


Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.


Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 60 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].

---------------------- Page: 2 ----------------------
IEC 60079-19



®



Edition 3.0 2015-03







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE




A MENDMENT 1

AM ENDEMENT 1





Explosive atmospheres –

Part 19: Equipment repair, overhaul and reclamation




Atmosphères explosives –

Partie 19: Réparation, révision et remise en état de l’appareil

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.260.20 ISBN 978-2-8322-2433-5



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: 3 ----------------------
– 2 – IEC 60079-19:2010/AMD1:2015

© IEC 2015


FOREWORD


This amendment has been prepared by subcommittee 31J: Classification of hazardous areas

and installation requirements, of IEC technical committee 31: Explosive atmospheres.


The text of this amendment is based on the following documents:


FDIS Report on voting

31J/249/FDIS 31J/250/RVD



Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website 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.

_____________

2 Normative references
Add, after "IEC 60079-7, Explosive atmospheres – Part 7: Equipment protection by increased
safety "e"" the following new references:
IEC 60079-7:1990, Electrical apparatus for explosive gas atmospheres – Part 7: Increased
safety "e"

IEC 60079-7:2001, Electrical apparatus for explosive gas atmospheres – Part 7: Increased
safety "e"
Replace "IEC 60079-15, Explosive atmospheres – Part 15: Equipment protection by type of
protection "n"" with the following new references:
IEC 60079-15:2005, Electrical apparatus for explosive gas atmospheres – Part 15:
Construction, test and marking of type of protection "n" electrical apparatus
IEC 60079-15:2010, Explosive atmospheres – Part 15: Equipment protection by type of
protection "n"
8.2.4 Insulation
Replace the existing text of Subclause 8.2.4 by the following new text:

---------------------- Page: 4 ----------------------
IEC 60079-19:2010/AMD1:2015 – 3 –

© IEC 2015

Comprehensive details of the insulation system of windings, including the type of

impregnation varnish, are normally included in the certificate documentation. Where this does

not apply, full information shall be sought from the manufacturer or determined by detailed

inspection of the original winding.


8.2.6.1 General


Replace the existing text of Subclause 8.2.6.1 by the following new text:


The electrical construction of Type of Protection "e" equipment decisively influences the

explosion safety and the repairer shall be in full possession of the necessary information and

equipment. The whole of the winding shall be restored to the original condition except that a
partial winding replacement may be possible on larger equipment where this may be
practicable.
Replace the existing title and text of Subclause 8.2.6.1.1 by the following new text:
8.2.6.1.1 For machines with a rated voltage of 1 000 V or less; machines evaluated to
IEC 60079-7:1969, 1990 or 2001:
The following repair techniques are acceptable:
• stator windings replaced with those provided by the manufacturer;
• stator windings replaced based on manufacturer’s winding data;
• copy winding techniques;
The following winding data are required to be able to repair the stator winding and maintain
the original t :
E
a) type of winding – for example, single-layer, double-layer, etc.;
b) winding diagram;
c) number of turns/conductors/slot, parallel paths per phase;
d) interphase connections;
e) conductor size;
f) insulation system, including slot insulation and the generic varnish system or process such
as VPI or trickle;
g) measurement or calculation of resistance/phase or between terminals.
h) coil pitch
i) winding projection, including clearance between coils and enclosure

NOTE 1 Converter-fed motors are not protected using the concept of t , but are protected either with embedded
E
temperature sensors or by the inherent design of the converter.
Where copy rewind techniques are being used, all of the following are required:
a) Where there is a risk of damaging the core when stripping out the old winding, a core flux
test shall be conducted, at an appropriate value, such as 1,5 T (50 Hz) or 1,32 T (60 Hz),
before and after stripping winding to verify condition of core. The core losses after
stripping shall be no greater than 110 % of the core losses before stripping.
b) Removal of stator winding shall be by use of chemical stripping, controlled pyrololysis
(temperature controlled burn out) where the stator temperature does not exceed 370 °C or
cold stripping process.
c) The cross section area of the conductor shall be no less than the cross section area of the
original winding and not greater than 103 % of the cross section area of the original
winding.

---------------------- Page: 5 ----------------------
– 4 – IEC 60079-19:2010/AMD1:2015

© IEC 2015

d) The type of winding used on the original winding shall be used for the rewind – for

example, single-layer, double-layer, lap, concentric, etc.

e) The number of conductors/slot, and parallel paths per phase shall be as in the original

winding.


f) The mean length turn of the coil shall be no greater than the original winding coil or
preferably reduced.


g) The stator winding projection shall be the same as the original winding.

h) Embedded temperature sensors shall be fitted in the same location as the temperature

sensors in the original winding.

i) The generic varnish system process shall be the same as used in the original winding,

such as trickle epoxy resin, solvent free resin using VPI, or triple dip with pre-heating and
cure in resin with solvent
j) After impregnation but before curing, the stator bore shall be cleaned. This is in order to
minimise the need for stator bore cleaning after the stator winding is cured, which can
increase stray losses.
k) The resistance/phase or between terminals shall be within ± 5 % of the original winding.
NOTE 2 The EASA/AEMT Rewind Study titled The Effects of Repair/Rewinding on Motor Efficiency published by
EASA & AEMT provides additional information on Best Practice during rewinding & repair. This document is
available as a free download from www.easa.com or www.iecex.com.
Replace the existing title and text of Subclause 8.2.6.1.2 by the following new text:
8.2.6.1.2 For machines with a rated voltage of greater than 1 000 V; machines
evaluated to IEC 60079-7:1990 or 2001:
In addition to the revised requirements of 8.2.6.1.1:
Unless the insulation system has been previously subjected to the stator incendivity tests of
IEC 60079-7:1990 or 2001, the complete motor windings shall be subjected to the stator
incendivity tests of IEC 60079-7:1990 or 2001, as applicable.
NOTE 1 Equipment evaluated against the requirements of IEC 60079-7:1969 or 1990 was not subjected to
additional requirements for high-voltage machines. These machines, if returned to original condition, will likely only
comply with the requirements of the standard to which they were originally evaluated.
NOTE 2 Additional information on the evaluation of stator windings and insulation systems based on the IECEx
Decision Sheet DS2013/006 (available from www.iecex.com) can be found in Annex D.
9.2.6.1 General
Replace the existing text of Subclause 9.2.6.1 by the following new text:

The electrical construction of type of protection "n" equipment decisively influences the
explosion safety and the repairer shall be in full possession of the necessary information and
equipment. The whole of the winding shall be restored to the original condition except that a
partial winding replacement may be possible on larger equipment where this may be
practicable.
For machines evaluated to IEC 60079-15:1987 or 2001, one of the following repair options
shall be employed:
• stator windings replaced with those provided by the manufacturer;
• repair based on manufacturer’s winding data;
• copy winding technique, which includes determination of winding connections, conductor
size, turns, coil pitch, winding projection, and may include a determination of the original
coil resistance.

---------------------- Page: 6 ----------------------
IEC 60079-19:2010/AMD1:2015 – 5 –

© IEC 2015

For machines with a rated voltage of 1 000 V or less evaluated to IEC 60079-15:2005 or

2010, one of the following repair options shall be employed:


• stator windings replaced with those provided by the manufacturer;

• repair based on manufacturer’s winding data;

• copy winding technique, which includes determination of winding connections, conductor
size, turns, coil pitch, winding projection, and may include a determination of the original

coil resistance.


For machines with a rated voltage of greater than 1 000 V, one of the following repair options

shall be employed, ensuring that, unless the insulation system has been previously subjected

to the stator incendivity tests of IEC 60079-15:2005 or 2010, the motor windings shall be
subjected to the stator incendivity tests of IEC 60079-15:2005 or 2010. For
IEC 60079-15:2005, the end user has the option of advising that the risk factors used for the
original assessment against IEC 60079-15:2005 indicated a low potential for stator winding
discharge, and therefore the stator incendivity tests were not performed:
• stator windings replaced with those provided by the manufacturer;
• stator windings replaced based on manufacturer’s winding data;
• copy winding techniques.
The following winding data are required to be able to repair the stator winding and maintain
the original t :
E
a) type of winding – for example, single-layer, double-layer, etc.;
b) winding diagram;
c) number of turns/conductors/slot, parallel paths per phase;
d) interphase connections;
e) conductor size;
f) insulation system, including slot insulation and the generic varnish system or process
such as VPI or trickle;
g) measurement or calculation of resistance/phase or between terminals;
h) coil pitch;
i) winding projection, including clearance between coils and enclosure.
NOTE 1 Converter-fed motors are not protected using the concept of t , but are protected either with embedded
E
temperature sensors or by the inherent design of the converter.
Where copy rewind techniques are being used, all of the following are required:

a) A core flux test shall be conducted at an appropriate value, such as 1,5 T (50 Hz) or 1,32
T (60 Hz), before and after stripping winding to verify condition of core. The core losses
after stripping shall be no greater than 110 % of the core losses before stripping.
b) Removal of stator winding shall be by use of chemical stripping, controlled pyrololysis
(temperature controlled burn out) where the stator temperature does not exceed 370 °C or
cold stripping process.
c) The cross section area of the conductor shall be no less than the cross section area of the
original winding and not greater than 103 % of the cross section area of the original
winding.
d) The type of winding used on the original winding shall be used for the rewind – for
example, single-layer, double-layer, lap, concentric, etc.
e) The number of conductors/slot, and parallel paths per phase shall be as in the original
winding.
f) The mean length turn of the coil shall be no greater than the original winding coil or
preferably reduced.

---------------------- Page: 7 ----------------------
– 6 – IEC 60079-19:2010/AMD1:2015

© IEC 2015

g) The stator winding projection shall be the same as the original winding.

h) Embedded temperature sensors shall be fitted in the same location as the temperature

sensors in the original winding.


i) The generic varn
...