IEC/IEEE 60079-30-1:2015
(Main)Explosive atmospheres - Part 30-1: Electrical resistance trace heating - General and testing requirements
Explosive atmospheres - Part 30-1: Electrical resistance trace heating - General and testing requirements
IEC/IEEE 60079-30-1:2015 specifies general and testing requirements for electrical resistance trace heaters for application in explosive atmospheres with the exclusion of those for EPL Ga and Da. This standard covers trace heaters that comprise either factory or field (work-site) assembled units, and which may be series trace heaters, parallel trace heaters, trace heater pads, or trace heater panels that have been assembled and/or terminated in accordance with the manufacturer's instructions. This standard also includes requirements for termination assemblies and control methods used with trace heating systems. The explosive atmospheres referred to in this standard are those defined in IEC 60079-10-1 and IEC 60079-10-2. Annexes D and E outline the application of this standard for those users applying the Division method of area classification. This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1 (refer to Clause 1 - Scope of the document). Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. This first edition of IEC/IEEE 60079-30-1 cancels and replaces the first edition of IEC 60079-30-1 published in 2007 and constitutes a technical revision. This edition includes the following significant changes, apart from the general revision and updating of the first edition of IEC 60079-30-1 and harmonization with IEEE Std.515, with respect to the previous edition:
- the inclusion of a minimum temperature impact test;
- the addition of a mechanical procedure in the thermal stability test;
- the inclusion of a thermal performance test to replace the thermal safety requirements;
- the inclusion of a second procedure utilizing a plate fixture for sheath temperature determination;
- the inclusion of an ultraviolet and condensation test;
- the revision and significant expansion of documentation requirements;
- the addition of Annexes covering requirements for Divisions 1 and 2;
- the addition of a table covering the applicability of requirements from IEC 60079-0;
- the addition of an Annex covering trace heater product design verification methodology (formerly located in IEC 60079-30-2);
- the further harmonization of this edition with several national standards. Please refer to the Foreword of the document for the significance of changes between IEC 60079-30-1, Edition 1.0 (2007) and IEC/IEEE 60079-30-1, Edition 1.0 (2015). Keywords: electric surface heating equipment used in explosive atmospheres, equipment protection levels Gb, Gc, Db, and Dc
Atmosphères explosives - Partie 30-1: Traçage par résistance électrique - Exigences générales et d'essais
IEC/IEEE 60079-30-1:2015 spécifie les exigences générales et d'essai des résistances électriques de traçage pour une application en atmosphères explosives, à l'exclusion de celles pour les EPL Ga et Da. La présente norme s’applique aux résistances de traçage composées d'unités assemblées en usine ou sur site (site d’exploitation) et qui peuvent être des résistances de traçage en série, des résistances de traçage en parallèle, des bandes de traçage ou des panneaux de traçage qui ont été assemblés et/ou équipés de terminaisons conformément aux instructions du constructeur.
La présente norme comprend aussi des exigences concernant les ensembles de terminaisons et les méthodes de contrôle appliquées aux systèmes de traçage. Les atmosphères explosives désignées dans la présente norme sont celles définies dans l'IEC 60079-10-1 et l'IEC 60079-10-2.
Les Annexes D et E présentent l’application de la présente norme pour les utilisateurs qui appliquent la méthode de classement des emplacements par division.
La présente norme complète et modifie les exigences générales de l'IEC 60079-0, sauf pour ce qui est indiqué au Tableau 1. Lorsqu’une exigence de la présente norme est en conflit avec une exigence de l'IEC 60079-0, l’exigence de la présente norme prévaut Cette première édition annule et remplace la première édition de l'IEC 60079-30-1 parue en 2007. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes, hormis la révision générale et la mise à jour de la première édition de l'IEC 60079-30-1 et de l'harmonisation avec la norme IEEE 515, par rapport à l'édition précédente:
• inclusion d'un essai de choc à température minimale;
• addition d'une procédure mécanique dans l'essai de stabilité thermique;
• inclusion d'un essai des performances thermiques pour remplacer les exigences de sécurité thermique;
• inclusion d'une seconde procédure utilisant un appareil à plaque pour déterminer la température de la gaine;
• inclusion d'un essai aux ultraviolets et de condensation;
• révision et extension significative des exigences de documentation;
• addition des Annexes couvrant les exigences des divisions 1 et 2;
• addition d'un tableau couvrant l'applicabilité des exigences de l'IEC 60079-0;
• addition d'une Annexe couvrant la méthode de vérification de la conception des résistances de traçage (auparavant abordée dans l'IEC 60079-30-2);
• harmonisation de la présente édition avec plusieurs normes nationales.
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IEC/IEEE 60079-30-1 ®
Edition 1.0 2015-09
INTERNATIONAL
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Explosive atmospheres –
Part 30-1: Electrical resistance trace heating – General and testing requirements
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 being
secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEC’s
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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 the IEEE
IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for
the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications,
conferences, technology standards, and professional and educational activities.
About IEC/IEEE publications
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that you have the latest edition, a corrigendum or an amendment might have been published.
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IEC/IEEE 60079-30-1 ®
Edition 1.0 2015-09
INTERNATIONAL
STANDARD
colour
inside
Explosive atmospheres –
Part 30-1: Electrical resistance trace heating – General and testing requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.260.20 ISBN 978-2-8322-2758-9
– 2 – IEC/IEEE 60079-30-1:2015
© IEC/IEEE 2015
CONTENTS
FOREWORD . 5
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 15
3 Terms and definitions . 16
4 General requirements . 22
4.1 General . 22
4.2 Mechanical strength . 22
4.3 Terminations and connections . 23
4.4 Circuit protection requirements for branch circuits. 23
4.5 Temperature requirements . 23
4.5.1 General . 23
4.5.2 Stabilized design . 24
4.5.3 Controlled design. 24
5 Testing . 26
5.1 Type tests . 26
5.1.1 General . 26
5.1.2 Dielectric test . 26
5.1.3 Electrical insulation resistance test . 27
5.1.4 Flammability test . 27
5.1.5 Impact tests . 29
5.1.6 Deformation test . 32
5.1.7 Cold bend test . 32
5.1.8 Water resistance test . 33
5.1.9 Integral components resistance to water test . 33
5.1.10 Verification of rated output . 34
5.1.11 Thermal stability of electrical insulating material . 36
5.1.12 Thermal performance test . 36
5.1.13 Determination of maximum sheath temperature . 38
5.1.14 Verification of start-up current . 46
5.1.15 Verification of the electrical resistance of electrically conductive
covering . 46
5.1.16 Outdoor exposure test . 47
5.2 Routine tests. 47
5.2.1 Dielectric test . 47
5.2.2 Verification of rated output . 47
6 Marking . 47
6.1 Product markings for trace heaters . 47
6.2 Markings for field assembled components . 48
7 Documentation requirements . 48
7.1 General . 48
7.2 Circuit design documentation . 48
7.3 Trace heating system documentation . 49
7.3.1 General . 49
© IEC/IEEE 2015
7.3.2 For trace heating systems according to the product classification
method . 49
7.3.3 For trace heating systems according to stabilized design method . 49
7.3.4 For trace heating systems according to controlled design method . 49
7.4 Instructions for installation of trace heating system . 50
7.5 Instructions for commissioning . 50
7.6 Instructions for maintenance / repair or modification . 50
Annex A (informative) Type test matrix for EPLs Gb/Gc/Db/Dc (Refer to IEC 60079-14
for the relationship of EPLs to Zones) . 52
Annex B (informative) Checklist for installation . 53
Annex C (normative) Trace heater product design verification methodology . 54
C.1 General . 54
C.2 Design methodology and selection of trace heaters . 54
C.3 Stabilized design calculations . 54
C.4 Trace heater performance and equilibrium conditions . 55
C.5 Heat loss calculations . 57
C.6 Heat loss design safety factor . 58
C.7 Maximum temperature determination . 58
C.7.1 Theoretical pipe and sheath temperature calculations – Metallic
applications . 58
C.7.2 Theoretical vessel and sheath temperature calculations – Metallic
applications . 59
C.7.3 Sheath temperature – metallic applications utilizing a temperature
limiter control sensing the trace heater sheath or an artificial hot spot . 60
C.7.4 Theoretical sheath temperature calculations – Non-metallic applications . 60
C.7.5 Sheath temperature – non-metallic applications utilizing a temperature
limiter control sensing the trace heater sheath or an artificial hot spot . 62
Annex D (normative) Requirements for Division 1 and Division 2 trace heating
systems . 63
D.1 Application . 63
D.2 General . 63
D.3 Terminations and connections . 63
D.4 Control and temperature requirements . 63
D.4.1 General . 63
D.4.2 Stabilized design . 63
D.4.3 Controlled design. 64
D.4.4 Requirements for protective device in Divisions 1 and 2 . 64
D.5 Type tests . 64
D.5.1 Division 1 trace heating equipment . 64
D.5.2 Division 2 equipment . 65
D.6 Marking . 65
D.7 Instructions – Installation requirements . 65
Annex E (normative) Type test matrix for Division 1 and 2 explosive atmospheres . 67
Bibliography . 69
Figure 1 – Flammability test . 28
Figure 2 – Example of room temperature impact test . 30
Figure 3 – Example of minimum temperature impact test . 31
Figure 4 – Cold bend test . 33
– 4 – IEC/IEEE 60079-30-1:2015
© IEC/IEEE 2015
Figure 5 – Integral c
...
IEC/IEEE 60079-30-1 ®
Edition 1.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Explosive atmospheres –
Part 30-1: Electrical resistance trace heating – General and testing requirements
Atmosphères explosives –
Partie 30-1: Traçage par résistance électrique – Exigences générales et d’essais
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 being
secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEC’s
member National Committee in the country of the requester or from IEEE.
IEC Central Office Institute of Electrical and Electronics Engineers, Inc.
3, rue de Varembé 3 Park Avenue
CH-1211 Geneva 20 New York, NY 10016-5997
Switzerland United States of America
Tel.: +41 22 919 02 11 stds.ipr@ieee.org
info@iec.ch www.ieee.org
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 the IEEE
IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for
the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications,
conferences, technology standards, and professional and educational activities.
About IEC/IEEE publications
The technical content of IEC/IEEE publications is kept under constant review by the IEC and IEEE. Please make sure
that you have the latest edition, a corrigendum 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 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.
IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
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
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: sales@iec.ch.
IEC/IEEE 60079-30-1 ®
Edition 1.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Explosive atmospheres –
Part 30-1: Electrical resistance trace heating – General and testing requirements
Atmosphères explosives –
Partie 30-1: Traçage par résistance électrique – Exigences générales et d’essais
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.260.20 ISBN 978-2-8322-5548-3
– 2 – IEC/IEEE 60079-30-1:2015
© IEC/IEEE 2015
CONTENTS
FOREWORD . 5
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 15
3 Terms and definitions . 16
4 General requirements . 22
4.1 General . 22
4.2 Mechanical strength . 22
4.3 Terminations and connections . 23
4.4 Circuit protection requirements for branch circuits. 23
4.5 Temperature requirements . 23
4.5.1 General . 23
4.5.2 Stabilized design . 24
4.5.3 Controlled design. 24
5 Testing . 26
5.1 Type tests . 26
5.1.1 General . 26
5.1.2 Dielectric test . 26
5.1.3 Electrical insulation resistance test . 27
5.1.4 Flammability test . 27
5.1.5 Impact tests . 29
5.1.6 Deformation test . 32
5.1.7 Cold bend test . 32
5.1.8 Water resistance test . 33
5.1.9 Integral components resistance to water test . 33
5.1.10 Verification of rated output . 34
5.1.11 Thermal stability of electrical insulating material . 36
5.1.12 Thermal performance test . 36
5.1.13 Determination of maximum sheath temperature . 38
5.1.14 Verification of start-up current . 46
5.1.15 Verification of the electrical resistance of electrically conductive
covering . 46
5.1.16 Outdoor exposure test . 47
5.2 Routine tests. 47
5.2.1 Dielectric test . 47
5.2.2 Verification of rated output . 47
6 Marking . 47
6.1 Product markings for trace heaters . 47
6.2 Markings for field assembled components . 48
7 Documentation requirements . 48
7.1 General . 48
7.2 Circuit design documentation . 48
7.3 Trace heating system documentation . 49
7.3.1 General . 49
© IEC/IEEE 2015
7.3.2 For trace heating systems according to the product classification
method . 49
7.3.3 For trace heating systems according to stabilized design method . 49
7.3.4 For trace heating systems according to controlled design method . 49
7.4 Instructions for installation of trace heating system . 50
7.5 Instructions for commissioning . 50
7.6 Instructions for maintenance / repair or modification . 50
Annex A (informative) Type test matrix for EPLs Gb/Gc/Db/Dc (Refer to IEC 60079-14
for the relationship of EPLs to Zones) . 52
Annex B (informative) Checklist for installation . 53
Annex C (normative) Trace heater product design verification methodology . 54
C.1 General . 54
C.2 Design methodology and selection of trace heaters . 54
C.3 Stabilized design calculations . 54
C.4 Trace heater performance and equilibrium conditions . 55
C.5 Heat loss calculations . 57
C.6 Heat loss design safety factor . 58
C.7 Maximum temperature determination . 58
C.7.1 Theoretical pipe and sheath temperature calculations – Metallic
applications . 58
C.7.2 Theoretical vessel and sheath temperature calculations – Metallic
applications . 59
C.7.3 Sheath temperature – metallic applications utilizing a temperature
limiter control sensing the trace heater sheath or an artificial hot spot . 60
C.7.4 Theoretical sheath temperature calculations – Non-metallic applications . 60
C.7.5 Sheath temperature – non-metallic applications utilizing a temperature
limiter control sensing the trace heater sheath or an artificial hot spot . 62
Annex D (normative) Requirements for Division 1 and Division 2 trace heating
systems . 63
D.1 Application . 63
D.2 General . 63
D.3 Terminations and connections . 63
D.4 Control and temperature requirements . 63
D.4.1 General . 63
D.4.2 Stabilized design . 63
D.4.3 Controlled design. 64
D.4.4 Requirements for protective device in Divisions 1 and 2 . 64
D.5 Type tests . 64
D.5.1 Division 1 trace heating equipment . 64
D.5.2 Division 2 equipment . 65
D.6 Marking . 65
D.7 Instructions – Installation requirements . 65
Annex E (normative) Type test matrix for Division 1 and 2 explosive atmospheres . 67
Bibliography . 69
Figure 1 – Flammability test . 28
Figure 2 – Example of room temperature impact test .
...
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