IEC 60137:2017
(Main)Insulated bushings for alternating voltages above 1000 V
Insulated bushings for alternating voltages above 1000 V
IEC 60137:2017 specifies the characteristics and tests for insulated bushings.
This standard is applicable to bushings, as defined in Clause 3, intended for use in electrical apparatus, machinery, transformers, switchgear and installations for three-phase alternating current systems, having highest voltage for equipment above 1 000 V and power frequencies of 15 Hz up to and including 60 Hz.
Subject to special agreement between purchaser and supplier, this standard may be applied, in part or as a whole, to the following:
- bushings used in other than three-phase systems;
- bushings for high-voltage direct current systems;
- bushings for testing transformers;
- bushings for capacitors.
Special requirements and tests for transformer bushings in this standard apply also to reactor bushings.
This standard is applicable to bushings made and sold separately. Bushings which are a part of an apparatus and which cannot be tested according to this standard should be tested with the apparatus of which they form part. This edition includes the following significant technical changes with respect to the previous edition:
- Resin-impregnated synthetic (RIS) bushings has been introduced.
- Bushings with Um ≤ 1,1 kV, Um = 1100 kV and Um = 1200 kV have been introduced.
- Temperature rise testing has been included for liquid-insulated bushings according to clause to 3.4.
- Introducing dry lightning impulse testing as a routine test for all transformer bushings with Um > 72,5 kV.
- The altitude correction procedure has been revised ( > 1 000 m).
- An explanation about Very Fast Transient (VFT) phenomenon and its impact on bushings has been included.
The contents of the corrigendum of May 2018 have been included in this copy.
Traversées isolées pour tensions alternatives supérieures à 1 000 V
L'IEC 60137:2017 spécifie les caractéristiques et les essais applicables aux traversées isolées.
La présente norme s'applique aux traversées, telles qu'elles sont définies à l’Article 3, destinées à être utilisées dans les dispositifs électriques, les machines, les transformateurs, les appareillages de connexion et les installations pour des systèmes à courant alternatif triphasé possédant une tension plus élevée pour le matériel dépassant 1 000 V et des fréquences industrielles comprises entre 15 Hz et 60 Hz (inclus).
Sous réserve d’un accord spécifique entre l’acheteur et le fournisseur, cette norme peut être appliquée, en partie ou en totalité, aux éléments suivants:
- traversées utilisées dans d’autres systèmes que ceux à courant alternatif triphasé;
- traversées pour les systèmes à courant continu haute tension;
- traversées pour les transformateurs d’essai;
- traversées pour les condensateurs.
Les exigences spéciales et les essais concernant les traversées de transformateurs spécifiées dans la présente norme s’appliquent également aux traversées pour bobines d'inductance. La présente norme s'applique aux traversées fabriquées et commercialisées séparément. Il convient que les traversées qui font partie intégrante d'un appareillage, et qui ne peuvent être soumises à l'essai selon la présente norme, soient soumises à l'essai avec l'appareillage dont elles font partie.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- Ajout de traversées en matière synthétique imprégnée de résine (RIS – resin-impregnated synthetics).
- Ajout de traversées dont Um ≤ 1,1 kV, Um = 1 100 kV et Um = 1 200 kV.
- Intégration de l'essai d'échauffement pour les traversées à isolation liquide selon 3.4.
- Ajout de l'essai de choc de foudre à sec en tant qu'essai individuel de série pour toutes les traversées de transformateurs dont Um > 72,5 kV.
- La procédure de correction d’altitude a été révisée ( > 1 000 m).
- Ajout d’une explication sur le phénomène des transitoires très rapides (VFT – Very Fast transient) et sur leur impact sur les traversées.
Le contenu du corrigendum de mai 2018 a été pris en considération dans cet exemplaire.
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IEC 60137 ®
Edition 7.0 2017-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Insulated bushings for alternating voltages above 1 000 V
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
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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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IEC 60137 ®
Edition 7.0 2017-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Insulated bushings for alternating voltages above 1 000 V
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.080.20 ISBN 978-2-8322-4517-0
– 2 – IEC 60137:2017 RLV IEC 2017
CONTENTS
FOREWORD . 7
INTRODUCTION . 2
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Ratings . 18
4.1 Standard values of Rated highest voltage for equipment (U ) . 18
m
4.2 Standard values of Rated current (I ) . 18
r
4.3 Standard values of Rated thermal short-time current (I ) . 18
th
4.4 Standard values of Rated dynamic current (I ) . 19
d
4.5 Minimum withstand values of cantilever load . 19
4.6 Angle of mounting . 20
4.7 Minimum nominal creepage distance . 20
4.8 Temperature limits and temperature rise . 21
4.9 Insulation levels . 21
4.10 Test tap on transformer bushings . 24
5 Operating conditions . 25
5.1 Temporary overvoltages. 25
5.2 Altitude . 25
5.3 Temperature of ambient air and immersion media . 27
5.4 Seismic conditions . 28
5.5 Very fast transients (VFT) . 28
5.6 Transformer insulating liquid . 29
6 Ordering information and markings . 29
6.1 Enumeration of characteristics . 29
6.1.1 General . 29
6.1.2 Application . 29
6.1.3 Classification of bushings . 29
6.1.4 Ratings . 29
6.1.5 Operating conditions . 29
6.1.6 Design . 30
6.2 Markings . 31
7 Test requirements . 32
7.1 General requirements . 33
7.2 Test classification . 33
7.2.1 General . 33
7.2.2 Type tests . 33
7.2.3 Routine tests . 34
7.2.4 Special tests . 35
7.3 Condition of bushings during dielectric and thermal tests . 35
8 Type tests . 2
8.1 General . 37
8.2 Dry or wet power-frequency voltage withstand test . 37
8.2.1 Applicability . 37
8.2.2 Test method and requirements . 37
8.2.3 Acceptance . 37
8.3 Long duration power-frequency voltage withstand test (ACLD) . 37
8.3.1 Applicability . 37
8.3.2 Test method and requirements . 37
8.3.3 Acceptance . 38
8.4 Dry lightning impulse voltage withstand test (BIL) . 38
8.4.1 Applicability . 38
8.4.2 Test method and requirements . 38
8.4.3 Acceptance . 39
8.5 Dry or wet switching impulse voltage withstand test (SIL) . 39
8.5.1 Applicability . 39
8.5.2 Test method and requirements . 39
8.5.3 Acceptance . 40
8.6 Thermal stability test . 41
8.6.1 Applicability . 41
8.6.2 Test method and requirements . 41
8.6.3 Acceptance . 41
8.7 Electromagnetic compatibility tests (EMC) . 42
8.7.1 Emission test . 42
8.7.2 Immunity test . 43
8.8 Temperature rise test . 43
8.8.1 Applicability . 43
8.8.2 Test method and requirements . 43
8.8.3 Acceptance . 44
8.9 Verification of thermal short-time current withstand . 44
8.9.1 Applicability . 44
8.9.2 Verification method and requirements . 44
8.9.3 Acceptance . 45
8.10 Cantilever load withstand test . 46
8.10.1 Applicability . 46
8.10.2 Test method and requirements . 46
8.10.3 Acceptance . 46
8.11 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings . 47
8.11.1 Applicability . 47
8.11.2 Test method and requirements . 47
8.11.3 Acceptance . 47
8.12 Internal pressure test on gas-filled, gas-insulated and gas-impregnated
bushings . 47
8.12.1 Applicability . 47
8.12.2 Test method and requirements . 47
8.12.3 Acceptance . 47
8.13 External pressure test on partly or completely gas-immersed bushings . 47
8.13.1 Applicability . 47
8.13.2 Test method and requirements . 48
8.13.3 Acceptance . 48
8.14 Verification of dimensions . 48
8.14.1 Applicability . 48
8.14.2 Acceptance . 48
9 Routine tests . 48
-------------------
...
IEC 60137 ®
Edition 7.0 2017-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulated bushings for alternating voltages above 1 000 V
Traversées isolées pour tensions alternatives supérieures à 1 000 V
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
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questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
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3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
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 20 000 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 - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 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.
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IEC 60137 ®
Edition 7.0 2017-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulated bushings for alternating voltages above 1 000 V
Traversées isolées pour tensions alternatives supérieures à 1 000 V
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.20 ISBN 978-2-8322-4417-3
– 2 – IEC 60137:2017 IEC 2017
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 12
4 Ratings . 18
4.1 Rated highest voltage for equipment (U ) . 18
m
4.2 Rated current (I ) . 18
r
4.3 Rated thermal short-time current (I ) . 18
th
4.4 Rated dynamic current (I ) . 19
d
4.5 Minimum withstand values of cantilever load . 19
4.6 Angle of mounting . 20
4.7 Minimum nominal creepage distance . 20
4.8 Temperature limits and temperature rise . 20
4.9 Insulation levels . 20
4.10 Test tap on transformer bushings . 23
5 Operating conditions . 23
5.1 Temporary overvoltages. 23
5.2 Altitude . 24
5.3 Temperature of ambient air and immersion media . 25
5.4 Seismic conditions . 25
5.5 Very fast transients (VFT) . 26
5.6 Transformer insulating liquid . 26
6 Ordering information and markings . 26
6.1 Enumeration of characteristics . 26
6.1.1 General . 26
6.1.2 Application . 26
6.1.3 Classification of bushings . 26
6.1.4 Ratings . 26
6.1.5 Operating conditions . 27
6.1.6 Design . 27
6.2 Markings . 28
7 Test requirements . 29
7.1 General requirements . 29
7.2 Test classification . 30
7.2.1 General . 30
7.2.2 Type tests . 30
7.2.3 Routine tests . 31
7.2.4 Special tests . 32
7.3 Condition of bushings during dielectric and thermal tests . 32
8 Type tests . 34
8.1 General . 34
8.2 Dry or wet power-frequency voltage withstand test . 34
8.2.1 Applicability . 34
8.2.2 Test method and requirements . 34
8.2.3 Acceptance . 34
8.3 Long duration power-frequency voltage withstand test (ACLD) . 34
8.3.1 Applicability . 34
8.3.2 Test method and requirements . 34
8.3.3 Acceptance . 35
8.4 Dry lightning impulse voltage withstand test . 35
8.4.1 Applicability . 35
8.4.2 Test method and requirements . 35
8.4.3 Acceptance . 36
8.5 Dry or wet switching impulse voltage withstand test . 36
8.5.1 Applicability . 36
8.5.2 Test method and requirements . 36
8.5.3 Acceptance . 37
8.6 Thermal stability test . 37
8.6.1 Applicability . 37
8.6.2 Test method and requirements . 38
8.6.3 Acceptance . 38
8.7 Electromagnetic compatibility tests (EMC) . 38
8.7.1 Emission test . 38
8.7.2 Immunity test . 40
8.8 Temperature rise test . 40
8.8.1 Applicability . 40
8.8.2 Test method and requirements . 40
8.8.3 Acceptance .
...
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