SIST EN 60137:2018

SLOVENSKI STANDARD
SIST EN 60137:2018
01-februar-2018
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SIST EN 60137:2008
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Insulated bushings for alternating voltages above 1 000 V
Isolierte Durchführungen für Wechselspannungen über 1 000 V
Traversées isolées pour tensions alternatives supérieures à 1 000 V
Ta slovenski standard je istoveten z: EN 60137:2017
ICS:
29.080.20 Skoznjiki Bushings
SIST EN 60137:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60137:2018

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SIST EN 60137:2018


EUROPEAN STANDARD EN 60137

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2017
ICS 29.080.20 Supersedes EN 60137:2008
English Version
Insulated bushings for alternating voltages above 1 000 V
(IEC 60137:2017)
Traversées isolées pour tensions alternatives supérieures à Isolierte Durchführungen für Wechselspannungen über
1 000 V 1 000 V
(IEC 60137:2017) (IEC 60137:2017)
This European Standard was approved by CENELEC on 2017-07-27. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60137:2017 E

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SIST EN 60137:2018
EN 60137:2017

European foreword
The text of document 36A/187/FDIS, future edition 7 of IEC 60137, prepared by SC 36A "Insulated
Bushings" of IEC/TC 36 "Insulators" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN 60137:2017.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-05-17
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-11-17
• latest date by which the national
standards conflicting with the
document have to be withdrawn

This document supersedes EN 60137:2008.

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.

Endorsement notice
The text of the International Standard IEC 60137:2017 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 60076-1 NOTE Harmonized as EN 60076-1.
IEC 60076-2 NOTE Harmonized as EN 60076-2.
IEC 60076-3 NOTE Harmonized as EN 60076-3.
IEC 60507 NOTE Harmonized as EN 60507.
IEC 60836 NOTE Harmonized as EN 60836.
IEC 60867 NOTE Harmonized as EN 60867.
IEC 62271-203:2011 NOTE Harmonized as EN 62271-203:2012 (not modified).
IEC 62271-211:2014 NOTE Harmonized as EN 62271-211:2014 (not modified).
2

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SIST EN 60137:2018
EN 60137:2017
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 60038 (mod) -  IEC standard voltages EN 60038 -
IEC 60050-212 2010 International Electrotechnical Vocabulary - - -
Part-212: Electrical insulating solids, liquids
and gases
IEC 60059 -  IEC standard current ratings EN 60059 -
IEC 60060-1 -  High-voltage test techniques - Part 1: EN 60060-1 -
General definitions and test requirements
IEC 60068-2-17 1994 Basic environmental testing procedures - EN 60068-2-17 1994
Part 2-17: Tests - Test Q: Sealing
IEC 60071-1 -  Insulation co-ordination - Part 1: Definitions, EN 60071-1 -
principles and rules
IEC 60076-5 -  Power transformers - Part 5: Ability to EN 60076-5 -
withstand short circuit
IEC 60076-7 -  Power transformers - Part 7: Loading guide - -
for oil-immersed power transformers
IEC 60216-2 -  Electrical insulating materials - Thermal EN 60216-2 -
endurance properties - Part 2: Determination
of thermal endurance properties of electrical
insulating materials - Choice of test criteria
IEC 60270 -  High-voltage test techniques - Partial EN 60270 -
discharge measurements
IEC 60296 -  Fluids for electrotechnical applications - EN 60296 -
Unused mineral insulating oils for
transformers and switchgear
IEC 60376 -  Specification of technical grade sulfur EN 60376 -
hexafluoride (SF6) for use in electrical
equipment
IEC 60422 -  Mineral insulating oils in electrical equipment EN 60422 -
- Supervision and maintenance guidance
IEC 60480 -  Guidelines for the checking and treatment of EN 60480 -
sulphur hexafluoride (SF6) taken from
electrical equipment and specification for its
re-use
IEC 60505 -  Evaluation and qualification of electrical EN 60505 -
insulation systems
IEC 61099 -  Insulating liquids - Specifications for unused EN 61099 -
synthetic organic esters for electrical
purposes
3

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SIST EN 60137:2018
EN 60137:2017
IEC 61462 -  Composite hollow insulators - Pressurized EN 61462 -
and unpressurized insulators for use in
electrical equipment with rated voltage
greater than 1 000 V - Definitions, test
methods, acceptance criteria and design
recommendations
IEC 62155 (mod) 2003 Hollow pressurized and unpressurized EN 62155 2003
ceramic and glass insulators for use in
electrical equipment with rated voltages
greater than 1 000 V
IEC 62217 -  Polymeric HV insulators for indoor and EN 62217 -
outdoor use - General definitions, test
methods and acceptance criteria
IEC 62271-1 -  High-voltage switchgear and controlgear - EN 62271-1 -
Part 1: Common specifications
IEC Guide 109 -  Environmental aspects - Inclusion in - -
electrotechnical product standards
IEC/TS 60815-1 -  Selection and dimensioning of high-voltage - -
insulators intended for use in polluted
conditions - Part 1: Definitions, information
and general principles
IEC/TS 60815-2 -  Selection and dimensioning of high-voltage - -
insulators intended for use in polluted
conditions - Part 2: Ceramic and glass
insulators for a.c. systems
IEC/TS 60815-3 -  Selection and dimensioning of high-voltage - -
insulators intended for use in polluted
conditions - Part 3: Polymer insulators for
a.c. systems
CISPR 16-1 series Specification for radio disturbance and EN 55016-1 series
immunity measuring apparatus and methods
CISPR 18-2 -  Radio interference characteristics of - -
overhead power lines and high-voltage
equipment - Part 2: Methods of
measurement and procedure for determining
limits
IEC TS 61463 -  Bushings - Seismic qualification - -

4

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SIST EN 60137:2018



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



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

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SIST EN 60137:2018
– 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

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SIST EN 60137:2018
IEC 60137:2017  IEC 2017 – 3 –
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 . 41
8.9 Verification of thermal short-time current withstand . 41
8.9.1 Applicability . 41
8.9.2 Verification method and requirements . 41
8.9.3 Acceptance . 42
8.10 Cantilever load withstand test . 42
8.10.1 Applicability . 42
8.10.2 Test method and requirements . 42
8.10.3 Acceptance . 43
8.11 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings . 43
8.11.1 Applicability . 43
8.11.2 Test method and requirements . 43
8.11.3 Acceptance . 44
8.12 Internal pressure test on gas-filled, gas-insulated and gas-impregnated
bushings . 44
8.12.1 Applicability . 44
8.12.2 Test method and requirements . 44
8.12.3 Acceptance . 44
8.13 External pressure test on partly or completely gas-immersed bushings . 44
8.13.1 Applicability . 44
8.13.2 Test method and requirements . 44
8.13.3 Acceptance . 44
8.14 Verification of dimensions . 44
8.14.1 Applicability . 44
8.14.2 Acceptance . 45
9 Routine tests . 45

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SIST EN 60137:2018
– 4 – IEC 60137:2017  IEC 2017
9.1 General . 45
9.2 Measurement of dielectric dissipation factor (tan δ) and capacitance at
ambient temperature . 45
9.2.1 Applicability . 45
9.2.2 Test method and requirements . 45
9.2.3 Acceptance . 45
9.3 Dry lightning impulse voltage withstand test . 46
9.3.1 Applicability . 46
9.3.2 Test method and requirements . 46
9.3.3 Acceptance . 46
9.4 Dry power-frequency voltage withstand test . 46
9.4.1 Applicability . 46
9.4.2 Test method and requirements . 47
9.4.3 Acceptance . 47
9.5 Measurement of partial discharge quantity . 47
9.5.1 Applicability . 47
9.5.2 Test method and requirements . 47
9.5.3 Acceptance . 47
9.6 Tests of tap insulation . 48
9.6.1 Applicability and test requirements . 48
9.6.2 Acceptance . 48
9.7 Internal pressure test on gas-filled, gas-insulated and gas-impregnated
bushings . 49
9.7.1 Applicability . 49
9.7.2 Test method and requirements . 49
9.7.3 Acceptance . 49
9.8 Tightness test on liquid-filled, compound-filled and liquid-insulated bushings . 49
9.8.1 Applicability . 49
9.8.2 Test method and requirements . 49
9.8.3 Acceptance . 49
9.9 Tightness test on gas-filled, gas-insulated and gas-impregnated bushings . 49
9.9.1 Applicability . 49
9.9.2 Test method and requirements . 50
9.9.3 Acceptance . 50
9.10 Tightness test at the flange or other fixing device . 50
9.10.1 Applicability . 50
9.10.2 Test method and requirements . 50
9.10.3 Acceptance . 51
9.11 Visual inspection and dimensional check . 51
9.11.1 Applicability . 51
9.11.2 Acceptance . 51
10 Requirements and tests for non-capacitance graded bushings of rated highest

voltages for equipment up to and including 52 kV . 51
10.1 General . 51
10.2 Temperature requirements . 51
10.3 Level of immersion medium. 51
10.4 Markings . 51
10.5 Test requirements . 52
10.5.1 General . 52

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SIST EN 60137:2018
IEC 60137:2017  IEC 2017 – 5 –
10.5.2 Type tests . 52
10.5.3 Routine tests . 52
11 Recommendations for transport, storage, erection, operation and maintenance . 53
11.1 General . 53
11.2 Conditions during transport, storage and installation . 53
11.3 Installation . 53
11.4 Unpacking and lifting . 53
11.5 Assembly . 54
11.5.1 General . 54
11.5.2 Mounting . 54
11.5.3 Connections . 54
11.5.4 Final installation inspection . 54
11.6 Operation . 55
11.7 Maintenance . 55
11.7.1 General . 55
11.7.2 Recommendation for the manufacturer . 55
11.7.3 Recommendations for the user . 56
11.7.4 Failure report . 56
12 Safety . 57
12.1 General . 57
12.2 Electrical aspects . 57
12.3 Mechanical aspects . 57
12.4 Thermal aspects . 58
13 Environmental aspects . 58
Annex A (informative) Determination of the hottest spot in bushings with conduc
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