EN IEC 60370:2018
(Main)Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes - Electric breakdown methods
Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes - Electric breakdown methods
This International Standard covers methods of test for the determination of thermal endurance (temperature index) of electrical insulating resins and varnishes for impregnation purposes. It is done by means of impregnating glass cloth and measuring electric strength or breakdown voltage before and after heat ageing. It covers the materials described in IEC 60455-3-5 and IEC 60464-3-2 and similar materials.
Prüfverfahren zur Beurteilung des thermischen Langzeitverhaltens von Isolierharzen und -lacken für Imprägnierungen – Elektrische Durchschlagmethoden
Méthode d’essai pour l’évaluation de l’endurance thermique des résines et vernis isolants d’imprégnation - Méthodes de claquage électrique
IEC 60370:2017 traite des méthodes d’essai qui permettent de déterminer l’endurance thermique (indice de température) des résines et vernis isolants électriques d’imprégnation. Cette endurance est déterminée par imprégnation de tissu de verre et en mesurant la rigidité diélectrique ou la tension de claquage avant et après le vieillissement thermique. Elle couvre les matériaux décrits dans l’IEC 60455-3-5 et l’IEC 60464-3-2, ainsi que les matériaux analogues.Cette deuxième édition annule et remplace la première édition parue en 1971. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: - le présent document décrit deux méthodes, la méthode existante conforme aux exigences de l’ASTM D1932 et une nouvelle méthode conforme aux exigences de l’IEC 60455-2 et de l’IEC 60464-2; - suppression et remplacement du contexte théorique et du mode de calcul par la référence à l’IEC 60216; - actualisation de la présentation et du système de numérotation; - ajout d’exemples pour une meilleure compréhension et représentation. Mots clés: d’essai d’endurance thermique
Postopek za preskušanje toplotne vzdržljivosti izolacijskih smol in premazov, namenjenih za impregnacijo - Metode z električnim prebojem (IEC 60370:2017)
Ta mednarodni standard zajema metode preskusov za določanje toplotne vzdržljivosti (temperaturni indeks) električnih izolacijskih smol in lakov za impregnacijo.
To se izvede z impregnacijo steklene tkanine in merjenjem električne moči ali prebojne napetosti pred staranjem zaradi toplote in po njem.
Zajema material opisan v standardih IEC 60455-3-5, IEC 60464-3-2 in podobnih materialih.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST HD 570 S1:1998
3RVWRSHN]DSUHVNXãDQMHWRSORWQHY]GUåOMLYRVWLL]RODFLMVNLKVPROLQSUHPD]RY
QDPHQMHQLK]DLPSUHJQDFLMR0HWRGH]HOHNWULþQLPSUHERMHP ,(&
Test procedure for thermal endurance of insulating resins and varnishes for impregnation
purposes - Electric breakdown methods (IEC 60370:2017)
Ta slovenski standard je istoveten z: EN IEC 60370:2018
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60370
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 29.035.01 Supersedes HD 570 S1:1990
English Version
Test procedure for thermal endurance of insulating resins and
varnishes for impregnation purposes - Electric breakdown
methods
(IEC 60370:2017)
Méthode d'essai pour l'évaluation de l'endurance thermique Prüfverfahren zur Beurteilung des thermischen
des résines et vernis isolants d'imprégnation - Méthodes de Langzeitverhaltens von Isolierharzen und -lacken für
claquage électrique Imprägnierungen - Elektrische Durchschlagmethoden
(IEC 60370:2017) (IEC 60370:2017)
This European Standard was approved by CENELEC on 2018-01-17. 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: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60370:2018 E
European foreword
The text of document 15/812/FDIS, future edition 2 of IEC 60370, prepared by IEC/TC 15 "Solid
electrical insulating materials" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60370:2018.
The following dates are fixed:
(dop) 2018-10-17
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-01-17
standards conflicting with the
document have to be withdrawn
This document supersedes HD 570 S1:1990.
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 60370:2017 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 60455-2 NOTE Harmonized as EN 60455-2.
IEC 60464-2 NOTE Harmonized as EN 60464-2.
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 60212 - Standard conditions for use prior to and EN 60212 -
during the testing of solid electrical
insulating materials
IEC 60216 series Electrical insulating materials - Thermal EN 60216 series
endurance properties
IEC 60216-4-1 - Electrical insulating materials - Thermal EN 60216-4-1 -
endurance properties -- Part 4-1: Ageing
ovens - Single-chamber ovens
IEC 60216-4-2 - Electrical insulating materials - Thermal EN 60216-4-2 -
endurance properties -- Part 4-2: Ageing
ovens - Precision ovens for use up to 300
°C
IEC 60216-4-3 - Electrical insulating materials - Thermal EN 60216-4-3 -
endurance properties -- Part 4-3: Ageing
ovens - Multi-chamber ovens
IEC 60243-1 - Electric strength of insulating materials - EN 60243-1 -
Test methods -- Part 1: Tests at power
frequencies
IEC 60455-3-5 - Resin based reactive compounds used for EN 60455-3-5 -
electrical insulation -- Part 3: Specifications
for individual materials -- Sheet 5:
Unsaturated polyester based impregnating
resins
IEC 60464-3-2 - Varnishes used for electrical insulation -- EN 60464-3-2 -
Part 3: Specifications for individual
materials -- Sheet 2: Hot curing
impregnating varnishes
IEC 60641-3-1 - Pressboard and presspaper for electrical EN 60641-3-1 -
purposes -- Part 3: Specifications for
individual materials -- Sheet 1:
Requirements for pressboard, types B.0.1,
B.0.3, B.2.1, B.2.3, B.3.1, B.3.3, B.4.1,
B.4.3, B.5.1, B.5.3 and B.6.1
ISO 2078 - Textile glass - Yarns - Designation EN ISO 2078 -
ISO 2113 - Reinforcement fibres - Woven fabrics - - -
Basis for a specification
IEC 60370 ®
Edition 2.0 2017-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Test procedure for thermal endurance of insulating resins and varnishes for
impregnation purposes – Electric breakdown methods
Méthode d’essai pour l’évaluation de l’endurance thermique des résines et
vernis isolants d’imprégnation – Méthodes de claquage électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.01 ISBN 978-2-8322-5108-9
– 2 – IEC 60370:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Methods of test . 7
4.1 General . 7
4.2 Method 1 – Curved electrode system . 8
4.2.1 Specimen . 8
4.2.2 Impregnation process . 8
4.2.3 Curved electrode system . 9
4.2.4 Ageing ovens and ageing temperatures . 9
4.2.5 Test procedure . 10
4.3 Method 2 – Ball to plate method . 12
4.3.1 Specimen . 12
4.3.2 Impregnation process . 12
4.3.3 Electrode system . 13
4.3.4 Ageing ovens and ageing temperatures . 13
4.3.5 Test procedure . 14
5 Report . 16
Bibliography . 17
Figure 1 – Curved electrode fixture . 9
Figure 2 – Electric strength – Ageing time – Graph . 11
Figure 3 – Thermal endurance graph . 12
Figure 4 – Breakdown voltage – Ageing time – Graph . 15
Figure 5 – Thermal endurance graph . 15
IEC 60370:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST PROCEDURE FOR THERMAL ENDURANCE OF INSULATING
RESINS AND VARNISHES FOR IMPREGNATION PURPOSES –
ELECTRIC BREAKDOWN METHODS
FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60370 has been prepared by IEC technical committee 15: Solid
electrical insulating materials.
This second edition cancels and replaces the first edition published in 1971. This editi
...
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