EN IEC 61857-32:2019
(Main)Electrical insulation systems - Procedures for thermal evaluation - Part 32: Multifactor evaluation with increased factors during diagnostic testing
Electrical insulation systems - Procedures for thermal evaluation - Part 32: Multifactor evaluation with increased factors during diagnostic testing
IEC 61857-32:2019 series is focused on applications where other possible factors need to be incorporated to evaluate any influence on the performance of the electrical insulation system (EIS). Multi-factor evaluation is the most complex type of project to design and conduct. Clear guidelines are needed to give the user of this document a uniform approach and a method to analyse the test results. This document is for applications where the stresses are some combination of other factors of influence identified in IEC 60505. The multi-factor stresses are applied during the diagnostic portion of each test cycle. A few examples of other factors of influence or multi-factor stresses are: – high vibration; – submersion in oils, water, or solutions; – voltage higher than the test voltage of the reference EIS; – decreased cold shock temperature.
Elektrische Isoliersysteme - Verfahren zur thermischen Bewertung - Teil 32: Multifaktor-Bewertung mit erhöhten Faktoren während der diagnostischen Prüfung
Systèmes d'isolation électrique - Procédures d'évaluation thermique - Partie 32: Évaluation multifactorielle avec facteurs augmentés pendant les essais de diagnostic
L'IEC 61857-32:2019 concerne essentiellement les applications dans lesquelles il est nécessaire d'intégrer d'autres facteurs possibles pour évaluer l'impact sur les performances du système d'isolation électrique (SIE). L'évaluation multifactorielle est le type de projet le plus complexe à concevoir et réaliser. Des lignes directrices claires sont nécessaires pour proposer à l'utilisateur du présent document une approche uniforme et une méthode d'analyse des résultats d'essai. Le présent document concerne les applications dans lesquelles les contraintes combinent d'autres facteurs d'influence identifiés dans l'IEC 60505. Les contraintes multifactorielles sont appliquées pendant la partie de chaque cycle d'essai relative au diagnostic. Quelques exemples d'autres facteurs d'influence ou de contraintes multifactorielles sont: – les fortes vibrations; – l'immersion dans l'huile, l'eau ou des solutions; – une tension supérieure à la tension d'essai du SIE de référence; – une température de choc au froid diminuée.
Sistemi električne izolacije - Postopki za toplotno vrednotenje - 32. del: Večfaktorsko vrednotenje s povečanimi faktorji med diagnostičnim preskušanjem (IEC 61857-32:2019)
Skupina standardov EN-IEC 61857 se osredotoča na aplikacije, pri katerih je treba vključiti druge možne dejavnike za oceno morebitnega vpliva na delovanje sistema električne izolacije (EIS). Večfaktorsko vrednotenje je najbolj zapletena vrsta projektov za načrtovanje in izvedbo. Za zagotovitev enotnega pristopa in metode za analizo rezultatov preskusa so potrebne jasne smernice. Ta dokument je namenjen načinom uporabe, pri katerih so obremenitve kombinacija drugih dejavnikov vpliva, opredeljenih v standardu IEC 60505. Večfaktorske obremenitve se uporabljajo med diagnostičnimi deli posameznega cikla preskusa. Nekaj primerov drugih dejavnikov vpliva ali večfaktorskih obremenitev: – visoke vibracije; – potapljanje v olja, vodo ali raztopine; – napetost, višja od preskusne napetosti referenčnega sistema električne izolacije; – znižana temperatura hladnega šoka.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2020
Sistemi električne izolacije - Postopki za toplotno vrednotenje - 32. del:
Večfaktorsko vrednotenje s povečanimi faktorji med diagnostičnim preskušanjem
(IEC 61857-32:2019)
Electrical insulation systems - Procedures for thermal evaluation - Part 32: Multifactor
evaluation with increased factors during diagnostic testing (IEC 61857-32:2019)
Elektrische Isoliersysteme - Verfahren zur thermischen Bewertung - Teil 32: Multifaktor-
Bewertung mit erhöhten Faktoren während der diagnostischen Prüfung (IEC 61857-
32:2019)
Systèmes d'isolation électrique - Procédures d'évaluation thermique - Partie 32:
Évaluation multifactorielle avec facteurs augmentés pendant les essais de diagnostic
(IEC 61857-32:2019)
Ta slovenski standard je istoveten z: EN IEC 61857-32:2019
ICS:
29.080.30 Izolacijski sistemi Insulation systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61857-32
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2019
ICS 29.080.30
English Version
Electrical insulation systems - Procedures for thermal evaluation
- Part 32: Multifactor evaluation with increased factors during
diagnostic testing
(IEC 61857-32:2019)
Systèmes d'isolation électrique - Procédures d'évaluation Elektrische Isoliersysteme - Verfahren zur thermischen
thermique - Partie 32: Évaluation multifactorielle avec Bewertung - Teil 32: Multifaktor-Bewertung mit erhöhten
facteurs augmentés pendant les essais de diagnostic Faktoren während der diagnostischen Prüfung
(IEC 61857-32:2019) (IEC 61857-32:2019)
This European Standard was approved by CENELEC on 2019-11-18. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61857-32:2019 E
European foreword
The text of document 112/399/CDV, future edition 1 of IEC 61857-32, prepared by IEC/TC 112
"Evaluation and qualification of electrical insulating materials and systems" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 61857-32:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-08-18
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-11-18
document have to be withdrawn
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 61857-32:2019 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60505 NOTE Harmonized as EN 60505
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 61857-1 - Electrical insulation systems - Procedures EN 61857-1 -
for thermal evaluation - Part 1: General
requirements - Low-voltage
IEC 61858-2 - Electrical insulation systems - Thermal EN 61858-2 -
evaluation of modifications to an
established electrical insulation system
(EIS) - Part 2: Form-wound EIS
IEC/TR 61857-2 - Electrical insulation systems - Procedures - -
for thermal evaluation - Part 2: Selection of
the appropriate test method for evaluation
and classification of electrical insulation
systems
IEC 61857-32 ®
Edition 1.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical insulation systems – Procedures for thermal evaluation –
Part 32: Multifactor evaluation with increased factors during diagnostic testing
Systèmes d'isolation électrique – Procédures d'évaluation thermique –
Partie 32: Évaluation multifactorielle avec facteurs augmentés pendant
les essais de diagnostic
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.30 ISBN 978-2-8322-7463-7
– 2 – IEC 61857-32:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Procedure . 7
5 Test objects . 7
6 EIS evaluation . 7
7 Part 1: Baseline structure . 8
7.1 General . 8
7.2 Illustration of the structure – Thermal evaluation . 8
7.3 Example of thermal evaluation of a candidate EIS . 9
8 Part 2: Evaluation of other factors . 10
8.1 General . 10
8.2 Selection of the ageing temperature for the one-temperature comparison . 10
8.3 Application of increased or additional diagnostic factors . 11
9 Analysis of data . 11
9.1 General . 11
9.2 Evaluation of the other factors of influence . 11
9.3 Comparison of the results is between the baseline EIS and any of the sets of
results for other factors of influence . 11
10 Report . 12
Bibliography . 13
Annex A (informative) Example of a test data sheet report . 14
Annex B (informative) Example of thermal ageing data for the reference EIS –
Establishing the correlation time . 15
Annex C (informative) Example of a test data sheet for a baseline candidate thermal
classification . 16
Annex D (informative) Establishing the thermal endurance of the baseline candidate
using the reference correlation time . 17
Figure 1 – Overview . 7
Figure 2 – Illustration of the establishment of the thermal classification of
the candidate EIS . 9
Figure B.1 – Reference data with the known temperature of 186 °C, time coordinate
established at 45 200 h . 15
Figure D.1 – Baseline candidate data with the known thermal index of 161 °C when the
time coordinate from the reference is 45 200 hours . 17
Table 1 – Example of a reference EIS and candidate EIS; performance at temperature
and thermal classification. 9
Table 2 – Example of ageing temperature selection for the one-temperature
comparison . 10
Table A.1 – Example of a test data sheet . 14
Table C.1 – Example of a test data sheet for a baseline candidate . 16
IEC 61857-32:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATION SYSTEMS – PROCEDURES
FOR THERMAL EVALUATION –
Part 32: Multifactor evaluation with increased
factors during diagnostic testing
FOREWORD
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