BS EN 61857-1-2009 电气绝缘系统.热评估过程.低电压一般要求.pdf
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1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards Electrical insulation systems Procedures for thermal evaluation Part 1: General requirements Low-voltage BS EN 61857-1:2009 National foreword This British Standard is the UK imple
2、mentation of EN 61857-1:2009. It is identical to IEC 61857-1:2008. It supersedes BS EN 61857-1:2005 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GEL/112, Evaluation and qualification of electrical insulating materials and systems. A list of organiz
3、ations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2009 ISBN 978 0 580 62003 4 ICS 29.080.30 Compliance with a British Standa
4、rd cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2009 Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARDBS EN 61857-1:2009 w w w . b z f x w . c o m E
5、UROPEAN STANDARD EN 61857-1 NORME EUROPENNE EUROPISCHE NORM January 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels 2009 CENE
6、LEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61857-1:2009 E ICS 29.080.30 Supersedes EN 61857-1:2005 English version Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage (IE
7、C 61857-1:2008) Systmes disolation lectrique - Procdures dvaluation thermique - Partie 1: Exigences gnrales - Basse tension (CEI 61857-1:2008) Elektrische Isoliersysteme - Verfahren zur thermischen Bewertung - Teil 1: Allgemeine Anforderungen - Niederspannung (IEC 61857-1:2008) This European Standar
8、d was approved by CENELEC on 2008-12-01. 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
9、 such national standards may be obtained on application to the Central Secretariat 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 o
10、wn language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
11、ly, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61857-1:2009 w w w . b z f x w . c o m EN 61857-1:2009 - 2 - Foreword The text of document 112/92/CDV, future edition 3 of IEC 61
12、857-1, prepared by IEC TC 112, Evaluation and qualification of electrical insulating materials and systems, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61857-1 on 2008-12-01. This European Standard supersedes EN 61857-1:2005 and constitutes editorial revisions to
13、 make EN 61857-1:2009 compatible with Parts 21 and 22. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-09-01 latest date by which the national standards conflicting with
14、the EN have to be withdrawn (dow) 2011-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61857-1:2008 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have t
15、o be added for the standards indicated: IEC 60034-18-1 NOTE Harmonized as EN 60034-18-1:1994 (not modified). IEC 60034-18-21 NOTE Harmonized as EN 60034-18-21:1994 (not modified). IEC 60034-18-31 NOTE Harmonized as EN 60034-18-31:1994 (not modified). IEC 62114 NOTE Harmonized as EN 62114:2001 (not m
16、odified). _ BS EN 61857-1:2009 w w w . b z f x w . c o m - 3 - EN 61857-1:2009 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated r
17、eferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Titl
18、e EN/HD Year IEC 60085 2004 Electrical insulation - Thermal classification EN 60085 1) 2004 IEC 60216-4-1 - 2) Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens EN 60216-4-1 2006 3) IEC 60216-5 - 2) Electrical insulating materials - Therma
19、l endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material EN 60216-5 2008 3) IEC 60493-1 - 2) Guide for the statistical analysis of ageing test data - Part 1: Methods based on mean values of normally distributed test results - - IEC 60505 2004
20、 Evaluation and qualification of electrical insulation systems EN 60505 2004 1) EN 60085 is superseded by EN 60085:2008, which is based on IEC 60085:2007. 2) Undated reference. 3) Valid edition at date of issue. BS EN 61857-1:2009 w w w . b z f x w . c o m 2 61857-1 IEC:2008 CONTENTS INTRODUCTION.5
21、1 Scope.6 2 Normative references6 3 Terms and definitions .6 4 General information 8 4.1 Overview of test procedure 8 4.2 Basis of evaluation and qualification 8 4.3 Specific requirements 8 5 Test objects9 5.1 General .9 5.2 Description 9 5.3 Number of test objects.9 6 Test procedures9 6.1 General .
22、9 6.2 Initial screening tests.9 6.3 Thermal ageing .10 6.4 Prediagnostic mechanical stress11 6.5 Other prediagnostic conditioning11 6.6 Moisture exposure .12 6.7 Dielectric diagnostic tests 12 6.8 Other diagnostic tests12 7 Analyzing, reporting and classification.12 7.1 End-point criterion .12 7.2 M
23、ethod of determining life13 7.3 Extrapolation of data13 7.4 Report of results14 Bibliography16 Figure 1 Arrhenius graph for comparing a candidate system C with a reference system R.15 Table 1 Suggested ageing temperatures and ageing periods.10 Table 2 Thermal class assignment .13 BS EN 61857-1:2009
24、w w w . b z f x w . c o m 61857-1 IEC:2008 5 INTRODUCTION This International Standard establishes a standardized test procedure for estimating by comparison the life expectancy of electrical insulation systems (EIS) in accordance with IEC 60505. An EIS contains many different components selected to
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