BS-EN-61857-21-1999 IEC-61857-21-1998.pdf
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1、BRITISH STANDARD BS EN 61857-21:1999 IEC 61857-21: 1998 Electrical insulation systems Procedures for thermal evaluation Part 21: Specific requirements for general-purpose model Wire-wound applications The European Standard EN 61857-21:1999 has the status of a British Standard ICS 29.080.30 Licensed
2、Copy: sheffieldun sheffieldun, na, Thu Nov 09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61857-21:1999 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into
3、effect on 15 April 1999 BSI 02-2000 ISBN 0 580 32259 9 National foreword This British Standard is the English language version of EN 61857-21:1999. It is identical with IEC 61857-21:1998. The UK participation in its preparation was entrusted to Technical Committee GEL/98, Electrical insulation syste
4、ms, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulg
5、ate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the c
6、hange over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding
7、European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue.
8、A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
9、a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendme
10、nts issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61857-21:1999 BSI 02-2000i Contents Page National forewordInside front cover Foreword2 Text of EN 61857-213 Licensed Copy: sheffieldun sh
11、effieldun, na, Thu Nov 09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61857-21 January 1999 ICS 29.080.01 Descriptors: Elec
12、tric equipment, electrical insulation, definitions, specifications, thermal tests, ageing tests: materials, testing conditions, temperature, humidity, life durability, dielectric strength tests English version Electrical insulation systems Procedures for thermal evaluation Part 21: Specific requirem
13、ents for general-purpose model Wire-wound applications (IEC 61857-21:1998) Systmes disolation lectrique Procdures dvaluation thermique Partie 21: Exigences particulires pour le modle dusage gnral Applications aux enroulements fil (CEI 61857-21:1998) Elektrische Isoliersysteme Verfahren zur thermisch
14、en Bewertung Teil 21: Spezielle Bedingungen fr ein Mehrzweck-Modell Anwendung bei Drahtwicklungen (IEC 61857-21:1998) This European Standard was approved by CENELEC on 1999-01-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
15、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 Central Secretariat or to any CENELEC member. This European Standard exists in three official vers
16、ions (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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of
17、 Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechn
18、ique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1999 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61857-21:1999 E Licensed Copy: sheffieldun sheffieldun, na, Thu Nov
19、09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61857-21:1999 BSI 02-2000 2 Foreword The text of document 98/69/FDIS, future edition 1 of IEC 61857-21, prepared by IEC TC 98, Electrical insulation systems (EIS), was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
20、EN 61857-21 on 1999-01-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61857-21:1998 was approved by CEN
21、ELEC as a European Standard without any modification. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Definitions3 4Construction3 4.1General information3 4.2GPM components3 4.3Assembly of the GPM4 5Number of test objects5 6Test procedures5 6.1Initial dielectric diagnostic test5
22、 6.2Mechanical stress5 6.3Other conditioning5 6.4Moisture exposure5 6.5Dielectric diagnostic test5 6.6Thermal ageing5 Figure 1 Diagram of a test object frame6 Annex ZA (normative) Normative references to international publications with their corresponding European publicationsInside back cover lates
23、t date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1999-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 2001-10-01 Licensed Copy: sheffieldun sheffieldun, na, Thu N
24、ov 09 15:56:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61857-21:1999 BSI 02-20003 Introduction A series of parts of IEC 61857 will be developed, each of which will address a specific test object and/or application with an associated test procedure. This part of IEC 61857 provides a general-pur
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