BS-EN-60076-11-2004.pdf
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1、BRITISH STANDARD BS EN 60076-11:2004 Power transformers Part 11: Dry-type transformers The European Standard EN 60076-11:2004 has the status of a British Standard ICS 29.180 ? BS EN 60076-11:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee o
2、n 28 April 2006 BSI 2006 ISBN 0 580 47972 2 National foreword This British Standard is the official English language version of EN 60076-11:2004. It is identical with IEC 60076-11:2004. It supersedes BS EN 60726:2003 which will be withdrawn on 1 July 2007. The UK participation in its preparation was
3、 entrusted to Technical Committee PEL/14, Power transformers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to
4、in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of
5、 a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or prop
6、osals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 38, an inside back cover and a back cover. The BSI cop
7、yright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD EN 60076-11 NORME EUROPENNE EUROPISCHE NORM July 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Nor
8、malisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60076-11:2004 E ICS 29.180 Supersedes EN
9、60726:2003 English version Power transformers Part 11: Dry-type transformers (IEC 60076-11:2004) Transformateurs de puissance Partie 11: Transformateurs de type sec (CEI 60076-11:2004) Leistungstransformatoren Teil 11: Trockentransformatoren (IEC 60076-11:2004) This European Standard was approved by
10、 CENELEC on 2004-07-01. 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 such national st
11、andards 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 own language and n
12、otified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
13、rg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 60076-11:2004 2 Foreword The text of document 14/476/FDIS, future edition 1 of IEC 60076-11, prepared by IEC TC 14, Power transformers, was submitted to the IEC-CENELEC parallel vo
14、te and was approved by CENELEC as EN 60076-11 on 2004-07-01. This European Standard supersedes EN 60726:2003. 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) 2005-04-01 latest
15、 date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-07-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60076-11:2004 was approved by CENELEC as a European Standard without any modification. _ 3 EN 60076-
16、11:2004 CONTENTS 1 Scope 6 2 Normative references .6 3 Terms and definitions .7 4 Service conditions 7 4.1 General.7 4.2 Normal service conditions7 4.3 Electromagnetic compatibility (EMC)8 4.4 Provision for unusual service conditions.8 4.5 Transport and storage conditions .9 5 Tappings 9 6 Connectio
17、ns .9 7 Ability to withstand short circuit.9 8 Rating 10 8.1 General.10 8.2 Rated power10 8.3 Preferred values of rated power .10 8.4 Operation at higher than rated voltage .10 8.5 Operation with fan cooling .10 8.6 Operation in an enclosure10 9 Rating plate11 9.1 Rating plate fitted to the transfor
18、mer 11 9.2 Rating plate fitted to the transformer enclosure 11 10 Identification according to cooling method.11 10.1 Identification symbols 11 10.2 Arrangement of symbols 12 11 Temperature-rise limits.12 11.1 Normal temperature-rise limits .12 11.2 Reduced temperature rises for transformers designed
19、 for high cooling air temperatures or special air cooling conditions 13 11.3 High altitude temperature rise correction13 12 Insulation levels .13 12.1 General.13 12.2 Transformers for use at high altitudes 15 13 Climatic, environmental and fire behaviour classes15 13.1 Climatic classes.15 13.2 Envir
20、onmental classes.15 13.3 Fire behaviour classes.15 13.4 Test criteria for climatic, environmental and fire behaviour classes .16 14 General requirements for tests16 15 Measurement of winding resistance (routine test)16 16 Measurement of voltage ratio and check of phase displacement (routine test)17
21、17 Measurement of short-circuit impedance and load loss (routine test)17 18 Measurement of no-load loss and current (routine test) .17 19 Separate-source AC withstand voltage test (routine test).17 EN 60076-11:2004 4 20 Induced AC withstand voltage test (routine test)17 21 Lightning impulse test (ty
22、pe test) 18 22 Partial discharge measurement (routine and special test) 18 22.1 General.18 22.2 Basic measuring circuit (typical only) .18 22.3 Calibration of the measuring circuit 18 22.4 Voltage application 19 22.5 Partial discharge acceptance levels .20 23 Temperature-rise test (type test).21 23.
23、1 General.21 23.2 Methods of loading 21 23.3 Winding temperature-rise correction for reduced current.24 23.4 Determination of steady state conditions 24 24 Measurement of sound level (special test).24 25 Short-circuit test (special test) 25 26 Environmental test (special test) .25 26.1 General.25 26
24、.2 Validity of the test25 26.3 Testing procedure25 27 Climatic test (special test).26 27.1 Thermal shock test (special test)26 27.2 Validity of the test26 27.3 Thermal shock test for C1 class transformers.27 27.4 Thermal shock test for C2 class transformers.28 28 Fire behaviour test (special test).2
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