1、 IEC 62695 Edition 1.0 2014-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Fixed installations Traction transformers Applications ferroviaires Installations fixes Transformateurs de traction IEC 62695:2014-07(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright
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19、tte publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62695 Edition 1.0 2014-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Fixed installations Traction transformers Applications ferroviaires Installations fixes Transformateurs de traction INTERNATIONAL EL
20、ECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 45.060 PRICE CODE CODE PRIX ISBN 978-2-8322-1645-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this
21、 publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 62695:2014 IEC 2014 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8 2 Normative references . 8 3 Terms, definitions and symbols 9 3.1 Ter
22、ms and definitions 9 3.2 Symbols 14 4 Service conditions 15 5 General requirements for a traction transformer . 16 5.1 Loading . 16 5.1.1 General 16 5.1.2 Rated current . 17 5.1.3 Rated current of accessories 17 5.2 Checking of the capability of the transformer to sustain the stipulated load cycle .
23、 17 5.2.1 General 17 5.2.2 Temperature rise measurement for liquid immersed transformers . 18 5.2.3 Temperature rise measurement for dry-type transformers . 18 5.2.4 Alternative criteria for determining temperature rise limits . 18 5.3 Transferred overvoltages . 19 5.4 Short circuit stresses . 19 5.
24、4.1 General 19 5.4.2 Short circuit withstand (when applicable) 19 5.5 Insulation characteristics and test values . 20 5.6 Other particular features 20 5.7 Requirements for the simulation test 21 5.8 Rating plate. 21 6 Directly-coupled traction transformer 22 6.1 General . 22 6.2 Dielectric tests for
25、 windings with U m 300 kV . 22 6.2.1 General 22 6.2.2 Applied voltage test (routine test) . 22 6.2.3 Lightning impulse test (type test) 22 6.2.4 Induced overvoltage withstand test (routine test) 23 6.3 Dielectric tests for windings with U m 300 kV . 23 6.3.1 General 23 6.3.2 Applied voltage test (ro
26、utine test) . 23 6.3.3 Lightning impulse test (routine test) 23 6.3.4 Switching impulse test (routine test) . 23 6.3.5 Induced overvoltage withstand test (routine test) 23 7 Traction converter transformers . 24 7.1 General . 24 7.2 Short-circuit impedance and load loss . 25 7.2.1 Total load loss cal
27、culation 25 7.2.2 Impedance . 25 7.3 Tolerances 26 IEC 62695:2014 IEC 2014 3 8 Auxiliary transformers 27 9 Traction auto-transformers . 27 9.1 General . 27 9.2 Loading . 29 9.3 Checking of the capability of the auto-transformer to sustain the stipulated load cycle 29 9.4 Short-circuit stresses 29 10
28、 Three-phase to two-phase conversion transformers . 29 10.1 General . 29 10.2 Scott connection transformer . 30 10.2.1 General 30 10.2.2 Loading 31 10.2.3 Checking of the capability of the Scott connection transformer to sustain the stipulated load cycle . 31 10.2.4 Short-circuit stresses . 31 10.3
29、Modified Woodbridge transformer 31 10.3.1 General 31 10.3.2 Loading 34 10.3.3 Checking of the capability of the modified Woodbridge transformer to sustain the stipulated load cycle . 34 10.3.4 Short-circuit stresses . 34 10.4 Roof-delta connection transformer . 34 10.4.1 General 34 10.4.2 Loading 36
30、 10.4.3 Checking of the capability of the roof-delta connection transformer to sustain the stipulated load cycle . 36 10.4.4 Short-circuit stresses . 36 11 Other traction transformers 37 11.1 General . 37 11.2 Booster transformer 37 11.3 Scalene Scott connection transformer . 37 Annex A (informative
31、) Preferred duty classes . 39 Annex B (normative) Insulation characteristics and test values . 44 Annex C (normative) Determination of losses and of equivalent current by means of alternative methods . 45 C.1 General . 45 C.2 Definition of symbols used in loss calculation 45 C.3 Ratios between rated
32、 current and rated service current for traction converter transformers . 45 C.4 Calculation of load losses based on loss measurements at two different frequencies for oil immersed transformers . 48 C.5 Calculation of load losses based on two frequencies for dry type transformers . 49 Annex D (inform
33、ative) Evaluation of traction transformer behaviour 50 D.1 Evaluation of losses 50 D.2 Magnetic information . 50 Annex E (informative) Information for tenders and orders . 51 E.1 Information to be provided in a tender enquiry . 51 E.1.1 General 51 E.1.2 Characteristics . 51 E.1.3 Service conditions
34、51 4 IEC 62695:2014 IEC 2014 E.1.4 Auxiliaries 52 E.1.5 Operation and fitting . 52 E.1.6 Tests . 52 E.2 Information to be provided in a tender . 52 Bibliography 53 Figure 1 Example of scheme for connection Dd0y11 with earthed screen 22 Figure 2 Typical arrangement of a traction auto-transformer . 28
35、 Figure 3 Vector groups of traction auto-transformers 28 Figure 4 Connection of Scott connection transformers 30 Figure 5 Connection of modified Woodbridge transformers . 32 Figure 6 Phase A currents on modified Woodbridge transformer . 33 Figure 7 Phase B currents on modified Woodbridge transformer
36、 . 33 Figure 8 Connection of roof-delta connection transformers . 35 Figure 9 Phase currents on roof-delta connection transformer 36 Figure 10 Booster transformer 37 Figure 11 Scalene Scott connection transformer . 38 Figure A.1 Test cycle for duty classes IA to IF 40 Figure A.2 Test cycle for duty
37、classes V, VI, VII 41 Figure A.3 Test cycle for duty classes VIII, IX and JP . 42 Figure A.4 Test cycle for duty class CN 43 Figure C.1 Service current versus fundamental current . 48 Table 1 Tolerances for voltage ratio and impedances of traction converter transformers . 26 Table A.1 Preferred duty
38、 classes 39 Table B.1 Insulation voltages and test values 44 Table C.1 Connections of converter transformers . 46 Table C.2 Main harmonic contents for various converter connections 47 Table C.3 Service current over rated current . 47 IEC 62695:2014 IEC 2014 5 INTERNATIONAL ELECTROTECHNICAL COMMISSIO
39、N _ RAILWAY APPLICATIONS FIXED INSTALLATIONS TRACTION TRANSFORMERS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote internatio
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48、 costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct ap
49、plication of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62695 has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is derived from EN 50329:200
