IEC 60076-1-2011.pdf

1、lll _ I_ EC_6_00_7_6_-1 l-0 0 co 0 l!INTERNATIONAL STANDARD NORME INTERNATIONALE Power transformers-Part 1:General Transformateurs de puissance-Partie 1:Generalites Copyright International Electrotechnical Commission Provided by IHS under license with IEC c:=._ No reproduction or networking permitte

2、d without license from IHS Licensee=Nanyang Technological Univ/5926867100 Not for Resale,07/01/2013 03:43:03 MDT Edition 3.0 2011-04 THIS PUBLICATION IS COPYRIGHT PROTECTED LU Copyright 2011 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be repr

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17、ction or networking permitted without license from IHS Licensee=Nanyang Technological Univ/5926867100 Not for Resale,07/01/2013 03:43:03 MDT lll._ 1E_C_60_0_1_6-_1 INTERNATIONAL STANDARD NORME INTERNATIONALE Power transformers-Part 1:General Transformateurs de puissance-Partie 1:Generalites INTERNAT

18、IONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.180 Registered trademark of the International Electrotechnical Commission Copyright International Electrotechnical Comf!lission de la Commission Electrotechnique I nternationale Provided by IHS under license with IEC

19、 No reproduction or networking permitted without license from IHS Licensee=Nanyang Technological Univ/5926867100 Not for Resale,07/01/2013 03:43:03 MDT Edition 3.0 2011-04 PRICE CODE CODE PRIX XB ISBN 978-2-88912-438-1-2-60076-1 IEC:2011 CONTENTS FOREWORD.5 1 Scope.7 2 Normative references.8 3 Terms

20、 and definitions.8 3.1 General.8 3.2 Terminals and neutral point.9 3.3 Windings.10 3.4 Rating.11 3.5 Tappings.13 3.6 Losses and no-load current.15 3.7 Short-circuit impedance and voltage drop.16 3.8 Temperature rise.17 3.9 Insulation.17 3.10 Connections.17 3.11 Test classification.18 3.12 Meteorolog

21、ical data with respect to cooling.19 3.13 Other definitions.19 4 Service conditions.20 4.1 General.20 4.2 Normal service conditions.20 5 Rating and general requirements.22 5.1 Rated power.22 5.1.1 General.22 5.1.2 Preferred values of rated power.22 5.1.3 Minimum power under alternative cooling modes

22、.22 5.1.4 Loading beyond rated power.23 5.2 Cooling mode.23 5.3 Load rejection on transformers directly connected to a generator.23 5.4 Rated voltage and rated frequency.23 5.4.1 Rated voltage.23 5.4.2 Rated frequency.23 5.4.3 Operation at higher than rated voltage and/or at other than rated frequen

23、cy.24 5.5 Provision for unusual service conditions.24 5.6 Highest voltage for equipment Um and dielectric tests levels.25 5.7 Additional information required for enquiry.25 5.7.1 Transformer classification.25 5.7.2 Winding connection and number of phases.25 5.7.3 Sound level.26 5.7.4 Transport.26 5.

24、8 Components and materials.26 6 Requirements for transformers having a tapped winding.27 6.1 General-Notation of tapping range.27 6.2 Tapping voltage-tapping current.Standard categories of tapping voltage variation.Maximum voltage tapping.27 6.3 Tapping power.Full-power tappings-reduced-power tappin

25、gs.30 Copyright International Electrotechnical Commission Provided by IHS under license with IEC No reproduction or networking permitted without license from IHS Licensee=Nanyang Technological Univ/5926867100 Not for Resale,07/01/2013 03:43:03 MDT 60076-1 IEC:2011-3-6.4 Specification of tappings in

26、enquiry and order.31 6.4.1 General.31 6.4.2 Constructional specification.31 6.4.3 Functional specification.32 6.5 Specification of short-circuit impedance.32 6.6 Load loss and temperature rise.33 7 Connection phase displacement symbols.34 7.1 Connection and phase displacement symbols for three-phase

27、 transformers and for single phase transformers connected in a three phase bank.34 7.1.1 Connection symbol.34 7.1.2 Phase displacement in clock number notation.34 7.1.3 Windings not intended to be loaded.35 7.1.4 Reconnectable windings.35 7.1.5 Examples.35 7.2 Connection and phase displacement symbo

28、ls for single phase transformers not in three phase bank.37 7.2.1 Connection symbol.37 7.2.2 Phase displacement in clock number notation.38 7.2.3 Windings not intended to be loaded.38 7.2.4 Reconnectable windings.38 8 Rating plates.39 8.1 General.39 8.2 Information to be given in all cases.39 8.3 Ad

29、ditional information to be given when applicable.40 9 Safety,environmental and other requirements.41 9.1 Safety and environmental requirements.41 9.1.1 Liquid leaks.41 9.1.2 Safety considerations.41 9.2 Dimensioning of neutral connection.42 9.3 Liquid preservation system.42 9.4 DC currents in neutra

30、l circuits.43 9.5 Centre of gravity marking.43 10 Tolerances.43 11 Tests.44 11.1 General requirements for routine,type and special tests.44 11.1.1 General.44 11.1.2 Routine tests.46 11.1.3 Type tests.46 11.1.4 Special tests.4 7 11.2 Measurement of winding resistance.47 11.2.1 General.47 11.2.2 Dry-t

31、ype transformers.47 11.2.3 Liquid-immersed type transformers.48 11.3 Measurement of voltage ratio and check of phase displacement.48 11.4 Measurement of short-circuit impedance and load loss.48 11.5 Measurement of no-load loss and current.49 11.6 Measurement of zero-sequence impedance(s)on three-pha

32、se transformers.50 11.7 Tests on on-load tap-changers-Operation test.51 Copyright International Electrotechnical Commission Provided by IHS under license with IEC No reproduction or networking permitted without license from IHS Licensee=Nanyang Technological Univ/5926867100 Not for Resale,07/01/2013

33、 03:43:03 MDT-4-60076-1 IEC:2011 11.8 Leak testing with pressure for liquid immersed transformers(tightness test).51 11.9 Vacuum deflection test for liquid immersed transformers.51 11.10 Pressure deflection test for liquid immersed transformers.52 11.11 Vacuum tightness test on site for liquid immersed transformers.53 11.12 Check of core and frame insulation.53 12 Electromagnetic compatibility(EMC