Figure C.6 – Measurements and comparison with the simulations madeby finite element metho. Figure A.1 ? Cross-section of a winding strand Figure A.2 – Terminal identification for winding connection Y y0y6 Figure A.3 – Terminal identification for winding connection D d0y1 Figure?A.4 – Valve current DB connection rectangular shape?positive shape Figure?A.5 – Valve current DB connection rectangular shape positive and negative shape Figure?A.6 – Valve current DSS connection rectangular shape Figure C.1 – Example of valve high current windingand measurement equipment disposition Figure C.2 – Transformer windings arrangement Figure C.3 ? Measurement circuit for the in-phase measurement Figure C.4 ? Measurement circuit for the in-opposition measurement Figure C.5 – Measurements and comparison with the simulations madeby finite element metho. Figure 7 – Typical transductor regulating curve (with max voltage drop at zero control cu. Figure?6?– Leakage fields for a three winding transformer with loosely coupled double-tie. Figure?4?– Leakage fields for a three-winding transformer with decoupled valve windings Figure?5?– Leakage fields for a three winding transformer with loosely coupled double con. Annex J (normative) Correlation between IEC 61378-1 and IEC 6 ratings Bibliography Figures Figure?1 – B6U or DB 6 pulse double bridge connection Figure?2 – DSS 6 pulse connection Figure?3?– Leakage fields for a three-winding transformerwith closely coupled valve windi. Annex I (informative) Phase displacement connections and terminal indicationsof converte. Annex H (informative) Determination of the transformer voltage ratio and phase displacem. Annex G (informative) Short-circuit measurements of rectifier transformers equippedwith.
Annex C (informative) Current sharing measurement in high current valve windings Annex D (informative) Examples of duty cycles Annex E (informative) Guidelines for design review Annex F (informative) Determination of loss in transformer tank due to magnetic field. Annex B (informative) Short-circuit test currents and load losses in transformersfor sin. 6.6 Voltage drops in transformers and reactors 7 Tests for converter transformers 7.1 General 7.2 Measurement of commutating reactance and determination of the inductive voltage drop 7.3 Measurement of voltage ratio and phase displacement 7.4 Dielectric tests 7.5 Load loss test 7.6 Temperature rise tests 8 On load noise level with transductors and/or IPT Annex A (informative) Determination of transformer service load loss at rated non-sinuso. 6.5 Losses in interphase transformers, current-balancing reactors, series-smoothing react. 标准目录：Document Contents CONTENTS FOREWORD 1 Scope 2 Normative references 3 Terms, definitions and acronyms 3.1 Terms and definitions 3.2 Acronyms 4 Classification 4.1 General 4.2 Normal service conditions 4.3 Provision for unusual service conditions 5 Ratings 5.1 General 5.2 Rated power at rated frequency and load capability 5.3 Rated and service voltages 5.4 Rated current 5.5 Phase displacement and terminal identification for three-phase transformer 5.6 Rating plate 5.7 Units with tertiary windings loaded with filter and compensation 5.8 On load tap-changers 6 Load loss and voltage drop in transformers and reactors 6.1 General 6.2 Determination of transformer load loss under distorted current loading 6.3 Current sharing, losses and hot spot in high current windings 6.4 Effect of geometrical winding arrangement and magnetic coupling between windings on t.
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