1、INTERNATIONALSTANDARDIEC60076-10First edition2001-05Power transformers Part 10:Determination of sound levelsTransformateurs de puissance Partie 10:Dtermination des niveaux de bruitReference numberIEC 60076-10:2001(E)COPYRIGHT 2002;International Electrotechnical Commission Document provided by IHS Li
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12、943408104,User=,10/17/200202:56:14 MDT Questions or comments about this message:please call the DocumentPolicy Management Group at 1-800-451-1584.-|-2 60076-10 IEC:2001(E)CONTENTSFOREWORD.3INTRODUCTION.51Scope.72Normative references.73Definitions.84Instrumentation and calibration.95Choice of test me
13、thod.96Load conditions.96.1General.96.2No-load current and rated voltage.106.3Rated current and short-circuit voltage.106.4Reduced-load current.117Principal radiating surface.117.1General.117.2Transformers with or without cooling auxiliaries,dry-type transformers in enclosuresand dry-type transforme
14、rs with cooling auxiliaries inside the enclosure.117.3Cooling auxiliaries mounted on a separate structure spaced 3 m away fromthe principal radiating surface of the transformer.117.4Dry-type transformers without enclosures.118Prescribed contour.129Microphone positions.1210Calculation of the area of
15、the measurement surface.1210.1 Measurements made at 0,3 m from the principal radiating surface.1210.2 Measurements made at 2 m from the principal radiating surface.1310.3 Measurements made at 1 m from the principal radiating surface.1310.4 Measurements on test objects where safety clearance consider
16、ations requirea measurement distance which for all or part of the prescribed contour(s)exceeds the provisions of 10.1 to 10.3.1311Sound pressure method.1311.1 Test environment.1311.2 Sound pressure level measurements.1611.3 Calculation of average sound pressure level.1612Sound intensity method.1812.1 Test environment.1812.2 Sound intensity level measurements.1812.3 Calculation of average sound intensity level.1813Calculation of sound power level.1914Addition of no-load and load current sound pow
