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BSI PD IEC TR 63396:2021

BSI PD IEC TR 63396:2021

$142.49

Noise measurement method on power capacitors

Published By Publication Date Number of Pages
BSI 2021 26
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The object of this Technical Report is to document a method for the sound pressure level measurement on power capacitor units, by which the sound power level of power capacitor units is determined.

This method is applicable to shunt capacitor units and AC filter capacitor units for AC power systems with a nominal voltage of 1 kV and above and a frequency of 50 Hz or 60 Hz.

This method also applies to the DC filter capacitor units.

Other measurements on power capacitor units can be implemented with reference to this method.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms and definitions
12 4 Noise measurement
4.1 Power injection conditions for capacitors
4.1.1 Current injection conditions for shunt capacitor units
13 4.1.2 Current injection conditions for AC filter capacitor units
4.1.3 Current and voltage injection conditions for DC filter capacitor units
4.2 Measuring environment
4.3 Characteristics for basic acoustic instruments
4.4 Arrangement of the power capacitors
14 4.5 Arrangement of the microphone
4.6 Measurement on sound pressure levels
4.6.1 General
4.6.2 Calculation of average sound pressure level at measurement surface
15 Tables
Table 1 – Test acceptance criteria
16 5 Measurement of uncertainty
17 6 Test report
18 Annex A (informative)Microphone arrangement on noise measurementsurface of power capacitors
A.1 Measurement surface
Figures
Figure A.1 – Schematic diagram of installation of the test object
19 A.2 Measurement positions and orientation of microphone
Figure A.2 – Microphone positions on the parallelepiped measurement surface
Table A.1 – Coordinates of measurement positionson the parallelepiped measurement surface
20 Annex B (informative)Typical test circuit for power capacitor noise measurement
B.1 Shunt and AC filter power capacitor noise test circuit
B.2 DC filter power capacitor noise test circuit
Figure B.1 – Schematic diagram of shunt and AC filter power capacitor noise test circuit
Figure B.2 – Schematic diagram of DC filter power capacitor noise test circuit
21 Annex C (informative)Typical format of power capacitor noise test report
C.1 Basic information in the typical test report
C.2 Sound level meter parameters
C.3 Test parameter configuration
22 C.4 Noise measurement data
Table C.1 – Power supply loaded to the test object
Table C.2 – Background A-weighted sound pressure levelof each measuring point in decibels
Table C.3 – A-weighted sound pressure level of each measuring point in decibels
23 C.5 Meteorological conditions of the test environment
C.6 Measuring personnel and time
24 Bibliography

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BSI PD IEC TR 63396:2021
$142.49