GB/T 32524.2-2016Acoustics—Determination of sound power level and directivity character of power capacitor using sound pressure—Part 2: Engineering methods for an essentially free field over a reflecting plane (English PDF)
声学 声压法测定电力电容器单元的声功率级和指向特性 第2部分：反射面上方近似自由场的工程法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 24, 2016
Implementation date
September 1, 2016
Scope
GB/T 32524.2-2016 is the English-translated version of 声学 声压法测定电力电容器单元的声功率级和指向特性 第2部分：反射面上方近似自由场的工程法.
GB/T 32524.2-2016 is the Chinese standard "Acoustics—Determination of sound power level and directivity character of power capacitor using sound pressure—Part 2: Engineering methods for an essentially free field over a reflecting plane".
Its scope clause reads: This part of GB/T 32524 specifies that the power capacitor unit (hereinafter referred to as the capacitor unit) is approximately free on top of a reflective surface The method of determining the sound power level of the capacitor unit by the sound pressure level measured on the measurement surface surrounding the capacitor unit, Part of the measurement of the uncertainty in line with GB/T 19052 engineering level (2) requirements.
The frequency range of this part is to include a frequency band with a center frequency of 125Hz ~.2000Hz or a center frequency of 100Hz ~ 3150Hz 1/3 times the frequency band, according to the need, the frequency range can be expanded or reduced, but the measurement environment should meet the frequency range requirements.
This part applies to the nominal voltage 1kV and above the AC filter capacitors, DC filter capacitors, shunt capacitors, other electricity Force capacitors can be specified with this section. Its clauses include normative reference documents; terms and definitions.
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Document preview — GB/T 32524.2-2016
National Standard of the People's Republic of China
- ICS
- 17.140
- Classification
- A 59
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 normative reference document
- 3 Terms and definitions
- 4 Test environment and requirements
- 5 Equipment and equipment requirements
- 7 Capacitor unit loading
- 8 Measuring surface and measuring point position
- 9 Determination of sound power level
- 12 Test Report
- Appendix A (normative appendix) Acoustic environment identification method
- Appendix B (normative appendix) Calculate A-weighted sound power level with 1/3 octave sound power level
- Appendix C (normative appendix) sound power level under standard weather conditions
- Appendix D (informative) Guidelines for measuring uncertainty
- Appendix E (informative) Capacitor unit Sound power level and pointing characteristics Measurement record table
1 Scope
This part of GB/T 32524 specifies that the power capacitor unit (hereinafter referred to as the capacitor unit) is approximately free on top of a reflective surface
The method of determining the sound power level of the capacitor unit by the sound pressure level measured on the measurement surface surrounding the capacitor unit,
Part of the measurement of the uncertainty in line with GB/T 19052 engineering level (2) requirements.
The frequency range of this part is to include a frequency band with a center frequency of 125Hz ~.2000Hz or a center frequency of 100Hz ~
3150Hz 1/3 times the frequency band, according to the need, the frequency range can be expanded or reduced, but the measurement environment should meet the frequency range requirements.
This part applies to the nominal voltage 1kV and above the AC filter capacitors, DC filter capacitors, shunt capacitors, other electricity
Force capacitors can be specified with this section.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 3241 electroacoustics octave and fractional octave filters
GB/T 3767-2016 Acoustic sound pressure level measurement Noise source Sound power level Harmony energy level Approximate free field on the reflection surface
Process method
Electroacoustics - Sound level gauges - Part 1. Specifications
GB/T 4129-2003 Acoustics Performance and calibration requirements for standard sound sources for sound power level measurement
GB/T 6882 Acoustic vocal pressure method for the determination of noise sources Sound power level Anechoic chamber and semi-anechoic chamber precision method
GB/T 15173 electroacoustic sound calibrator
GB/T 16538 Acoustic vocal pressure method for the determination of noise source sound power level field comparison method
High voltage test technology - Part 1. General definitions and test requirements GB/T GB/T 19052 Guidelines for the drafting and presentation of noise noise test specifications for acoustic machines and equipment radiation
GB/T 20993 DC Filter Capacitor and Neutral Bus Impact Capacitor for HVDC System
GB/T 20994 HVDC system with parallel capacitors and AC filter capacitors
Safety rules for electrical safety - Part
3 terms and definitions
The following terms and definitions apply to this document.
3.1 Sound pressure
The difference between instantaneous pressure and static pressure.
Note. The unit is Pascal (Pa).
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.
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