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GB/T 10069.1-2006: Measurement of airborne noise emitted by rotating electrical machines and the noise limits -- Part 1: Method for the measurement of airborne noise emitted by rotating electrical machines Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 10069.1: Historical versions
Similar standardsGB/T 10069.1-2006: Measurement of airborne noise emitted by rotating electrical machines and the noise limits -- Part 1: Method for the measurement of airborne noise emitted by rotating electrical machines---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT10069.1-2006 GB NATIONAL STANDARD ICS 29.160.01 K 20 Replacing GB/T 10069.1-1988, GB/T 10069.2-1988 Measurement of the airborne noise emitted by rotating electrical machines and the noise limits - Part 1.Method for the measurement of airborne noise emitted by rotating electrical machines (ISO 1680.1999, MOD) Issued on. APRIL 30, 2006 Implemented on. DECEMBER 01, 2006 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 Introduction... 4 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 8 4 Description of machinery family... 11 5 Sound power determination... 12 6 Installation and mounting conditions... 15 7 Operating conditions... 17 8 Measurement uncertainty... 18 9 Determination of the emission sound pressure level... 19 10 Indication of noise emission quantities determined in accordance with this part... 20 11 Information to be recorded... 21 12 Information to be reported... 21 13 Declaration and verification of noise emission values (if required)... 22 Appendix A (Normative) Overview of standards for the determination of sound power levels of machines and equipment... 24 Appendix B (Normative) Example of a dual-number declaration for rotating electrical machines... 27 Appendix C (Normative) Specific rules for simplifying measuring points in the context of an approximate free field... 28 Appendix D (Normative) Procedure for testing the increment of electrical machine load noise by vibration velocity method... 30ForewordGB/T 10069 “Measurement of the airborne noise emitted by rotating electrical machines and the noise limits” is currently composed the following two parts. - Part 1.Measurement of the airborne noise emitted by rotating electrical machines and the noise limits - Part 1.Method for the measurement of airborne noise emitted by rotating electrical machines; - Part 2.Measurement of the airborne noise emitted by rotating electrical machines and the noise limits - Part 2.Noise limit. This part is part 1, which replaces GB/T 10069.1-1988 “Engineering method for the measurement of airborne noise” AND GB/T 10069.2-1988 “Survey method for the measurement of airborne noise” from the date of implementation. This part, through modification, adopts the ISO 1680.1999 “Acoustics - Test code for the measurement of airborne noise emitted by rotating electrical machines”. The contents are basically consistent. BUT in this part, it adds only the appendix on the provisions for simplifying measuring points in the context of an approximate free field and the appendix of testing the load noise with vibration speed method. Appendix A ~ Appendix D are normative. This part was proposed by AND shall be under the jurisdiction of the National Standardization Technical Committee on Rotary Motor (SAC/TC 26). The drafting organizations of this part. Shanghai Electric Institute of Science and Technology, Guangzhou Electric Institute of Science and Technology, Harbin Institute of Electrical Motor, CCRI Shanghai Branch Test Center, Shanghai Institute of Aerospace Measurement and Control Technology, Beijing Bijie Motor Co., Ltd., Hebei Motor Co., Ltd., Chongqing Sailimeng Motor Co., Ltd., Anhui Wannan Motor Co., Ltd., Zhejiang Jinlong Motor Technology Co., Ltd. The drafters of this part. Chen Ye shao, Shi Qingyuan, Zhong Zhigang, Zhang Jian, Luo Xueping, Mu Jingkun, Cai Jiagang, Bu Yunjie, Lin Longshou, Pan Xudong, Ye Jinwu, Zhang Zhenlan. This Standard replaces the standard previously issued as follows. - GB/T 2806-1981; - GB/T 10069.1-1988, GB/T 10069.2-1988.1 ScopeThis part specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration, and verification of the noise emission characteristics of rotating electrical machines.2 Normative referencesThe provisions in following documents become the provisions of this part through reference in GB/T 10069.For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this part; however, parties who reach an agreement based on this part are encouraged to study if the latest versions of these documents are applicable.3 Terms and definitionsFor the purposes of this part, the following terms and definitions apply.4 Description of machinery familyThis part is applicable to self-standing rotating electrical machines, i.e., motors and generators (DC and AC machines), without any limitation on the output or voltage, AND with any linear dimensions.5 Sound power determinationThe usable basic standards are mainly distinguished by the following.6 Installation and mounting conditionsThe highest natural frequency of the system consisting of the support device and the machine under test shall be lower than 1/3 of the frequency corresponding to the lowest rotational speed of the machine. The mass of the support shall be at least twice that of the machine under test.7 Operating conditionsThe machine under test shall be monitored over the whole range of operating speeds to determine the speed generating the maximum noise level. To find this level, a low speed variation shall be applied. This condition shall be used for the noise test and the speed reported in the results.8 Measurement uncertaintyThe measurement uncertainty is dependent on the reproducibility standard deviation as given in Table 2 and the expected confidence level. For example, when the sound power level is in normal distribution AND the confidence level is 90%, then the true value of the sound power of this sound source will be within the range of the measured value ± 1.645σR; when the confidence level is 95%, it will be within the range of the measured value ± 1.95σR.9 Determination of the emission sound pressure levela The atmospheric conditions had been considered in the standard wherein the level 1 method is specified. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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