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GB 10069.3-2008: [GB/T 10069.3-2008] Measurement of airborne noise emitted by rotating electrical machines and the noise limits -- Part 3: Noise limits
GB 10069.3-2008
[GB/T 10069.3-2008] Measurement of airborne noise emitted by rotating electrical machines and the noise limits.Part 3. Noise limits
ICS 29.160
K20
National Standards of People's Republic of China
GB 10069.3-2008/IEC 60034-9.2007
Replace GB 10069.3-2006
Rotating motor noise measuring method and limit
Part 3. Noise limits
(IEC 60034-9.2007, IDT)
Released on.2008-06-19
2009-06-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword I
Introduction II
1 range 1
2 Normative references 1
3 Terms and Definitions 2
4 Test Method 2
5 Test conditions 2
6 sound power level limit 3
7 Determination of noise increase when the inverter is powered 3
8 Sound pressure level measurement 5
9 Sound power value indication and confirmation 5
GB 10069.3-2008/IEC 60034-9.2007
Foreword
Chapter 6 of this section is mandatory and the rest are recommended.
The National Standard for Measuring Methods and Limits of Rotating Motor Noise currently consists of two parts.
--- Part 1. Method for measuring the noise of rotating electrical machines;
--- Part 3. Noise limits.
This part is the third part, this part is equivalent to IEC 60034-9.2007 "Rotating electric machine part 9. noise limit" (4.1 version English
Text version). This part should be in accordance with GB/T 10069.1-2006 "Measurement methods and limits for noise of rotating electrical machines - Part 1
The method is used together.
This part replaces GB 10069.3-2006 "Rotating motor noise measurement method and limit noise limit".
This section is compared with GB 10069.3-2006, the changes are as follows.
--- Increased in the range. Determine the noise of the inverter-driven AC cage induction motor.
--- Added a new Chapter 7. Determining the increase in noise caused by the power supply to the inverter;
--- Added a new Chapter 8. Determination of sound pressure level;
--- The content of Chapter 9 is Chapter 7 of the original standard, but it has also undergone major changes.
--- Single-speed three-phase cage induction motor no-load noise limit Table 2 is expressed by the original power, ranging from 1kW to 400kW, change
In order to use the center height, the range is H90 ~ H560, and the noise limit of the single-speed cage induction motor is reduced.
The load noise increment table 3 is represented by the original motor power and also by the center height.
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Rotating Electric Machine Standardization Technical Committee (SAC/TC26).
This section is responsible for drafting units. Shanghai Electric Apparatus Research Institute (Group) Co., Ltd., Wuxi Huada Motor Co., Ltd., Xi'an Sima Electric
Machine Co., Ltd., Lu'an Jianghuai Motor Co., Ltd., China Shipbuilding Heavy Industry Motor Co., Ltd., Taihao Technology Co., Ltd., Hebei Electric
Machine Co., Ltd., Shandong Huali Motor Group Co., Ltd., Zhejiang Jinlong Motor Co., Ltd., Beijing Bijie Motor Co., Ltd.
Company, China North Locomotive and Rolling Stock Industry Group Yongji Motor Factory, Wolong Motor Co., Ltd., Shanxi Explosion-proof Motor (Group) Co., Ltd.
Division, Xiangtan Electric Machinery Co., Ltd., Weiling Qingjiang Electric Co., Ltd., Shandong Qilu Motor Manufacturing Co., Ltd., Shanghai Electric and Electrical Engineering Division
Technology Co., Ltd.
Participated in the drafting of this section. Harbin Institute of Electrical Machinery, China Electric Apparatus Research Institute, Shanghai Nanyang Electric Co., Ltd., Changjiang Airlines
Yun Group Motor Factory, Lanzhou Electric Motor Co., Ltd., Anhui Wannan Electric Co., Ltd., Hebei Hengshui Electric Co., Ltd., Jiangsu
Zionda Explosion Protection Co., Ltd., Shanghai Qianghui Motor Co., Ltd., Shanghai Magete Motor Co., Ltd., Jiangsu Dazhong Motor Co., Ltd.
the company.
Drafters of this section. Li Xiuying, Hua Ming, Li Anjin, Liu Lihan, Li Baolai, Kang Maosheng, Yang Xiujun, Zhang Wenbin, Ye Jinwu, Zhou Shoulian,
He Zhixue, Meng Fanmin, Yang Shulin, Zhou Linghui, Zhou Guobao, Wu Dezhong, Fu Changhong, Zhong Zhigang.
The previous versions of the standards replaced by this section are.
--- Chapter 32 of GB 755-1981;
---GB 10069.3-1988; GB 10069.3-2006.
GB 10069.3-2008/IEC 60034-9.2007
introduction
The amount of acoustics can be expressed in terms of sound pressure or sound power. The sound power level can be used regardless of the measurement surface and environmental conditions.
The unique expression avoids the need to add some factors to the data when the sound pressure level is used to complicate the expression. Sound power level provides an energy radiation
It measures and facilitates acoustic analysis and design.
GB 10069.3-2008/IEC 60034-9.2007
Rotating motor noise measuring method and limit
Part 3. Noise limits
1 range
This part.
--- A test method for determining the sound power level of a rotating electrical machine.
--- For GB 755, according to the cooling method specified in GB/T 1993-1993 and according to GB/T 4942.1-2006
Rotating electric machine with protection classification and the following characteristics, stipulates the A-weighted sound power under the factory acceptance test method when the grid is powered
Level maximum.
??? Both AC motors and DC motors are standard designs; they are reduced in terms of electrical, mechanical or acoustical aspects.
Except for designs that are specifically modified for sound power levels;
??? Rated output from 1kW (kVA) to 5500kW (kVA);
??? The speed does not exceed 3750r/min.
--- Provides noise level determination guidelines for cage induction motors powered by frequency converters.
The purpose of this part is to specify the maximum noise of the motor's emitted air noise, which is characterized by power, speed and load.
Power stage LWA, in dB(A); and specifies the test method and test conditions for determining the sound power level of the motor, providing motor noise
Whether to meet the assessment criteria for the specified maximum sound power level. This section does not provide corrections to the pure tone characteristics.
In some practical situations, such as hearing protection, a sound pressure level at a distance from the motor is required. This data is tested by Article 7 by standard.
The environment is obtained.
Note 1. This section considers that in consideration of economic factors, standard noise-grade motors that require additional measures in non-critical applications or to reduce motor noise can be used.
Note 2. When it is required to meet the sound power level requirements of Tables 1 and 2, the manufacturer and the buyer must agree, due to special electrical, mechanical or acoustic aspects.
The design may include some additional measurements.
2 Normative references
The terms in the following documents become the provisions of this part by reference to this part of GB 10069. Quotations with dated
And all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouragement is achieved in accordance with this section.
The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this
section.
GB 755-2008 Rotating electrical machine rating and performance (IEC 60034-1.2004, IDT)
GB/T 1993-1993 Rotating electric machine cooling method (eqv IEC 60034-6.1991)
GB/T 3768-1996 Acoustic sound pressure method for the determination of sound source sound power level
(eqv ISO 3746.1995)
GB/T 4942.1-2006 Degree of protection (IP code) for the overall structure of rotating electrical machines (IEC 60034-5.2000, IDT)
GB/T 6881.1-2002 Determination of noise source sound power level reverberation chambers by acoustic sound pressure method (idt ISO 3741.1999)
GB/T 6881.2-2002 Acoustic sound pressure method for the determination of noise source sound power level reverberation field small and medium mobile sound source engineering method
Part 1. Hard wall test room comparison method (idt ISO 3743-1.1994)
GB/T 6881.3-2002 Acoustic sound pressure method for the determination of noise source sound power level reverberation field small and medium mobile sound source engineering method
Part 2. Dedicated Reverberation Test Room Method (idt ISO 3743-2.1994)
GB/T 6882-1986 Acoustic noise sources - Determination of sound power level - s. s.
1977)
GB 10069.3-2008/IEC 60034-9.2007
GB/T 16404.1-1996 Determination of sound power levels of noise sources - Part 1
(eqv ISO 9614-1.1993)
GB/T 16404.2-1996 Determination of sound power levels of noise sources - Part 2. Scanning method (eqv ISO 9614-2.
1996)
GB/T 16538-1996 Acoustic sound pressure method for the determination of noise source sound power level using standard sound source simple method (neq ISO 3747.
1987)
GB/T 20161-2006 Inverter power supply cage induction motor application guide (IEC 60034-17.2002, IDT)
ISO 3744 Acoustic Sound Pressure Method for Determining the Free Field Above the Reflecting Surface of Sound Power Level of Noise Sources
ISO 4871 Identification and verification of noise emission values for acoustic machines and equipment
3 Terms and definitions
This section uses the terms and definitions listed in the normative references and below.
3.1
LW
3.2
LP
The ratio of the square of the sound pressure to the square of the reference sound pressure is taken as the base 10 logarithm multiplied by 10, in decibels [P0=20??Pa (2??10)
-5Pa)].
4 test methods
4.1 Measurement of sound pressure level and calculation of sound power level of the motor, if not referring to any of 4.3 or 4.4 below,
According to the provisions of ISO 3744.
Note. It is recommended to use a hemispherical method with a shaft center height of up to 180 mm, a parallelepiped method with a shaft center height of 355 mm or more, and a center height between the two methods.
Yes.
4.2 For the relevant results obtained by testing according to 4.1, the maximum sound power level shall not exceed the requirements of Table 1 and Table 2 or Table 3.
4.3 When appropriate, it can also be in accordance with GB/T 6881.1-2002, GB/T 6881.2-2002, GB/T 6881.3-2002,
One of the precision or engineering-level precision methods such as GB/T 6882-1986, GB/T 16404.1-1996 or GB/T 16404.2-1996
The sound power level is measured.
4.4 Simpler but less accurate can be in accordance with the methods specified in GB/T 3768-1996 or GB/T 16538-1996, especially when the ring
When conditions cannot meet the requirements of ISO 3744 (such as large motors).
However, according to the verification in this section, unless the value is determined according to the method of GB/T 3768-1996 or GB/T 16538-1996
The error has been corrected as it should be, otherwise the sound level values of Tables 1 and 2 should be reduced by 2 dB.
4.5 If tested under rated load conditions, it is best to use the method of GB/T 16404.1-1996. Of course, you can also load the motor and
The add-on performs sound insulation or places the load outside of the test environment.
5 test conditions
5.1 Motor installation
5.1.1 Preparation
Care should be taken to minimize the radiation and transmission of structural noise from all installed components, including the foundation. Smaller motors can be used
Flexible mounting; large motors are usually only tested under rigid mounting conditions.
The motor under test shall be rigidly mounted under load.
GB 10069.3-2008/IEC 60034-9.2007
5.1.2 Flexible installation
The natural frequency of the system consisting of the supporting device and the motor under test shall be less than one quarter of the corresponding frequency of the minimum speed of the motor.
The effective mass of the elastic support shall not be greater than 1/10 of the machine under test.
5.1.3 Rigid installation
The motor must be rigidly mounted on a surface suitable for the size of the motor (eg, feet and flanges as specified in the manufacturer's instructions).
The motor should not be subject to incorrect gasket adjustments resulting in additional mounting stress.
5.2 Test operation conditions
The test operating conditions must be as follows.
a) The motor under test shall be operated at rated voltage, rated frequency or rated speed and with specified excitation current (when appropriate). Check
The accuracy of these instruments is 1% or higher.
1) The standard load condition is no load, except for the series motor.
2) When required, the motor should be operated under an approved load condition.
b) The position of the motor under test shall produce the maximum noise at the specified operating conditions.
c) For AC motors, the waveform and unbalance of the power supply system shall comply with the requirements of 7.2 of GB 755-2008.
Note. Any voltage (and current) waveform distortion and unbalance increase will result in increased noise.
d) The synchronous motor shall be operated under excitation with a power factor of 1, or when the large motor is operated as a generator.
e) The generator shall be operated in the state of the motor or may be driven to the rated state and the open circuit voltage is equal to the rated voltage.
run.
f) Multi-speed motors must evaluate the range of all operating speeds to meet the requirements.
g) Reversible motors shall operate in both forward and reverse directions unless there is no difference in sound power levels during bidirectional operation. Single steering motor should be based on it
Design direction test.
6 sound power level limits
The sound power level measured by the rotating electrical machine under the conditions specified in Clause 5 shall not exceed the following specified values.
a) Motors other than those specified in b) must be in accordance with Table 1 for no-load operation.
b) With IC01, IC11, IC21, IC411, IC511, or IC611 cooling mode, 50Hz or 60Hz, rated output is not less than
Single-speed three-phase cage induction motor with 1.0kW and no more than 1000kW.
??? The operation of no-load operation shall be as specified in Table 2;
??? The rated value must be the sum of the values specified in T...