ChinaAutoRegs\uff5cGB 10069.3-2008 \u82f1\u6587\u7248\/English\/\u7ffb\u8bd1\/\u65cb\u8f6c\u7535\u673a\u566a\u58f0\u6d4b\u5b9a\u65b9\u6cd5\u53ca\u9650\u503c \u7b2c3\u90e8\u5206\uff1a\u566a\u58f0\u9650\u503c
\nMeasurement of Airborne Noise Emitted by Rotating Electrical Machines and the Noise Limits – Part 3: Noise Limits<\/p>\n
\n1 SCOPE<\/p>\n
This part of GB 10069.3-2008:
\n– specifies test methods for the determination of sound power level of rotating electrical machines;
\n– specifies maximum A-weighted sound power levels for factory acceptance testing of network-supplied, rotating electrical machines in accordance with GB 755, having methods of cooling according to GB\/T 1993-1993 and degrees of protection according to GB\/T 4942.1-2006, and having the following characteristics:
\n\u2022standard design, either a.c. or d.c., without additional special electrical, mechanical, or acoustical modifications intended to reduce the sound power level;
\n\u2022 rated output from 1 kW (or kVA) up to and including 5,500 kW (or kVA);
\n\u2022 rated speed not greater than 3,750 r\/min.
\n– provides guidance for the determination of noise levels for cage induction motors supplied by converters.
\nThe object of this standard is to determine maximum A-weighted sound power levels, LWA in decibels, dB (A), for airborne noise emitted by rotating electrical machines of standard design, as a function of power, speed and load, and to specify the method of measurement and the test conditions appropriate for the determination of the sound power level of the machines to provide a standardized evaluation of machine noise up to the maximum specified sound power levels. This standard does not provide correction for the existence of tonal characteristics.
\nSound pressure levels at a distance from the machine may be required in some applications, such as hearing protection programs. Information is provided on such a procedure in Clause 7 based on a standardized test environment.
\nNOTE 1: This standard recognizes the economic reason for the availability of standard noise-level machines for use in non-critical areas or for use with supplementary means of noise attenuation.
\nNOTE 2: Where sound power levels lower than those specified in Tables 1 or 2 are required, these should be agreed between the manufacturer and the purchaser, as special electrical, mechanical, or acoustical design may involve additional measures.<\/p>\n
2 NORMATIVE REFERENCES<\/p>\n
The following Standards contain provisions which, through reference in this part of GB 10069, constitute provisions of this Standard. For dated references, subsequent amendments (corrigenda excluded) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the Standards indicated below. For undated references, the latest edition of the normative documents referred to applies.<\/p>\n
GB 755-2008 Rotating Electrical Machines – Rating and Performance, IEC 60034-1:2004, IDT
\nGB\/T 1993-1993 Cooling methods for rotating electrical machines, eqv IEC 60034-6:1991
\nGB\/T 3768-1996 Acoustics–Determination of sound power levels of noise sources using sound pressure–Survey method using an enveloping measurement surface over a reflecting plane, eqv ISO 3746:1995
\nGB\/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machined (IP Code)-Classification, IEC 60034-5:2000, IDT
\nGB\/T 6881.1-2002 Acoustics–Determination of sound power levels of noise sources using sound pressure–Precision methods for reverberation rooms, idt ISO 3741:1999
\nGB\/T 6881.2-2002 Acoustics–Determination of sound power levels of noise sources–Engineering methods for small, movable sources in reverberant field–Part 1:Comparison method for hard-walled test room, idt ISO 3743-1:1994
\nGB\/T 6881.3-2002 Acoustics–Determination of sound power levels of noise sources-using sound pressure–Engineering methods for small, movable sources in reverberant fields–Part 2: Methods for special reverberation test rooms, idt ISO 3743-2:1994
\nGB\/T 6882-1986 Acoustics–Determination of sound power levels of noise sources– Precision methods for anechoic and semi-anechoic rooms, neq ISO 3745:1977
\nGB\/T 16404.1-1996 Acoustics–Determination of sound power levels of noise sources using sound intensity–Part 1: Measurement at discrete points, eqv ISO 9614-1:1993
\nGB\/T 16404.2-1996 Acoustics–Determination of sound power levels of noise sources using sound intensity–Part 2: Measurement by scanning, eqv ISO 9614-2:1996
\nGB\/T 16538-1996 Acoustics-Determination of sound power levels of noise sources using sound pressure-Survey method using a reference sound source, eqv ISO 3747:1987
\nGB\/T 20161-2006 Cage induction motors when fed from converters application guide, IEC 60034-17:2002, IDT
\nISO 3744 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
\nISO 4871 Acoustics — Declaration and verification of noise emission values of machinery and equipment<\/p>\n
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\n\u4e13\u4e1a\u6e90\u4e8e\u4e13\u6ce8|ChinaAutoRegs \u59cb\u7ec8\u4e13\u6ce8\u4e8e\u673a\u52a8\u8f66\u6807\u51c6\u7ffb\u8bd1\uff01\u8fc4\u4eca\u4e3a\u6b62\u5df2\u7ffb\u8bd1\u4e0a\u5343\u4e2a\u56fd\u5185\u5916\u6c7d\u8f66\u6cd5\u89c4\u6807\u51c6\uff01\u72ec\u5bb6\u6253\u9020\u5343\u4e07\u7ea7\u6c7d\u8f66\u4e13\u4e1a\u672f\u8bed\u5e93\u548c\u8bb0\u5fc6\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
ChinaAutoRegs\uff5cGB 10069.3-2008 \u82f1\u6587\u7248\/Englis … \u7ee7\u7eed\u9605\u8bfb