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GB/T 5390-2013 English PDF

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GB/T 5390-2013: Forestry and garden machinery -- Noise test code for portable hand-held machines with internal combustion engine -- Engineering method (Grade 2 accuracy)
Status: Valid

GB/T 5390: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 5390-2013	English	594	Add to Cart	3 days [Need to translate]	Forestry and garden machinery -- Noise test code for portable hand-held machines with internal combustion engine -- Engineering method (Grade 2 accuracy)	Valid	GB/T 5390-2013
GB/T 5390-2008	English	879	Add to Cart	6 days [Need to translate]	Forestry machinery -- Noise test code for portable hand-held machines with internal combustion engine -- Engineering method (Grade 2 accuracy)	Obsolete	GB/T 5390-2008
GB/T 5390-1995	English	239	Add to Cart	2 days [Need to translate]	Portable chain saws--Measurement at the operatorposition of air-borne noise	Obsolete	GB/T 5390-1995
GB 5390-1985	English	199	Add to Cart	2 days [Need to translate]	Gasoline powered chain saws--Measurement at the operatorposition of air-borne noise from chain saws	Obsolete	GB 5390-1985

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Basic data

Standard ID	GB/T 5390-2013 (GB/T5390-2013)
Description (Translated English)	Forestry and garden machinery -- Noise test code for portable hand-held machines with internal combustion engine -- Engineering method (Grade 2 accuracy)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	B95
Classification of International Standard	65.060.80
Word Count Estimation	30,364
Older Standard (superseded by this standard)	GB/T 5390-2008
Quoted Standard	ISO 354; ISO 3744; ISO 4871-1996; ISO 6531; ISO 7112; ISO 7293; ISO 8893; ISO 11201; IEC 61672-1
Adopted Standard	ISO 22868-2011, IDT
Regulation (derived from)	National Standards Bulletin 2013 No. 27
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard provides a portable hand-held operation forestry and garden machinery Determination A-weighted sound power level and ear noise-powered internal combustion engine. This standard applies to chain saws, brush cutters, lawn mowers, power pole pr

GB/T 5390-2013: Forestry and garden machinery -- Noise test code for portable hand-held machines with internal combustion engine -- Engineering method (Grade 2 accuracy)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Forestry and garden machinery. Noise test code for portable hand-held machines with internal combustion engine. Engineering method (Grade 2 accuracy) ICS 65.060.80 B95 National Standards of People's Republic of China Replacing GB/T 5390-2008 Forestry and garden machinery with an internal combustion engine powered Portable hand-held operating machinery noise test code Engineering method (Grade 2 accuracy) combustionengine-Engineeringmethod (Grade2accuracy) (ISO 22868.2011, IDT) Issued on. 2014-10-01 2013-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 Parameters measured 2 4 Determination of sound power levels of 2 5 Ear noise measuring 6 3 7 Test and operating conditions 4 8 Test Report 4 Labeling and inspection of noise values \u200b\u200b9 6 Appendix A (normative) Measurement conditions saws 7 Appendix B (normative) Measurement conditions cutters and mower 10 Annex C (normative) Measurement conditions power pole pruning saws 14 Annex D (normative) Measurement conditions hedge trimmers 17 Appendix E (normative) Measurement conditions leaf blowers/leaf suction machine 20 Hydraulic brake Annex F (informative) installed in the chain saw guide plate cutting load simulation example 23 Annex G (informative) 2007 - Year 2008 chain saw, brush cutters and lawn mowers RR 24 Test summary Appendix H (informative) according to EU Directive 2000/14/EC determination of outdoor machinery noise A-weighted sound power 25

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 5390-2008 "forestry machinery - Portable power machinery noise test code - Engineering method (Grade 2 accuracy)," Compared with GB/T 5390-2008, the main technical changes are as follows. --- The standard Chinese name from "forestry machinery - Portable power machinery noise test code - Engineering method (Grade 2 accuracy)" was changed to "Forestry and garden machinery internal combustion engine driven portable hand-held operating machinery noise test code - Engineering method (Grade 2 Fine degree)"; --- Modify the scope of the standard, from "This standard applies to chain saws, brush cutters and lawn mowers and other portable forestry machinery" to the " Standard applies to chain saws, brush cutters, lawn mowers, power pole pruning saws, hedge trimmers and leaf blowers/leaf suction machines and other portable forest And garden machinery industry "(see Chapter 1, Chapter 1 of the 2008 edition); --- Modify the contents of the "Normative references" (see Chapter 2, Section 2 of the 2008 edition); --- Modified on the "correction factor K2A" requirements (see Chapter 5, 2008 edition of the Chapter 5); --- Remove the "concrete floor covered with sawdust requirements" of content (version 6.4 in 2008); --- Chapter 7 increased the standard applicable to this appendix all machines test conditions require (see Chapter 7); --- Chapter 8 adds applies to this standard appendix "test report" of all machines, and the original standard in Appendix A, attached Engineeringmethodsforanessentialyfreefieldoverareflectingplane) 1996 Declaration and verification of acoustic noise emission values \u200b\u200bof machinery and equipment of (Acoustics-Declarationandverifi-. ISO 4871 cationofnoiseemissionvaluesofmachineryandequipment) ISO 6531 Forestry machinery - Portable chain saw vocabulary (Machineryforforestry-Portablechain-saws-Vocab- ulary) ISO 7112 Forestry machinery - Portable brush cutters and lawn mowers vocabulary (Machineryforforestry-Portablebrush- cuttersandgrass-trimmers-Vocabulary) ISO 7293 Forestry machinery - Portable chain saw engine performance and fuel consumption (Forestrymachinery-Portablechain saws-Engineperformanceandfuelconsumption) ISO 8893 Forestry machinery - Portable brush cutters and lawn mower engine performance and fuel consumption (Forestrymachinery- Portablebrush-cuttersandgrass-trimmers-Engineperformanceandfuelconsumption) A reflecting plane ISO 11201 machinery and equipment noise emission and other operating positions specified position measuring emission sound pressure levels Free field of Engineering method (Acoustics-Noiseemittedbymachineryandequipment-Determinationof emissionsoundpressurelevelsataworkstationandatotherspecifiedpositionsinanessentialyfree fieldoverareflectingplanewithnegligibleenvironmentalcorrections) IEC 61672-1 electric acoustic sound level meters - Part 1. Specification (Electroacoustics-Soundlevelmeters-Part 1. Specifications)

3 Terms and Definitions

ISO 6531 and ISO 7112 define the terms and definitions apply to this document. Parameters measured 4 A weighted and (if necessary) the time average sound pressure level of each frequency band measured shall comply with the requirements of ISO 3744 and ISO 11201 requirements. A weighted and each band (if needed) sound power levels of noise and ear.

5 Determination of sound power level

According to ISO and modifications listed below or increased requirements for 3744 Determination of sound power levels. a) a microphone arranged six microphone positions specified in Table 1 and Figure 1. Note 1. The test data indicate that the use of measurement results of the arrangement specified in ISO 3744 and 10 microphones arrangement difference is small. b) measuring the diameter of the surface must be r≥2d0, namely the hemispherical 4m, d0 is defined by the reference position in the cartridge and the decision on the ground Set, see Figure 1. For a larger radius is measured, the measured radius should be 4m, 6m or 8m. If it is guaranteed and with radius Test results error 4m Hemisphere within 0.5dB, the surface can reduce the measurement radius r. Note 2. In the anechoic chamber, if not reach 4m radius of space, reduce the measurement surface radius. c) fixed specific type of machine, orientation and testing requirements of this standard shall comply with the relevant provisions of Appendix. d) limit the environmental conditions in the measuring instrument shall be specified by the manufacturer within. Ambient temperature should be in the range of -10 ℃ ~ 30 ℃, wind speed should be Less than 5m/s. When the wind speed exceeds 1m/s, you should use the microphone windscreen. e) according to IEC 61672-1 requirements using integrated average sound level measurements; or use prescribed sound level meter IEC 61672-1 "Slow" time weighting characteristics measurement block. f) ISO 3744.2010 specified in Appendix A correction factor K2A shall not exceed 2dB. Explanation. A --- reference box; d0 --- feature source size; r --- hemispherical radius ≥2d0. Figure 1 Microphone positions hemispherical surface Table 1 microphone position coordinates Number xyz 0.65r -0.65r -0.65r 0.65r -0.28r 0.28r 0.65r 0.65r -0.65r -0.65r 0.65r -0.65r 0.38r 0.38r 0.38r 0.38r 0.71r 0.71r Note. the contents of the location of the microphone See also Appendix H.

6 Determination of ear noises

6.1 Requirements According to ISO 11201 and the following modifications or additional requirements listed in ear noise measurement. a) fixed specific type of machine, orientation and testing requirements of this standard shall comply with the relevant provisions of Appendix. B) When the spot to the surface of natural grass or similar plants, error of measurement reproducibility of the results is often more than 2 level precision measurement Site of the ground should be consistent with the provisions of 6.2 or 6.3. In case of dispute, the determination should be performed outdoors and artificial ground surface (see 6.2). c) limit the environmental conditions in the measuring instrument shall be specified by the manufacturer within. Ambient temperature should be in the range of -10 ℃ ~ 30 ℃. Winds should Less than 5m/s. When the wind speed exceeds 1m/s, you should use the microphone windscreen. d) the use of prescribed IEC 61672-1 integrated average sound level measurements; or by using a sound level meter IEC 61672-1 regulations "Slow" time weighting characteristics measurement block. e) the relative position and orientation of the microphone and the machine should be consistent with the corresponding provisions of this standard appendix. 6.2 Artificial ground surface requirements Accordance with the provisions of ISO 354 to measure the absorption coefficient of the artificial ground surface shall be in accordance with Table 2. Table 2 absorption coefficient Frequency/Hz sound absorption coefficient error 0.1 0.3 0.5 0.7 0.8 0.9 ± 0.1 ± 0.1 ± 0.1 ± 0.1 ± 0.1 ± 0.1 Artificial ground surface should be located in the center of the test environment, and a hard place and have a sound basis for the reflection characteristic of the surface, its size should not be less than 3.6m × 3.6m. To meet the requirements of acoustic characteristics, the support structure may be employed in place sound absorbing material. Acoustic testing should be avoided Material is compressed. 6.3 Requirements ground Correction factor K1A / dB Found LpAX / dB Idle (Id) Full load (Fl) a High idle (Ra) a X specific operating conditions sound pressure level is calculated as follows. LpAX = L'pAX-K1A Where. K1A --- ISO 11201 specified correction factor. a different machine types corresponding to different test procedures (see the corresponding appendix). Table 4 A-weighted sound power level measurement --- A-weighted sound pressure level meter register Reference operating conditions Engine speed/ (R/min) L'pA1 / dB L'pA2 / dB L'pA3 / dB L'pA4 / dB L'pA5 / dB L'pA6 / dB L'pA / dB Full load (Fl) a High idle (Ra) a Full load (Fl) a High idle (Ra) a Full load (Fl) a High idle (Ra) a Full load (Fl) a High idle (Ra) a Full load (Fl) a High idle (Ra) a average SPL L'pAX Full load (Fl) L'pAFl = dB High idle (Ra) L'pARa = dB L'pA1 ~ L'pA6 average properties at the location of each of the microphone time measured sound pressure level. L'pA according to ISO 3744.2010 Chinese average sound pressure level (12) calculation. L'pAX L'pA is the arithmetic mean of the specific operating conditions. Specific operating conditions of L'pA only when required, parties are given in the report. During the test, the data can automatically be averaged. a different machine types corresponding to different test procedures (see the corresponding appendix). Table 5 A-weighted sound power level sound power data measured --- Operating conditions The average sound pressure level LpAX / dB Correction factor K1A / dB Surface sound pressure LpAfX / dB Surface level Ls / dB Sound power level LWAX / dB Full load (Fl) a L'pAFl = High idle (Ra) a L'pARa = Environmental correction factor K2A = dB L'pAX L'pA is the arithmetic mean of the specific operating conditions. Specific operating conditions X surface sound pressure level is calculated as follows. LpAfX = L'pAX-K1A-K2A Where. L'pAX --- specific operating conditions of L'pAId, L'pAFl or L'pARa; K1A --- ISO 3744. in 2010 8.2.3 specified background noise correction factor; K2A --- environmental correction factor, this is equal to zero (see Chapter 5 of f). Specific operating conditions X sound power level is calculated as follows. LWAX = LpAfX Ls Where. Ls = 10lg s0 In decibels (dB); s0 = 1m2; S --- hemispherical surface area, measured in square meters (m2). a different machine types corresponding to different test procedures (see the corresponding appendix). Labeling and inspection 9 noise values Calibration products noise indicator is the manufacturer responsibility and obligation. The manufacturer shall fulfill that obligation, so that in accordance with ISO 4871.1996 Annex A to validate their published data. Manufacturing plant Double the number of home applications (see ISO 4871.1996 Annex B) indicate a full condition A-weighted equivalent sound pressure level. Manufacturers use a single data (see ISO 4871.1996 Annex B) indicate a full condition equivalent A-weighted sound power level. Note 1. The announced value of sound power levels are given in Annex H. If desired, the noise level should be provided idling, full-load and high-speed operation and other working conditions (A-weighted sound power level and A-weighted noise ear). When the noise data indicated, should be marked in accordance with this standard and reference measurement main criteria (ISO 3744 and/or ISO 11201), and explain Its measurement error generated. When the label is uncertainty, uncertainty factor (K) is affected by the value of the standard deviation σt, σt can be reproduced by the standard deviation σR and products Standard deviation σp composition. Given in the Appendix of the reference value σR, σp is determined by the change in the manufacturer and product experience. Note 2. The part of the machine in 2007 - RR test results in 2008 were summarized in Appendix G. It should give information about noise measured value in the sales document.

Appendix A

(Normative) Measurement conditions Chainsaws A.1 chain saw and a test timber For measuring the chain saw should be fitted with standard guides and chain saws. Length guides should meet the dimensional requirements of Figure A.1. LpARa --- high speed operating conditions ear noise in decibels (dB). Equivalent A-weighted sound power level (LWAFl Ra) according to equation (A.2) Calculated. LWAFl Ra = 10lg (100.1LWAFl 100.1LWARa) (A.2) Where. LWAFl --- full load conditions A-weighted sound power level, in decibels (dB); LWARa --- high speed operating conditions the A-weighted sound power level, in decibels (dB). A.4.2 engine displacement of not less than 80cm3 chain saw Equivalent ear noise (LpAeq) according to equation (A.3) Calculated. LpAeq = 10lg (100.1LpAId 100.1LpAFl) (A.3) Where. LpAId --- idle condition ear noise in decibels (dB); LpAFl --- full load conditions ear noise in decibels (dB). A-weighted sound power level is calculated using the full load operating conditions LWAFl calculated.

Appendix B

(Normative) Measurement conditions cutters and mowers B.1 machines For measuring machines should be separately assembled to produce a variety of different standards of noise cutting attachment. If the cutting attachment is a flexible cord, the flexible cord length is adjusted to shorter than the maximum allowable length of 5mm. For standard attachments See instruction manual or the manufacturer's instructions. Mounting and orientation of machine B.2 B.2.1 machine fixed on the test stand A bracket with the machine and it is in a predetermined orientation. Stent should not generate sound reflection, a certain buffer capacity should be used to support Frame, in order to avoid the phenomenon of resonance and reverberation. For brush cutters, cutting attachment from the ground to the center of the height H 300mm ± 25mm, for lawn mowers, cutting attachment in Heart height from the ground is 50mm ± 25mm (see Figure B.1 ~ Figure B.3). a) a suspension point of the machine The machine is fixed to the test rack, hanging pitch ground height 775mm ± 10mm. If the machine hanging position can be adjusted, you should select the appropriate adjustment, and ensure that the size of H in Figure B.1 to meet the requirements. b) there is no point hanging machine The machine is fixed to the test rack, flip the gripping area of \u200b\u200bthe middle of the height from the ground 775mm ± 10mm. Figure B.2. c) a backpack power unit of the machine Referring b) the shaft is fixed to the test rack, backpack power unit with the strap is fixed on the test stand, the machine carrying bracket The lower edge of height from the ground 1030mm ± 25mm. After the handle to the right of the vertical center line of the backpack power unit, rather than apart 300mm ± 25mm, and in front of the vertical centerline of the strap through the bracket fixed at 200mm ± 25mm. Coordinate B.2.2 A-weighted sound power level of the machine Orientation coordinates of the machine to the x-axis drive shaft located above the surface of the hemisphere, and the center or the right hand y-axis in the rear surface of the hemisphere. Location B.2.3 ear noise measurement microphone Position the microphone should meet the following requirements. For hanging point of the machine, the microphone is located above the suspension point 875mm ± 10mm at Figure B.1. For there is no point hanging machine, the microphone is located directly above the center of the right or the rear handle 875mm ± 10mm at Figure B.2. For machines with a backpack power unit, the microphone should be located directly above the fixed strap bracket and vertical from the right or the center rear handle A distance of 875mm ± 10mm, see Figure B.3. Millimeters Explanation. 1 --- microphone (operator position); 2 --- test holder; 3 --- cutter centerline. Figure B.1 side mounted power plant have hanging point of brush cutters and lawn mowers testing device Millimeters Explanation. 1 --- microphone (operator position); 2 --- test holder; 3 --- cutter centerline. Figure B.2 side mounted power unit no point hanging brush cutters and lawn mowers testing device Millimeters Explanation. 1 --- microphone (operator position); 2 --- strap holder; 3 --- machines bear the lower edge of the scaffold; 4 --- test holder; 5 --- cutter centerline; 6 --- rear handle. Figure B.3 knapsack brush cutters and lawn mowers testing device B.3 Test Procedure B.3.1 Requirements Idling, idling speed. at two different operating conditions of each test measurement noise machine. B.3.2 idling According to the manufacturer's instruction manual to adjust the idle state. Fully released throttle trigger measurement, cutting attachment does not follow. B.3.3 speed operation For brush cutters, when testing the maximum power point of the engine according to ISO 8893 133% of the required speed operation. For the mower, when tested, the flexible cord to adjust according to the provisions B.1 maximum usable length, full throttle trigger. If the maximum speed exceeds Maximum power point speed 133% times the speed should be controlled under stabilized at maximum power point speed 133% condition. If the engine speed is limited to reach that speed, it should be tested at the highest attainable speed condition. If the engine Unable stable operation at the highest speed prescribed by the accelerator should control the speed of the engine is maintained at the highest possible speed and stable operation twenty one Turn, but not low 480r/min or more than the maximum speed. B.4 whole situation sound level computing work Equivalent ear noise (LpAeq) according to formula (B.1) Calculated. LpAeq = 10lg (100.1LpAId 100.1LpARa) (B.1) Where. LpAId --- idle condition ear noise in decibels (dB); LpARa --- high speed operating conditions ear noise in decibels (dB). A-weighted sound power level is calculated using the high speed operating conditions LWARa calculated.

Appendix C

(Normative) Measurement conditions pole power saws C.1 machine For measuring machines should be adjusted to the shortest pole position, and were able to produce different noise standard installation of the cutting attachment. For standard attachments See instruction manual or the manufacturer's instructions. Mounting and orientation of machine C.2 C.2.1 machine fixed on the test stand Machine with a bracket and be in position Figure C.1 and C.2 regulations. Stent should not generate sound reflection, and should have a Given buffering capacity, in order to avoid the phenomenon of resonance and reverberation. a) side-mount power saws The machine is fixed to the test rack, hanging pitch ground height 775mm ± 10mm, and as shown in Figure C.1 inclination angle Is 60 ° ± 10 °. b) Knapsack Power saws According to a) the method of fixing the shaft on the test stand, backpack power unit is fixed to the test rack with strap, the back of the machine Negative edge of the lower bracket height from the ground is 1030mm ± 25mm, rear handle backpack power unit on the right side in the vertical center line therewith From 300mm ± 25mm, and the vertical centerline of the front strap fixed bracket 200mm ± 25mm at Figure C.2. Coordinates C.2.2 A-weighted sound power level of the machine Orientation coordinates of the machine to the x-axis drive shaft located above the surface of the hemisphere, and the center or the right hand y-axis in the rear surface of the hemisphere. Location C.2.3 ear noise measurement microphone Position the microphone shall meet the following requirements. --- For side mounted power saws, the microphone is located above the suspension point 875mm ± 10mm at Figure C.1; --- For Knapsack Power saws, the microphone is located directly above the fixed bracket strap, backpack power unit on the right side from the center line 300mm ± 10mm, height from the ground 1650mm ± 10mm, see Figure C.2. Millimeters Explanation. 1 --- microphone (operator position); 2 --- test holder; 3 --- hanging points. Figure C.1 side mounted power saws testing device Millimeters Explanation. 1 --- microphone (operator position); 2 --- strap holder; 3 --- machines bear the lower edge of the scaffold; 4 --- test rack. Figure C.2 Knapsack Power saws testing device C.3 Test Procedure C.3.1 Requirements Test in two different conditions each measurement noise machine. idling, idling speed. C.3.2 idling According to the manufacturer's instruction manual to adjust the idle state. Fully released throttle trigger measurement, cutting attachment does not follow. C.3.3 high speed When testing, the maximum power point of the engine according to ISO 8893 133% of the required speed operation...

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