EN   EN 
 
 
 EUROPEAN  
COMMISSION   
Brussels, XXX   
[…](2023) XXX  draft  
ANNEX  
 
ANNEX  
to the  
COMMISION DELEGATED REGULATION (EU).../...  
of XXX  
amending Directive 2000/14/EC of the European Parliament and of the Council as 
regards the methods to measure airborne noise emitted by equipment for use outdoors    
EN 1  EN ANNEX  
‘ANNEX III  
METHODS TO MEASURE AIRBORNE NOISE EMITTED BY EQUIPMENT FOR USE 
OUTDOORS  
Introduction  
This Annex contains the methods to measure airborne noise that are to be used to determine the sound 
power levels of equipment for use outdoors.  
Part A of this Annex lays down the basic noise emission standard and general supplements to the basic 
noise emission standard to measure the so und pressure level on a measurement surface enveloping the 
noise source and to calculate the sound power level produced by that source.  
Part B of this Annex lays down the equipment specific noise test code which is presented either as a 
reference to a spec ific standard or as a description of the applicable testing and operating conditions, 
including : 
(a) the test environment ; 
(b) the value of the environmental correction (K 2A); 
(c) the shape and dimensions of the measurement surface ; 
(d) the number and position of microphones to be used ; 
(e) requirements relating to mounting and installation of the equipment ; 
(f) a method to calculate the resulting sound power levels in the event that several tests with different 
operating conditions are t o be used . 
When testing specific types of equipment, manufacturers shall use the basic noise emission standard and 
the general supplements of Part A of this Annex, and the equipment specific noise test code laid down in 
Part B. In case of conflict between Part A and Part B, Part B provisions shall take precedence. 
Manufacturers shall not use alternative solutions to the basic noise emissions standard of Part A even 
though a standard for a specific type of equipment in Part B provides for th at possibility.  
Where the noise test codes laid down in Part B, or in the standards referred to in Part B, would not be 
applicable for some models of equipment within the equipment category,  manufacturers shall determine  the 
guaranteed sound power level in accordance with  the basic noise emission standard and the applicable 
supplements indicated in Part A.  
For equipment listed in Article 12, where the use of the noise measurement methods laid down in this 
Annex or those laid down in the version of Annex III that was applic able before [please insert a date that 
precedes the date of application]  would lead to two different situations of conformity of the product, i.e. 
the guaranteed sound power level of the equipment calculated using one methods exceeds the respective 
permiss ible sound power level in Article 12 but not when using the other method, manufacturers shall 
determine the measured sound power level and the guaranteed sound power level in accordance with the 
methods laid down in the version of Annex III that was applic able before [please insert a date that 
precedes the date of application]  until the permissible sound power levels in Article 12 are amended. In 
that situation, notified bodies shall also use the methods laid down in the version of Annex III that was 
applic able before [please insert a date that precedes the date of application]  to perform the noise tests 
when required in the applicable conformity assessment procedure . 
   
EN 2  EN PART A  
BASIC NOISE EMISSION STANDARD  
Manufacturers shall use the basic noise emission sta ndard EN ISO 3744:2010 to determine the sound 
power level L WA, subject to the general supplements laid down in this Part A. Manufacturers shall apply a ll 
clauses  in EN ISO 3744:2010 sunless otherwise stated in this Part A, or in the applicable noise test c ode 
laid down in Part B of this Annex.  
1. OPERATION OF THE NOIS E SOURCE DURING THE TEST  
1.1. Fan speed  
Any fans fitted to the engine of the equipment or its hydraulic system shall operate during the test. Manufacturers  
shall set the fan speed in accordance with the requirements laid down in points (a) to (d), as applicable, and state that 
fan speed in the test report and use it in further measurements. Fans shall not operate in reverse mode during tests.  
(a) Fan drive directly connected to the engine or its hydra ulic system:  
A fan drive that is directly connected to the engine or its hydraulic equipment shall operate during the test.  
(b) Fan drive with several distinct speeds:  
A fan that can work at several distinct speeds shall be tested in either of the following ways:  
(a)  at its maximum working speed;  
(ii) in a first test with the fan set at zero speed, and in a second test with the fan set at maximum 
speed.  
For the purposes of point (ii), the resulting A -weighted surface sound pressure level L pA shall be 
calcul ated by combining both test results using the following equation:  
LpA = 10 lg (0,3 x 10 0,1 LpA,0%+0,7 x 100,1 LpA,100% ) 
where:  
– LpA,0 % is the A -weighted surface sound pressure level determined with the fan set at zero speed;  
– LpA,100 % is the A -weighted surface sound pressure level determined with the fan set at 
maximum speed;  
(c) Fan drive with continuous variable speed:  
A fan that can work at continuous variable speed shall be tested in accordance with point 2.1(b) or with the fan 
speed set at no less than 70 % of the maximum speed.  
Visco -static fans, which are automatically regulated by the engine temperature, shall be considered to work at 
continuous variable speed irrespective of the origin of the control;  
(d) Equipment with more th an one fan:  
Where a machine is equipped with more than one fan, all fans shall run under the conditions specified 
in (a), (b) or (c), as applicable.  
1.2. Test of powered equipment free of load  
Before measuring the noise emitted by powered equipment free of load , manufacturers shall warm up the engine and 
hydraulic system of the equipment in accordance with the instructions of use and shall observe the safety 
requirements.   
EN 3  EN Manufacturers shall measure the noise with the equipment in stationary position, without op erating the working 
equipment or travelling mechanism. For the purpose of the measurement, the engine shall idle1 at no less than the 
rated speed corresponding to the net power2. 
Where the machine is powered by a generator or from the mains, the frequency of the supply current, specified for 
the motor by the manufacturer, shall be stable at ± 1 Hz if the machine is equipped with an induction motor, and the 
supply voltage at ± 1 % o f the rated voltage if the machine is equipped with a commutator motor. The supply voltage 
shall be measured at the plug of a non -detachable cable or cord, or at the inlet of the machine if a detachable cable is 
provided. The waveform of the current suppli ed from the generator shall be similar to that obtained from the mains.  
Where multiple voltage ranges are labelled at the machine, manufacturers shall  take the measurements at the highest 
labelled voltage range. If the voltage range is 220 -240 V, the test shall be carried out at 230 V.  
If the machine is powered by a battery, the battery shall be charged to at least 70% of its capacity.  
The rated speed used, and the corresponding net power, shall be stated by the manufacturers in the test report.  
Where the e quipment has several engines, those engines shall work simultaneously during the measurements, unless 
that is not possible, in which case the noise emissions of each possible combination of engines shall be measured.  
1.3. Test of powered equipment under load  
Before measuring the noise emitted by powered equipment under load, manufacturers shall warm up the engine 
(driving device) and hydraulic system of the equipment up in accordance with the instructions  of use , and shall 
observe safety requirements. The manufa cturers shall not operate a  signalling device, such as a warning horn or 
reversing alarm, during the measurement.  
Manufacturers shall record the speed or velocity of the equipment during the measurement and state that speed or 
velocity in the test report.  
Where the equipment is fitted with several engines or aggregates, those engines or aggregates shall work 
simultaneously during the measurements, unless that is not possible, in which case manufactures shall measure  noise 
of each possible combination of en gines or aggregates.  
Manufacturers shall lay down specific operating conditions for each type of equipment under load. The specific 
operating conditions shall, as much as possible , produce effects and stresses similar to those encountered under actual 
work ing conditions.  
1.4. Test of hand -operated equipment  
Manufacturers shall lay down conventional operating conditions for each type of hand -operated equipment that 
produce effects and stresses similar to those undergone under actual working conditions.  
2. DETERMINAT ION OF THE SURFACE S OUND PRESSURE LEVEL  
Manufacturers shall determine the surface sound pressure level at least three times. If at least two of the determined 
values do not differ by more than 1 dB, further measurements will not be necessary. Where that is  not the case, 
manufacturers shall continue the measurements until they obtain two values that differ by no more than 1 dB. The A -
weighted surface sound pressure level that manufacturers are to use for calculating the sound power level shall be the 
arithme tic mean of the two highest values that do not differ by more than 1 dB.  
3. INFORMATION TO BE REP ORTED  
                                                 
1 Idle of an engine may be  run either at the lowest engine speed (full release of a throttle) or at the lowest engine speed 
required to perform basic functions, including giving sufficient hydraulic pressure to move the machine or any of its 
tools, as applicable for the specific equipment category.  
2 Net power means the engine power in ‘kW’ obtained on a test bench at the end of the crankshaft, or its equivalent, 
measured in accordance with the method of measu ring the power of internal combustion engines specified in Regulation 
No 120 of the Economic Commission for Europe of the United Nations (UNECE) — Uniform provisions concerning 
the approval of internal combustion engines to be installed in agricultural and  forestry tractors and in non -road mobile 
machinery, with regard to the measurement of the net power, net torque and specific fuel consumption (OJ L 166, 
30.6.2015, p. 170). The engine power in reciprocating internal combustion engines shall be measured in  accordance 
with ISO 14396:2002. In the case of earth -moving machinery, the engine net power shall be measured in accordance 
with ISO 9249:2007.   
EN 4  EN The test report, which is required within the technical documentation provided for in point 3  of Annex V , point 3  of 
Annex VI , point 2  of Annex VII  and p oints 3.1 and 3.3 of Annex VIII , shall contain the technical data necessary to 
identify the noise source under test, the noise test code and the acoustical data used for and obtained during the test.  
The value of the A -weighted sound power level of the n oise source under test that is to be reported shall be rounded 
to the nearest whole number (less than 0,5 use the lower whole number; if it is greater than or equal to 0,5 use the 
higher whole number).  
Where, for the reasons and under the conditions stipul ated in the last paragraph of the introduction of this Annex, the 
manufacturer uses the methods laid down in the version of Annex III that was applicable before [please insert a date 
that precedes the date of application] , the manufacturer shall keep recor d in the test report not only of the data 
relative to the measurements performed according to those methods, but also of the data relative to the measurements 
performed in accordance with the methods laid down in this Annex that confirms the need of using the former 
measurement methods.  
4. MICROPHONE POSITIONS ON THE HEMISPHERICAL  MEASUREMENT SURFACE  (CLAUSE 8.1.1.,  EN 
ISO  3744:2010)  
To determine the A -weighted sound power level directly from the measurement of A -weighted sound pressure levels 
on a hemisphere,  manufacturers shall use the microphone array described in EN ISO 3744:2010, Annex F.  
If there are other specifications for the mic rophone positions laid down in a noise test code for a specific equipment 
referred to in Part B of this Annex, manufacturers  shall use such specifications.  
Where possible, manufacturers shall take the noise measurements at all the microphone positions simultaneously. 
This is especially important for dynamic tests. Where that is not possible, manufacturers shall take special car e to 
ensure stable conditions in the test environment and to minimise the risks of including undesired variations in the 
noise emitted by the machine or by any other factors, including background noise and wind speed.  
5. ENVIRONMENTAL CORRECT ION K2A 
Manufacturers shall determine the e nvironmental correction K2A in accordance with EN ISO 3744:2010, Section 
4.3.  
If K2A  0,5 dB, it can be neglected.  
If K2A > 4 dB, the test environment does not comply with the requirements of this Directive and shall be  modified.  
Manufacturers shall use the specifications for the environmental correction laid down in the noise test code for 
specific equipment referred to in Part B of this Annex where such specifications exist, when applicable in 
combination with EN ISO 3744:2010 . 
   
EN 5  EN PART B  
NOISE TEST CODES FOR SPECIFIC EQUIPMENT  
0. EQUIPMENT THAT IS TES TED FREE OF LOAD  
Test area  
Reflecting surface of concrete or non -porous asphalt  
Environmental correction K 2A 
K2A = 0 
Measurement surface/number of microphone positions/measur ing distance:  
(a) if the largest dimension of the reference parallelepiped does not exceed 8 m:  
hemisphere/six microphone positions in accordance with Part A of this Annex, item 4  
(b) if the largest dimension of the reference parallelepiped exceeds 8 m: parallelep iped in accordance with 
ISO 3744:2010 with measurement distance  
d = 1 m  
Test free of load  
The noise tests shall be carried out in accordance with Part A of this Annex, item 1.2  
Period(s) of observation/determination of resulting sound power level if more t han one operating condition is 
used 
The period of observation shall be at least 15 s or at least 3 operation cycles of the machine.  
1. AERIAL ACCESS PLATFOR MS WITH COMBUSTION E NGINE  
EN 280 -1:2022, clause 4.12.2  
2. BRUSH CUTTERS  
EN ISO 22868:2021   
3. BUILDERS ’ HOISTS FOR THE TRANS PORT OF GOODS  
See No 0.  
The geometrical centre of the engine shall be positioned above the centre of the hemisphere. The lift shall 
move without load and leave the hemisphere — if necessary — in direction of point 1.  
4. BUILDING SITE BAND SAW MACHINES  
EN ISO 19085 -16:2021, clause 6.2.2. However, the A -weighted sound power level shall be determined using 
EN ISO 3744:2010 and not EN ISO 3746:2010.  
5. BUILDING SITE CIRCULA R SAW BENCHES  
Measurement surface/number of microphone positions/measuring distance  
ISO 7960:1995, Annex A, measurement distance d = 1 m.  
Test under load  
ISO 7960:1995, Annex A (point A2(b) only).  
Period of observation  
ISO 7960:1995, Annex A.  
   
EN 6  EN 6. CHAIN SAWS , PORTABLE  
(a) combustion -engine driven equipment:  
EN ISO 22868:2021;  
(b) electric -motor operated equipment:  
EN 62841 -4-1:2020, Annex I.  
7. COMBINED HIGH PRESSUR E FLUSHERS AND SUCTI ON VEHICLES  
Where both devices can be operated simultaneously, they shall be operated in accordance with Nos 26 and 
52 of this Part B. If  not, the nois e emissions of both devices shall be measured separately and the higher 
values shall be retained.  
8. COMPACTION MACHINES  
(a) vibratory plates and vibratory rammers  
EN 500 -4: 2011, clause 5.10.1  
(b) rollers  
EN 474 -13:2022, clause 4.6  
9. COMPRESSORS  
EN ISO 2151:2 008.  
The period of observation shall be at least 15 s.  
10. CONCRETE -BREAKERS AND PICKS , HAND HELD  
(a) Combustion -engine driven equipment:  
Measurement surface/number of microphone positions/measuring distance  
Hemisphere/six microphone positions in accordance with Part A of this Annex, item 4 and the following 
table, depending on the mass of equipment as given in the following table:  
 
 
Mass  of equipment  m in kg  
Radius  of hemisphere  z for microphone  
positions  2, 4, 6 and 8 
m < 10 
m ≥ 10 2 m 
4 m 0,75 m  
1,50 m  
Mounting of equipment  
All appliances shall be tested in the vertical position.  
If the test appliance has got an air exhaust, its axis shall be equidistant from two microphone positions. 
The noise of the power supply shall not influence the measurement of the noise emission from the tested 
appliance.  
Support of the appliance  
The appliance shall be coupled during the test run to a tool embedded in a cube -shaped concrete block 
placed in a concrete pit, sunk into the ground.  
An intermediate steel piece shall be inserted during tests between the appliance and the support tool. 
This intermediate piece shall form a stable structure between the appliance and the support tool. 
Figure  10.1 incorporates those require ments.  
   
EN 7  EN Block characteristics  
The block shall take the shape of a cube of 0,60 m ± 2 mm long at the edge and as regular as possible. It 
shall be made of reinforced concrete and thoroughly vibrated in layers of up to 0,20 m to avoid 
excessive sedimentation . 
Quality of the concrete  
The quality of the concrete shall correspond to C 50/60 of ENV 206.  
The cube shall be reinforced by 8 mm -diameter steel rods without ties, each rod being independent of 
the other. The design concept is illustrated in figure 10.2.  
Supporting tool  
The tool shall be sealed into the block and shall consist of a rammer between 178 mm and 220 mm 
diameter and a tool chuck component identical to that normally used with the appliance being tested and 
complying with ISO 1180:1983, but suffic iently long to enable the practical test to be carried out.  
Suitable treatment shall be carried out to integrate the two components. The tool shall be fixed in the 
block so that the bottom of the rammer is 0,30 m from the upper face of the block (see figur e 10.2).  
The block shall remain mechanically sound, particularly at the point where the supporting tool and the 
concrete meet. Before and after each test, it shall be verified that the tool sealed in the concrete block is 
integrated into it.  
Positioning of  the cube  
The cube shall be set in a pit cemented throughout, covered by a screening slab of at least 100 kg/m2, as 
indicated in figure 10.3, so that the upper surface of the screening slab is flush with the ground. To avoid 
any parasitic noise, the block shall be insulated against the bottom and sides of the pit by elastic blocks, 
the cut -off frequency of which shall not be more than half the striking rate of the appliance tested, 
expressed as strokes per second.  
The opening in the screening slab through w hich the tool chuck component passes shall be as small as 
possible and sealed by a flexible sound -proof joint.  
Test under load  
The appliance tested shall be connected to the supporting tool.  
The test appliance shall be operated in stable conditions having the same acoustical stability as in 
normal service.  
The test appliance shall be operated at the maximum power specified in the instructions supplied to the 
purchaser.  
Period of observation  
The period of observation shall be at least 15 s.  
   
EN 8  EN Figure 10.1  
Schematic diagram of the intermediate piece  
 
  
 
EN 9  EN Figure 10.2  
Test block  
 
 
EN 10  EN Figure 10.3  
Testing device  
 
The value of A shall be such that the screening slab resting on the elastic joint J is flush with the ground . 
(b) Electric -motor operated equipment:  
EN IEC 62841 -2-6:2020, Annex I, clause I.2  
EN IEC 62841 -2-6:2020/A11:2020  
Pneumatic or hydraulic driven equipment:  
Same as combustion -engine driven equipment.  
11. CONCRETE OR MORTAR MI XERS  
Test under load  
The mixing device (drum) shall be filled to its rated capacit y with sand of granulation 0 to 3 mm, the humidity 
shall be 4 to 10 %.  
The mixing device shall be operated at least at the rated speed.  
Period of observation  
The period of observation shall be at least 15 s.  
12. CONSTRUCTION WINCHES  
(a) Combustion -engine drive n equipment:  
See No 0.  
The geometrical centre of the engine shall be positioned above the centre of the hemisphere; the winch 
shall be connected but no load shall be applied.  
(b) Electric -motor operated equipment:  
EN 14492 -2:2019, Annex M.  
  
 
EN 11  EN 13. CONVEYING AND  SPRAYING MACHINED F OR CONCRETE AND MORT AR 
EN 12001:2012, Annex C.  
14. CONVEYOR BELTS  
See No 0.  
The geometrical centre of the engine shall be positioned above the centre of the hemisphere. The belt shall 
move without load and leave the hemisphere, if necessary, in the direction of point 1.  
15. COOLING EQUIPMENT ON VEHICLES  
Test under load  
The cooling equipment shall be installed in a real or simulated cargo space and the sound level shall be 
measured in a stationary position where, according to the instruc tions supplied to the purchaser, the height of 
the cooling equipment is representative of the intended installation requirements. The power source of the 
cooling equipment shall operate at the rate that causes the maximum speed of the cooling compressor an d the 
fan specified in the instructions. If the cooling equipment is intended to be powered by the driving engine of 
the vehicle, the [driving?] engine shall not be used during the measurement and the cooling equipment shall be 
connected to a suitable elec trical power source. Removable tractor units shall be removed during the 
measurement.  
The sound level of cooling equipment installed in cargo -space refrigeration units which have a choice of 
different power sources shall be measured separately for each pow er source. The measurement results reported 
shall as a minimum reflect the mode of operation which leads to the maximum noise output.  
Period of observation  
The period of observation shall be at least 15 s . 
16. DOZERS  
ISO 6395:2008, Annex C.  
17. DRILL RIGS  
(a) Mobi le drill rigs:  
EN 16228 -2:2014+A1:2021, clause 5.12.  
(b) Horizontal directional drilling equipment:  
EN 16228 -3:2014+A1:2021, clause 5.15.  
(c) Interchangeable auxiliary equipment for drilling:  
EN 16228 -7:2014+A1:2021, clause 5.3.  
(d) Any other equipment for  drilling:  
EN 16228 -1:2014+A1:2021, clause 5.27.2.2.  
18. DUMPERS  
ISO 6395:2008, Annex F.  
19. EQUIPMENT FOR LOADING  AND UNLOADING TANKS  OR SILOS ON TRUCKS  
See No 9 for compressors or vacuum pumps.  
See No 56 for liquid pumps.  
20. EXCAVATORS  
ISO 6395:2008, Annex B.  
21. EXCAVATORS -LOADERS   
EN 12  EN ISO 6395:2008, Annex E.  
22. GLASS RECYCLING CONTA INERS  
For the purpose s of this noise test code, the single -event time -integrated sound pressure level L E, as defined in 
EN ISO 3744:2010 point 3.4, shall be used in measuring the sound pressur e level at the microphone positions.  
Environmental correction K 2A 
Measurement in the open air  
K2A=0 
Measurements indoors  
The value of the constant K 2A, determined in accordance with EN ISO 3744:2010, Annex A, shall be ≤ 2,0 dB 
in which case K 2A shall be di sregarded.  
Operating conditions during test  
The noise measurement shall be carried out during a complete cycle beginning with the empty container and 
completed when 120 glass bottles have been thrown into the container.  
The glass bottles are defined as fol lows:  
— capacity: 75 cl;  
— mass: 370 ± 30 g.  
The testing operator shall hold each glass bottle by its neck and with its bottom towards the filling aperture and 
then push it gently inside through the filling aperture in the direction of the centre of the co ntainer, avoiding if 
possible that the bottle hits the walls. Only one filling aperture, which is the one nearest to microphone 
position 12, shall be used for throwing the bottles.  
Period(s) of observation/determination of resulting sound power level if mo re than one operating condition is 
used 
The A -weighted single -event time -integrated sound pressure level shall be simultaneously measured at the six 
microphone positions for each glass bottle thrown into the container.  
The A -weighted single -event time -integrated sound power level averaged over the measurement surface shall 
be calculated in accordance with EN ISO 3744:2010, point 8.2.2.  
The A -weighted single -event time -integrated sound pressure level averaged over all 120 throwings of glass 
bottles shall be calculated as the logarithmic mean of the A - weighted single -event time -integrated sound 
pressure levels, averaged over the measurement surface.  
23. GRADERS  
ISO 6395:2008, Annex G.  
24. GRASS TRIMMERS /GRASS EDGE TRIMMERS  
See No 2.  
25. HEDGE TRIMMERS  
(a) Combustion -engine driven equipment:  
EN ISO 22868:2021;  
(b) Electric -motor operated equipment:  
EN IEC 62841 -4-2:2019, Annex I, clause I.2.  
26. HIGH-PRESSURE FLUSHERS  
Test under load   
EN 13  EN The high -pressure flusher shall be tested in a stationary position. The engine  and auxiliary units shall operate at 
the speed provided by the manufacturer for the operation of the working equipment. The high -pressure pumps 
shall be operated at the maximum speed and operating pressure provided by the manufacturer. Using an 
adapted no zzle, the pressure reduction valve shall be just on the point of reacting. The flow noise of the nozzle 
shall not have any influence on the results of the measurements.  
Period of observation  
The period of observation shall be at least 30 s.  
27. HIGH-PRESSURE W ATER JET MACHINES  
(a) Equipment with pressure rating ≤ 35 MPa:  
EN 60335 -2-79:2012, Annex CC.  
(b) Equipment with pressure rating > 35 MPa:  
EN 1829 -1:2010, clause 6.8.  
28. HYDRAULIC HAMMERS  
 Measurement surface/number of microphone positions/measuring distance  
Hemisphere/six microphone positions in accordance with Part A, item 4/r = 10 m.  
Mounting of the equipment  
For the test the hammer shall be  attached to a carrier and a special test block structure shall be used. Figure 
28.1 gives the characteristics of thi s structure and Figure 28.2 shows the position of the carrier.  
Carrier  
The carrier for the test hammer shall meet the requirements of the test hammer's technical specifications 
especially in weight range, hydraulic output power, supply oil flow and return line back pressure.  
Mounting  
Mechanical mounting as well as connections (hoses, pipes, etc.) shall correspond to specifications given in the 
hammer's technical data. All significant noise caused by pipes and various mechanical components needed for 
installation, shall be eliminated. All component connections shall be well tightened.  
Hammer stability and static hold force  
The hammer shall be firmly held down by the carrier to give the same stability as that existing under normal 
operating conditions. The hammer shall be operated in an upright position.  
Tool  
A blunt tool shall be used in the measurements. The length of the tool shall meet the requirements referred to 
in figure 28.1 (test block).  
Test under load  
Hydraulic input power and oil flow  
Operati ng conditions of the hydraulic hammer shall be appropriately adjusted, measured and reported along 
with the corresponding technical specification values. The hammer under test shall  be used in such way that 90 
% or more of the maximum hydraulic input power  and oil flow of the hammer can be reached  
Care shall be taken that the total uncertainty of the measurement chains of p s and Q is kept within ± 5 %, in 
order to ensure the hydraulic input power determination within ± 10 % accuracy. Assuming linear correla tion 
between hydraulic input power and emitted sound power, that would mean a variation of less than ± 0,4 dB in 
the determination of the sound power level.  
Adjustable components having effect on the hammer power   
EN 14  EN Pre-settings of all accumulators, pressure central valves and other possible adjustable components shall meet 
the values given in technical data. If more than one fixed impact rate is optional, measurements shall be made 
using all settings. Minimum and maximum values shall be presented.  
Quantities to be measured  
ps The mean value of the hydraulic supply fine pressure during the hammer's operation, including at least 
10 blows;  
Q The mean value of the breaker inlet oil flow measured simultaneously with p s; 
T  The oil temperature shall lie between + 40 / + 60 °C during measurements. The temperature of the 
hydraulic breaker body shall be stabilised to normal operating temperature before starting the 
measurements;  
Pa The prefill gas pressures of all accumulators shall be measured in a static situation (bre aker not 
operating) at stable ambient temperature of + 15/ + 25 °C. The measured ambient temperature shall be 
recorded with the measured accumulator prefill gas pressure.  
Parameters to be evaluated from the measured operating parameters  
PIN Hydraulic input power of the breaker, PIN = p s Q 
Hydraulic supply line pressure measurement, p s: 
– ps shall be measured as close to the breaker IN -port as possible;  
– ps shall be measured with a pressure gauge (minimum diameter: 100 mm; accuracy class ± 1, 0 % FSO);  
Breaker inlet oil flow, Q  
– Q shall be measured from the supply pressure line as close to the breaker IN -port as possible;  
– Q shall be measured with an electric flowmeter (accuracy class ± 2,5 % of the flow reading);  
Measuring point of the oil temperature, T  
– T shall be measured from the oil tank of the carrier or from the hydraulic line connected to hammer. The 
measuring point shall be specified in the report;  
– The accuracy of the temperature reading shall lie within ± 2 °C of the actual value;  
Period of observation/determination of resulting sound power level  
The period of observation shall be at least 15 s.  
The measurements shall be repeated three times, or more if necessary. The final result shall be calculated as 
the arithmetic mean of the two  highest values that do not differ by more than 1dB.  
   
EN 15  EN Figure 28.1  
 
Figure 28.2  
 
 
 
Definitions  
d Tool diameter (mm);  
d1 Anvil diameter, 1 200 ± 100 mm;  
d2 Inner diameter of the anvil support structure, ≤ 1 800 mm;  
d3 Diameter of the test block deck, ≤ 2 200 mm;  
d4 Diameter of the tool opening in the deck, ≤ 350 mm;  
 
EN 16  EN d5 Diameter of the tool seal, ≤ 1 000 mm;  
h1 Visible tool length between the lowest part of the housing and tool seal upper surface (mm), h 1 = d ± d/2;  
h2  Tool seal thickness above the deck, ≤  20 mm (if the tool seal is located below the deck, its thickness 
shall not be limited; it may be made of foam rubber);  
h3 Distance between deck upper surface and anvil upper surface, 250 ± 50 mm;  
h4 Isolating foam rubber deck seal thickness, ≤ 30 mm;  
h5 Anvil thickness, 350 ± 50 mm;  
h6 Tool penetration, ≤ 50 mm.  
If the quadratic shape of the test block structure is used, the maximum length dimension shall equal 0,89 × 
corresponding diameter.  
The empty space between the deck and the anvil may be filled with  elastic foam rubber or other absorption 
material, density < 220 kg/m3. 
29. HYDRAULIC POWER PACKS  
Mounting of equipment  
The hydraulic power pack shall be installed on the reflecting plane; skid -mounted hydraulic power packs shall 
be placed on a support 0,40 m high, unless otherwise required by the manufacturer's conditions of installation.  
Test under load  
During testing, no tools shall be coupled to the hydraulic power pack.  
The hydraulic power pack shall be brought to its steady state within the range specifie d by the manufacturer. It 
shall operate at its nominal speed and its nominal pressure. The nominal speed and pressure shall be those 
appearing in the instructions supplied to the purchaser.  
Period of observation  
The period of observation shall be at least 15 s. 
30. JOINT CUTTERS  
(a) Pedestrian -controlled floor -sawing machines:  
EN 13862:2021, clause 4.10.2  
(b) Portable, hand -held internal combustion engine -driven equipment, mounted on a mobile 
support, to be used as floor saws:  
EN ISO 19432 -1:2020, clause 4.19. 2 
(c) Other joint cutters:  
Test under load  
The joint cutter shall be equipped with the largest possible blade specified by the manufacturer in the 
instructions supplied to the purchaser. The engine shall operate at its maximum speed with the blade 
idling.  
Period of observation  
The period of observation shall be at least 15 s.  
31. LANDFILL COMPACTORS  
ISO 6395:2008, Annex H  
32. LAWNMOWERS  
(a) Combustion engine powered rotatory and cylinder lawnmowers:   
EN 17  EN EN ISO 5395 -1:2013, EN ISO 5395 -1:2013/A1:2018, clause 4.3, secon d indent.  
(b) Electric -motor operated pedestrian controlled walk -behind lawnmowers:  
EN IEC 62841 -4-3:2021, EN IEC 62841 -4-3:2021/A11:2021, Annex I, clause I.2  
33. LAWN TRIMMERS /LAWN EDGE TRIMMERS  
EN 50636 -2-91:2014, Annex CC  
34. LEAF BLOWERS  
(a) Combustion -engine driven equipment:  
EN ISO 22868:2021  
(b) Electric -motor operated equipment:  
EN 50636 -2-100:2014, Annex CC.  
35. LEAF COLLECTORS  
See No. 34.  
36. LIFT TRUCKS  
EN 12053:2001+A1:2008  
37. LOADERS  
ISO 6395:2008, Annex D  
38. MOBILE CRANES  
EN 13000:2010+A1:2014, clause 5.3.  
39. MOBILE WASTE CONTAINERS  
Test area  
– Reflecting surface of concrete or non -porous asphalt;  
– Laboratory room which provides a free field over a reflecting plane.  
Environmental correction K 2A 
Measurement in the open air:  
K2A = 0 
Measurement indoors:  
The value of the co nstant K 2A, determined in accordance with EN ISO 3744:2010, Annex A, shall be ≤ 2,0 dB, 
in which case K 2A shall be disregarded.  
Measurement surface/number of microphone positions/measuring distance  
Hemisphere/six microphone positions in accordance with Par t A, item 4/r = 3 m.  
Operating conditions during test  
All the measurements shall be carried out with an empty container.  
Test No 1: Free shutting down of the lid along the container body  
To minimise the operator’s influence on the measurements, the operato r shall stand at the back side of the 
container (hinge side). The lid shall be released by its middle, to prevent warping during its fall.  
The measurement shall carried out during the following cycle, repeated 20 times:  
– initially, the lid shall be raised v ertically;   
EN 18  EN – the lid shall be released forward, if possible without giving an impulse, with the operator at the back of 
the container, unmoving until the lid is shut;  
– after complete shutting, the lid shall be raised to its initial position.  
Note : If necessary,  the operator may temporarily move to raise the lid.  
Test No 2: Complete opening of the lid  
To minimise the operator’s influence on the measurements, the operator shall stand at the back side of the 
container (hinge side) for the four -wheel conta iners, or on the right side of the container (between microphone 
position 10 and microphone position 12) for the two -wheel containers. The lid shall be released by its middle 
or as near as possible to its middle.  
To prevent any moving of the container, whe els shall be locked during the test. For the two -wheel containers, 
and to prevent any bounce of the container, the operator may maintain it by placing a hand on the top rim.  
The measurement shall be carried out during the following cycle:  
– initially, the li d shall be opened horizontally;  
– the lid shall be released without giving an impulse;  
– after complete opening, and before a possible rebound, the lid shall be raised to its initial position.  
Test No 3: Rolling of the container over an artificial irregular tr ack 
For this test, an artificial test track, simulating irregular ground, shall be used. This test track shall consist of 
two parallel strips of steel mesh (6 m long and 400 mm wide), fastened in the reflecting plane approximately 
every 20 cm. The distance  between the two strips shall adapted to the type of container to allow the wheels to 
roll all over the whole length of the track. The mounting conditions shall ensure a flat surface. If necessary, the 
track shall be fastened on the ground with resilient m aterial to avoid emission of parasitic noise.  
Note:  Every strip may be composed of several 400 mm wide elements fitted together.  
An example of adequate track is given in figures 39.1 and 39.2.  The operator  shall be  situated  at the lid hinge  
side. 
The measurement shall be carried out while the operator draws the container along the artificial track, with a 
constant speed of approximately 1 m/s, between points A and B (4,24 m distance — see figure 39.3) when the 
wheel axle, for a 2 -wheel container, or th e first wheel axle for a 4 -wheel container, reaches point A or point B. 
This procedure shall be repeated three times in each direction.  
During the test, for a 2 -wheel container, the angle between the container and the track shall be 45°. For a 4 -
wheel cont ainer, the operator shall ensure an appropriate contact of all the wheels with the track.  
Periods of observation/determination of resulting sound power level if more than one operating condition is 
used 
Test Nos 1 and 2: Free shutting down of the lid along  the container body and complete opening of the lid  
If possible, the measurements shall be carried out simultaneously at the six microphone positions. Otherwise, 
the sound levels measured at each microphone position shall be classified in increasing order and the sound 
power levels shall be calculated by associating the values at each microphone position according to their row.  
The A -weighted single -event time -integrated sound pressure level shall be measured for each of the 20 
shuttings and the 20 openings  of the lid at each measurement point. The sound power levels L WAshutting  and 
LWAopening  shall be calculated from the quadratic mean of the five highest values among those obtained.  
Test No 3: Rolling the container over an artificial irregular track  
The pe riod of observation T shall be equal to the duration necessary to cover the distance between point A and 
point B on the track.  
The sound power level L WArolling  shall be equal to the mean of six values differing by less than 2 dB. If this 
criterion is not f ulfilled with six measurements, the cycle shall be repeated as often as necessary.  
The resulting sound power level shall calculated as follows:   
EN 19  EN LWA = 10 log 1/3 (100,1 LWAshutting + 100,1 LWAopening  + 100,1 LWArolling) 
 
Figure 39.1  
Drawing of the rolling track  
 
 
 
 
EN 20  EN Figure 39.2  
Detail of construction and mounting of the rolling track  
 
 
 
 
 
Figure 39.3  
Measurement distance  
 
 
 
40. MOTOR HOES  
 
EN 21  EN See No 32  
The tool shall be disconnected or removed during  measurement.  
41. PAVER -FINISHERS  
EN 500 -6:2006+A1:2008, clause 5.17  
42. PILING EQUIPMENT  
(a) Foundation equipment:  
EN 16228 -4:2014+A1:2021, clause 5.8  
(b) Interchangeable auxiliary equipment for piling:  
EN 16228 -7:2014+A1:2021, clause 5.3  
(c) Any other equipment for drilling:  
EN 16228 -1:2014+A1:2021, clause 5.27.2.2  
43. PIPELAYERS  
ISO 6393:2008  
44. PISTE CATERPILLARS  
ISO 6393:2008, with the same procedures and operating conditions described for tractor -dozers. 
The test size surface shall be the hard reflecting plane (5.3. 2. in ISO 6393:2008).  
45. POWER GENERATORS  
EN ISO 8528 -10:2022. However, the A -weighted sound power level shall be determined using 
EN ISO 3744:2010 and not EN ISO 3746:2010.  
46. POWER SWEEPERS  
(a) Road sweepers:  
EN 17106 -2:2021, clause 4.3  
(b) Other power sweepe rs for use out -doors:  
EN 60335 -2-72:2012, Annex DD.  
47. REFUSE COLLECTION VEH ICLES  
EN 1501 -4:2023  
48. ROAD MILLING MACHINES  
EN 500 -2:2006+A1:2008, clause 5.17.  
49. SCARIFIERS  
(a) Combustion -engine driven equipment:  
EN 13684:2018, clause 5.16.2.  
(b) Electric -motor operated equipment:  
EN 50636 -2-92:2014 , clause 20.106.3.  
50. SHREDDERS /CHIPPERS  
(a) Garden hand -fed shredders/chippers  
(i) Combustion -engine driven equipment  
EN 13683:2003+A2:2011, clause 5.10.2.   
EN 22  EN EN 13683:2003+A2:2011/AC:2013.  
(ii) Electric -motor operated equ ipment  
EN 50434:2014, clause 20.107.2.  
(b) Forestry horizontally hand -fed wood chippers  
EN 13525:2020, clause 5.5  
(c) Forestry vertically hand -fed wood chippers, forestry mechanically (vertically 
and horizontally) loaded wood chippers and other shredders/c hippers:  
Test under load  
The shredder/chipper shall be tested chipping one or more pieces of wood.  
The work -cycle shall consist of chipping a round piece of wood (dry pine or plywood) of 
at least 1,5 m length, that is sharpened at one end and has a diamete r approximately equal 
to the maximum that the shredder/chipper is designed to accept specified in the 
instructions supplied to the purchaser.  
Period of observation/determination of resulting sound power level  
The period of observation shall end when there is no more material in the chipping area, 
but it shall not exceed 20 s. If both operation conditions are possible, the higher sound 
power level shall be retained.  
51. SNOW -REMOVING MACHINES WI TH ROTATING TOOLS  
(a) Road operation snow clearing machines:  
EN 171 06-3-1:2021, clause 4.2  
(b) Pedestrian -controlled and ride -on snow throwers:  
(i) combustion -engine driven equipment  
EN ISO 8437 -4:2021, Annex A.  
(ii) electric -motor operated equipment:  
The machine shall be operated at maximum speed at no -load for 10 min be fore the 
test starts. The collector or impeller devices shall be lubricated in accordance with 
manufacturer’s instructions.  
During the test, the collector or impeller shall be engaged and unloaded. The test 
shall be carried out stationary at the maximum sp eed at no -load.  
Machines shall be measured by placing them on the surface in such a way that the 
projection of the geometrical centre of their main parts (excluding handle, etc.) 
coincides with the origin of the coordinate system of the microphone position s. If 
an artificial surface is used, it shall be placed so that its geometrical centre also 
coincides with the origin of the coordinate system of the microphone positions. The 
longitudinal axis of the machine shall be on the x -axis. The measurement shall b e 
carried out without an operator.  
During measurements, the machine shall operate under stable conditions. Once the 
noise emission is steady, the measurement time interval shall be at least 15 s. If 
measurements are made in octave or one -third octave frequ ency bands, the 
minimum period of observation shall be 30s for the frequency bands centred on or 
below 160 Hz, and 15 s for the frequency bands centred on or above 200 Hz.  
52. SUCTION VEHICLES  
Test under load   
EN 23  EN The suction vehicle shall be tested in a stationary  position. The engine and auxiliary units shall 
operate at the speed provided by the manufacturer for the operation of the working equipment. 
The vacuum pumps shall operate at the maximum speed provided by the manufacturer. The 
suction equipment shall be o perated in such a way that the internal pressure is equal to 
atmospheric pressure (0 % vacuum). The flow noise of the suction nozzle shall not have any 
influence on the results of the measurements.  
Period of observation  
The period of observation shall be a t least 15 s.  
53. TOWER CRANES  
EN 14439:2006+A2:2009, clause 6.4.1.  
54. TRENCHERS  
ISO 6393:2008  
55. TRUCK MIXERS  
EN 12609:2021, Annex B  
56. WATER PUMP UNITS  
EN ISO 20361:2019, EN ISO 20361:2019/A11:2020. However, the A -weighted sound power 
level shall be determined using  ISO 3744:2010 and not any other alternative method proposed 
in the product specific standard.  
The period of observation shall be at least 15 s.  
57. WELDING GENERATORS  
 EN ISO 8528 -10:2022 However, the A -weighted sound power level shall be determined using 
EN ISO 3744:2010 and not EN ISO 3746:2010.’.