kSIST FprEN IEC 62841-4-9:2025

Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-9: Particular requirements for battery-operated chain saws for tree service

D164/C043: DOW = DOR + 48 months

Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und Rasen- und Gartenmaschinen – Sicherheit – Teil 4-9: Besondere Anforderungen für batteriebetriebene Kettensägen für die Baumpflege

Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 4-9: Exigences particulières pour les scies à chaîne alimentées par batterie pour l’élagage des arbres

Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 4-9. del: Posebne zahteve za akumulatorske verižne žage za nego dreves

General Information

• Status: Not Published
• Public Enquiry End Date: 23-Nov-2023
• ICS: 25.140.20 - Electric tools
• ICS: 65.060.70 - Horticultural equipment
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 01-Sep-2025
• Due Date: 20-Oct-2025
• Completion Date: 02-Sep-2025
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: FprEN IEC 62841-4-9:2025 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-9: Particular requirements for battery-powered chain saws for tree service

Relations

• Amended By: oSIST prEN IEC 62841-4-9:2023/oprAA:2023 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-9: Particular requirements for chain saws for tree service
• Effective Date: 25-Jul-2023

Overview

FprEN IEC 62841-4-9:2025 - “Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-9: Particular requirements for battery-powered chain saws for tree service” is a CLC-adopted part of the IEC 62841 series. It supplements and modifies IEC 62841-1:2014 to provide specific safety, testing and marking requirements for battery-powered chain saws used in tree service. The document emerged as a Committee Draft for Vote in 2023 and carries a proposed stability date of 2028.

Key topics and technical requirements

This part focuses on practical safety and conformity topics tailored to battery chain saws. Major areas covered include:

• Scope, terms and definitions specific to battery-powered chain saws for tree service (aligning with IEC 62841-1).
• General safety requirements and conditions for testing (mechanical strength, endurance, abnormal operation).
• Electrical safety: protection against access to live parts, insulation, creepage and clearance requirements.
• Battery-specific requirements (Annex K and L): battery tools, battery packs, and battery tools with mains connection or non-isolated sources.
• Mechanical hazards and construction: chain-bar safety, guards, handles, and resistance to rusting and moisture.
• Start and control functions: starting, switch trigger forces and overload protection.
• Noise and vibration measurement (Annex I): microphone/transducer positions and test conditions for emission reporting.
• Product safety labels and marking (Annex AA): mandatory labels (eye/ear protection, operator training notices).
• Working at height guidance (Annex BB, informative): attachment and harness examples for tree service operations.
• Test procedures and figures/tables: detailed illustrations (chain saw nomenclature, test probes, impact tests) and required performance levels.

Practical applications and who uses it

This standard is essential for:

• Manufacturers and product designers of battery-powered chain saws to ensure safe design, compliance and market access.
• Test laboratories and certification bodies performing type testing, noise/vibration measurement and battery safety evaluations.
• Regulatory authorities and conformity assessors referencing harmonized requirements for tree-service equipment.
• Safety engineers and procurement teams in arboriculture and tree service companies selecting compliant tools and verifying product labels and instructions.

Related standards

• IEC 62841-1:2014 - General requirements for electric motor-operated hand-held tools, transportable tools and lawn and garden machinery.
• Other parts of the IEC 62841 series for different tool types and safety aspects.

Keywords: IEC 62841-4-9, battery-powered chain saws, tree service, safety standard, battery tools, noise and vibration, product safety labels, CLC.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 62841-4-9:2023
01-november-2023
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 4-
9. del: Posebne zahteve za akumulatorske verižne žage za nego dreves
Electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery - Safety - Part 4-9: Particular requirements for battery-operated chain saws
for tree service
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses -
Sécurité - Partie 4-9: Exigences particulières pour les scies à chaîne alimentées par
batterie pour l’élagage des arbres
Ta slovenski standard je istoveten z: prEN IEC 62841-4-9:2023
ICS:
25.140.20 Električna orodja Electric tools
65.060.70 Vrtnarska oprema Horticultural equipment
oSIST prEN IEC 62841-4-9:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 62841-4-9:2023
oSIST prEN IEC 62841-4-9:2023
116/673/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62841-4-9 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-09-01 2023-11-24
SUPERSEDES DOCUMENTS:
116/644/NP, 116/657/RVN
IEC TC 116 : SAFETY OF MOTOR-OPERATED ELECTRIC TOOLS
SECRETARIAT: SECRETARY:
United States of America Mr Joseph Harding
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In So me
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery -
Safety - Part 4-9: Particular requirements for battery-powered chain saws for tree service

PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

oSIST prEN IEC 62841-4-9:2023
IEC CDV 62841-4-9 © IEC 2023 – 2 – 116/673/CDV
1 CONTENTS
2 FOREWORD . 4
3 INTRODUCTION . 6
4 1 Scope . 7
5 2 Normative references . 8
6 3 Terms and definitions . 9
7 4 General requirements . 11
8 5 General conditions for the tests . 11
9 6 Radiation, toxicity and similar hazards . 11
10 7 Classification . 11
11 8 Marking and instructions . 11
12 9 Protection against access to live parts . 11
13 10 Starting . 12
14 11 Input and current . 12
15 12 Heating . 12
16 13 Resistance to heat and fire . 12
17 14 Moisture resistance . 12
18 15 Resistance to rusting . 12
19 16 Overload protection of transformers and associated circuits . 12
20 17 Endurance . 12
21 18 Abnormal operation . 12
22 19 Mechanical hazards . 12
23 20 Mechanical strength . 12
24 21 Construction . 12
25 22 Internal wiring . 12
26 23 Components . 12
27 24 Supply connection and external flexible cords . 12
28 25 Terminals for external conductors . 12
29 26 Provision for earthing . 13
30 27 Screws and connections . 13
31 28 Creepage distances, clearances and distances through insulation . 13
32 Annexes . 14
33 Annex I (informative) Measurement of noise and vibration emissions . 14
34 Annex K (normative) Battery tools and battery packs . 21
35 Annex L (normative) Battery tools and battery packs provided with mains connection
36 or non-isolated sources . 50
37 Annex AA (normative) Product safety labels . 51
38 Annex BB (informative) Working with chain saws at height . 54
39 Annex CC (informative) Example of a material and construction fulfilling the
40 requirements for an artificial surface . 59
41 Bibliography . 61
43 Figure 101 – Chain saw nomenclature . 11
44 Figure I.101 - Microphone positions on the hemisphere . 14

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45 Figure I.102 - Positions of transducers for chain saws . 20
46 Figure K.301 – Holding the chain saw . 24
47 Figure K.302 – Minimum dimensions of the rear hand guard . 30
48 Figure K.303 – Straight test probe . 31
49 Figure K.304 – Application of the straight test probe in K.19.304 . 32
50 Figure K.305 – Measuring direction of static activation force F . 33
51 Figure K.306 – Impact direction and pendulum . 34
52 Figure K.307 – Saw chain drive link spacing . 35
53 Figure K.308 – Impact test apparatus for handle insulation . 39
54 Figure K.309 – Cutting length . 43
55 Figure AA.1 – Product safety labels illustrating – "Wear eye protection" . 51
56 Figure AA.2 – Product safety label illustrating – "Wear ear protection" . 51
57 Figure AA.3 – Product safety label illustrating – "Do not expose to rain" . 52
58 Figure AA.4 – Example of a product safety label illustrating – “Wear protective clothing
59 for feet, legs, hands, arms and head . 52
60 Figure AA.5 – Example of a product safety label illustrating – “This chain saw is for use
61 by trained tree service operators only. See instruction handbook!” . 52
62 Figure AA.6 – Product safety label illustrating – "Wear eye and ear protection" . 53
63 Figure AA.7 – Product safety labels illustrating – "Wear eye, ear and head protection" . 53
64 Figure AA.8 – Product safety label illustrating – "Wear eye and head protection" . 53
65 Figure BB.1 — Example of attachment of chain saw to operator’s harness . 55
66 Figure BB.2 — Example of attachment of chain saw to centre rear mid-point on
67 harness . 56
68 Figure BB.3 — Example of redirection of main line via supplementary anchor point . 57
69 Figure BB.4 — Example of temporary foot stirrup created from endless sling . 57
70 Figure CC.1– Sketch of the measurement surface covered with an artificial surface . 60
72 Table I.101 – Co-ordinates of microphone positions . 16
73 Table I.102 – Absorption coefficients . 16
74 Table I.103 – Test conditions . 18
75 Table 4 – Required performance levels . 29
76 Table 7 – Switch trigger force . 40
77 Table K.301 – Pull and torque value . 46
78 Table K.1 – Minimum creepage distances and clearances between parts of different
79 potential. 47
80 Table K.2 – Minimum total sum of creepage distances and clearances to accessible
81 surfaces . 48
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84 INTERNATIONAL ELECTROTECHNICAL COMMISSION
85 ____________
87 ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
88 TOOLS AND LAWN AND GARDEN MACHINERY –
89 SAFETY –
91 Part 4-9: Particular requirements for battery-powered chain saws for tree
92 service
94 FOREWORD
95 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
96 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
97 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
98 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
99 Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
100 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
101 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
102 with the IEC also participate in this preparation. IEC collaborates closely with the Inte rnational Organization for
103 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
104 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
105 consensus of opinion on the relevant subjects since each technical committee has representation from all
106 interested IEC National Committees.
107 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
108 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
109 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
110 misinterpretation by any end user.
111 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
112 transparently to the maximum extent possible in their national and regional publications. Any divergence between
113 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
114 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
115 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
116 services carried out by independent certification bodies.
117 6) All users should ensure that they have the latest edition of this publication.
118 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
119 members of its technical committees and IEC National Committees for any personal injury, property damage or
120 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
121 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
122 Publications.
123 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
124 indispensable for the correct application of this publication.
125 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
126 rights. IEC shall not be held responsible for identifying any or all such patent rights.
127 IEC 62841-4-9 has been prepared by IEC technical committee 116: Safety of motor -operated
128 electric tools. It is an International Standard.
129 The text of this International Standard is based on the following documents:
Draft Report on voting
116/XX/FDIS 116/XX/RVD
131 Full information on the voting for its approval can be found in the report on voting indicated in
132 the above table.
133 The language used for the development of this International Standard is English.
134 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
135 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
136 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
137 described in greater detail at www.iec.ch/publications.

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138 This document is to be used in conjunction with IEC 62841‑1:2014.
139 This document supplements or modifies the corresponding clauses in IEC 62841-1:2014, so as
140 to convert it into the IEC Standard: Particular requirements for battery-powered chain saws for
141 tree service.
142 Where a particular subclause of IEC 62841-1:2014 is not mentioned in this document, that
143 subclause applies as far as reasonable. Where this document states "addition", "modification"
144 or "replacement", the relevant text in IEC 62841-1 is to be adapted accordingly.
145 The following print types are used:
146 – requirements: in roman type;
147 – test specifications: in italic type;
148 – terms defined in Clause 3: in bold type;
149 – notes: in small roman type.
150 Subclauses, notes, tables and figures which are additional to those in IEC 62841-1:2014 are
151 numbered starting from 101.
152 Subclauses, notes, tables and figures in Annex K which are additional to those in the main body
153 of this document are numbered starting from 301.
154 A list of all parts in the IEC 62841 series, published under the general title Electric motor-
155 operated hand-held tools, transportable tools and lawn and garden machinery – Safety, can be
156 found on the IEC website.
157 The committee has decided that the contents of this document will remain unchanged until the
158 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
159 specific document. At this date, the document will be
160 • reconfirmed,
161 • withdrawn,
162 • replaced by a revised edition, or
163 • amended.
164 NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
165 organizations may need a transitional period following publication of a new, amended or revised IEC publicati on in
166 which to make products in accordance with the new requirements and to equip themselves for conducting new or
167 revised tests.
168 It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
169 not earlier than 36 months from the date of publication.
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172 INTRODUCTION
173 The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed
174 that compliance with this document may involve the use of patents concerning prevention of
175 inadvertent starting given in Subclause 21.18.102.
176 IEC takes no position concerning the evidence, validity and scope of this patent right.
177 The holders of these patent rights have assured the IEC that they are willing to negotiate
178 licences under reasonable and non-discriminatory terms and conditions with applicants
179 throughout the world. In this respect, the statements of the holders of these patent rights are
180 registered with IEC. Information may be obtained from:
181 Andreas Stihl AG & Co. KG
182 Stuttgarter Strasse 80
183 71332 Waiblingen, Germany
184 Husqvarna AB
185 SE-561 82 Huskvarna
186 Sweden
187 Robert Bosch GmbH
188 Postfach 30 02 20
189 D-70442 Stuttgart, Germany
190 Attention is drawn to the possibility that some of the elements of this document may be the
191 subject of patent rights other than those identified above. IEC shall not be held responsible for
192 identifying any or all such patent rights.
193 ISO (www.iso.org/patents) and IEC (http://patents.iec.ch) maintain on-line data bases of
194 patents relevant to their standards. Users are encouraged to consult the data bases for the
195 most up to date information concerning patents.
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198 ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
199 TOOLS AND LAWN AND GARDEN MACHINERY –
200 SAFETY –
202 Part 4-9: Particular requirements for battery-powered chain saws for tree
203 service
206 1 Scope
207 Replacement:
208 This document applies to rechargeable battery-powered motor-operated or magnetically driven
209 chain saws for tree service, hereinafter referred to as chain saws or machines, having a
210 maximum mass of 5,0 kg with the heaviest detachable battery pack(s), if any, as described in
211 IEC 62841-1:2014, K.8.14.2 e) 2) installed but without a guide bar or saw chain fitted and with
212 the lubrication tank, if any, empty. Chain saws covered by this document are intended to be
213 used for pruning and dismantling standing tree crowns.
214 The chain saws covered by this document are designed only to be operated with the right hand
215 on the rear handle and the left hand on the front handle.
216 This document does not apply to
217 − chain saws supplied by mains power or power from non-isolated sources that permit the
218 machine to be used while connected to such power supplies; or
219 − chain saws supplied by integral batteries; or
220 − chain saws for cutting wood as covered by IEC 62841-4-1; or
221 − chain saws for forest service as covered by ISO 11681-1; or
222 − chain saws designed for use in conjunction with a guide-plate and riving knife or in any other
223 way such as with a support or as a stationary or transportable machine ; or
224 − pole-mounted pruners; or
225 − pruning saws.
226 NOTE 1 Pole-mounted pruners will be covered by a future part of IEC 62841-4.
227 NOTE 2 Pruning saws will be covered by a future part of IEC 62841-4.
228 The maximum rated voltage for machines and battery packs is 75 V d.c.
229 Battery machines covered by this document are not considered to be class I tools, class II
230 tools or class III tools and therefore are not required to have basic insulation,
231 supplementary insulation or reinforced insulation. Electric shock hazard is considered to
232 exist only between parts of opposite polarity.
233 This document deals with the hazards presented by machines which are encountered by all
234 persons in the normal use and reasonably foreseeable misuse of the machines.
235 When evaluating a rechargeable battery pack for protection against electric shock during
236 charging, creepage distances, clearances and distances through insulation, the relevant
237 requirements of this document are applicable with the battery pack fitted to the intended
238 charger.
239 Since rechargeable battery packs for machines are submitted to different use patterns (such
240 as rough use, high charging and discharging currents) their safety can be evaluated only by
241 this document and not by using other standards for rechargeable battery packs, such as
242 IEC 62133-1:2017 or IEC 62133-2:2017, unless otherwise indicated in this document. All
243 relevant aspects related to the safety of rechargeable batteries are addressed in this document,
244 such that the requirements of IEC 62133-1:2017 or IEC 62133-2:2017 need not be separately
245 applied.
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246 When evaluating the risk of fire associated with rechargeable battery packs for machines,
247 consideration has been given to the fact that these battery packs are unattended energy
248 sources and have been evaluated as such in this document. Requirements in other standards
249 regarding the risk of fire due to the charging of these battery packs are therefore considered
250 to be fulfilled.
251 This document also addresses requirements covering the use of lithium-ion cells employed in
252 battery systems in machines. The following is considered within the context of these
253 requirements:
254 − These requirements address the risk of fire or explosion of these batteries and not any
255 possible hazards associated with toxicity nor potential hazards associated with
256 transportation or disposal.
257 NOTE 3 IEC 62281:2019 covers the safety aspects of lithium-ion batteries during transport.
258 − Battery systems covered by these requirements are not intended to be serviced by the end
259 user.
260 − These requirements are intended to provide comprehensive evaluation of a battery only if
261 used in products covered by this document.
262 − These requirements address the safety of lithium-ion battery systems during storage and
263 use including discharge and charge. These requirements are only considered to be
264 supplementary requirements in regards to battery charger fire and electric shock.
265 − These requirements refer to and require parameters supplied in reference to the cells that
266 establish conditions for safe use of those cells. Those parameters form the basis of
267 acceptance criteria for a number of tests contained herein. This document does not
268 independently evaluate the safety of cells. These parameters, taken as a set, constitute the
269 “Specified Operating Region” for a cell. There may be several sets of specified operating
270 region(s).
271 This document does not apply to machines using general purpose batteries installed by the
272 user and this document alone will not be sufficient to ensure all hazards are considered for
273 these products.
274 This document does not apply to the safety of battery chargers themselves.
275 NOTE 4 IEC 60335-2-29 covers a variety of chargers.
276 2 Normative references
277 IEC 62841-1:2014, Clause 2 is applicable, except as follows:
278 Replacement of undated normative reference for ISO 3744:
279 ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
280 noise sources using sound pressure – Engineering methods for an essentially free field over a
281 reflecting plane
282 Replacement of undated normative reference for ISO 11203:
283 ISO 11203:1995, Acoustics – Noise emitted by machinery and equipment – Determination of
284 emission sound pressure levels at a work station and at other specified positions from the sound
285 power level
286 Amendment 1:2020
287 Addition:
288 IEC 62841-1:2014, Electric motor-operated hand-held tools, transportable tools and lawn and
289 garden machinery – Safety – Part 1: General requirements
290 ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
291 ISO 3864-3:2012, Graphical symbols – Safety colours and safety signs – Part 3: Design
292 principles for graphical symbols used in safety signs

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293 ISO 6533:2020, Forestry machinery – Portable Chain saw front hand-guard – Dimensions and
294 clearances
295 ISO 6534:2007, Forestry machinery - Portable Chain saw hand-guards – Mechanical strength
296 Amendment 1:2012
297 ISO 7914:2002, Forestry machinery – Portable Chain saws – Minimum handle clearance and
298 sizes
299 Amendment 1:2012
300 ISO 7915:2021, Forestry machinery – Portable Chain saws – Determination of handle strength
301 ISO 8334:2007, Forestry machinery – Portable Chain saws – Determination of balance and
302 maximum holding moment
303 ISO 9518:2018, Forestry machinery – Portable Chain saws – Kickback test
304 ISO 10726:2020, Portable Chain saws – Chain catcher – Dimensions and mechanical strength
305 ISO 11681-2:2022, Machinery for forestry – Portable Chain saw safety requirements and testing
306 – Part 2: Chain saws for tree service
307 ISO 13772:2018, Forestry machinery - Portable Chain saws - Non-manually actuated chain
308 brake performance
309 Amendment 1:2020
310 ISO 17080:2005, Manually portable agricultural and forestry machines and powered lawn and
311 garden equipment - Design principles for single-panel product safety labels
312 ISO 22868:2021, Forestry and gardening machinery - Noise test code for portable hand-held
313 machines with internal combustion engine - Engineering method (Grade 2 accuracy)
314 3 Terms and definitions
315 IEC 62841-1:2014, Clause 3 is applicable, except as follows:
316 3.101
317 bar tip guard
318 shield that prevents contact with the saw chain at the tip of the guide bar
319 3.102
320 chain brake
321 function or device for stopping the saw chain activated manually or non-manually when
322 kickback occurs
323 3.102.1
324 manually activated chain brake
325 braking function triggered by the hand of the operator
326 3.102.2
327 non-manually activated chain brake
328 braking function triggered by kickback motion independent of operator activation
329 3.103
330 chain catcher
331 device for restraining the saw chain if it breaks or derails (see Figure 101)
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333 3.104
334 chain saw for tree service
335 specialized machine of limited mass for cutting wood with a saw chain, designed for pruning
336 and dismantling standing tree crowns and consisting of an integrated unit of handles, motor,
337 guide bar and saw chain, designed to be supported with two hands (see Figure 101)
338 3.105
339 cutting length
340 approximate effective length of cut of the chain saw
341 Note 101 to entry: The method for determining cutting length is specified in K.21.102
342 3.106
343 drive sprocket
344 chain drive wheel with teeth
345 3.107
346 front hand-guard
347 guard between the front handle and the saw chain for protecting the hand from injuries if the
348 hand slips off the handle (see Figure 101)
349 3.108
350 front handle
351 support handle located at or towards the front of the machine (see Figure 101)
352 3.109
353 guide bar
354 attachment that supports and guides the saw chain (see Figure 101)
355 3.110
356 kickback
357 rapid upward and/or backward motion of the chain saw which can occur when the moving saw
358 chain contacts an object such as a log or branch near the tip of the guide bar or when the
359 wood closes in and pinches the moving saw chain
360 3.111
361 maximum speed
362 highest steady-state saw chain speed attainable under all conditions of normal use, including
363 no-load, when adjusted in accordance with the manufacturer’s specifications and/or instructions
364 Note 101 to entry: The steady-state saw chain speed excludes transients such as overshoot that may occur before
365 attaining a steady-state condition.
366 3.112
367 operator presence sensor
368 device to detect the presence of an operator’s hand
369 3.113
370 rear hand-guard
371 extension on the lower part of the rear handle for protecting the hand from the saw chain if it
372 breaks or derails (see Figure K.302)
373 3.114
374 rear handle
375 support handle located at or towards the rear of the machine (see Figure 101)
376 3.115
377 saw chain
378 attachment serving as a cutting tool, consisting of drive links and cutters (see Figure 101 and
379 Figure K.307)
380 3.116
381 spiked bumper
382 device fitted in front of the guide bar mounting point, acting as a pivot when in contact with a
383 tree or log (see Figure 101)

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386 Key
387 1 rear handle
388 2 operator presence sensor
389 3 power switch
390 4 front handle
391 5 lock-off device
392 6 front hand-guard
393 7 guide bar
394 8 guide bar cover
395 9 attachment device
396 10 chain catcher
397 11 spiked bumper
398 12 saw chain
399 13 drive sprocket cover
400 Figure 101 – Chain saw nomenclature
401 4 General requirements
402 IEC 62841-1:2014, Clause 4 is applicable.
403 5 General conditions for the tests
404 IEC 62841-1:2014, Clause 5 is applicable.
405 6 Radiation, toxicity and similar hazards
406 IEC 62841-1:2014, Clause 6 is applicable.
407 7 Classification
408 IEC 62841-1:2014, Clause 7 is applicable.
409 8 Marking and instructions
410 IEC 62841-1:2014, Clause 8 is applicable.
411 9 Protection against access to live parts
412 IEC 62841-1:2014, Clause 9 is applicable.

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413 10 Starting
414 IEC 62841-1:2014, Clause 10 is not applicable.
415 11 Input and current
416 IEC 62841-1:2014, Clause 11 is not applicable.
417 12 Heating
418 IEC 62841-1:2014, Clause 12 is applicable.
419 13 Resistance to heat and fire
420 IEC 62841-1:2014, Clause 13 is applicable.
421 14 Moisture resistance
422 IEC 62841-1:2014, Clause 14 is not applicable.
423 15 Resistance to rusting
424 IEC 62841-1:2014, Clause 15 is applicable.
425 16 Overload protection of transformers and associated circuits
426 IEC 62841-1:2014, Clause 16 is not applicable.
427 17 Endurance
428 IEC 62841-1:2014, Clause 17 is not applicable.
429 18 Abnormal operation
430 IEC 62841-1:2014, Clause 18 is applicable.
431 19 Mechanical hazards
432 IEC 62841-1:2014, Clause 19 is applicable.
433 20 Mechanical strength
434 IEC 62841-1:2014, Clause 20 is applicable.
435 21 Construction
436 IEC 62841-1:2014, Clause 21 is applicable.
437 22 Internal wiring
438 IEC 62841-1:2014, Clause 22 is applicable.
439 23 Components
440 IEC 62841-1:2014, Clause 23 is applicable.
441 24 Supply connection and external flexible cords
442 IEC 62841-1:2014, Clause 24 is applicable.
443 25 Terminals for external conductors
444 IEC 62841-1:2014, Clause 25 is not applicable.

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445 26 Provision for earthing
446 IEC 62841-1:2014, Clause 26 is not applicable.
447 27 Screws and connections
448 IEC 62841-1:2014, Clause 27 is applicable.
449 28 Creepage distances, clearances and distances through insulation
450 IEC 62841-1:2014, Clause 28 is not applicable.
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453 Annexes
454 The annexes of Part 1 are applicable except as follows.
455 Annex I
456 (informative)
458 Measurement of noise and vibration emissions
459 NOTE In Europe (EN IEC 62841-4-9), Annex I is normative.
460 I.2 Noise test code (grade 2)
461 This clause of IEC 62841-1:2014 is applicable, except as follows.
463 I.2.2.1 General
464 Replacement:
465 The sound power level shall be measured using a hemispherical measurement surface
466 according to Figure I.101 and ISO 3744:2010. The acoustic environment, instrumentation,
467 quantities to be measured, quantities to be determined, and the measurement procedure are
468 specified in ISO 3744:2010.
469 The sound power level shall be given as A-weighted sound power level in dB reference 1 pW.
470 The A-weighted sound pressure levels, from which the sound power is to be determined, shall
471 be measured directly, and not calculated from frequency band data. Measurements shall be
472 made outdoors or indoors in an essentially free field.
473 NOTE In Europe, for chain saws, the determination of the sound power level in accordance with I.2.2.4 also provides
474 the basis for the determination of the A-weighted measured and guaranteed sound power level L required by the
WA
475 European Directive 2000/14/EC and its amendments.
477 Figure I.101 - Microphone positions on the hemisphere
479 I.2.2.2 This subclause of IEC 62841-1:2014 is not applicable.
480 I.2.2.3 This subclause of IEC 62841-1:2014 is not applicable.
481 I.2.2.4 Lawn and garden machinery

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482 Replacement:
483 The test environment outdoors shall be a flat open space (a slope, if any, not exceeding 5/100),
484 visibly free of sound-reflecting objects (buildings, trees, poles, sign boards, etc.) within a
485 circular area with a radius equal to approximately three times the radius of the hemispherical
486 measurement surface used.
487 For the determination of sound power level, ISO 3744:2010 shall be used subject to the
488 following modifications:
489 – the microphone array shall be six microphone positions according to Figure I.101 and Table
490 I.101;
491 – for outdoor and indoor measurements the reflecting surface shall be replaced by an artificial
492 surface according to I.2.2.101 or a natural ground surface according to I.2.2.102.
493 Reproducibility of results using natural grass or other organic material is lik ely to be worse
494 than that required for Grade 2 of accuracy. In case of dispute, measurements shall be
495 carried out in the open air and on the artificial surface according to I.2.2.101;
496 – the measurement surface shall be a hemisphere with a radius r = 4 m;
497 – for measurements outdoors, K = 0;
2A
498 – for measurements outdoors the environmental conditions shall be within the limits specified
499 by the manufacturers of the measuring equipment. The ambient air temperature shall be in
500 the range from -10 °C to 30 °C and the wind speed shall be less than 5 m/s. A wind screen
501 shall be used whenever the wind speed exceeds 1 m/s;
502 – for measurements indoors the environment shall be according to ISO 3744:2010 and the
503 value of K2A, determined without artificial surface and in accordance with Annex A of ISO
504 3744:2010, shall be ≤ 2 dB, in which case K2A shall be disregarded.
506 The A-weighted sound power level, L , in dB, shall be calculated in accordance with
WA
507 ISO 3744:2010, 8.2.5, as follows:
S
508 LL=+10lg( ) dB (I.101)
WA pA
S
509 with L determined from
pA

1 0,1L
pA,i
510 L = 10lg 10 −K −K dB
pA  1A 2A

i=1

511 where
is the A-weighted surface sound pressure level according to ISO 3744:2010,

L
pfA
8.2.4, in dB;
th

L
is the A-weighted sound pressure level measured at the i microphone
pA,i
position, in dB;
K is the background noise correction in dB, A-weighted;
1A
K
is the environmental correction in dB, A-weighted according to the
2A
requirements of this noise test code K = 0 dB;
2A
S
is the area of the measurement surface, in m ;
S
= 1 m .
512 For the hemispherical measurement surface, the area S of the measurement surface is
513 calculated as follows:
514 S = 2πr
515 where the radius of the hemisphere, r = 4 m

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516 from equation (I.101)
517 LL= +20 dB
WA pA
519 Table I.101 – Co-ordinates of microphone positions
Position x y z
No.
1 +0,6555 r +0,6555 r 1,5 m
2 −0,6555 r +0,6555 r 1,5 m
3 −0,6555 r −0,6555 r 1,5 m
4 +0,6555 r −0,6555 r 1,5 m
5 −0,27 r +0,65 r 0,71 r
6 +0,27 r −0,65 r 0,71 r
521 I.2.2.101 Requirements for an artificial surface
522 The artificial surface shall have absorption coefficients as given in Table I.102, measured in
523 accordance with ISO 354:2003.
524 Table I.102 – Absorption coefficients
Frequencies Absorption
Tolerance
Hz coefficients
125 0,1 ± 0,1
250 0,3 ± 0,1
500 0,5 ± 0,1
1 000 0,7 ± 0,1
2 000 0,8 ± 0,1
4 000 0,9 ± 0,1
526 The artificial surface shall be placed on a hard, reflecting surface and have a size of at least
527 3,6 m × 3,6 m. It shall be placed so that its geometrical centre coincides with the origin of the
528 coordinate system of the microphone positions. The construction of the supporting structure
529 shall be such that the requirements for the acoustic properties are also met with the absorptive
530 material in place. The structure shall support the weight of an operator when positioning the
531 machine on the structure and the weight of the machine to avoid compression of the absorbing
532 material.
533 NOTE 101 See Annex CC for an example of a material and construction which can be expected to fulfil these
534 requirements.
535 I.2.2.102 Requirements for natural ground surface
536 The test environment, within a circular area with a radius equal to approximately the radius of
537 the hemisphere measurement surface used, shall be covered with high-quality natural grass.
538 Before the measurements are taken, the grass shall be cut with a lawnmower to a height of cut
539 as near as possible to 30 mm. The surface shall be clean of grass clippings and debris and
540 shall be visibly free of moisture, frost, or snow.
541 I.2.3 Emission sound pressure level determination
542 I.2.3.1 Hand-held tools
543 Replacement:
544 The A-weighted emission sound pressure level at the workstation, L , shall be determined in
pA
545 accordance with ISO 11203 as follows:

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L = L −Q
pA WA
547 where Q = 8 dB.
548 NOTE 1 This value of Q has been determined, during experimental investigations, to be applicable to chain saws.
549 The resulting A-weighted emission sound pressure level at the workstation is equivalent to the v alue of the surface
550 sound pressure level at a distance of 0,7 m from the power tool. This distance has been chosen to give satisfactory
551 reproducibility of results, and to permit comparison of the acoustic performance of different chain saws which do not,
552 in general, have uniquely defined workstations. Under free field conditions, where it may be required to estimate the
553 emission sound pressure level, L , at a distance r in m from the geometric centre of the power tool, this can be
pA,r1 1
554 done by applying the formula:
0,7
555 L = L + 20 lg() dB
pA,r1 pA
r
556 NOTE 2 At any given position in relation to a particular machine, and for given mounting and operating conditions,
557 the emission sound pressure levels determined by the method of this standard will in general be lower than the
558 directly measured sound pressure levels for the same machine in the typical workroom where it is used. This is due
559 to the influence of sound reflecting surfaces in the workroom compared to the free field conditions of the test specified
560 here. A method of calculating the sound pressure levels in the vicinity of a machine operating alone in a workroom
561 is given in ISO/TR 11690-3. Commonly observed differences are 1 dB to 5 dB, but in extreme cases the difference
562 might be even greater.
563 NOTE 3 The C-weighted peak emission level is not expected to exceed 130 dB on these machines, since these
564 machines are relatively small and do not generate impulse noise.
565 I.2.3.2 Transportable power tools
566 IEC 62841-1:2014, Subclause I.2.3.2 is not applicable.
567 I.2.3.3 Lawn and garden machinery
568 Replacem
...