IEC 60335-2-107:2017

IEC 60335-2-107 ®
Edition 2.0 2017-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-107: Particular requirements for robotic battery powered electrical
lawnmowers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-107: Exigences particulières relatives aux tondeuses à gazon
électriques robotisées alimentées par batterie

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IEC 60335-2-107 ®
Edition 2.0 2017-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-107: Particular requirements for robotic battery powered electrical

lawnmowers
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-107: Exigences particulières relatives aux tondeuses à gazon

électriques robotisées alimentées par batterie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 65.060.70 ISBN 978-2-8322-5105-8

– 2 – IEC 60335-2-107:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirement . 13
5 General conditions for the tests . 13
6 Classification . 13
7 Marking and instructions . 14
8 Protection against access to live parts . 19
9 Starting of motor-operated appliances . 20
10 Power input and current . 20
11 Heating . 20
12 Void . 20
13 Leakage current and electric strength at operating temperature . 20
14 Transient overvoltages . 20
15 Moisture resistance . 20
16 Leakage current and electric strength . 20
17 Overload protection of transformers and associated circuits . 21
18 Endurance . 21
19 Abnormal operation . 21
20 Stability and mechanical hazards . 22
21 Mechanical strength . 31
22 Construction . 35
23 Internal wiring . 44
24 Components . 44
25 Supply connection and external flexible cords . 45
26 Terminals for external conductors . 45
27 Provision for earthing . 45
28 Screws and connections . 45
29 Clearances, creepage distances and solid insulation . 45
30 Resistance to heat and fire . 46
31 Resistance to rusting . 46
32 Radiation, toxicity and similar hazards . 46
Annexes . 56
Annex B (normative) Appliances powered by rechargeable batteries . 56
Annex R (normative) Software evaluation . 57
Annex S (normative) Battery-operated appliances powered by batteries that are non-

rechargeable or not recharged in the appliance . 59
Annex AA (normative) Calculation of kinetic energy of pivoting cutting elements . 60
Annex BB (normative) Test enclosure construction . 62
Annex CC (normative) Base for thrown object test enclosure . 67

Annex DD (normative) Target panel elevation zones and recommended test report for
thrown object test . 69
Annex EE (normative) Safety signs . 71
Annex FF (informative) Noise test code – Engineering method (grade 2) . 74
Annex GG (informative) Example of a material and construction fulfilling the
requirements for an artificial surface . 79
Annex HH Void . 81
Annex II Void . 82
Annex JJ (informative) Operation of the lift sensor, tilt sensor, obstruction sensor and
rollover sensor . 83
Annex KK (normative) Additional requirements for battery operation and charging . 87
Bibliography . 95

Figure 101 – Example of test cycles (see 20.102.2.2) . 47
Figure 102 – Foot probe test (see 20.102.4.1.2 and 20.102.4.1.3) . 48
Figure 103 – Impact test fixture (see 21.101.2) . 49
Figure 104 – Example of structural integrity test fixtures (see 21.101.4.2.1) . 51
Figure 105 – Finger probe test – Illustrations showing application of probe, insertion
depth limited according to the geometry of the enclosure . 52
Figure 106 – Obstruction sensor test – Illustration showing typical arrangement (see
22.105.2) . 53
Figure 107 – Foot probe for standing child . 54
Figure 108 – Measurement of clearances. 55
Figure AA.1 – Measurement of the reckonable length L . 61
Figure BB.1 – Thrown object test enclosure – General layout . 63
Figure BB.2 – Thrown object test enclosure . 64
Figure BB.3 – Test enclosure walls and base . 65
Figure BB.4 – Test fixture for corrugated fibreboard penetration test . 66
Figure CC.1 – Thrown object test enclosure – Base detail . 67
Figure CC.2 – Nail plan of test enclosure base . 68
Figure DD.1 – Recommended test data sheet . 70
Figure EE.1 – Safety sign illustrating – "WARNING – Read user instructions before
operating the machine" . 71
Figure EE.2 – Alternative safety sign for the supplementary safety information panel of
EE.1 (safety sign 1641 of ISO 7000) . 71
Figure EE.3 – Alternative safety sign for the supplementary safety information panel of
EE.1 (safety sign M002 of ISO 7010) . 71
Figure EE.4 – Safety signs illustrating – "WARNING – Keep a safe distance from the
machine when operating" . 72
Figure EE.5 – Safety sign illustrating – "WARNING – Remove the disabling device
before working on or lifting the machine" . 72
Figure EE.6 – Safety sign illustrating – "WARNING – Operate the disabling device
before working on or lifting the machine" . 73
Figure EE.7 – Safety sign illustrating – "WARNING – Do not ride on the machine" . 73
Figure FF.1 – Microphone positions on the hemisphere (see Table FF.1). 75
Figure GG.1 – Sketch of the measurement surface covered with an artificial surface
(not to scale). 80

– 4 – IEC 60335-2-107:2017 © IEC 2017
Figure JJ.1 – 22.105.3 Lift sensor (LS) and 22.105.1 Tilt sensor (TS) . 84
Figure JJ.2 – 22.105.2 Obstruction sensor (OS) . 85
Figure JJ.3 – 22.105.4 Rollover sensor (RS) . 86

Table 101 – Sizing of test fixture air inlet holes . 33
Table 102 – Minimum creepage distances and clearances between parts of opposite
polarity . 46
Table FF.1 – Co-ordinates of microphone positions . 75
Table FF.2 – Absorption coefficients . 76

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-107: Particular requirements for robotic battery
powered electrical lawnmowers
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60335-2-107 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
This second edition cancels and replaces the first edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Clause 7: Markings and instructions, new requirements for markings, warnings and the
instruction manual;
b) Clause 8: Protection against access to live parts, new requirements for protection against
electric shock for hazardous battery voltages;
c) Clause 20: Stability and mechanical hazards, revised requirements for manual controller,
manual stop, cutting means stopping time, traction drive stopping and restart procedures,
as well as a new standing child foot probe test;

– 6 – IEC 60335-2-107:2017 © IEC 2017
d) Clause 22: Construction, revised requirements for disabling devices, working area,
perimeter delimiter, sensors and manual controller, as well as new requirements for
machine connectors used for charging and contact surfaces used as obstruction sensing
devices;
e) Clause 24: Components, revised requirements for switches;
f) Clause 29: Clearances, creepage distances and solid insulation, revised requirements for
the machine and non-mains-powered peripherals.
The text of this standard is based on the following documents:
FDIS Report on voting
116/350/FDIS 116/354/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-107 is to be used in conjunction with the fifth edition (2010) of IEC 60335-1 and its
amendments.
NOTE When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This Part 2-107 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert it into the IEC standard: Particular requirements for robotic battery powered electrical
lawnmowers.
When a particular subclause of Part 1 is not mentioned in this Part 2-107, that subclause
applies as far as is relevant. Where this standard states “addition”, “modification” or
“replacement”, the relevant text in Part 1 is to be adapted accordingly.
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes and figures which are additional to those in Part 1 are numbered starting
from 101. Additional annexes are lettered AA, BB, etc.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
It has been assumed in the drafting of this document that the execution of its provisions is
entrusted to appropriately qualified and experienced persons.
This document recognizes the internationally accepted level of protection against hazards
such as electrical, mechanical, thermal, fire and radiation of machines when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of machines.
This document takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the machine is connected to the supply
mains. However, national wiring rules may differ.
If a machine within the scope of this document also incorporates functions that are covered by
another Part 2 of IEC 60335, the relevant Part 2 is applied to each function separately, as far
as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a Part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the Part 2 standards have determined that it is
not necessary to specify particular requirements for the machine in question over and above the general
requirements.
This standard series is a product family standard series dealing with the safety of appliances
and takes precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or Part 2 documents.
A machine that complies with the text of this document will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
A machine employing materials or having forms of construction differing from those detailed in
the requirements of this document may be examined and tested according to the intent of the
requirements and, if found to be substantially equivalent, may be considered to comply with
the document.
– 8 – IEC 60335-2-107:2017 © IEC 2017
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-107: Particular requirements for robotic battery
powered electrical lawnmowers
1 Scope
Replacement:
This document specifies safety requirements and their verification for the design and
construction of robotic battery powered electrical rotary lawnmowers and their peripherals
with the rated voltage of the battery being not more than 75 V d.c.
EMC and environmental aspects, except noise, have not been considered in this standard.
This document does not apply to the additional risks associated with internal combustion
engine(s), hybrid and fuel cell powered machines and associated charging systems.
This document deals with all the significant hazards presented by battery powered robotic
lawnmowers and their peripherals when they are used as intended and under conditions of
misuse which are reasonably foreseeable.
Throughout this document, the term machine is used to refer to the robotic lawnmower,
separate from its charging station.
This document also provides requirements for the safety of mains powered charging stations
and signal sources for perimeter delimiters.
Additional battery operation and charging requirements for robotic lawnmowers, including
the charging of lithium ion batteries, are specified in Annex KK which replaces Annexes B and
S (except for requirements for non-rechargeable batteries) of Part 1.
This document is not applicable to machines which are manufactured before the date of
publication of this document by IEC.
NOTE Informative Annex FF is provided as a test code for convenience to the users of this document.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60320 (all parts), Appliance couplers for household and similar general purposes
IEC 60335-2-29:2016, Household and similar electrical appliances – Safety – Part 2-29:
Particular requirements for battery chargers
IEC 62133 (all parts), Secondary cells and batteries containing alkaline or other non-acid
electrolytes- safety requirements for portable sealed secondary cells, and for batteries made
from them, for use in portable applications
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 683-4:2014, Heat-treatable steels, alloy steels and free-cutting steels – Part 4: Free-
cutting steels
ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
noise sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 3767-1, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Symbols for operator controls and other displays – Part 1: Common symbols
ISO 3767-3, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Symbols for operator controls and other displays – Part 3: Symbols for powered
lawn and garden equipment
ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of
machinery and equipment
ISO 7000:2014, Graphical symbols for use on equipment – Index and synopsis
ISO 7010:2011, Graphical symbols – Safety colours and safety signs – Registered safety
signs
ISO 11201:2010, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions in an
essentially free field over a reflecting plane with negligible environmental corrections
ISO 11203:1995, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions from the
sound power level
ISO 11684, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Safety signs and hazard pictorials – General principles
ISO 11688-1, Acoustics – Recommended practice for the design of low-noise machinery and
equipment – Part 1: Planning
ISO 12100:2010, Safety of machinery – General principles for design – Risk assessment and
risk reduction
ISO 13857:2008, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbs
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.5.1 Addition:
Note 101 to entry: Machines and charging stations are not considered to be portable appliances.
3.5.4 Addition:
Note 101 to entry: Machines are not considered to be fixed appliances. Charging stations are considered to be
fixed appliances.
3.101
automatic mode
autonomous operation of the machine without the use of a manual controller
3.102
battery
assembly of one or more cells intended to provide electrical current to the machine
3.103
cell
basic functional electrochemical unit containing an assembly of electrodes, electrolyte,
container, terminals, and usually separators, that is a source of electrical energy by direct
conversion of chemical energy
– 10 – IEC 60335-2-107:2017 © IEC 2017
3.104
charging station
automatic battery charging facility located on or within the working area
3.105
control
means or device which will control the operation of the machine or any specific operating
function thereof
3.106
cutting means
mechanism used to provide the cutting action
Note 1 to entry: The term “blade” can be used in warnings and instructions to denote “cutting means”.
3.107
cutting means enclosure
part or assembly which provides the protective means around the cutting means
3.108
cutting means tip circle
path described by the outermost point of the cutting means as it rotates about its shaft axis
3.109
cutting position
any height setting of the cutting means designated by the manufacturer for cutting grass
3.110
disabling device
3.110.1
disabling device (removable)
part, such as for example a key, which prevents operation of the lawnmower when it is
removed
3.110.2
disabling device (code protected)
device which, when operated, prevents operation of the lawnmower and requires a coded
input (such as via a keypad) before it can operate
Note 1 to entry: See 22.103.
3.111
discharge chute
extension of the cutting means enclosure from the discharge opening, generally used to
control the discharge of material from the cutting means
3.112
discharge opening
gap or opening in the cutting means enclosure through which grass may be discharged
3.113
fully charged (battery/cell)
cell or battery charged to the maximum state of charge permitted by the battery charging
system intended for use with the machine
3.114
fully discharged (battery/cell)
battery or cell that has been discharged at C rate until one of the following conditions
occurs: discharge terminates due to protective circuitry or the battery (or cell) reaches a total
voltage with an average voltage per cell equal to the end-of-discharge voltage for the cell
chemistry being used unless a different end-of-discharge voltage is specified by the
manufacturer
Note 1 to entry: The end-of-discharge voltages for common cell chemistries are provided in KK.5.10.
3.115
general purpose (batteries/cells)
batteries and cells available from a variety of manufacturers, through a variety of outlets
intended for a variety of different manufacturers’ products
Note 1 to entry: 12 V automotive batteries and AA, C and D alkaline cells are examples of general purpose.
3.116
grass catcher
part or combination of parts which provides a means for collecting grass clippings or debris
3.117
guard
part of the machine or a component incorporated to provide protection for the operator and/or
bystander by means of a physical barrier
3.118
hazardous voltage
voltage between parts having an average value exceeding 60 V d.c. or exceeding 50 V peak
when the peak-to-peak ripple exceeds 10 % of the average value
3.119
intended use
any use of the machine which is reasonably foreseeable, as described in the instruction
manual, and which is consistent with such activities as cutting grass, starting, stopping, or
connecting to (or disconnecting from) a source of power
3.120
lawnmower
grass-cutting machine where the cutting means operates in a plane approximately parallel to
the ground and which uses the ground to determine the height of cut by means of wheels, air
cushion or skids, etc., and which utilises an electric motor for a power source
3.121
manual controller
device supplied by the manufacturer either connected by a wire or wireless that allows manual
operation of the machine
3.122
manual stop
manually actuated device using software-based or hardware-based components that overrides
all other controls and removes power to the motor(s) and brings all moving parts to a stop
3.123
maximum operating motor speed
the highest motor speed obtainable when adjusted in accordance with the manufacturers
specifications and/or instructions, with the cutting means engaged
3.124
mulching lawnmower
rotary lawnmower without discharge openings in the cutting means enclosure
3.125
operator control
any control requiring operator actuation to perform specific functions
Note 1 to entry: This includes controls on a manual controller.
3.126
operator presence control
control on a manual controller designed so that it will automatically interrupt the cutting
means when the operator's actuating force is removed

– 12 – IEC 60335-2-107:2017 © IEC 2017
3.127
perimeter delimiter
device(s) that defines the perimeter of the working area within which the machine can
operate automatically
Note 1 to entry: An example of a perimeter delimiter is a boundary wire that emits a signal to indicate the limit of
the working area.
3.128
peripherals
equipment additional to the machine itself that is provided by the manufacturer for intended
use of the machine, e.g. charging station(s), manual controller
3.129
power source
motor which provides mechanical energy for linear or rotational movement
3.130
remote setting device
setting device which is not connected by wire to the machine and designed to set the basic
functions of the machine
Note 1 to entry: A remote setting device is not a manual controller.
3.131
robotic lawnmower
unattended lawnmower that operates automatically
Note 1 to entry: When the term 'machine' is used in the text of this standard, it is used to denote a robotic
lawnmower.
3.132
rotary lawnmower
lawnmower in which the cutting means, cutting by impact, rotate about an axis (axes)
normal to the cutting plane
3.133
sensor
device that responds to physical stimuli (such as, but not limited to, heat, light, sound,
pressure, magnetism, motion) and transmits the resulting signal or data providing a
measurement, operating a control, or both
3.133.1
lift sensor
device that senses when all or part of the machine is lifted from the ground
3.133.2
obstruction sensor
device that senses when the machine contacts a person or an obstruction
3.133.3
tilt sensor
device that senses when the machine is at or above a predetermined angle of incline
3.133.4
rollover sensor
device that senses when the machine is inverted
3.134
stopping time
time elapsed between the instant when either a sensor is activated or the actuator on a
manual controller is released and the instant at which the machine or component comes to a
stop
3.135
thrown object hazard
potential for injury caused by object(s) propelled by the moving cutting means
3.136
traction drive
means (system) used to transmit power from the power source to the ground drives means
3.137
working area
any defined area in which the machine can function automatically
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.1 Addition:
Where an electronic speed control device can be adjusted, it is set for the highest speed.
5.2 Modification:
A new sample shall be used for each of the tests of Clause 21. However, at the
manufacturer’s discretion, fewer samples may be used.
Addition:
The cumulative stress resulting from successive tests on the battery is to be avoided.
If several tests are conducted on a single sample, then the results shall not be affected by
previous tests.
5.8.1 Replacement:
Unless otherwise specified, a fully charged battery shall be used for each test. Where for
consecutive tests the same battery is specified, there shall be a minimum of 1 min rest time
between tests.
5.17 Replacement:
Machines and peripherals powered by rechargeable batteries are evaluated to the additional
requirements in Annex KK.
Peripherals powered by batteries that are non-rechargeable are tested in accordance with
Annex S.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
This subclause is not applicable for machines and non-mains-powered peripherals.
Note 101 Machines and non-mains-powered peripherals covered by this standard are limited to those where the
only power source is a battery and are therefore considered not to be class I, class II, or class III appliances and
are not required to have basic insulation, supplementary insulation or reinforced insulation. Electric shock
hazard is considered to exist only between parts of opposite polarity where hazardous voltage is present.
Mains-powered peripherals shall be of one of the following classes with respect to protection
against electric shock:
– 14 – IEC 60335-2-107:2017 © IEC 2017
– with a rated voltage above 42 V shall be class II;
– supplied with SELV shall be at least class III.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Enclosures of machines shall be at least IPX1, except enclosures containing parts having a
working voltage that is a hazardous voltage shall be at least IPX4. Enclosures of charging
stations and other peripherals intended to be installed outdoors, if of class III construction,
shall be at least IPX1 or shall otherwise be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Replacement:
Machines and peripherals shall be marked as indicated below and additionally, as required,
by 7.1.101. Additional markings are allowed provided they do not give rise to
misunderstanding. Warnings shall be located in easily visible positions. If the first numeral for
the IP numbering is omitted, the omitted numeral shall be replaced by the letter X, for
example IPX4.
On the machine:
– IP number according to degree of protection against ingress of water, other than IPX0;
– symbol IEC 60417-5180 (2003-02), for class III appliances, if treated as a class III
appliance during charging. This marking is not necessary for machines that are operated
only by batteries (primary batteries or secondary batteries that are recharged outside of
the machine);
– business name and full address of the manufacturer and, where applicable, his authorized
representative;
– year of construction;
– the mass of the machine if it is greater than 25 kg;
– designation of the machine, where designation of the machine may be achieved by a
combination of letters and/or numbers provided that this code is explained by giving the explicit
designation such as “battery powered robotic lawnmowers” etc. in the instructions supplied with
the machine.
NOTE 1 An example of such code is “A123B”.
– designation of series or type, allowing the technical identification of the product. This may
be achieved by a combination of letters and/or numbers and may be combined with the
designation of the machine;
NOTE 2 The term “designation of series or type” is also known as model number.
– serial number, if any;
– other mandatory markings;
NOTE 3 For machines and their related products intended to be put on the market in the EEA, CE-marking as
defined in the applicable European Directive(s), e.g. the Machinery Directive.
– cutting width in centimetres.
– “WARNING – Read instruction manual before operating the machine”.
– “WARNING – Keep a safe distance from the machine when operating”.
– “WARNING – Do not ride on the machine”.
– “W
...

IEC 60335-2-107 ®
Edition 2.1 2020-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-107: Particular requirements for robotic battery powered electrical
lawnmowers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-107: Exigences particulières relatives aux tondeuses à gazon
électriques robotisées alimentées par batterie

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IEC 60335-2-107 ®
Edition 2.1 2020-02
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –

Part 2-107: Particular requirements for robotic battery powered electrical

lawnmowers
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-107: Exigences particulières relatives aux tondeuses à gazon

électriques robotisées alimentées par batterie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 65.060.70 ISBN 978-2-8322-7911-3

IEC 60335-2-107 ®
Edition 2.1 2020-02
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-107: Particular requirements for robotic battery powered electrical
lawnmowers
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-107: Exigences particulières relatives aux tondeuses à gazon
électriques robotisées alimentées par batterie

– 2 – IEC 60335-2-107:2017+AMD1:2020 CSV
© IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 General requirement . 14
5 General conditions for the tests . 14
6 Classification . 15
7 Marking and instructions . 15
8 Protection against access to live parts . 20
9 Starting of motor-operated appliances . 21
10 Power input and current . 21
11 Heating . 21
12 Void . 21
13 Leakage current and electric strength at operating temperature . 21
14 Transient overvoltages . 21
15 Moisture resistance . 21
16 Leakage current and electric strength . 22
17 Overload protection of transformers and associated circuits . 22
18 Endurance . 22
19 Abnormal operation . 22
20 Stability and mechanical hazards . 23
21 Mechanical strength . 34
22 Construction . 37
23 Internal wiring . 47
24 Components . 47
25 Supply connection and external flexible cords . 48
26 Terminals for external conductors . 48
27 Provision for earthing . 48
28 Screws and connections . 48
29 Clearances, creepage distances and solid insulation . 48
30 Resistance to heat and fire . 50
31 Resistance to rusting . 50
32 Radiation, toxicity and similar hazards . 51
Annexes . 66
Annex B (normative) Appliances powered by rechargeable batteries . 66
Annex R (normative) Software evaluation . 67
Annex S (normative) Battery-operated appliances powered by batteries that are non-
rechargeable or not recharged in the appliance . 69
Annex AA (normative) Calculation of kinetic energy of pivoting cutting elements . 70
Annex BB (normative) Test enclosure construction . 72

© IEC 2020
Annex CC (normative) Base for thrown object test enclosure . 77
Annex DD (normative) Target panel elevation zones and recommended test report for
thrown object test . 79
Annex EE (normative) Safety signs . 81
Annex FF (informative) Noise test code – Engineering method (grade 2) . 84
Annex GG (informative) Example of a material and construction fulfilling the
requirements for an artificial surface . 89
Annex HH Void . 91
Annex II Void . 92
Annex JJ (informative) Operation of the lift sensor, tilt sensor, obstruction sensor and
rollover sensor . 93
Annex KK (normative) Additional requirements for battery operation and charging . 98
Bibliography . 106

Figure 101 – Example of test cycles (see 20.102.2.2) . 51
Figure 102 – Foot probe test (see 20.102.4.1.2 and 20.102.4.1.3) . 52
Figure 103 – Impact test fixture (see 21.101.2) . 53
Figure 104 – Example of structural integrity test fixtures (see 21.101.4.2.1) . 55
Figure 105 – Finger probe test – Illustrations showing application of probe, insertion
depth limited according to the geometry of the enclosure . 57
Figure 106 – Obstruction sensor test – Illustration showing typical arrangement (see
22.105.2) . 58
Figure 107 – Foot probe for standing child . 59
Figure 108 – Measurement of clearances. 60
Figure 109 – Foot probe for kneeling child . 61
Figure 110 – Foot probe for kneeling child test positions . 63
Figure 111 – Test probe for the tests of 20.102.4.2.2.1 and 20.102.4.2.3 . 65
Figure AA.1 – Measurement of the reckonable length L . 71
Figure BB.1 – Thrown object test enclosure – General layout . 73
Figure BB.2 – Thrown object test enclosure . 74
Figure BB.3 – Test enclosure walls and base . 75
Figure BB.4 – Test fixture for corrugated fibreboard penetration test . 76
Figure CC.1 – Thrown object test enclosure – Base detail . 77
Figure CC.2 – Nail plan of test enclosure base . 78
Figure DD.1 – Recommended test data sheet . 80
Figure EE.1 – Safety sign illustrating – "WARNING – Read user instructions before
operating the machine" . 81
Figure EE.2 – Alternative safety sign for the supplementary safety information panel of
EE.1 (safety sign 1641 of ISO 7000) . 81
Figure EE.3 – Alternative safety sign for the supplementary safety information panel of
EE.1 (safety sign M002 of ISO 7010) . 81
Figure EE.4 – Safety signs illustrating – "WARNING – Keep a safe distance from the
machine when operating" . 82
Figure EE.5 – Safety sign illustrating – "WARNING – Remove the disabling device
before working on or lifting the machine" . 82

– 4 – IEC 60335-2-107:2017+AMD1:2020 CSV
© IEC 2020
Figure EE.6 – Safety sign illustrating – "WARNING – Operate the disabling device
before working on or lifting the machine" . 83
Figure EE.7 – Safety sign illustrating – "WARNING – Do not ride on the machine" . 83
Figure FF.1 – Microphone positions on the hemisphere (see Table FF.1). 85
Figure GG.1 – Sketch of the measurement surface covered with an artificial surface
(not to scale). 90
Figure JJ.1 – 22.105.3 Lift sensor (LS) and 22.105.1 Tilt sensor (TS) . 94
Figure JJ.2 – 22.105.2 Obstruction sensor (OS) . 95
Figure JJ.3 – 22.105.4 Rollover sensor (RS) . 97

Table 101 – Sizing of test fixture air inlet holes . 36
Table 102 – Minimum creepage distances and clearances between parts of opposite
polarity .
Table 102 – Minimum creepage distances and clearances between parts of different
potential . 49
Table 103 – Minimum total sum of creepage distances and clearances to accessible
surfaces for hazardous voltages . 50
Table FF.1 – Co-ordinates of microphone positions . 85
Table FF.2 – Absorption coefficients . 86

© IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-107: Particular requirements for robotic battery
powered electrical lawnmowers
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60335-2-107 edition 2.1 contains the second edition (2017-12) [documents 116/350/FDIS and
116/354/RVD] and its amendment 1 (2020-02) [documents 116/429/FDIS and 116/443/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
– 6 – IEC 60335-2-107:2017+AMD1:2020 CSV
© IEC 2020
International Standard IEC 60335-2-107 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
This second edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Clause 7: Markings and instructions, new requirements for markings, warnings and the
instruction manual;
b) Clause 8: Protection against access to live parts, new requirements for protection against
electric shock for hazardous battery voltages;
c) Clause 20: Stability and mechanical hazards, revised requirements for manual controller,
manual stop, cutting means stopping time, traction drive stopping and restart procedures,
as well as a new standing child foot probe test;
d) Clause 22: Construction, revised requirements for disabling devices, working area,
perimeter delimiter, sensors and manual controller, as well as new requirements for
machine connectors used for charging and contact surfaces used as obstruction sensing
devices;
e) Clause 24: Components, revised requirements for switches;
f) Clause 29: Clearances, creepage distances and solid insulation, revised requirements for
the machine and non-mains-powered peripherals.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-107 is to be used in conjunction with the fifth edition (2010) of IEC 60335-1 and its
amendments.
NOTE When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This Part 2-107 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert it into the IEC standard: Particular requirements for robotic battery powered electrical
lawnmowers.
When a particular subclause of Part 1 is not mentioned in this Part 2-107, that subclause
applies as far as is relevant. Where this standard states “addition”, “modification” or
“replacement”, the relevant text in Part 1 is to be adapted accordingly.
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes and figures which are additional to those in Part 1 are numbered starting
from 101. Additional annexes are lettered AA, BB, etc.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.

© IEC 2020
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 36 months from the date of publication.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 8 – IEC 60335-2-107:2017+AMD1:2020 CSV
© IEC 2020
INTRODUCTION
It has been assumed in the drafting of this document that the execution of its provisions is
entrusted to appropriately qualified and experienced persons.
This document recognizes the internationally accepted level of protection against hazards
such as electrical, mechanical, thermal, fire and radiation of machines when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of machines.
This document takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the machine is connected to the supply
mains. However, national wiring rules may differ.
If a machine within the scope of this document also incorporates functions that are covered by
another Part 2 of IEC 60335, the relevant Part 2 is applied to each function separately, as far
as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a Part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the Part 2 standards have determined that it is
not necessary to specify particular requirements for the machine in question over and above the general
requirements.
This standard series is a product family standard series dealing with the safety of appliances
and takes precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or Part 2 documents.
A machine that complies with the text of this document will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
A machine employing materials or having forms of construction differing from those detailed in
the requirements of this document may be examined and tested according to the intent of the
requirements and, if found to be substantially equivalent, may be considered to comply with
the document.
© IEC 2020
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-107: Particular requirements for robotic battery
powered electrical lawnmowers
1 Scope
Replacement:
This document specifies safety requirements and their verification for the design and
construction of robotic battery powered electrical rotary lawnmowers and their peripherals
with the rated voltage of the battery being not more than 75 V d.c.
EMC and environmental aspects, except noise, have not been considered in this standard.
This document does not apply to the additional risks associated with internal combustion
engine(s), hybrid and fuel cell powered machines and associated charging systems.
This document deals with all the significant hazards presented by battery powered robotic
lawnmowers and their peripherals when they are used as intended and under conditions of
misuse which are reasonably foreseeable.
Throughout this document, the term machine is used to refer to the robotic lawnmower,
separate from its charging station.
This document also provides requirements for the safety of mains powered charging stations
and signal sources for perimeter delimiters.
Additional battery operation and charging requirements for robotic lawnmowers, including
the charging of lithium ion batteries, are specified in Annex KK which replaces Annexes B and
S (except for requirements for non-rechargeable batteries) of Part 1.
This document is not applicable to machines which are manufactured before the date of
publication of this document by IEC.
NOTE Informative Annex FF is provided as a test code for convenience to the users of this document.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60320 (all parts), Appliance couplers for household and similar general purposes
IEC 60335-2-29:2016, Household and similar electrical appliances – Safety – Part 2-29:
Particular requirements for battery chargers
IEC 62133 (all parts), Secondary cells and batteries containing alkaline or other non-acid
electrolytes- safety requirements for portable sealed secondary cells, and for batteries made
from them, for use in portable applications
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 683-4:2014, Heat-treatable steels, alloy steels and free-cutting steels – Part 4: Free-
cutting steels
– 10 – IEC 60335-2-107:2017+AMD1:2020 CSV
© IEC 2020
ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
noise sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 3767-1, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Symbols for operator controls and other displays – Part 1: Common symbols
ISO 3767-3, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Symbols for operator controls and other displays – Part 3: Symbols for powered
lawn and garden equipment
ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of
machinery and equipment
ISO 7000:2014, Graphical symbols for use on equipment – Index and synopsis
ISO 7010:2011, Graphical symbols – Safety colours and safety signs – Registered safety
signs
ISO 8295:1995, Plastics – Film and sheeting – Determination of the coefficients of friction
ISO 11201:2010, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions in an
essentially free field over a reflecting plane with negligible environmental corrections
ISO 11203:1995, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions from the
sound power level
ISO 11684, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Safety signs and hazard pictorials – General principles
ISO 11688-1, Acoustics – Recommended practice for the design of low-noise machinery and
equipment – Part 1: Planning
ISO 12100:2010, Safety of machinery – General principles for design – Risk assessment and
risk reduction
ISO 13857:2008, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbs
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.5.1 Addition:
Note 101 to entry: Machines and charging stations are not considered to be portable appliances.
3.5.4 Addition:
Note 101 to entry: Machines are not considered to be fixed appliances. Charging stations are considered to be
fixed appliances.
3.101
automatic mode
autonomous operation of the machine without the use of a manual controller
Note 1 to entry: Operation of the machine without the use of a manual controller and without the cutting means
operating during set up of the working area is considered not to be operation in automatic mode.
3.102
battery
assembly of one or more cells intended to provide electrical current to the machine

© IEC 2020
3.103
cell
basic functional electrochemical unit containing an assembly of electrodes, electrolyte,
container, terminals, and usually separators, that is a source of electrical energy by direct
conversion of chemical energy
3.104
charging station
automatic battery charging facility located on or within the working area
3.105
control
means or device which will control the operation of the machine or any specific operating
function thereof
3.106
cutting means
mechanism used to provide the cutting action
Note 1 to entry: The term “blade” can be used in warnings and instructions to denote “cutting means”.
3.107
cutting means enclosure
part or assembly which provides the protective means around the cutting means
3.108
cutting means tip circle
path described by the outermost point of the cutting means as it rotates about its shaft axis
3.109
cutting position
any height setting of the cutting means designated by the manufacturer for cutting grass
3.110
disabling device
3.110.1
disabling device (removable)
part, such as for example a key, which prevents operation of the lawnmower when it is
removed
3.110.2
disabling device (code protected)
device which, when operated, prevents operation of the lawnmower and requires a coded
input (such as via a keypad) before it can operate
Note 1 to entry: See 22.103.
3.111
discharge chute
extension of the cutting means enclosure from the discharge opening, generally used to
control the discharge of material from the cutting means
3.112
discharge opening
gap or opening in the cutting means enclosure through which grass may be discharged
3.113
fully charged (battery/cell)
cell or battery charged to the maximum state of charge permitted by the battery charging
system intended for use with the machine

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© IEC 2020
3.114
fully discharged (battery/cell)
battery or cell that has been discharged at C rate until one of the following conditions
occurs: discharge terminates due to protective circuitry or the battery (or cell) reaches a total
voltage with an average voltage per cell equal to the end-of-discharge voltage for the cell
chemistry being used unless a different end-of-discharge voltage is specified by the
manufacturer
Note 1 to entry: The end-of-discharge voltages for common cell chemistries are provided in KK.5.10.
3.115
general purpose (batteries/cells)
batteries and cells available from a variety of manufacturers, through a variety of outlets
intended for a variety of different manufacturers’ products
Note 1 to entry: 12 V automotive batteries and AA, C and D alkaline cells are examples of general purpose.
3.116
grass catcher
part or combination of parts which provides a means for collecting grass clippings or debris
3.117
guard
part of the machine or a component incorporated to provide protection for the operator and/or
bystander by means of a physical barrier
3.118
hazardous voltage
voltage between parts having an average value exceeding 60 V d.c. or exceeding 50 V peak
when the peak-to-peak ripple exceeds 10 % of the average value
3.119
intended use
any use of the machine which is reasonably foreseeable, as described in the instruction
manual, and which is consistent with such activities as cutting grass, starting, stopping, or
connecting to (or disconnecting from) a source of power
3.120
lawnmower
grass-cutting machine where the cutting means operates in a plane approximately parallel to
the ground and which uses the ground to determine the height of cut by means of wheels, air
cushion or skids, etc., and which utilises an electric motor for a power source
3.121
manual controller
device supplied by the manufacturer either connected by a wire or wireless that allows manual
operation of the machine
3.122
manual stop
manually actuated device using software-based or hardware-based components that overrides
all other controls and removes power to the motor(s) and brings all moving parts to a stop
3.123
maximum operating motor speed
the highest motor speed obtainable when adjusted in accordance with the manufacturers
specifications and/or instructions, with the cutting means engaged
3.124
mulching lawnmower
rotary lawnmower without discharge openings in the cutting means enclosure

© IEC 2020
3.125
operator control
any control requiring operator actuation to perform specific functions
Note 1 to entry: This includes controls on a manual controller.
3.126
operator presence control
control on a manual controller designed so that it will automatically interrupt the cutting
means when the operator's actuating force is removed
3.127
perimeter delimiter
device(s) that defines the perimeter of the working area within which the machine can
operate automatically
Note 1 to entry: An example of a perimeter delimiter is a boundary wire that emits a signal to indicate the limit of
the working area.
3.128
peripherals
equipment additional to the machine itself that is provided by the manufacturer for intended
use of the machine, e.g. charging station(s), manual controller, signal source for perimeter
delimiter
3.129
power source
motor which provides mechanical energy for linear or rotational movement
3.130
remote setting device
setting device which is not connected by wire to the machine and designed to set the basic
functions of the machine
Note 1 to entry: A remote setting device is not a manual controller.
3.131
robotic lawnmower
unattended lawnmower that operates automatically
Note 1 to entry: When the term 'machine' is used in the text of this standard, it is used to denote a robotic
lawnmower.
3.132
rotary lawnmower
lawnmower in which the cutting means, cutting by impact, rotate about an axis (axes)
normal to the cutting plane
3.133
sensor
device that responds to physical stimuli (such as, but not limited to, heat, light, sound,
pressure, magnetism, motion) and transmits the resulting signal or data providing a
measurement, operating a control, or both
3.133.1
lift sensor
device that senses when all or part of the machine is lifted from the ground
3.133.2
obstruction sensor
device that senses when the machine contacts a person or an obstruction
3.133.3
tilt sensor
device that senses when the machine is at or above a predetermined angle of incline

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3.133.4
rollover sensor
device that senses when the machine is inverted
3.134
stopping time
time elapsed between the instant when either a sensor is activated or the actuator on a
manual controller is released and the instant at which the machine or component comes to a
stop
3.135
thrown object hazard
potential for injury caused by object(s) propelled by the moving cutting means
3.136
traction drive
means (system) used to transmit power from the power source to the ground drives means
3.137
working area
any defined area in which the machine can function automatically
3.138
switched circuit
circuit that is a low-power circuit when the power switch is in the “off” position
Note 1 to entry: The requirements for a low-power circuit are given in 19.11.1.
3.139
power switch
device that electrically activates the cutting means and/or traction drive of the machine in
the “on” position and deactivates the same function of the machine in its “off” position
Note 1 to entry: The device is comprised of all primary and ancillary components (e.g. tactile switch, relays, load
switches) of the electrical control circuit that activates the cutting means and/or traction drive of the machine.
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.1 Addition:
Where an electronic speed control device can be adjusted, it is set for the highest speed.
5.2 Modification:
A new sample shall be used for each of the tests of Clause 21. However, at the
manufacturer’s discretion, fewer samples may be used.
Addition:
The cumulative stress resulting from successive tests on the battery is to be avoided.
If several tests are conducted on a single sample, then the results shall not be affected by
previous tests.
5.8.1 Replacement:
Unless otherwise specified, a fully charged battery shall be used for each test. Where for
consecutive tests the same battery is specified, there shall be a minimum of 1 min rest time
between tests.
© IEC 2020
5.17 Replacement:
Machines and peripherals powered by rechargeable batteries are evaluated to the additional
requirements in Annex KK.
Peripherals powered by batteries that are non-rechargeable are tested in accordance with
Annex S.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
This subclause is not applicable for machines and non-mains-powered peripherals.
NOTE 101 Machines and non-mains-powered peripherals covered by this standard are limi
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