SIST EN 50636-2-94:2015

Household and similar electrical appliances - Safety -- Part 2-94: Particular requirements for scissors type grass shears

This clause of Part 1 is replaced by the following.
This European Standard specifies safety requirements and their verification for the design and
construction of electric powered hand-held scissors type grass shears with a maximum cutting
width of 200 mm designed primarily for cutting grass, their rated voltage being not more than 250 V
for a.c. or 75 V d.c.
In this European Standard the term “machine” means “electric powered scissors type grass shear”.
This European Standard does not apply to hedge trimmers as covered by EN 60745–2–15.
Requirements for chargers are covered by EN 60335-2-29:2004.
Requirements for batteries are covered by EN 62133:2003.
EMC and environmental aspects except for noise have not been considered in this European
Standard.
This European Standard deals with all the significant hazards presented by hand-held scissors type
grass shears when they are used as intended and under conditions of misuse which are reasonably
foreseeable.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-94: Besondere Anforderungen für Grasscheren mit Scherblättern

Appareils électrodomestiques et analogues - Sécurité -- Partie 2-94: Règles particulières pour les coupe-gazon de type ciseaux

Gospodinjski in podobni električni aparati - Varnost - 2-94. del: Posebne zahteve za škarje za travo

To točko 1. dela nadomešča naslednje besedilo.
Ta evropski standard določa varnostne zahteve in njihovo preverjanje za načrtovanje ter konstrukcijo električno gnanih prenosnih škarij za travo z največjo širino rezanja 200 mm, ki so zasnovane zlasti za rezanje trave, pri čemer njihova nazivna napetost ne sme presegati 250 V izmeničnega toka ali 75 V enosmernega toka.
V tem evropskem standardu izraz »stroj« pomeni »električno gnane prenosne škarje za travo«.
Ta evropski standard se ne uporablja za škarje za živo mejo iz standarda EN 60745-2-15.
Zahteve za polnilnike so obravnavane v standardu EN 60335-2-29:2004.
Zahteve za baterije so obravnavane v standardu EN 62133:2003.
Elektromagnetna združljivost in okoljski vidiki z izjemo hrupa niso obravnavani v tem evropskem standardu.
Ta evropski standard obravnava vsa večja tveganja, ki jih predstavljajo prenosne škarje
za travo, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji razumno predvidene nepravilne
uporabe.

General Information

• Status: Published
• Publication Date: 15-Mar-2015
• ICS: 13.120 - Domestic safety
• ICS: 65.060.70 - Horticultural equipment
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 26-Feb-2015
• Due Date: 03-May-2015
• Completion Date: 16-Mar-2015
• 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)
• Directive: 98/37/EC - Machinery
• Ref Project: EN 50636-2-94:2014 - Household and similar electrical appliances - Safety - Part 2-94: Particular requirements for scissors type grass shears

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50636-2-94:2015
01-april-2015
*RVSRGLQMVNLLQSRGREQLHOHNWULþQLDSDUDWL9DUQRVWGHO3RVHEQH]DKWHYH
]DãNDUMH]DWUDYR
Household and similar electrical appliances - Safety -- Part 2-94: Particular requirements
for scissors type grass shears
Appareils électrodomestiques et analogues - Sécurité -- Partie 2-94: Règles particulières
pour les coupe-gazon de type ciseaux
Ta slovenski standard je istoveten z: EN 50636-2-94:2014
ICS:
13.120 Varnost na domu Domestic safety
65.060.70 Vrtnarska oprema Horticultural equipment
SIST EN 50636-2-94:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50636-2-94:2015

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SIST EN 50636-2-94:2015


EUROPEAN STANDARD EN 50636-2-94

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2014
ICS 65.060.70

English Version
Household and similar electrical appliances - Safety - Part 2-94:
Particular requirements for scissors type grass shears

Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-94: Règles particulières pour les coupe-gazon de ähnliche Zwecke - Teil 2-94: Besondere Anforderungen für
type ciseaux Grasscheren mit Scherblättern

This European Standard was approved by CENELEC on 2013-09-30. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50636-2-94:2014 E

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EN 50636-2-94:2014 – 2 –
Contents
Foreword.4
Introduction .6
1 Scope .7
2 Normative references .7
3 Terms and definitions .8
4 General requirement .9
5 General conditions for the tests .9
6 Classification .9
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 13
10 Power input and current . 13
11 Heating . 13
12 Void . 13
13 Leakage current and electric strength at operating temperature . 13
14 Transient overvoltages . 13
15 Moisture resistance . 13
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 14
19 Abnormal operation . 14
20 Stability and mechanical hazards . 14
21 Mechanical strength . 16
22 Construction . 17
23 Internal wiring . 19
24 Components . 19
25 Supply connection and external flexible cords . 19
26 Terminals for external conductors . 20
27 Provision for earthing . 20
28 Screws and connections . 20
29 Clearances, creepage distances and solid insulation . 20
30 Resistance to heat and fire . 21
31 Resistance to rusting . 21
32 Radiation, toxicity and similar hazards . 21
Annexes . 28
Annex B (normative) Appliances powered by rechargeable batteries . 28
Annex AA (normative) Safety signs and symbols which may be used on scissors type grass
shears . 30
Annex BB (normative) Vibration . 32
Annex CC (normative) Noise test code engineering method (grade 2) . 36

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Annex DD (informative) Example of a material and construction fulfilling the requirements for
an artificial surface (see CC.4.1) . 42
Annex EE (informative) Safety instructions . 44
Annex FF (normative) Test enclosure – Base . 46
Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 49
Bibliography . 50
Figures
Figure 101 – Parts of cutting means (see 3.103, 3.104) – Cutting width (see 3.101) . 22
Figure 102 – Examples of grass shears (see 3.102) . 22
Figure 103 – Cutter blade extension (see 20.101) . 23
Figure 104 – Examples of compliance/non-compliance and measurement method for hand
protection (see 20.102). 24
Figure 105 – Example showing the layout for the strength test and a possible orientation for the
machine (see 21.102) . 25
Figure 106 – Cutting means strength test (see 21.103) . 26
Figure 107 – Device for impact test (see 22.35) . 27
Figure AA.1 – “Read operator’s manual” . 30
Figure AA.2 – “Do not expose to rain” . 30
Figure AA.3 – “Warning: cutting means continues to run after the motor is switched off” . 31
Figure AA.4 – Mains operated machines – “Disconnect the mains plug if the cord becomes
damaged or entangled” . 31
Figure AA.5 – “Keep bystanders away” . 31
Figure BB.1 – Examples of transducer location/orientation (handle) . 35
Figure CC.1 – Microphone positions on the hemisphere (see Table CC.1) . 37
Figure DD.1 – Sketch of the measurement surface covered with an artificial surface (not to scale). 43
Figure FF.1 – Nail plan of base . 47
Figure FF.2 – Base detail . 48
Tables
Table CC.1 – Coordinates of microphone-positions . 38
Table CC.2 – Absorption coefficients . 39

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SIST EN 50636-2-94:2015
EN 50636-2-94:2014 – 4 –
Foreword
This document (EN 50636-2-94:2014) has been prepared by CLC/TC 116 "Safety of motor-operated
electric tools".



The following dates are fixed:

(dop) 2014-12-20
• latest date by which this document has to be
implemented
at national level by publication of an identical
national standard or by endorsement
(dow) 2016-09-30
• latest date by which the national standards conflicting
with this document have to be withdrawn

EN 50636-2-94:2014 includes the following significant technical changes:
– alignment to the European Machinery Directive 2006/42/EC;
– alignment to EN 60335-1:2012.
This document is to be used in conjunction with EN 60335-1:2012 “Household and similar electrical
appliances - Safety – Part 1: General requirements”.
When “Part 1” is mentioned in this standard, it refers to EN 60335-1:2012.
This document supplements or modifies the corresponding clauses in Part 1, so as to convert that
publication into the European Standard “Safety requirements for scissors type grass shears”.
Where a particular subclause of Part 1 is not mentioned in this document, 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.
Compliance with the relevant clauses of Part 1 together with this Part 2 provides one means of
conforming to the specified essential health and safety requirements of the Directive.
This European Standard follows the overall requirements of EN ISO 12100.
Other harmonised standards referred to in this European Standard are listed in Annex ZC of Part 1
and this document. The annex lists the valid edition of those documents at the time of issue of this EN.
All references are however to be understood as references to the latest edition.
The following numbering system is used:
– subclauses that are numbered starting from 101 are additional to those in Part 1;
– additional annexes are lettered AA, BB, etc.;
NOTE In this European Standard the following print types are used:
- requirements proper: in roman type;
- test specifications: in italic type;
- explanatory matter: in smaller roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associated
noun are also in bold.

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Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive.
For the relationship with EU Directive 2006/42/EC, see informative Annex ZZ, which is an integral part
of this document.
Warning: Other requirements arising from other EU Directives can be applicable to the products
falling within the scope of this European Standard.

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EN 50636-2-94:2014 – 6 –
Introduction
This document is a type C standard as stated in EN ISO 12100:2010.
The machinery concerned and the extent to which hazards, hazardous situations and events are
covered is as indicated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B
standards, the provisions of this type C standard take precedence over the other standards, for
machines which have been built and designed to the provisions of this type C standard.

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1 Scope
This clause of Part 1 is replaced by the following.
This European Standard specifies safety requirements and their verification for the design and
construction of electric powered hand-held scissors type grass shears with a maximum cutting
width of 200 mm designed primarily for cutting grass, their rated voltage being not more than 250 V
for a.c. or 75 V d.c.
In this European Standard the term “machine” means “electric powered scissors type grass shear”.
This European Standard does not apply to hedge trimmers as covered by EN 60745–2–15.
Requirements for chargers are covered by EN 60335-2-29:2004.
Requirements for batteries are covered by EN 62133:2003.
EMC and environmental aspects except for noise have not been considered in this European
Standard.
This European Standard deals with all the significant hazards presented by hand-held scissors type
grass shears when they are used as intended and under conditions of misuse which are reasonably
foreseeable.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
1)
EN 12449:1999 , Copper and copper alloys – Seamless, round tubes for general purposes
EN 28662-1:1992, Hand-held portable power tools – Measurement of vibrations at the handle -–
Part 1: General (ISO 8662-1:1988)
EN 60320 (all parts), Appliance couplers for household and similar general purposes
(IEC 60320 (all parts))
EN 60335-1:2012, Household and similar electrical appliances – Safety – Part 1: General
requirements (IEC 60335-1:2010, mod.)
EN 62233:2008, Measurement methods for electromagnetic fields of household appliances and similar
apparatus with regard to human exposure (IEC 62233:2005, mod.)
EN ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
(ISO 354:2003)
EN ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
noise sources using sound pressure – Engineering method for an essentially free field over a
reflecting plane (ISO 3744:2010)
EN ISO 4871:2009, Acoustics – Declaration and verification of noise emission values of machinery
and equipment (ISO 4871:1996)

1)
Superseded by EN 12449:2012.

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EN 50636-2-94:2014 – 8 –
EN 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 11201:2010)
EN ISO 11688-1:2009, Acoustics – Recommended practice for the design of low-noise machinery and
equipment – Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery – General principles for design – Risk assessment and risk
reduction (ISO 12100:2010)
ISO 3767-1:1998, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Symbols for operator controls and other displays – Part 1: Common symbols
ISO 3767-3:1995, 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 7000, Graphical symbols for use on equipment – Registered symbols
EN ISO 7010, Graphical symbols - Safety colours and safety signs - Registered safety signs (ISO 7010)
ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden
equipment – Safety signs and hazard pictorials – General principles
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9 Replacement:
3.1.9
normal operation
operation of the machine under the following conditions: the machine is operated at rated voltage
with the load necessary to attain rated power input
3.5.2 Replacement:
3.5.2
hand-held machine
portable machine intended to be held in the hand during normal use, including machines which will not
maintain their operating position unless supported, possibly with an extension shaft and/or assisted
by wheel(s), skid(s) or similar
Addition:
3.101
width of cut
the effective cutting width of the cutting device measured from the inside edge of the first blade tooth
or shear plate tooth to the inside edge of the last blade tooth or shear plate tooth, whichever is the
greater (see Figure 101)
3.102
scissors type grass shears
grass-cutting machine with two blades where the one cutter blade reciprocates along a straight or
curved path (see Figure 102)
3.103
blade tooth
part of the cutter blade which is sharpened to perform the shearing action (see Figure 101)

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3.104
cutter blade
part of the cutting means having blade teeth which cut by shearing action against the teeth of the
shear plate (see Figure 101)
3.105
cutting means
cutter blade and shear plate together with any supporting part(s), which together perform the cutting
action
3.106
cutting means control
device, activated by the operator’s hand or finger, for controlling the operation of the cutting means
3.107
no load
operation of the machine at rated voltage with the cutting means attached
3.108
extension shaft
optional shaft which is designed to be fitted to a hand-held machine to enable the operator to cut
grass while in a standing position
3.109
power switch
switch that controls the primary operating means 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.
5.2 Addition:
A new machine shall be used for each of the tests of Clause 21.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Mains operated machines shall be of one of the following classes with respect to protection against
electric shock:
− class II or class III.
Battery powered machines incorporating battery chargers shall be class II. Other battery-powered
machines shall be class III.
Compliance is checked by inspection and by the relevant tests.

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EN 50636-2-94:2014 – 10 –
6.2 Addition:
Class II machines shall be at least IPX4. Class III machines shall be at least IPX1.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Add the following indents:
− business name and full address of the manufacturer and, where applicable his authorized
representative;
− year of construction;
− designation of the machine,
designation of machine may be achieved by a combination of letters and/or numbers providing
that this code is explained by giving the explicit designation such as “scissors type grass shear”
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 machine;
NOTE 2 The term “designation of series or type” is also known as model number.
− 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.
Controls which may give rise to a hazard (e.g. cutting means control in accordance with 22.40) when
operated shall be marked or so placed as to indicate clearly which part of the machine they control.
Add the following new paragraphs:
The following warnings shall be located in easily visible positions, indicating:
− Warning: Read instruction manual.
− Warning: Do not expose to rain.
− Warning: Cutting means continues to run after the motor is switched off.
− Warning: Keep bystanders away.
Mains-operated machines shall also be marked with the substance of the following:
− Disconnect the mains plug if the cord becomes damaged or entangled.
Marking giving cautionary information shall be located as close as practicable to the relevant hazard.
Such marking shall either be in one of the official languages of the country in which the machine is to
be sold or the safety signs and symbols according to Annex AA shall be used. Symbols according to
ISO 3767-1, ISO 3767-3 and/or ISO 11684 may also be used, as appropriate. Colours shall be in
accordance with ISO 3767-1 and ISO 3767-3 and/or ISO 11684 as appropriate unless the symbols are

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cast, embossed or stamped when colours are not required. If symbols and/or safety signs are used,
their significance shall be described in the instruction manual.
7.9 Not applicable.
7.12 Replacement:
An instruction manual shall be supplied with the machine, giving operating, servicing, maintenance
and safety instructions that comply as appropriate with EN ISO 12100:2010, 6.4. The words ‘Original
instructions’ shall appear on the language version(s) verified by the manufacturer or his authorised
representative. Where no ‘Original instructions’ exist in the official language(s) of the country where
the machine is to be used, a translation into that/those language(s) shall be provided by the
manufacturer or his authorised representative or by the person bringing the machine into the language
area in question. The translations shall bear the words ‘Translation of the original instructions’, and
they shall be accompanied by a copy of the ‘Original instructions’.

This instruction manual shall include
a) a repeat of those warnings required to be marked on the machine together with further
explanation, where appropriate. Where safety signs are used in the marking on the machine, their
function shall be explained,
b) a warning to never allow children, persons with reduced physical, sensory or mental capabilities
or lack of experience and knowledge or people unfamiliar with these instructions to use the
machine, local regulations may restrict the age of the operator,
c) a warning to never operate the machine while people, especially children, or pets are nearby,
d) a general description of the machine, the intended use, instructions for the proper use of the
machine including advice on what the machine should be used for, how to use it for the intended
purpose(s) and any reasonably foreseeable misuse thereof,
e) warnings concerning ways - that experience has shown might occur - in which the machinery shall
not be used,
f) instructions for the proper assembly and disassembly of the machine for use, if the machine is not
supplied in a completely assembled form,
g) instructions for proper adjustment and any necessary user maintenance of the machine, including
timescales and a warning of the danger of moving hazardous parts,
h) instructions for the recommended replacement or repair of, or service attention to critical
components. Where parts are consumable, the part number of the spare part shall be specified,
i) instructions on the operation of all controls,
j) information how to start the machine safely,
k) instructions for the operating position and the correct and safe operation of the machine such as
moving, safe positioning, handling, clearing blockages for use, preparation, maintenance and
storage of the machine,
l) an advice not to overreach and to keep balance at all times, to always be sure of footing on slopes
and to walk, never run,
m) a warning not to touch moving hazardous parts before the machine is disconnected from the
mains and the moving hazardous parts have come to a complete stop,
n) an advice on the use, length and type of extension cords to be used (not lighter than required by
25.7),
o) information about the residual risks that remain despite the inherent safe design measures,
safeguarding and complementary protective measures adopted,
p) instructions to always wear substantial footwear and long trousers while operating the machine,
q) instructions to disconnect the supply (e.g. remove the plug from the mains or remove the disabling
device)
- whenever the machine is left by the user,

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EN 50636-2-94:2014 – 12 –
- before clearing a blockage,
- before checking, cleaning or working on the machine,
- after striking a foreign object to inspect the machine for damage,
- if the machine starts to vibrate abnormally, for immediately check,
r) instructions when, where and how to inspect the machine, the supply and extension cord for signs
of damage or ageing and, if permitted, how to make repairs,
s) a warning never to operate the machine with defective guards or shields, or without safety
devices, or if the cord is damaged or worn,
t) an advice not to connect a damaged cord to the supply or touch a damaged cord before it is
disconnected from the supply for the reason that damaged cords can lead to contact with live
parts,
u) an advice to keep extension cords away from moving hazardous parts to avoid damages to the
cords which can lead to contact with live parts,
v) the operating method to be followed in the event of accident or breakdown,
w) instructions how to disconnect the machine from the
...