Safety of household and similar appliances - Particular requirements for mains operated shredders and chippers

EN 50434 specifies safety requirements and their verification for the design and construction of hand fed, shredders/chippers with integral electric motor, not exceeding 250 V single phase, with or without vacuum assisted collection which are designed to reduce organic material to smaller pieces and are used in a stationary position by an operator standing on the ground. This standard applies to shredders/chippers with feed intake openings or segments, in this standard referred to as feed safety openings that in total will fit into a square of 250 mm x 250 mm. In this European Standard shredders and chippers are referred to collectively as machine(s). This European Standard does not cover requirements for - machines powered by combustion engines; NOTE 1 Combustion engine driven machines are covered by EN 13683. - machines driven by an external power source or by battery power; - machines with powered discharge intended to broadcast material or load vehicles; - machines with mechanically powered feed intake or attachments; - wood chippers for agricultural, lawn and park and forestry use; - machines powered from a 3 phase supply. This European Standard deals with all significant hazards presented by shredders/chippers when they are used as intended and under conditions of misuse which are reasonably foreseeable. EMC and environmental aspects, except noise, have not been considered in this European Standard. This European Standard is not applicable to machines which are manufactured before the date of publication of this document by CENELEC.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Besondere Anforderungen für netzbetriebene Schredder, Häcksler und Zerkleinerer

Sécurité des appareils électrodomestiques et analogues - Règles particulières pour les broyeurs et déchiqueteurs fonctionnant sur le réseau

Varnost električnih gospodinjskih in podobnih aparatov - Posebne zahteve za omrežno napajane drobilnike in sekalnike

Standard EN 50434 določa varnostne zahteve in njihovo preverjanje za načrtovanje ter konstrukcijo drobilnikov/sekalnikov z ročnim podajanjem in z vgrajenim električnim motorjem, katerih nazivna napetost ne presega 250 V pri eni fazi, z zbiranjem z vakuumom ali brez njega, ki so zasnovani za zmanjšanje organskih materialov na manjše koščke in se uporabljajo v stacionarnem položaju, z operaterjem, ki stoji na tleh. Ta standard velja za drobilnike/sekalnike s segmenti ali odprtinami za polnjenje, ki so v tem standardu poimenovane varnostne odprtine za polnjenje, ki skupaj ustrezajo kvadratu 250 mm x250 mm. V tem evropskem standardu se drobilnikom in sekalnikom skupaj reče stroji. Ta evropski standard ne obravnava zahtev za – stroje, ki jih napajajo motorji z zgorevanjem. OPOMBA 1: Stroji z motorji z zgorevanjem so obravnavani v standardu EN 13683; – stroje, ki jih poganja zunanji vir napajanja ali baterija; – stroje z motornim praznjenjem, ki so namenjeni raztresu materiala ali tovornim vozilom; – stroje z mehansko gnanim polnjenjem ali pritrditvami; – sekalnike lesa za uporabo v kmetijstvu, za trate, parke in gozdove; – stroje, ki se napajajo prek trifaznega napajanja. Ta evropski standard opisuje vsa večja tveganja, ki jih predstavljajo drobilniki/sekalniki, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji razumno predvidene nepravilne uporabe. Elektromagnetna združljivost in okoljski vidiki z izjemo hrupa niso obravnavani v tem evropskem standardu. Ta evropski standard se ne uporablja za stroje, izdelane pred datumom, ko je CENELEC objavil ta dokument.

General Information

Status
Published
Publication Date
22-Mar-2015
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Feb-2015
Due Date
03-May-2015
Completion Date
23-Mar-2015

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SLOVENSKI STANDARD
SIST EN 50434:2015
01-april-2015
9DUQRVWHOHNWULþQLKJRVSRGLQMVNLKLQSRGREQLKDSDUDWRY3RVHEQH]DKWHYH]D
RPUHåQRQDSDMDQHGURELOQLNHLQVHNDOQLNH

Safety of household and similar appliances - Particular requirements for mains operated

shredders and chippers

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Besondere

Anforderungen für netzbetriebene Schredder, Häcksler und Zerkleinerer

Sécurité des appareils électrodomestiques et analogues - Règles particulières pour les

broyeurs et déchiqueteurs fonctionnant sur le réseau
Ta slovenski standard je istoveten z: EN 50434:2014
ICS:
65.060.70 Vrtnarska oprema Horticultural equipment
SIST EN 50434:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50434:2015
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SIST EN 50434:2015
EUROPEAN STANDARD EN 50434
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 65.060.70
English Version
Safety of household and similar appliances - Particular
requirements for mains operated shredders and chippers

Sécurité des appareils électrodomestiques et analogues - Sicherheit elektrischer Geräte für den Hausgebrauch und

Règles particulières pour les broyeurs et déchiqueteurs ähnliche Zwecke - Besondere Anforderungen für

fonctionnant sur le réseau netzbetriebene Schredder, Häcksler und Zerkleinerer

This European Standard was approved by CENELEC on 2014-03-31. 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 50434:2014 E
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SIST EN 50434:2015
EN 50434:2014 - 2 -
Contents

Introduction ............................................................................................................................................. 6

1 Scope ............................................................................................................................................. 7

2 Normative references................................................................................................................... 7

3 Terms and Definitions.................................................................................................................. 8

4 General requirements ................................................................................................................11

5 General conditions for the tests ...............................................................................................11

6 Classification ..............................................................................................................................11

7 Marking and instructions ..........................................................................................................11

8 Protection against access to live parts....................................................................................14

9 Starting of motor-operated appliances ....................................................................................14

10 Power input and current ............................................................................................................15

11 Heating ........................................................................................................................................15

12 Void ..............................................................................................................................................15

13 Leakage current and electric strength at operating temperature .........................................15

14 Transient overvoltages ..............................................................................................................15

15 Moisture resistance....................................................................................................................15

16 Leakage current and electric strength .....................................................................................16

17 Overload protection of transformers and associated circuits ..............................................16

18 Endurance ...................................................................................................................................16

19 Abnormal operations .................................................................................................................16

20 Stability and mechanical hazards .............................................................................................16

21 Mechanical strength...................................................................................................................32

22 Construction ...............................................................................................................................32

23 Internal wiring .............................................................................................................................33

24 Components ...............................................................................................................................33

25 Supply connection and external flexible cables and cords ...................................................33

26 Terminals for external conductors ...........................................................................................33

27 Provision for earthing ................................................................................................................34

28 Screws and connections ...........................................................................................................34

29 Creepage distances, clearances and distances through insulation .....................................34

30 Resistance to heat, fire and tracking .......................................................................................34

31 Resistance to rusting .................................................................................................................34

32 Radiation, toxicity and similar hazards....................................................................................34

Annexes .................................................................................................................................................35

Annex AA (normative) Safety signs ....................................................................................................35

Annex BB (informative) Methods of combining round, square and slot shapes ≤ 50 mm

complying with safety distance ≥ 20 mm ...........................................................................................39

Annex CC (normative) Test enclosure ................................................................................................42

Annex DD (normative) Target panels - Specification for corrugated fibreboard ...........................45

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SIST EN 50434:2015
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Annex EE (informative) Safety instructions for shredders/chippers ...............................................47

Annex FF (normative) Noise test code – Engineering method (Grade 2) .......................................50

Annex GG (informative) Example of a material and construction fulfilling the requirements

for an artificial surface .........................................................................................................................58

Annex ZZ (informative) Coverage of Essential Requirements of EU Directives ............................60

Bibliography ..........................................................................................................................................60

Figures

Figure 1 - Examples of typical shredders/chippers ......................................................................... 10

Figure 2 - Distance from feed safety opening to shredding means ............................................... 22

Figure 3 - Examples of discharge chute distance requirements .................................................... 25

Figure 4 - Thrown object test fixture - General layout ..................................................................... 28

Figure 5 - Kraft paper target panel placement .................................................................................. 29

Figure AA.1 - "Read operator's manual" ........................................................................................... 35

Figure AA.2 - "Danger - Rotating blades. Keep hands and feet out of openings while machine is

running" ................................................................................................................................................ 35

Figure AA.3 - "Keep bystanders away" ............................................................................................. 36

Figure AA.4 - "Wear hearing protection" .......................................................................................... 36

Figure AA.5 - "Wear eye protection" ................................................................................................. 36

Figure AA.6 - "Wear eye and hearing protection" ............................................................................ 36

Figure AA.7 - "Switch off and remove plug from mains before adjusting, cleaning or if the cord

is entangled or damaged" .................................................................................................................. 37

Figure AA.8 - "Wait until all machine components have completely stopped before touching

them" .................................................................................................................................................... 37

Figure AA.9 - "Do not use as a step" ................................................................................................. 38

Figures BB.1 - BB.3 - Opening sizes ≤ 45 mm .................................................................................. 39

Figures BB.4 - BB.7 - Opening sizes > 45 ≤ 50 mm .......................................................................... 40

Figure BB.8 - Opening sizes ≤ 50 mm, pinch point ≤ 26 mm .......................................................... 41

Figure CC.1 - Test enclosure walls and base (not to scale) ............................................................ 43

Figure CC.2 - Nail plan of test fixture base if 500 mm squares are used ...................................... 44

Figure DD.1 - Test fixture for corrugated fibreboard penetration test ........................................... 46

Figure FF.1 - Microphone positions on the hemisphere (see Table FF.1) ..................................... 52

Figure FF.2 - Microphone position for measurement of emission sound pressure level and

location of machine with respect to the microphone co-ordinate system .................................... 54

Figure GG.1 - Sketch of the measurement surface covered with an artificial surface (not to

scale) ....................................................................................................................................................589

Tables

Table 1 - Safety distances of shredding means from feed safety openings ................................. 16

Table FF.1 - Co-ordinates of microphone positions ........................................................................ 52

Table FF.2 - Absorption coefficients ................................................................................................. 54

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SIST EN 50434:2015
EN 50434:2014 - 4 -
Foreword

This document (EN 50434:2014) has been prepared by WG 5, "Gardening appliances", of the

Technical Committee CENELEC TC 116, "Safety of motor-operated electric tools".
The following dates are fixed:
• latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2015-03-31
national standard or by endorsement
• latest date by which the national standards conflicting
(dow) 2017-03-31
with the EN have to be withdrawn
EN 50434:2014 includes the following significant technical changes:
– alignment to the European Machinery Directive 2006/42/EC;
– alignment to EN 60335-1:2012.

This European Standard 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 European Standard supplements or modifies the corresponding clauses in Part 1, so as to

convert that publication into the European Standard “Safety requirements for shredders/chippers”.

Where a particular subclause of Part 1 is not mentioned in this standard, 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 European Standard 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 12100:2010.

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.
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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SIST EN 50434:2015
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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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SIST EN 50434:2015
EN 50434:2014 - 6 -
1 Scope
Replacement:

This European Standard specifies safety requirements and their verification for the design and

construction of hand fed, shredders/chippers with integral electric motor, not exceeding 250 V single

phase, with or without vacuum assisted collection which are designed to reduce organic material to

smaller pieces and are used in a stationary position by an operator standing on the ground. This

standard applies to shredders/chippers with feed intake openings or segments, in this standard

referred to as feed safety openings that in total will fit into a square of 250 mm x 250 mm.

NOTE For the requirements for the measurement of the square of 250 mm x 250 mm are given in clause 20.101.1 of this

standard.

In this European Standard shredders and chippers are referred to collectively as machine(s).

This European Standard does not cover requirements for
– machines powered by combustion engines;
NOTE 1 Combustion engine driven machines are covered by EN 13683.
– machines driven by an external power source or by battery power;

– machines with powered discharge intended to broadcast material or load vehicles;

– machines with mechanically powered feed intake or attachments;
– wood chippers for agricultural, lawn and park and forestry use;
NOTE 2 Wood chippers are covered by EN 13525.
– machines powered from a 3 phase supply.

This European Standard deals with all significant hazards presented by shredders/chippers when

they are used as intended and under conditions of misuse which are reasonably foreseeable.

EMC and environmental aspects, except noise, have not been considered in this European Standard.

This European Standard is not applicable to machines which are manufactured before the date of

publication of this document by CENELEC.
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:

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 methods for an essentially free field over a

reflecting plane (ISO 3744:2010)
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SIST EN 50434:2015
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EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery

and equipment (ISO 4871:1996)

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 12100:2010, Safety of machinery — General principles for design — Risk assessment and

risk reduction (ISO 12100:2010)

EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1:

General principles for design (ISO 13849-1:2006)

EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached

by upper and lower limbs (ISO 13857:2008)
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.1.9 Replacement:
3.1.9
normal operation

any use of the machine which is specified by the manufacturer, and which is consistent with such

activities as reducing organic material, starting, and stopping
Addition:
3.101
discharge chute

extension of the opening through which the shredded or chipped material is discharged

3.102
discharge zone
any space wherein material is intended to be ejected from the machine
3.103
feed safety opening

opening through which material is passed located at the relevant safety distance from the shredding

means. This may be the same as the feed intake opening in Clause 3.104 or at some point between

the feed intake opening and the shredding means
3.104
feed intake opening

opening through which material is inserted to be fed to the cutting mechanism. A feed intake opening

can become feed safety opening(s) if the relevant safety distance from the shredding means is met

3.105
normal use

normal operation, plus routine maintenance, servicing, cleaning, transporting, attaching or removing

accessories, and making adjustments as determined by the manufacturer's instructions

3.106
material discharge deflector

fixed or movable component designed to direct the flow of processed material discharging from the

machine
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EN 50434:2014 - 8 -
3.107
maximum operating speed
highest power source speed obtainable with the shredding means engaged
3.108
operator presence control

control designed so that it will automatically interrupt power to a drive when the operator’s actuating

force is removed
3.109
power source
motor which provides linear or rotational movement
3.110
screen (grid)

perforated piece or bar(s) located between the shredding means and discharge chute or opening of

the machine to assist in reducing organic materials to smaller pieces
3.111
shredder/chipper

machine designed for use in a stationary position having a shredding means for the purpose of

reducing organic materials to smaller pieces. See Figures 1a) and 1b)
3.112
shredding means

mechanism consisting of one or more cutting means with or without a screen (grid), designed to

reduce the size of organic material to smaller pieces
Key
1 feed intake opening
2 discharge chute
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SIST EN 50434:2015
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Key
1 feed intake opening
2 discharge chute
Figure 1 - Examples of typical shredders/chippers
4 General requirements
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:

The machines shall be one of the following classes with respect to protection against electric shock:

class I or class II.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Machines shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows:
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EN 50434:2014 - 10 -
7.1 Addition:
Add the following new 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 provided

this code is explained by giving the explicit designation such as “shredders” or “chipper” 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.
- serial number, if any;
- 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.

- machines operated continuously shall be marked with rated power in Watts or rated current in

Amperes;

- machines rated intermittently according to 11.5 shall be marked with rated power in Watts or

rated current in Amperes and the duty cycle in parenthesis (P40). This shall be explained in the

instruction manual;
NOTE 4 As an example 1 800 W (P40).

- guards designed to be opened or removed shall have a sign warning of the relevant hazard

visible on the machine both when the guard is closed and when it is opened or removed;

- controls which may give rise to a hazard (e.g. operator presence control and/or on/off switch)

when operated shall be marked or so placed as to indicate clearly which part of the machine they

control;

- where replaceable during normal use, the shredding means shall be marked to identify the part

number(s) and the manufacturer, importer or supplier;

- when a guard or container is so positioned or shaped that it could be misused as a step, there

shall be a warning marking “Do not us as a step” or an equivalent safety sign, an example is

given in Figure AA.9.

Marking giving warning information shall be easily legible and located as close as practicable to the

relevant hazard.

The substance of the following warnings shall be placed in a prominent position on the machine. If a

pictogram is used it shall be that shown in Annex AA. It shall be in contrasting colours to the base

material. If it is embossed, stamped or cast colours are not required. Markings or symbols giving

cautionary information shall be located close to the hazard:

– DANGER - Rotating blades. Keep hands and feet out of openings while machine is running;

– Read the user instructions;
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– Keep bystanders away;

– WARNING Switch off and remove plug from mains before adjusting, cleaning or if the cord is

damaged.
As appropriate to the machine design:
– Wear eye and/or ear protection;

– Wait until all machine components have completely stopped before touching them.

Compliance shall be checked by inspection.
7.9 This clause of Part 1 is 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, Clause 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 spare part shall be clearly identified, e.g. by the

use of a part number or other means;
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 and keeping the discharge chute clear of

processed material for use, preparation, maintenance and storage of the machine;

l) an advice to not overreach and to keep the balance at all times, to always be sure of the footing

on slopes and to walk, never run;
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EN 50434:2014 - 12 -

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

Clause 25.7);

o) if a collecting facility is provided with the machine, instructions for when and how to attach and

detach the collection device to and from the machine;

p) information about the residual risks that remain despite the inherent safe design measures,

safeguarding and complementary protective measures adopted;

q) instructions to always wear substantial footwear and long trousers while operating the machine;

r) instructions to disconnect the supply (e.g. remove the plug from the main
...

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