EN 50050-3:2013

Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held spraying equipment for ignitable flock

1.1 This European Standard specifies the requirements for hand-held or hand-operated electrostatic spraying equipment for ignitable flock within a temperature range from 5 °C to 40 °C to be used in explosive atmospheres generated by their own spray cloud. This European Standard deals with all electrical hazards significant for the electrostatic spraying of flock, which could also contain small quantities of added metal particles, if the work is carried out under conditions recommended by the manufacturer. In particular, this includes ignition hazards resulting from the generated explosive atmosphere. This European Standard specifies the design-related and test requirements for electrostatic spraying equipment of type A-F and type B-F according to Table 1 of EN 50223:2010. 1.2 Electrostatic applicators are considered to be equipment of group II, category 3D for use in potentially explosive areas of zone 22. All other parts of hand-held electrostatic spraying equipment are considered to be equipment of category 3D if they are installed or used in potentially explosive areas of zone 22. NOTE 1 Solvent vapours which could be evaporated by workpieces coated with adhesives do not lead to a zone 2 in the flocking area. 1.3 In addition to the requirements above, the requirements of EN 1953 applies with regard to all other significant hazards relevant for applicators (e.g. health hazards, inadequate ergonomics). 1.4 This European Standard does not apply to  zone classification of the areas in and around spray booths [see EN 50223],  zone classification of other areas with potentially explosive atmosphere [see EN 60079-10-2],  selection, erection and application of other electrical and non-electrical equipment in areas with explosion hazard [see EN 60079 14 and EN 50223],  cleaning of spraying areas, see instruction manual of the spraying equipment,  fire prevention and protection, for instance fire hazards due to other sources [see EN 50223],  explosion protection systems [see EN 50223],  dust hazards [see EN 12981]. NOTE 2 Noise is not considered to be a significant hazard for hand-held spraying equipment for ignitable flock.

Elektrostatische Handsprüheinrichtungen - Sicherheitsanforderungen - Teil 3: Handsprüheinrichtungen für entzündbaren Flock

Equipement manuel de projection électrostatique - Exigences de sécurité - Partie 3: Equipement manuel de projection de floque inflammable

1.1 La présente Norme Européenne spécifie les exigences relatives aux matériels portatifs de projection électrostatique ou aux matériels actionnés manuellement pour flock inflammable dans une plage de températures de 5 °C à 40 °C utilisées en atmosphères explosives, celles-ci étant générées par leur propre nuage de projection. La présente Norme Européenne traite de tous les dangers électriques importants concernant la projection électrostatique de flock, susceptible de contenir également de faibles quantités de particules métalliques additionnelles, si les travaux sont menés à bien dans des conditions recommandées par le fabricant. En particulier, ceci inclut les risques d'inflammation résultant de l'atmosphère explosive ainsi produite. La présente Norme Européenne spécifie les exigences relatives à la conception et aux essais des matériels de projection électrostatique de type A-F et de type B-F, conformément au Tableau 1 de la EN 50223:2010. 1.2 Les applicateurs électrostatiques sont considérés comme des matériels de groupe II, catégorie 3D pour une utilisation dans des emplacements potentiellement explosifs de la zone 22. Toutes les autres parties des matériels manuels de projection électrostatique sont considérées comme des matériels de catégorie 3D, si elles sont installées ou utilisées dans des emplacements potentiellement explosifs de la zone 22. NOTE 1 Les vapeurs de solvants susceptibles d'être évaporées par la pièce à traiter revêtue d'adhésifs ne conduisent pas à une zone 2 dans la zone de floculation. 1.3 En plus des exigences ci-dessus, les exigences de la EN 1953 s'appliquent pour ce qui concerne tous les autres phénomènes dangereux importants appropriés aux applicateurs (par exemple, risques pour la santé, inadéquation ergonomique). 1.4 La présente Norme Européenne n’est pas applicable  à la classification en zones des emplacements à l’intérieur et autour des cabines de pulvérisation [voir la EN 50223],  à la classification en zones d'autres emplacements comportant une atmosphère potentiellement explosive [voir la EN 60079-10-2],  au choix, au montage et à l'utilisation d'autres matériels électriques et non électriques dans les emplacements comportant un danger d'explosion [voir la EN 60079-14 et la EN 50223],  au nettoyage des emplacements de projection, voir le manuel d'instructions du matériel de projection,  à la prévention de l'incendie et à la protection contre l'incendie. Par exemple: les dangers d'incendie dus à d'autres sources [voir EN 50223],  aux systèmes de protection contre l'explosion [voir la EN 50223],  aux phénomènes dangereux relatifs aux poussières [voir la EN 12981]. NOTE 2 Le bruit n'est pas considéré comme un phénomène dangereux significatif pour les matériels manuels de projection pour le flock inflammable.

Oprema za ročno elektrostatično brizganje - Varnostne zahteve - 3. del: Ročna oprema za brizganje vnetljivih kosmičev

Ta evropski standard določa zahteve za ročno opremo za elektrostatično brizganje vnetljivih kosmičev v temperaturnem območju od 5 °C do 40 °C, ki se uporablja v eksplozivnih atmosferah, ki jih ustvari njihov lastni oblak prahu. Ta evropski standard zajema vse električne nevarnosti, ki se pojavijo pri elektrostatičnem brizganju kosmičev, ki lahko vsebujejo tudi manjše količine dodanih kovinskih delcev, če je delo opravljeno pod pogoji, ki jih priporoča proizvajalec. To zajema zlasti nevarnost vžiga zaradi ustvarjene eksplozivne atmosfere. Ta evropski standard določa zahteve, povezane z zasnovo in preskušanjem, za elektrostatično opremo za brizganje vrste A–F in B–F v skladu s tabelo 1 standarda EN 50223:2010. Elektrostatične naprave za nanašanje sodijo v skupino II, kategorijo 3D za uporabo v potencialno eksplozivnih okoljih cone 22. Vsi ostali deli ročne opreme za elektrostatično brizganje sodijo v kategorijo 3D, če so nameščeni in se uporabljajo v potencialno eksplozivnih območjih cone 22.

General Information

• Status: Published
• Publication Date: 07-Nov-2013
• Withdrawal Date: 13-Oct-2016
• ICS: 87.100 - Paint coating equipment
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Drafting Committee: CLC/SC 31-8 - Electrostatic painting and finishing equipment
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 29-Jul-2020
• Directive: 2014/34/EU - Directive 2014/34/EU Of The European Parliament And Of The Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• Directive: 94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: SIST EN 50050-3:2014 - Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held spraying equipment for ignitable flock

Relations

• Replaces: EN 50050:2006 - Electrical apparatus for potentially explosive atmospheres - Electrostatic hand-held spraying equipment
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2014
2SUHPD]DURþQRHOHNWURVWDWLþQREUL]JDQMH9DUQRVWQH]DKWHYHGHO5RþQD
RSUHPD]DEUL]JDQMHYQHWOMLYLKNRVPLþHY
Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held
spraying equipment for ignitable flock
Elektrostatische Handsprüheinrichtungen - Sicherheitsanforderungen - Teil 3:
Handsprüheinrichtungen für entzündbaren Flock
Equipement manuel de projection électrostatique - Exigences de sécurité - Partie 3:
Equipement manuel de projection de floque inflammable
Ta slovenski standard je istoveten z: EN 50050-3:2013
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
87.100 Oprema za nanašanje Paint coating equipment
premazov
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50050-3
NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM
ICS 87.100 Supersedes EN 50050:2006 (partially)

English version
Electrostatic hand-held spraying equipment -
Safety requirements -
Part 3: Hand-held spraying equipment for ignitable flock

Equipement manuel de projection Elektrostatische Handsprüheinrichtungen -
électrostatique - Sicherheitsanforderungen -
Exigences de sécurité - Teil 3: Handsprüheinrichtungen für
Partie 3: Equipement manuel de entzündbaren Flock
projection de floque inflammable

This European Standard was approved by CENELEC on 2013-10-14. 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.

CENELEC
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

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50050-3:2013 E
Contents
Page
Foreword . 3
0 Introduction . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements for hand-held spraying equipment for ignitable flock . 10
4.1 General requirements . 10
4.2 Requirements for the accessories . 11
5 Tests . 12
5.1 General . 12
5.2 General tests . 12
5.3 Conditioning test . 12
5.4 Tests for electrical safety . 13
5.5 Test of the maximum discharge energy and the maximum transferred charge . 14
5.6 Tests of the accessories . 14
6 Information for use . 14
6.1 General . 14
6.2 Instruction manual. 14
6.3 Marking of electrostatic hand-held spraying equipment and associated control
devices . 16
Annex A (normative) Test for ignition protection using a shunt and an oscilloscope . 19
Annex B (informative) Quality assurance systems for electrostatic spraying equipment . 20
B.1 General . 20
B.2 Electrical assembly . 20
B.3 Mechanical assembly . 21
B.4 Tests . 21
Annex ZY (informative) Significant changes between this European Standard and
EN 50050:2006 . 22
Annex ZZ (informative) Coverage of Essential Requirements of EC Directives . 23

Bibliography . 24
Tables
Table 1 — Test intervals. 16

- 3 - EN 50050-3:2013
Foreword
This document (EN 50050-3:2013) has been prepared by SC 31-8, "Electrostatic painting and finishing
equipment", of CLC/TC 31, "Electrical apparatus for potentially explosive atmospheres".

The following dates are fixed:

(dop) 2014-10-14
• latest date by which this document has to be
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2016-10-14
conflicting with this document have to
be withdrawn
In combination with EN 50050-1:2013 and EN 50050-2:2013, this document supersedes
EN 50050:2006.
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(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
0 Introduction
0.1 Process
In the process of electrostatic flock application, flock particles are transported from a reservoir to an
applicator either by gravitational forces or within an air stream. As the flock particles are passing the
applicator, they are electrostatically charged and developed by means of a high voltage of some tens
of kilovolts and ejected in the form of a cloud which is directed towards the workpiece. The flock
particles of the cloud are attracted by the earthed workpiece and enclosed from a before served
adhesive layer. They stick in this adhesive layer until the adhesive is set at room temperature or by
heating.
Flock particles not deposited on the workpiece (overspray) are removed by the exhaust ventilation
system, by brushes or other devices into the flock recovery system.
0.2 Explosion hazards
0.2.1 An explosion can occur, if
 the concentration of flock particles in air is within the explosion limits,
 contamination by adhesives (in a cured condition most of the adhesives are insulating), and
 an ignition source of appropriate energy for this explosive atmosphere
is present.
Ignition sources could be, for instance, a hot surface, a naked flame, an electric arc or a spark.
An explosion could be prevented, if at least one condition is avoided. Because it is very difficult to
exclude the possibility of ignitable discharges completely, the main focus should be the prevention of
ignitable concentrations of flock in air.
0.2.2 Deflagration of explosive atmospheres is only possible within a given range of concentration,
but not, if the concentration is above or below this range.
NOTE If an explosive cloud of flock and air is trapped into a closed room, an explosion can lead to a fatal
increase of pressure.
0.2.3 It is important that deposits of flock are not allowed to accumulate within the spraying areas
for they may be whirled up and give rise to an explosive atmosphere. This does not apply to deposits
on filter devices and accumulations of flock in reservoirs where filters and reservoirs are integrated in
the spraying area and are designed to collect the flock.
0.2.4 Particular attention should be paid to the prevention of electrostatic charges on different
surfaces located in the vicinity of the flock cloud. This could apply to e.g. workpieces during the
coating process.
0.3 Electric hazards
0.3.1 Electric shock (by direct or indirect contact) can be generated, for instance, by contact with
– live parts, which are not insulated for operational reasons,
– conductive parts, which are not connected to dangerous voltage during normal operation, but only
in case of failure,
– insulated live parts with insufficient or damaged insulation due to external impact.
0.3.2 Inadequate earthing may occur, for instance, due to
– faulty connections to the protective earthing system,
– a too high resistance to earth (e. g. contamination by flock).

- 5 - EN 50050-3:2013
0.3.3 Hazards could occur, for instance, if hazardous malfunctions (e.g. shortcut of electronic
safety circuits) occur due to interferences of the high voltage equipment and the components of the
control and safety systems.
0.3.4 Hazardous electrostatic discharges could be generated, for instance, by non-earthed
conductive components or by large insulating surfaces, especially if they are backed with conductive
material.
1 Scope
1.1 This European Standard specifies the requirements for hand-held or hand-operated electrostatic
spraying equipment for ignitable flock within a temperature range from 5 °C to 40 °C to be used in
explosive atmospheres generated by their own spray cloud.
This European Standard deals with all electrical hazards significant for the electrostatic spraying of
flock, which could also contain small quantities of added metal particles, if the work is carried out
under conditions recommended by the manufacturer. In particular, this includes ignition hazards
resulting from the generated explosive atmosphere. This European Standard specifies the design-
related and test requirements for electrostatic spraying equipment of type A-F and type B-F according
to Table 1 of EN 50223:2010.
1.2 Electrostatic applicators are considered to be equipment of group II, category 3D for use in
potentially explosive areas of zone 22. All other parts of hand-held electrostatic spraying equipment
are considered to be equipment of category 3D if they are installed or used in potentially explosive
areas of zone 22.
NOTE 1 Solvent vapours which could be evaporated by workpieces coated with adhesives do not lead to a
zone 2 in the flocking area.
1.3 In addition to the requirements above, the requirements of EN 1953 applies with regard to all
other significant hazards relevant for applicators (e.g. health hazards, inadequate ergonomics).
1.4 This European Standard does not apply to
 zone classification of the areas in and around spray booths [see EN 50223],
 zone classification of other areas with potentially explosive atmosphere [see EN 60079-10-2],
 selection, erection and application of other electrical and non-electrical equipment in areas with
explosion hazard [see EN 60079-14 and EN 50223],
 cleaning of spraying areas, see instruction manual of the spray booth,
 fire prevention and protection, for instance fire hazards due to other sources [see EN 50223],
 explosion protection systems [see EN 50223],
 dust hazards [see EN 12981].
NOTE 2 Noise is not considered to be a significant hazard for hand-held spraying equipment for ignitab
...