EN 50050-1:2013

Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held spraying equipment for ignitable liquid coating materials

1.1 This European Standard specifies the requirements for hand-held or hand-operated electrostatic spraying equipment for ignitable liquid coating materials to be used in explosive atmospheres generated by their own spray cloud within a temperature range from 5 °C to 40 °C. This European Standard deals with all hazards significant for the electrostatic spraying of liquid coating materials, 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-L according to Table 1 of EN 50176:2009. 1.2 With regard to explosion protection and prevention measures, this European Standard also applies to ionisators with high voltage corona charging. Ionisators in conformity with EN 50050-1 provide equipment category 2G. Parts of ionisators, which are intended to be used or installed in Zone 2, provide equipment category 3G in conformity with EN 50050-1, see Annex D. 1.3 Electrostatic applicators are considered to be equipment of group II, category 2G for use in potentially explosive areas of zone 1 or 2, which have been generated by the equipment itself. All other parts of hand-held electrostatic spraying equipment are considered to be equipment of category 3G if they are installed or used in potentially explosive areas of zone 2. 1.4 All other significant hazards relevant for applicators (e.g. ejection of fluids, mechanical strength, electrical hazards (apart from the electrostatic hazards), noise, explosion, contact with or inhalation of dangerous substances, ergonomics) are covered by EN 1953. 1.5 This European Standard also gives details regarding quality assurance systems for electrostatic spraying equipment, see Annex C. 1.6 Additional requirements may be applicable to equipment designed for use in food and pharmaceutical industry. 1.7 This European Standard does not apply to  zone classification of the areas in and around spray booths [see EN 12215],  zone classification of other areas with potentially explosive atmosphere [see EN 60079-10-1],  selection, erection and application of other electrical and non-electrical equipment in areas with explosion hazard [see EN 60079 14 and EN 12215],  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 12215],  requirements for machinery for the supply and recirculation of coating material under pressure [see EN 12621]. 1.8 When processing coating materials having specific electrical properties (conductivity, resistivity) the function of the hand-held spraying equipment to charge coating materials electrostatically may be affected as a result of a voltage drop at the charging electrode.

Elektrostatische Handsprüheinrichtungen - Sicherheitsanforderungen - Teil 1: Handsprüheinrichtungen für entzündbare flüssige Beschichtungsstoffe

Equipement manuel de projection électrostatique – Exigences de sécurité – Partie 1 : Equipement manuel de projection de liquides de revêtement inflammable

1.1 La présente Norme Européenne spécifie les exigences relatives aux matériels portatifs de projection électrostatique ou aux matériels actionnés manuellement pour matériaux liquides de revêtement inflammables utilisés en atmosphères explosives, celles-ci étant générées par leur propre nuage de projection dans une plage de températures de 5 °C à 40 °C. La présente Norme Européenne traite de tous les phénomènes dangereux importants concernant la projection électrostatique des matériaux liquides de revêtement, susceptibles 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 dangers 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-L, conformément au Tableau 1 de la EN 50176:2009. 1.2 En ce qui concerne la protection contre l'explosion et les mesures de prévention, la présente Norme Européenne s'applique également aux ioniseurs avec charge sous haute tension par effet couronne. Les ioniseurs conformes à la EN 50050-1 fournissent une catégorie de matériels 2G. Les parties des ioniseurs, qui sont destinées à être utilisées ou installées en Zone 2, fournissent la catégorie de matériels 3G en conformité avec la EN 50050-1 (voir Annexe D). 1.3 Les applicateurs électrostatiques sont considérés comme des matériels de groupe II, catégorie 2G pour une utilisation dans des emplacements potentiellement explosifs de la zone 1 ou de la zone 2, qui sont le résultat du fonctionnement du matériel lui-même. Toutes les autres parties des matériels manuels de projection électrostatique sont considérées comme des matériels de catégorie 3G, si elles sont installées ou utilisées dans des emplacements potentiellement explosifs de la zone 2. 1.4 Tous les autres phénomènes dangereux importants qui ont rapport aux applicateurs (par exemple, éjection de fluides, résistance mécanique, dangers électriques (à part les dangers électrostatiques), bruit, explosion, contact avec des substances dangereuses ou inhalation de celles-ci, ergonomie).sont couverts par la EN 1953. 1.5 La présente Norme Européenne donne également des détails relatifs aux systèmes d'assurance qualité pour le matériel de projection électrostatique (voir Annexe C). 1.6 Des exigences supplémentaires peuvent être applicables aux matériels conçus pour être utilisés dans l'industrie alimentaire et dans l'industrie pharmaceutique. 1.7 La présente Norme Européenne n’est pas applicable  à la classification en zones des emplacements dans et autour des cabines de pulvérisation [voir la EN 12215],  à la classification en zones d'autres emplacements comportant une atmosphère potentiellement explosive [voir la EN 60079-10-1],  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 12215],  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 la EN 12215],  aux exigences relatives aux installations d'alimentation et de circulation de matériaux de revêtement sous pression [voir la EN 12621]. 1.8 Lors du traitement des matériels de revêtement ayant des propriétés électriques spécifiques (conductivité, résistivité), la fonction des matériels manuels de projection pour charger de manière électrostatique les matériels de revêtement peut être altérée par la chute de tension aux bornes de l'électrode de charge.

Oprema za ročno elektrostatično brizganje - Varnostne zahteve - 1. del: Ročna oprema za brizganje vnetljivih tekočih prekrivnih snovi

Ta evropski standard določa zahteve za opremo za ročno elektrostatično brizganje vnetljivih tekočih prekrivnih snovi, ki se uporabljajo v eksplozivnih atmosferah, ki jih ustvari njihov lastni oblak prahu, v temperaturnem območju 5–40 °C. Ta evropski standard zajema vse večje nevarnosti, ki se pojavijo pri elektrostatičnem brizganju vnetljivih tekočih prekrivnih snovi, ki lahko vsebujejo manjše količine dodanih kovinskih delcev, če se delo izvaja 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–L v skladu s tabelo 1 standarda EN 50176:2009. V okviru zaščite pred eksplozijami in preventivnih ukrepov se ta evropski standard uporablja tudi za ionizatorje z visokonapetostnim koronskim polnjenjem. Ionizatorji v skladu s standardom EN 50050-1 predstavljajo opremo kategorije 2G. Deli ionizatorjev, ki so namenjeni uporabi ali namestitvi v coni 22, so oprema, ki sodi v kategorijo 3D, v skladu s standardom EN 50050-1:2013. Elektrostatične naprave za nanašanje sodijo v skupino II, kategorijo 2G za uporabo v potencialno eksplozivnih okoljih con 1 ali 2, ki jih ustvari oprema sama. Vsi ostali deli ročne opreme za elektrostatično brizganje sodijo v kategorijo 3G, če so nameščeni in se uporabljajo v potencialno eksplozivnih območjih cone 2. Vse ostale večje nevarnosti, povezane z opremo za nanašanje (npr. nanašanje tekočin, mehanska trdnost, nevarnosti zaradi elektrike (razen elektrostatičnih nevarnosti), hrup, eksplozija, stik z nevarnimi snovmi ali njihovo vdihavanje, ergonomika), so zajete v standardu EN 1953. Ta evropski standard navaja tudi podrobnosti glede sistemov zagotavljanja kakovosti za opremo za elektrostatično brizganje. Za opremo, zasnovano za uporabo v živilski in farmacevtski industriji, morda veljajo dodatne zahteve.

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 50050-1:2014 - Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held spraying equipment for ignitable liquid coating materials

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-junij-2014
1DGRPHãþD
SIST EN 50050:2007
2SUHPD]DURþQRHOHNWURVWDWLþQREUL]JDQMH9DUQRVWQH]DKWHYHGHO5RþQD
RSUHPD]DEUL]JDQMHYQHWOMLYLKWHNRþLKSUHNULYQLKVQRYL
Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held
spraying equipment for ignitable liquid coating materials
Elektrostatische Handsprüheinrichtungen - Sicherheitsanforderungen - Teil 1:
Handsprüheinrichtungen für entzündbare flüssige Beschichtungsstoffe
Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held
spraying equipment for ignitable liquid coating materials
Ta slovenski standard je istoveten z: EN 50050-1:2013
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 50050-1
NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM
ICS 87.100 Supersedes EN 50050:2006 (partially)

English version
Electrostatic hand-held spraying equipment -
Safety requirements -
Part 1: Hand-held spraying equipment for ignitable liquid coating
materials
Equipement manuel de projection Elektrostatische Handsprüheinrichtungen -
électrostatique - Exigences de sécurité - Sicherheitsanforderungen -
Partie 1 : Equipement manuel de Teil 1: Handsprüheinrichtungen für
projection de liquides de revêtement entzündbare flüssige Beschichtungsstoffe
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 50050-1:2013 E
Contents
Page
Foreword . 3
0 Introduction . 5
0.1 Process . 5
0.2 Explosion hazards . 5
0.3 Electric hazards . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements for hand-held spraying equipment for ignitable liquid coating materials . 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 . 13
5.4 Tests for electrical safety . 13
5.5 Ignition test . 14
5.6 Tests of the accessories . 14
6 Information for use . 15
6.1 General . 15
6.2 Instruction manual. 15
6.3 Marking of electrostatic hand-held spraying equipment and associated control devices . 17
Annex A (normative) Test for ignition protection using a shunt and an oscilloscope . 20
Annex B (normative) Ignition test within the gas mixture . 21
B.1 General . 21
B.2 Preparations . 21
B.3 Preliminary test . 21
B.4 Test. 22
B.5 Result . 22
Annex C (informative) Quality assurance systems for electrostatic spraying equipment . 23
C.1 General . 23
C.2 Electrical assembly . 23
C.3 Mechanical assembly . 24
C.4 Tests . 24
Annex D (normative) Requirements for explosion protection and prevention for ionisators . 25
Annex E (informative) Ignitability of water-based paints . 26
E.1 General . 26
E.2 Non-ignitable . 26
E.3 Hard to ignite . 26
E.4 Ignitable . 26
Annex ZY (informative) Significant changes between this European Standard and
EN 50050:2006 . 27
Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 29
Bibliography . 30
Figure
Figure B.1 — Example of a test arrangement . 21
Tables
- 3 - EN 50050-1:2013
Table 1 — Test intervals. 17
Table D.1 — Requirements for ionisators . 25

Foreword
This document (EN 50050-1:2013) 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
(dow) 2016-10-14
• latest date by which the national standards
conflicting with this document have to
be withdrawn
In combination with EN 50050-2:2013 and EN 50050-3:2013, 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.
- 5 - EN 50050-1:2013
0 Introduction
0.1 Process
During the electrostatic coating process the liquid coating material is transported to an applicator where it is
atomised and converted to droplets by mechanical forces and by the influence of an electric field. During this
atomising process the droplets are charged by high voltage of some 10 kV and a spray cloud is generated.
The charged droplets are attracted by and applied to the earthed workpiece.
Droplets, which are not applied to the workpiece (overspray) are removed by a suction device or by other
means.
After the coating process the coated workpieces are introduced into a dryer where the solvent is evaporated
and a dry film of coating material is generated.
0.2 Explosion hazards
0.2.1 An explosion could occur, if
 the concentration of sprayed ignitable liquid coating material in air is within the explosion limits,
 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 an explosive
atmosphere.
0.2.2 An explosive atmosphere can only explode within a given range of concentration, but not, if the
concentration is above or below this range.
NOTE If an explosive mixture of coating materials and air is trapped into a closed room, an explosion can lead to a
fatal increase of pressure.
0.2.3 Particular attention should be paid to the prevention of electrostatic charges on different surfaces
located in the vicinity of the spraying cloud. This could apply to e.g. workpieces during the coating process.
Grounding is critical to the prevention of electrostatic charge to any conductive objects in the spray area.
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 coating materials).
0.3.3 Hazards could occur, for instance, if hazardous malfunctions (e.g. shortcut of electronic safety
circuits) occur due to interferences of the electrostatic 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.
...