SIST EN 50050-1:2014

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

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

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
• Public Enquiry End Date: 27-Oct-2011
• Publication Date: 18-Mar-2014
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• ICS: 87.100 - Paint coating equipment
• Technical Committee: EXP - Product for explosive atmospheres
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-Dec-2013
• Due Date: 21-Feb-2014
• Completion Date: 19-Mar-2014
• 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: EN 50050-1:2013 - Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held spraying equipment for ignitable liquid coating materials

Relations

• Replaces: SIST EN 50050:2007 - Electrical apparatus for potentially explosive atmospheres - Electrostatic hand-held spraying equipment
• Effective Date: 28-Jan-2023
• Revised: SIST EN 50050:2007 - Electrical apparatus for potentially explosive atmospheres - Electrostatic hand-held spraying equipment
• Effective Date: 07-Jun-2022
• Revised: SIST EN 50050:2007 - Electrical apparatus for potentially explosive atmospheres - Electrostatic hand-held spraying equipment
• Effective Date: 23-Jul-2014

Overview

EN 50050-1:2013 - Electrostatic hand-held spraying equipment - Safety requirements - Part 1 defines safety, design and test requirements for hand-held electrostatic spraying equipment used with ignitable liquid coating materials. It applies to equipment that can generate an explosive atmosphere from its own spray cloud (zone 1 or 2 conditions generated by the equipment) within a temperature range of 5 °C to 40 °C. The standard covers ignition hazards from the spray cloud, applicable ionisators, equipment classification (group II, categories 2G and 3G), and quality assurance provisions (Annex C).

Key topics and technical requirements

• Scope and classification
  • Equipment types covered (type A–L per EN 50176:2009).
  • Electrostatic applicators treated as group II, category 2G (zone 1/2 generated by equipment); other parts category 3G when used/installed in zone 2.
• Design and construction
  • Requirements to prevent ignition sources and unsafe electrostatic discharges.
  • Mechanical, electrical and ergonomic hazards referenced (EN 1953 covers other applicator hazards).
• Testing
  • General tests, electrical safety tests, conditioning and ignition tests (see Annexes A & B).
  • Specific ignition-protection test methods (shunt & oscilloscope; gas mixture ignition tests).
• Information & marking
  • Instruction manual content, marking and operational guidance for safe use in potentially explosive atmospheres.
• Ionisators
  • Requirements for ionisators with high-voltage corona charging; parts intended for Zone 2 provide category 3G (Annex D).
• Quality assurance
  • Recommendations for QA for electrical and mechanical assembly and testing (Annex C).
• Limitations & exclusions
  • Does not cover zone classification (EN 12215, EN 60079-10-1), selection/installation of other equipment (EN 60079-14), fire prevention, cleaning, or pressurized supply machinery (EN 12621).
• Material electrical properties
  • Notes that coating conductivity/resistivity can affect electrostatic charging performance.

Applications and who uses this standard

EN 50050-1 is intended for:

• Manufacturers and designers of hand-held electrostatic sprayers and ionisators.
• Certification bodies and test laboratories performing ignition and electrical safety tests.
• Plant safety engineers, compliance teams and maintenance staff in industries using flammable coatings (automotive, industrial finishing, furniture, aerospace).
• Procurement teams specifying equipment for use in spray booths or local spray operations where the spray cloud may create explosive atmospheres.

Related standards (normative / commonly referenced)

• EN 50176:2009 (stationary electrostatic application equipment)
• EN 1953 (atomising & spraying equipment safety)
• EN 12215, EN 60079 series, EN 1149-5, EN 60529, EN ISO 12100

Using EN 50050-1 helps ensure safe design, testing and documentation of hand-held electrostatic spraying equipment for compliance with explosion-protection requirements and industry best practices.

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.

1 Scope
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 50050-1:2013, 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 spray booth,
 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.

- 7 - EN 50050-1:2013
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.

EN 1149-5 Protective clothing – Electrostatic properties – Part 5: Material
performance and design requirements
EN 1953 Atomising and spraying equipment for coating materials –
Safety requirements
EN 12215 Coating plants – Spray booths for application of organic liquid coating
materials – Safety requirements
prEN 50059:2011 Electrostatic hand-held spraying equipment – Safety requirements –
Hand-held spraying equipment for non-ignitable coating materials
EN 50176:2009 Stationary electrostatic application equipment for ignitable liquid coating
material – Safety requirements
EN 60079-0 Explosive atmospheres – Part 0: Equipment - General requirements
(IEC 60079-0)
EN 60079-7:2007 Explosive atmospheres – Part 7: Equipment protection by increased
safety "e" (IEC 60079-7:2006)
EN 60204-1 Safety of machinery – Electrical equipment of machines –
Part 1: General requirements (IEC 60204-1)
EN 60529 Degrees of protection provided by enclosures (IP code)
(IEC 60529)
EN 61340-4-1 Electrostatics – Part 4-1: Standard test methods for specific applications
– Electrical resistance of floor coverings and installed floors
(IEC 61340-4-1)
EN 62061 Safety of machinery – Functional safety of safety-related electrical,
electronic and programmable electronic control systems (IEC 62061)
EN ISO 12100 Safety of machinery - General principles for design - Risk assessment
and risk reduction (ISO 12100)
EN ISO 13849-1 Safety of machinery – Safety-related parts of control systems –
Part 1: General principles for design (ISO 13849-1)
EN ISO 20344 Personal protective equipment – Test methods for footwear (ISO 20344)

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
hand-held spraying equipment
hand-held or hand-operated equipment for electrostatic coating with ignitable liquid coating materials,
generally comprising the following parts:
 applicator;
 coating material supply system;
 control device;
 high voltage supply system, if applicable (can be an integral part of the applicator);
 connecting cable
3.2
connecting cable
electric cable to the applicator
3.3
earthing device
device for earthing the electrostatic hand-held spraying equipment permanently
3.4
spraying device
outlet opening for the coating materials
3.5
high voltage electrode
conductive part of the applicator which is at high voltage and serves to charge the coating materials directly
or indirectly
3.6
control device
device generally having the following functions:
 control of, for instance, the coating material supply system and the control air
Note 1 to entry: A combination of the control device and the high voltage supply according to 3.8 is possible.
3.7
applicator
equipment for application of coating materials
Note 1 to entry: In general, the applicator comprises the following parts:
- high voltage electrode;
- high voltage supply, if applicable, can be an integral part of the applicator;
- housing;
- spraying device;
- exchangeable attachment parts (e.g. nozzles, extensions, angular pieces, etc.);
- if applicable, battery unit (integrated fixedly, or attached).

- 9 - EN 50050-1:2013
3.8
high voltage supply for applicators
in general, high voltage supply comprising the following parts:
 low voltage section with devices for switching on and off the hand-held spraying equipment and for
adjustment, control, regulation, limitation and monitoring of current and voltage, as well as the required
connecting cables;
 high voltage generator
3.9
spraying area
area, closed or not, in which the coating material is applied to the workpiece by the hand-held spraying
equipment
3.10
dangerous discharge
discharge which generates the hazard of ignition of explosive mixtures or of electric shock
3.11
coating material supply system
in general, coating material supply system comprising the following:
 reservoir for coating materials;
 dosing and mixing devices for coating materials;
 supply lines for coating materials;
 devices for drive, control and monitoring of coating materials
3.12
workpiece
article to which the coating material is applied
3.13
ignitable liquid coating materials (coating material)
sprayed materials, especially varnishes, which could be ignited by an effective ignition source and which
continue to burn after the ignition source has been removed or may react in the form of an explosion
Note 1 to entry: A formula for the estimation of ignitability on the basis of the composition of the coating material is
given in Annex E.
3.14
explosive atmosphere
mixture of air, under atmospheric conditions, and of ignitable substances in the form of gas, vapour, mist,
powder or flock, in such proportions that it can be ignited by effective ignition sources, such as excessive
temperature, arcs or sparks
Note 1 to entry: See EN 1127-1.
3.15
lower explosion limit
LEL
concentration of ignitable gas, vapour, mist, powder or flock in air below which an explosive atmosphere will
not be formed
3.16
discharge energy
energy discharged from a conductive part of the installation in form of a spark which could cause both
electric shock to a person and an ignition of an explosive atmosphere

3.17
antistatic footwear
footwear that has a resistance to earth via its sole, which is low enough to prevent the build-up of
electrostatic charges capable to produce an incendive discharge
Note 1 to entry: See EN ISO 20344.
Note 2 to entry: A required electric insulating resistance to prevent electric shocks is not contradictory to this
definition.
3.18
antistatic clothes
clothes that have a resistance to earth, which is low enough to prevent the build-up of electrostatic charges
capable of an incendive discharge
Note 1 to entry: See EN 1149-5.
Note 2 to entry: A required electric insulating resistance to prevent electric shocks is not contradictory to this
definition.
3.19
antistatic floor
floor that has a resistance to earth, which is low enough to prevent the build-up of electrostatic charges
capable to produce an incendive discharge
3.20
accessories
devices, components and other equipment, except for 3.7 of this standard
3.21
U
max
maximum output voltage of the high-voltage generator
3.22
I
max
maximum output current of the high-voltage generator
3.23
repeated test
test of the hand-held spraying equipment, including all accessories, to be carried out at regular intervals
3.24
ionisator
an ionisator is a device to discharge electrostatic charge e.g. from workpieces
3.25
contact surface area
part of the handle connected to earth to discharge the charge of a person
4 Requirements for hand-held spraying equipment for ignitable liquid coating
materials
4.1 General requirements
4.1.1 Hand-held spraying equipment shall be designed and constructed to prevent exceeding the
maximum transferred charge of single sparks of 60 nC, or the maximum discharge energy of 0,24 mJ.
4.1.2 All conductive parts of the hand-held spraying equipment which are not at high voltage shall be
earthed. Earthing of conductive parts inside the hand-held spraying equipment can be neglected if
hazardous discharges have been prevented by design. Conductive parts connected to measuring and
control circuits shall be earthed with a resistance of ≤ 100 MΩ. Parts which are at high voltage for operational
reasons shall be bonded to each other in a conductive way.
4.1.3 A device shall be present connecting the liquid coating material at or inside the applicator with a
resistance of ≤ 10 kΩ to earth.

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4.1.4 Applicators shall meet the applicable requirements of EN 1953.
4.1.5 If for technical reasons earthing according to 4.1.3 is not possible it shall be ensured that the limit
values specified in 4.1.1 are observed in all modes of operation.
4.1.6 Electrical connecting cables shall be connected to the applicator or associated equipment in a
secured way. Requirements of 5.3.1 shall be fulfilled.
4.1.7 The handle of the applicator shall have a contact surface area of conductive material of at least
20 cm². This contact surface area shall be earthed, and the resistance to earth shall not exceed 1 MΩ.
4.1.8 Operating triggers of the applicators shall be biased to the off position. In this position, the coating
material supply system shall be cut-off immediately, and the high voltage supply shall be cut-off within 2 s.
For high voltage supplies having several outputs, the cut-off function shall be ensured for each
output/applicator individually.
4.1.9 Applicators shall have an earth connection. The resistance to earth shall not exceed 1 MΩ. The
connection shall be designed in accordance with 4.2.1 of EN 60079-7:2007.
4.1.10 Components on which ignition safety depends shall be designed, arranged and built in to not impair
the safety of the electrostatic hand-held spraying equipment. Examples of components on which ignition
safety depends are spray nozzles, cables of the earthing system, resistors and other electronic components.
Insulating materials of parts under high voltage shall be constructed according to the operation, transport
and storage conditions.
4.1.11 The electric equipment not connected to the high voltage system shall comply with EN 60204-1.
4.1.12 If energy limiting electric components (e.g. resistances) are used, they shall be designed in such a
way that they are protected against damage. All components shall withstand a short circuit between the high
voltage electrode and earth for 5 min. The degree of protection shall remain unchanged.
4.1.13 It shall be ensured that component parts inside the applicator with included potential ignition
sources, except for the spraying device, are separated from explosive atmosphere (e.g. by sealing, IP64, .).
As an alternative, the applicator, except for the spraying device, can be designed according to IP64
according to EN 60529.
4.1.14 Electrical cables connected to the applicator shall have an earthed shielding which is protected
against mechanical damage (e.g. by insulation).
4.1.15 It shall be ensured that the limit values for maximum discharge energy and maximum transferred
charge defined in 4.1.1 are observed under any operating conditions. Faults of the high voltage supply for
applicators shall be considered. This safety function (monitoring function) shall meet the requirements of
SIL 1 (e.g. according to EN 62061) or PL c (e.g. according to EN ISO 13849-1). Alternatively, this safety
level will be reached if the values for outlet current and outlet voltage according to 5.4.1 will be limited by two
Zener diodes or equivalent parts (e.g. power semiconductors) loaded up to two-thirds in the case of failure.
In general, the fail-safe principle shall be applied.
In case of failure of the safety functions the hand-held spraying equipment shall be led in a safe state.
If the safety related functions of the hand-held spraying equipment depend on software, hazards due to
program errors shall be considered in particular.
4.2 Requirements for the accessories
4.2.1 Accessories that are used in hazardous areas, as applicable, shall be submitted to a cable pull test
according 5.3.1. Non-metallic accessory that is used in hazardous areas shall be submitted to an impact
resistance test according to 5.3.2. Accessories that are used in hazardous areas shall comply with the
minimum degree of protection IP54 according to EN 60529 and may not exceed the maximum allowed
surface temperature. Accessories that are used in hazardous areas shall be designed and constructed to

prevent exceeding the maximum transferred charge of single sparks of 60 nC, or the maximum discharge
energy of 0,24 mJ.
4.2.2 Control devices shall have an earth connection. The resistance to earth shall not exceed 1 MΩ. The
connection shall be designed in accordance with 4.2.1 of EN 60079-7:2007.
4.2.3 It shall not be possible to modify the safety-relevant operating parameters maximum output high
voltage, maximum spraying current and maximum short circuit current from the checked limit values
according to 5.4.1.1, 5.4.1.2 and 5.4.1.3.
4.2.4 Detachable earth connections shall be marked clearly.
4.2.5 In case conductive parts are used for coating material supply system, these parts shall be earthed
according to 4.2.2, or shall be connected to the high voltage supply in such a way that their potential is
permanently identical with that of the applicator. The equipotential bonding shall be done by a discrete
electronic conductor. Accessories shall fulfil the requirements of 4.1.1.
4.2.6 All parts of the coating material supply system made of non-conducting material shall pass the high
voltage test according to 5.4.2.2, with the coating material at high voltage potential during normal operation.
Accessories shall fulfil the requirements of 4.1.1.
5 Tests
5.1 General
All tests described in 5.2, 5.3, 5.4 and 5.5 shall be carried out with two applicators according to the following
order: cable pull test, impact test, drop test, test of electrical safety and ignition tests.
All tests described in 5.2, 5.3, 5.4 and 5.5 shall be carried out with cleaned applicators.
The value of the output high voltage and output current shall be set to the maximum value during the tests
according to 5.4.1.1 to 5.4.1.3 and 5.5. The manufacturer shall indicate the required relevant operational
parameters (e.g. supply voltage).
Tests described in 5.3 and 5.4 shall be carried out by a temperature of (22 ± 5) °C, except for those in which
the upper or lower limit value of the operating temperature is assumed to be the more unfavourable for
passing the test.
5.2 General tests
5.2.1 Test of earth connections
It shall be tested that the hand-held spraying equipment has an earth connection complying with 4.1.9,
4.1.11 and 4.2.2.
5.2.2 Resistance to earth test
The resistance shall be measured using a measuring device at a measurement voltage from 500 V to
1 000 V, see 4.1.2, 4.1.3, 4.1.7, 4.1.9 and 4.2.2.
5.2.3 Test of contact surface area
The size of the contact surface area shall be proven by measurement (e. g. tape measure), see 4.1.7.
5.2.4 Test of OFF-position
The function of the OFF-position shall be proven by measurement, see 4.1.8.

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5.3 Conditioning test
5.3.1 Cable pull test
Each cable of the applicator, except for cables connecting intrinsically safe circuits among each other, shall
be submitted to a cable pull test with 150 N for 60 s.
During the test, the test sample shall not show visible movements of the cable in its fixture.
5.3.2 Impact test
The test shall be carried out on two applicators which are ready for operation, one test without and one with
attachment parts (e.g. extensions, angular pieces, battery unit, etc.), as well as on the accessories which
have to be located within the potentially hazardous area. The test shall be carried out once at four different
positions. The impact points shall be those points which are considered to be the weakest ones, and they
shall be located on the outer side of those parts which may be exposed to impacts.
The test samples shall be exposed to a test mass of 1 kg falling perpendicularly from a height of 0,7 m. The
test mass shall be equipped with a hemispherical impact load of at least 25 mm in diameter made of
hardened steel. The samples shall be positioned on a steel plate in such way that the direction of impact is
perpendicular to the surface to be tested. The steel plate shall have a minimum mass of 20 kg, or shall be
fixed rigidly, or shall be embedded into the floor, e.g. in concrete.
After this test, the samples of the applicators shall pass the ignition test (see 5.5.1).
The degree of protection IP54 of the accessories shall not be impaired by the impact test.
5.3.3 Drop test
The test shall be carried out on two applicators which are ready for operation, one test without and one with
attachment parts (e.g. extensions, angular pieces, battery unit, etc.). The applicators are dropped four times
from a height of 1 m on to a horizontal concrete surface. The position considered to be the most
unfavourable one shall be selected for the sample during the drop test.
After this test, the samples shall pass the ignition test (see 5.5.1).
5.4 Tests for electrical safety
5.4.1 Measurement of the parameters high voltage, spraying current, short-circuit current
5.4.1.1 Measurement of maximum output high voltage
The measurement of maximum output high voltage shall be carried out without load at the end of the high
voltage electrode at the spraying device of the applicator.
5.4.1.2 Measurement of maximum spraying current
The measurement of the maximum spraying current shall be carried out with a µ-ampere meter connected
between a metal plate and earth potential. The switched-on applicator is approached at several velocities to
the metal plate and the maximum spraying current shall be recorded.
5.4.1.3 Measurement of maximum short-circuit current
The measurement of the maximum short-circuit current shall be carried out with a µ-ampere meter, from the
end of the high voltage electrode at the spraying device of the applicator against earth potential. The
duration of the test shall be at least 5 min, see 4.1.12.

5.4.2 Voltage test
5.4.2.1 Test of parts at high voltage
The parts at high voltage of the applicator, which produce hazard of incendive discharges inside the
applicator, shall be tested at U for 90 min. There shall be no incendive discharges. After the test, the
max
degree of protection of the electrostatic hand-held spraying equipment shall be retained.
All parts of the applicator which are at earth potential for operational reasons shall be earthed during the test.
NOTE The voltage of U implies the suppression of the corona current at the high-voltage electrode e.g. by an
max
insulating moulding.
5.4.2.2 Test of the high voltage cable
A sample of the high voltage cable of at least 2,5 m is raised to a voltage of 1,2 U for a period of 24 h, the
max
electrically conductive shielding of the cable being earthed. The shielding shall be removed min. 75 cm at
each end. There shall be no breakdown.
5.4.3 Test of the type of protection of applicators
Compliance with degree of protection IP 64 shall be tested according to EN 60529.
5.5 Ignition test
5.5.1 General
Either the test according to 5.5.2 or 5.5.3 shall be carried out.
5.5.2 Test using a shunt and an oscilloscope
Test for observance of the limit value for maximum transferred charge of single sparks (60 nC) by
measurement according to Annex A.
5.5.3 Test within the gas mixture
Test for observance of the limit value for maximum discharge energy of single sparks (0,24 mJ) according to
Annex B.
5.6 Tests of the accessories
5.6.1 Test of the type of protection
Compliance with degree of protection IP54 according to EN 60529 shall be tested on samples of equipment
category 3G.
5.6.2 Test of the coating material supply system
All parts of the coating material supply system made of non-conductive material are filled with ordinary tap
water at ambient temperature, and placed on an earthed metal plate, or have to be wrapped with earthed
metallic foils. The tap water is raised to a voltage of 1,2 Umax for a period of 24 h. There shall be no
breakdown. A test within a water bath can be used alternatively.
The measurement of the ability of the coating material supply system to be charged (60 nC) shall be carried
out according to Annex A.
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6 Information for use
6.1 General
The information for use with all information relevant for safety of normal operation and maintenance shall be
written in the language of the user. Furthermore, it shall be accompanied by a version preferably in the
language of the manufacturer.
6.2 Instruction manual
6.2.1 General
Each electrostatic hand-held spraying equipment shall be accompanied by an instruction manual according
to EN ISO 12100. It shall also contain the contents of Table 1.
NOTE The instruction manual can be written in a general comprehensive, illustrated or symbolic language.
The instruction manual shall contain the following references:
1) electrostatic hand-held spraying equipment shall only be operated by competent persons;
2) all protective gloves used shall comply with the requirements of 6.2.4;
3) electrostatic hand-held spraying equipment shall be used only in spraying areas according to EN 12215,
or under equivalent ventilation conditions;
4) electrostatic hand-held spraying equipment shall be interlocked with the forced ventilation in such a way,
that the coating material supply system and the high voltage shall only be effective, if the forced
ventilation is operated at the minimum exhaust volume flow or at a higher exhaust volume flow;
The minimum exhaust volume flow is the minimum air volume flow which dilutes the concentration of
solvents to a maximum of 25 % of LEL of solvents in air. Here, all air performance losses have to be
considered.
5) all conductive components of the system, like for instance floors, walls, ceilings, protective gratings,
transport devices, workpieces, reservoirs, reciprocators or constructional parts, etc. within the spraying
area, except for parts which are at high voltage for operational reasons, shall be connected to the
earthing system. Parts of the booth shall be earthed in accordance with EN 12215;
6) the recommended specific electrical resistivity of the ignitable liquid coating material shall be greater
-1
;
than 20 MΩ cm or the electric conductance shall be lower than 50 nS cm
For the determination of the specific electrical resistivity and the electrical conductivity the
EN ISO 15091:2012 can be used.
7) details of transportation limitations, storage life and storage limitations for the electrostatic hand-held
spraying equipment and accessories, including, where applicable, the following:
a) temperature range,
b) humidity range,
c) pressure range,
d) time.
The instruction manual shall contain a list of safety relevant spare and wear parts.
The instruction manual shall contain the admissible combinations of devices, including the indication of the
admissible accessories. This can also be fulfilled by a system approval drawing identifying the equipment
and options of the system.
6.2.2 Cleaning, maintenance and repair
6.2.2.1 General
The manufacturer shall supply comprehensive information on cleaning and maintenance. The electrostatic
hand-held spraying equipment shall be cleaned and maintained regularly according to the instructions of the
manufacturer. The instruction manual shall contain the following warning references:
 electrostatic hand-held spraying equipment shall only be operated in a safe and sound state. Damaged
equipment shall be put out of operation immediately and shall be repaired;
 spare parts can have safety relevant properties;
 list of relevant Directives;
 all obligations laid down in the relevant Directives have to be fulfilled also by spare parts;
NOTE Obligations are e. g. type examination, quality assessment, etc.
 worn parts shall be replaced immediately.
Before starting cleaning or maintenance works,
 the high voltage supply shall be cut off and safeguarded against restart;
 the applicator shall be disconnected from energy sources like high voltage, low voltage and compressed
air.
6.2.2.2 Earthing of containers for cleaning liquids
Only electrically conducting containers shall be used for cleaning liquids; the containers shall be earthed.
6.2.2.3 Characteristics of the cleaning liquid
The flash point of the cleaning liquids used shall at least be 15 K above the ambient temperature. Otherwise,
the cleaning works shall be carried out at forced ventilated cleaning places.
Non-ignitable cleaning agents shall be preferred.
6.2.2.4 Earthing of the jigs for workpieces
Appropriate measures shall ensure that the resistance to earth of the jig shall not exceed 1 MΩ, measured
with a measurement voltage from 500 V to 1 000 V.
6.2.3 Test intervals of repeated tests
For a safe operation of electrostatic hand-held spraying equipment the intervals for repeated tests shall be
determined by the manufacturer. The intervals depend on the operational and local conditions. The following
maximum test intervals listed in Table 1 are recommended:

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Table 1 — Test intervals
Subclause Reference Test interval
5.2 Earthing measures Weekly
6.2.1 Interlocking of forced ventilation Yearly
and electrostatic hand-held
spraying equipment
6.2.2 Check of electrostatic hand-held Weekly
spraying equipment for damage
6.2.4 Additional information
The instruction manual shall contain at least the following additional information:
 if necessary, description of the operational restrictions for equipment marked with "X“;
 all references required for a correct operation of the equipment;
 mode of functioning of the safety devices;
 measures in case of disturbances and repairs;
 reference: "This electrostatic hand-held spraying equipment could present hazards if it is not operated
according to the information given in the instruction manual”;
 footwear to be worn by the operator shall comply with EN ISO 20344. The measured insulation resistance
shall not exceed 100 MΩ;
 protective clothing to be worn, i
...