FprEN 50176

Automatic electrostatic application systems for ignitable coating materials - Safety requirements

1.1 This document specifies the electrical requirements for the design of automatic electrostatic application systems for liquid coating materials which can be ignited in an atomised state, used within a temperature range from 5 °C to 40 °C. This document considers automatic electrostatic application systems for processing ignitable liquid coating materials, where the conductivity of the complete system is limited up to 50 nS/cm. Together with additional measures like e.g. potential separation systems, these requirements can also be applied to ignitable liquid coating materials, where the conductivity of the complete system is limited up to 2 000 μS/cm. Ignition hazards related to the generated explosive atmosphere and the protection of persons against electric shock are considered. 1.2 This document specifies requirements for interfaces to and additional requirements for machinery according to EN 16985:2018, prEN 12621:2020 and prEN 1953:2020. 1.3 This document also specifies requirements for a safe operation of electrostatic application systems, including the electrical installation. The requirements consider both the processing of coating materials and the cleaning and purge processes. 1.4 This document considers three types of spraying systems; see 5.1. Spraying systems are classified as equipment of group II, category 2G or category 3G. Only electrostatic spraying systems operating with a d.c. sinusoidal ripple of not more than 10 % of the r.m.s. value are considered. 1.5 For electrostatic spraying equipment used in food and pharmaceutical industry, additional requirements could apply. 1.6 This document is not applicable to: — liquid electrostatic application equipment for non ignitable liquid coating material, see EN 50348:2010 ; — electrostatic hand-held spraying equipment, see EN 50050 1:2013, EN 50050 2:2013 and EN 50050 3:2013 as well as prEN 50059:2021; — potential separation systems; — cleaning systems for spraying devices; — selection, installation and application of other electrical and non-electrical equipment in areas with explosion hazard, see EN 60079 14:2014 and EN 16985:2018; — quality assurance systems for electrostatic spraying equipment (see EN ISO/IEC 80079 34:2020, ZB.11). 1.7 This document is not applicable to equipment manufactured before the date of its publication as a European Standard.

Automatische elektrostatische Beschichtungssysteme für entzündbare Beschichtungsstoffe - Sicherheitsanforderungen

1.1 Dieses Dokument legt elektrische Anforderungen für die Konstruktion automatischer elektrostatischer Sprühsysteme zur Verarbeitung flüssiger Beschichtungsstoffe fest, die im zerstäubten Zustand entzündbar sind und in einem Temperaturbereich zwischen 5°C und 40°C verwendet werden. Diese Norm behandelt automatische elektrostatische Beschichtungsstoffe, bei denen die Leitfähigkeit des Gesamtsystems auf bis zu 50 nS/cm begrenzt ist. Zusammen mit zusätzlichen Maßnahmen wie z.B. Potentialtrennsystemen können diese Anforderungen auch auf entzündbare flüssige Beschichtungsstoffe angewandt werden, bei denen die Leitfähigkeit des Gesamtsystems auf bis zu 2 000 μS/cm begrenzt ist. Dabei werden Zündgefahren für die entstehende explosionsfähige Atmosphäre und der Schutz von Personen gegen elektrischen Schlag berücksichtigt. 1.2 Dieses Dokument legt Anforderungen an Schnittstellen zu Maschinen nach EN 16985:2018, EN 12621:2021 and EN 1953:2021 sowie zusätzliche Anforderungen an diese Maschinen fest. 1.3 Dieses Dokument legt auch die Anforderungen für den sicheren Betrieb elektrostatischer Sprühsysteme einschließlich der elektrischen Installationen fest. Die Anforderungen berücksichtigen neben der Verarbeitung von Beschichtungsstoff auch Reinigungs- und Spülprozesse. 1.4 Dieses Dokument berücksichtigt drei Typen von Sprühsystemen, siehe 5.1. Sprühsysteme gelten als Geräte der Gruppe II, Kategorie 2G oder Kategorie 3G. Es werden nur elektrostatische Sprühsysteme mit Gleichstrom mit einer sinusförmigen Welligkeit von höchstens 10 % des Effektivwertes berücksichtigt. 1.5 Für elektrostatische Sprühsysteme in der Nahrungsmittel- und Pharmaindustrie können zusätzliche Anforderungen gelten. 1.6 Dieses Dokument gilt nicht für - elektrostatische Sprühsysteme für nichtentzündbare flüssige Beschichtungsstoffe, siehe EN 50348:2010 + Cor.:2010; - elektrostatische Handsprüheinrichtungen, siehe EN 50050:2013 Teile 1 bis 3, und EN 50059:2021; - Potenzialtrennsysteme; - Reinigungssysteme für Sprüheinrichtungen; - Auswahl, Errichtung und Anwendung von anderen elektrischen und nicht elektrischen Betriebsmitteln in explosionsgefährdeten Bereichen, siehe EN 60079-14:2014 und EN 16985:2018; - Qualitätssicherungssysteme für elektrostatische Sprühsysteme (siehe EN ISO/IEC 80079-34:2020, Anhang ZB 11). 1.7 Diese Europäische Norm gilt nicht für Einrichtungen, die vor dem Datum ihrer Veröffentlichung als Europäische Norm hergestellt wurden.

Systèmes automatiques d’application électrostatique de matériaux de revêtement inflammables - Exigences de sécurité

1.1 Le présent document spécifie les exigences électriques pour la conception des systèmes automatiques d’application électrostatique de matériaux liquides de revêtement qui peuvent être enflammés lorsqu’ils sont pulvérisés, utilisés dans une plage de température de 5 °C à 40 °C. Le présent document traite des systèmes automatiques d’application électrostatique pour l’application de matériaux liquides de revêtement inflammables pour lesquels la conductivité de l’ensemble du système est limitée à 50 nS/cm. Outre des mesures supplémentaires, par exemple des systèmes de séparation de potentiel, ces exigences peuvent également s’appliquer aux matériaux liquides de revêtement inflammables, si la conductivité de l’ensemble du système est limitée à 2 000 μS/cm. Les risques d’inflammation relatifs à l’atmosphère explosive générée et la protection des personnes contre les chocs électriques sont traités. 1.2 Le présent document spécifie les exigences relatives aux interfaces et les exigences supplémentaires relatives aux machines conformément à l’EN 16985:2018, au prEN 12621:2020 et au prEN 1953:2020. 1.3 Le présent document spécifie également des exigences relatives au fonctionnement sûr des systèmes d’application électrostatique, y compris leur installation électrique. Les exigences portent à la fois sur le traitement des matériaux de revêtement et sur les processus de nettoyage et de purge. 1.4 Le présent document traite de trois types de systèmes de projection, voir 5.1. Les systèmes de projection sont classés comme appareil de Groupe II, catégorie 2G ou catégorie 3G. Seuls les systèmes de projection électrostatique fonctionnant avec une ondulation sinusoïdale en courant continu ne dépassant pas 10 % de la valeur efficace sont concernés. 1.5 Pour les appareils de projection électrostatique utilisés dans l’industrie alimentaire et dans l’industrie pharmaceutique, des exigences supplémentaires peuvent s’appliquer. 1.6 Le présent document n’est pas applicable: - aux appareils de projection électrostatique de matériau liquide de revêtement ininflammable, voir EN 50348:2010 1; - aux matériels manuels de projection électrostatique, voir EN 50050-1:2013, EN 50050-2:2013 et EN 50050-3:2013, ainsi que prEN 50059:2021; - aux systèmes de séparation de potentiel; - aux systèmes de nettoyage pour dispositifs de projection; - à la sélection, à l’installation et à l’application des autres appareils électriques ou non électriques dans les emplacements à risque d’explosion, voir EN 60079-14:2014 et EN 16985:2018; - aux systèmes d’assurance qualité pour les appareils de projection électrostatique (voir EN ISO/IEC 80079-34:2020, ZB.11). 1.7 Le présent document ne s’applique pas aux appareils fabriqués avant la date de sa publication en tant que Norme européenne.

Avtomatska oprema za elektrostatični nanos vnetljivih premazov - Varnostne zahteve

General Information

• Status: Not Published
• ICS: 87.100 - Paint coating equipment
• Technical Committee: CLC/SC 31-8 - Electrostatic painting and finishing equipment
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 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)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Mandate: M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: oSIST prEN 50176:2021 - Automatic electrostatic application systems for ignitable coating materials - Safety requirements

Relations

• Revised: EN 50176:2009 - Stationary electrostatic application equipment for ignitable liquid coating material - Safety requirements
• Effective Date: 10-Mar-2020

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 50176:2021
01-maj-2021
Avtomatska oprema za elektrostatični nanos vnetljivih premazov - Varnostne
zahteve

Automatic electrostatic application systems for ignitable coating materials - Safety

requirements
Automatische elektrostatische Beschichtungssysteme für entzündbare
Beschichtungsstoffe - Sicherheitsanforderungen

Systèmes automatiques de projection électrostatique de produit liquide de revêtement

inflammable - Exigences de sécurité
Ta slovenski standard je istoveten z: prEN 50176
ICS:
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
87.100 Oprema za nanašanje Paint coating equipment
premazov
oSIST prEN 50176:2021 en,fr,de

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

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oSIST prEN 50176:2021
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oSIST prEN 50176:2021
EUROPEAN STANDARD DRAFT
prEN 50176
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS Will supersede EN 50176:2009 and all of its
amendments and corrigenda (if any)
English Version
Automatic electrostatic application systems for ignitable coating
materials - Safety requirements

Systèmes automatiques de projection électrostatique de Automatische elektrostatische Beschichtungssysteme für

produit liquide de revêtement inflammable - Exigences de entzündbare Beschichtungsstoffe -

sécurité Sicherheitsanforderungen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2021-06-04.
It has been drawn up by CLC/SC 31-8.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Project: 71657 Ref. No. prEN 50176 E
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Contents Page

European foreword .................................................................................................................................... 4

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

3.1 Terms and definitions .................................................................................................................. 9

3.2 List of abbreviations ...................................................................................................................12

4.1 Explosion hazards ......................................................................................................................13

4.2 Electric hazards ..........................................................................................................................13

5.1 Requirements for spraying systems depending on the type .................................................14

5.1.1 General .........................................................................................................................................14

5.1.2 Requirements for ignition protection .......................................................................................14

5.1.3 Prevention of hazardous discharges ........................................................................................15

5.1.4 Prevention of hazardous discharges during rinsing and cleaning processes ....................15

5.1.5 Automatic fire extinguishing system ........................................................................................16

5.1.6 Prevention of electric shock ......................................................................................................16

5.2 Requirements for all types of spraying systems.....................................................................18

5.2.1 Definition of safety relevant values ..........................................................................................18

5.2.2 Reliability of parts under high voltage .....................................................................................18

5.2.3 High-voltage cables ....................................................................................................................18

5.2.4 Minimum distances to live parts ...............................................................................................18

5.2.5 Electrical safety ..........................................................................................................................18

5.2.6 Maximum surface temperature .................................................................................................18

5.2.7 Safeguard against unauthorised switch-on and switch-off ...................................................18

5.2.8 Safeguard against modification of safety relevant parameters .............................................19

5.3 Coating material supply system ...............................................................................................19

5.3.1 General .........................................................................................................................................19

5.3.2 Requirements for ignition protection .......................................................................................19

5.3.3 Prevention of hazardous discharges ........................................................................................19

5.3.4 Hose to the material supply under high voltage .....................................................................19

5.3.5 Cleaning of coating material supply pipes and hoses ...........................................................19

5.3.6 Cleaning of insulating coating material supply pipes and hoses with a cleaning liquid-air-

mixture .........................................................................................................................................19

5.4 Requirements for the control system .......................................................................................20

5.4.1 General .........................................................................................................................................20

5.4.2 Requirements for control systems of category 3G .................................................................20

5.5 Environment in which the application system is used ...........................................................21

5.5.1 General .........................................................................................................................................21

5.5.2 Measures against high-energy discharges ..............................................................................21

5.5.3 Lock of openings ........................................................................................................................21

5.5.4 Indication of high voltage ..........................................................................................................21

5.5.5 Earthing .......................................................................................................................................21

6.1 Tests depending on the type of spraying systems .................................................................21

6.1.1 General .........................................................................................................................................21

6.1.2 Ignition protection ......................................................................................................................21

6.1.3 Hazardous discharges ...............................................................................................................21

6.1.4 Hazardous discharges during rinsing and cleaning processes ............................................22

6.1.5 Automatic fire extinguishing system (routine test) ................................................................22

6.1.6 Prevention of electric shock ......................................................................................................22

6.2 Tests for all types of spraying systems ...................................................................................22

6.2.1 Measurement of safety relevant values (routine test) ............................................................22

6.2.2 Test of the reliability (type test).................................................................................................23

6.2.3 Tests of the high-voltage cables (type test) .............................................................................23

6.2.4 Minimum distances of live parts (routine test) ........................................................................23

6.2.5 Electrical safety (type test) ........................................................................................................23

6.2.6 Maximum surface temperature (type test) ...............................................................................23

6.2.7 Safeguard against unauthorised switch-on (type test) ..........................................................23

6.2.8 Safeguard against modification of safety relevant parameters (type test) ..........................23

6.3 Test of the coating material supply system .............................................................................23

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6.3.1 General ........................................................................................................................................ 23

6.3.2 Tests of ignition protection (type test) ..................................................................................... 23

6.3.3 Tests of measures preventing hazardous discharges (type test) ......................................... 23

6.3.4 Test of the coating material supply hose with material under high voltage (type test) ...... 24

6.3.5 Tests of safety of cleaning procedure (type test) ................................................................... 24

6.3.6 Tests of safety of cleaning procedure for pipes and hoses with a cleaning liquid-air-mixture

(type test) .................................................................................................................................... 24

6.4 Test of the control system ......................................................................................................... 24

6.4.1 General (routine test) ................................................................................................................. 24

6.4.2 Test for control systems of category 3G (type test) ............................................................... 24

6.5 Test of requirements on the environment ............................................................................... 24

6.5.1 General ........................................................................................................................................ 24

6.5.2 Measures against high-energy discharges.............................................................................. 24

6.5.3 Guards on openings ................................................................................................................... 24

6.5.4 Indication of high voltage .......................................................................................................... 24

6.5.5 Earthing ....................................................................................................................................... 24

7.1 General ........................................................................................................................................ 25

7.2 Instruction for use ...................................................................................................................... 25

7.2.1 General ........................................................................................................................................ 25

7.2.2 Information on installation ........................................................................................................ 25

7.2.3 Information on operation ........................................................................................................... 25

7.2.4 Cleaning, maintenance, and corrective maintenance ............................................................ 26

7.2.5 Test intervals .............................................................................................................................. 26

7.3 Marking ........................................................................................................................................ 27

7.3.1 General ........................................................................................................................................ 27

7.3.2 Spraying devices as ATEX equipment of category 3 ............................................................. 27

7.3.3 Spraying devices as ATEX equipment of category 2 ............................................................. 27

7.3.4 Control systems as ATEX equipment without own category connected to products of

category 2 .................................................................................................................................... 28

7.3.5 Control systems as ATEX equipment of category 3 connected to products of

category 2 .................................................................................................................................... 28

7.3.6 Multiple Marking of the control systems.................................................................................. 28

7.3.7 Example for markings of spraying device excluding a control system (informative) ........ 29

7.3.8 Examples for markings of control systems (informative) ...................................................... 29

Annex A (normative) Test for ignition protection using shunt and oscilloscope for L-1 spraying

systems including parts of the coating material supply system .......................................... 30

Annex B (normative) Ignition test within the gas mixture for L-1 spraying systems including parts

of the coating material supply system ..................................................................................... 32

Annex C (normative) Compliance with area I for L-2 spraying systems including parts of the

coating material supply system ................................................................................................ 34

Annex D (informative) Example for discharge measurement ............................................................ 40

Annex E (normative) Test procedure for the prevention of hazardous discharges of spraying

systems including parts of coating material supply system (routine test) .......................... 42

Annex F (informative) Ignitability of coating materials ...................................................................... 44

Annex ZZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2006/42/EC aimed to be covered .................................................. 45

Annex ZZB (informative) Relationship between this European standard and the essential

requirements of Directive 2014/34/EU ...................................................................................... 47

Bibliography ............................................................................................................................................. 49

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oSIST prEN 50176:2021
prEN 50176:2021 (E)
European foreword

This document (prEN 50176:2021) has been prepared by CLC/TC 31/SC 31-8 “Electrostatic painting and

finishing equipment” of CLC/TC 31 “Electrical apparatus for potentially explosive atmospheres”.

This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)

This document will supersede EN 50176:2009 and all of its amendments and corrigenda (if any).

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) 2006/42/EC and

2014/34/EU.

For the relationship with EU Directive(s) see informative Annexes ZZA and ZZB, which are an integral part of

this document.

prEN 50176:2021 includes the following significant technical changes with respect to EN 50176:2009:

— modification of the title of the document;
— new arrangement and new designation of the types of spray systems;

— new arrangement and amendments of the requirements for automatic spraying equipment for ignitable

liquid coating materials;

— introduction of requirements about non-electric ignition sources of spraying systems

— definition of requirements for safety functions;

— new arrangement and amendment of tests for automatic spraying equipment for ignitable liquid coating

materials;
— new arrangement and extension of the information for use;
— definition of requirements for repeated tests;

— introduction of the normative Annex A “Test for ignition protection using shunt and oscilloscope for L-1

spraying systems including parts of the coating material supply system”;

— introduction of the normative Annex B “Ignition test within the gas mixture for L-1 spraying systems including

parts of the coating material supply system”;
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— introduction of the normative Annex C “Compliance with area I for L-2 spraying systems including parts of

the coating material supply system”;
— introduction of the informative Annex D “Example for discharge measurement”;

— introduction of the normative Annex E “Test procedure for the prevention of hazardous discharges of

spraying systems including parts of coating material supply system (routine test)”;

— introduction of the revised informative Annex F “Ignitability of coating materials”.

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oSIST prEN 50176:2021
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Introduction

During the electrostatic coating process, the ignitable liquid coating material is transported to a spraying device

where it is atomised by mechanical forces and/or by the influence of an electric field. The generated spray cloud

is charged by high voltage of some 10 kV, is attracted by and is applied to the earthed workpiece.

Spray clouds which are not applied to the workpiece (overspray) are removed by a suction device or by other

means.
The coating material is cured at room temperature or by heating.
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oSIST prEN 50176:2021
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1 Scope

1.1 This document specifies the electrical requirements for the design of automatic electrostatic application

systems for liquid coating materials which can be ignited in an atomised state, used within a temperature range

from 5 °C to 40 °C.

This document considers automatic electrostatic application systems for processing ignitable liquid coating

materials, where the conductivity of the complete system is limited up to 50 nS/cm. Together with additional

measures like e.g. potential separation systems, these requirements can also be applied to ignitable liquid

coating materials, where the conductivity of the complete system is limited up to 2 000 μS/cm.

Ignition hazards related to the generated explosive atmosphere and the protection of persons against electric

shock are considered.

1.2 This document specifies requirements for interfaces to and additional requirements for machinery

according to EN 16985:2018, prEN 12621:2020 and prEN 1953:2020.

1.3 This document also specifies requirements for a safe operation of electrostatic application systems,

including the electrical installation. The requirements consider both the processing of coating materials and the

cleaning and purge processes.
1.4 This document considers three types of spraying systems; see 5.1.

Spraying systems are classified as equipment of group II, category 2G or category 3G.

Only electrostatic spraying systems operating with a d.c. sinusoidal ripple of not more than 10 % of the r.m.s.

value are considered.

1.5 For electrostatic spraying equipment used in food and pharmaceutical industry, additional requirements

could apply.
1.6 This document is not applicable to:

— liquid electrostatic application equipment for non ignitable liquid coating material, see EN 50348:2010 ;

— electrostatic hand-held spraying equipment, see EN 50050-1:2013, EN 50050-2:2013 and

EN 50050-3:2013 as well as prEN 50059:2021;
— potential separation systems;
— cleaning systems for spraying devices;

— selection, installation and application of other electrical and non-electrical equipment in areas with explosion

hazard, see EN 60079-14:2014 and EN 16985:2018;

— quality assurance systems for electrostatic spraying equipment (see EN ISO/IEC 80079-34:2020, ZB.11).

1.7 This document is not applicable to equipment manufactured before the date of its publication as a

European Standard.
As impacted by EN 50348:2010/COR1:2010.
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2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references, the

latest edition of the referenced document (including any amendments) applies.

prEN 1953:2020, Application equipment for coating materials - Safety requirements

prEN 12621:2020, Machinery for supply and circulation of liquid coating materials - Safety requirements

EN 16985:2018, Spray booths for organic coating material - Safety requirements

EN 50050-1:2013, Electrostatic hand-held spraying equipment - Safety requirements - Part 1: Hand-held

spraying equipment for ignitable liquid coating materials

EN 50050-2:2013, Electrostatic hand-held spraying equipment - Safety requirements - Part 2: Hand-held

spraying equipment for ignitable coating powder

EN 50050-3:2013, Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held

spraying equipment for ignitable flock

prEN 50059:2021, Electrostatic hand-held spraying equipment - Safety requirements - Hand-held spraying

equipment for non-ignitable coating materials

prEN 50176:2021, Automatic electrostatic application systems for ignitable coating materials - Safety

requirements

EN 50177:2009, Stationary electrostatic application equipment for ignitable coating powders - Safety

requirements

EN 50223:2010, Stationary electrostatic application equipment for non-ignitable liquid coating material - Safety

requirements

EN 50348:2010, Stationary electrostatic application equipment for non-ignitable liquid coating material - Safety

requirements

EN 60204-1:2018, Safety of machinery - Electrical equipment of machines - Part 1: General requirements (IEC

60204 1:2016, modified)

EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)

EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction

(ISO 12100:2010)

EN ISO 12100 (series), Safety of machinery - Basic concepts, general principles for design (ISO 12100 series)

EN ISO 20344:2011, Personal protective equipment - Test methods for footwear (ISO 20344:2011)

As impacted by EN 50177:2009/A1:2012.
As impacted by EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013.
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3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1.1
application system

automatic electrostatic application system in which the spraying device is either fixed stationary (e.g. on

supports) and is operated automatically or is guided by reciprocators (e.g. robots) and generally comprises the

following:
— spraying system;
— fire prevention and protection equipment;
— coating material supply system
3.1.2
spraying system

devices for application of liquid coating material by means of electrostatic charge and generally comprises the

following:
— spraying device;
— high-voltage supply system;
— control system

Note 1 to entry: The term 'spraying system' is a synonym to the terms 'applicator' of EN 50050-1:2013 and 'automatic

electrostatic application equipment' of prEN 1953:2020.

Note 2 to entry: The high-voltage supply system may be an integral part of the control system.

3.1.3
spraying device

device with high-voltage electrode for atomising and charging the coating material and, if applicable, supplying

atomising air and shaping air

Note 1 to entry: Typical designs are nozzles or rotating discs, or bell-shaped devices.

Note 2 to entry: the high-voltage electrode may be a needle or a solid part which is on high-voltage potential.

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3.1.4
high-voltage supply system
In general, the system comprises the following:

— low-voltage section with devices for switching on and off the unit and for adjustment, control, regulation,

limitation and monitoring of current and voltage, as well as the required connecting cables;

— high-voltage generator;
— high-voltage switching device;
— high-voltage cable;
— high-voltage plug-and-socket connector
3.1.5
coating material supply system

system, comprising components for supplying the spraying system with coating material, like e.g:

— pressurized or depressurised containers,
— pumps,
— controllers and valves,
— ducts and hoses
3.1.6
hazardous discharge

discharge which generates the hazard of ignition of explosive mixtures or of electric shock

3.1.7
workpiece
article to which the coating material is applied
3.1.8
non-ignitable coating materials
substances, especially varnishes which cannot be ignited in sprayed state

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 F.
3.1.9
ignitable coating materials

sprayed materials, especially varnishes which can be ignited in sprayed state and 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 F.
3.1.10
explosive atmosphere

mixture of air, under atmospheric conditions, and 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 1127-1:2019.
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oSIST prEN 50176:2021
prEN 50176:2021 (E)
3.1.11
discharge energy

energy, transferred charge, body current and pulse duration that become free from a part of the installation in

form of a spark which could cause both electric shock to a person and/or an ignition of an explosiv

...