EN 50348:2010

SLOVENSKI STANDARD
01-september-2010
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SIST EN 50348:2002
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Stationary electrostatic application equipment for non-ignitable liquid coating material -
Safety requirements
Stationäre Ausrüstung zum elektrostatischen Beschichten mit nichtentzündbaren
flüssigen Beschichtungsstoffen - Sicherheitsanforderungen
Matériel fixe de projection électrostatique de produit à projeter liquide inflammable -
Exigences de sécurité
Ta slovenski standard je istoveten z: EN 50348:2010
ICS:
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 50348
NORME EUROPÉENNE
February 2010
EUROPÄISCHE NORM
ICS 87.100 Supersedes EN 50348:2001

English version
Stationary electrostatic application equipment
for non-ignitable liquid coating material -
Safety requirements
Matériel fixe de projection électrostatique Stationäre Ausrüstung
de produit à projeter liquide inflammable - zum elektrostatischen Beschichten
Exigences de sécurité mit nichtentzündbaren flüssigen
Beschichtungsstoffen -
Sicherheitsanforderungen
This European Standard was approved by CENELEC on 2009-12-01. 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 Central Secretariat 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 Central Secretariat 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, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50348:2010 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 204, Safety of
electrostatic painting and finishing equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50348 on
2009-12-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
This European Standard supersedes EN 50348:2001.
The following dates were fixed:
– latest date by which the EN has to be implemented

at national level by publication of an identical
national standard or by endorsement (dop) 2010-12-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-12-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 2006/42/EC. See Annex ZZ.
The State of the Art is included in Annex ZY “Significant changes between this European Standard and
EN 50348:2001”.
__________
- 3 - EN 50348:2010
Contents
0 Introduction.4
0.1 Process .4
0.2 Fire hazards .4
0.3 Electric hazards .4
1 Scope .5
2 Normative references.5
3 Definitions.6
4 General requirements .9
5 Requirements for the equipment.10
5.1 Electrostatic spraying systems .10
5.2 Requirements for spraying systems for non-ignitable liquid coating material .10
5.3 Spraying area.11
5.4 High voltage supply.11
5.5 Electric requirements .12
5.6 Grounding measures .12
5.7 Supply for coating material .12
6 Testing.13
6.1 Type tests of the high voltage cables .13
6.2 Type tests of the insulating spraying material supply hose .13
6.3 Routine tests of the stationary equipment .13
7 Information for use .15
7.1 General .15
7.2 Instruction manual.15
7.3 Marking .16
7.4 Warning sign .17
Annex A (informative) Ignitability of water-based paints .18
Annex ZY (informative) Significant changes between this European Standard and
EN 50348:2001 .20
Annex ZZ (informative) Coverage of Essential Requirements of EC Directive 2006/42/EC .21
Bibliography.22

Tables
Table 1 – Electrostatic spraying systems for non-ignitable coating material – Fields of
application .10
Table 2 – Requirements for electrostatic spraying systems for non-ignitable liquid coating
material.10
Table 3 – Survey of the tests.14
Table 4 – Test intervals .16

0 Introduction
0.1 Process
During the electrostatic coating process the liquid coating material is transported to an electrostatic
spraying device where it is 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 grounded workpiece.
Droplets which are not applied to the workpiece (overspray) are removed by an extraction device or by
another device.
The coated workpieces are transported to dryer, where the solvent is evaporated and a dry film of coating
material is generated.
0.2 Fire hazards
0.2.1 Fire hazards can be caused by paint and varnish deposits inside the spray booth, exhaust air
ducts and filters. During operation, malfunctions or electrical faults may cause ignition of these residues.
This is especially true for spray booths where electrostatic coating takes place. The fast propagation of
the fire leads to hazards also in adjacent areas.
0.2.2 Particular attention shall be paid to the prevention of electrostatic charges on different surfaces,
which are in the vicinity of the spray cloud. This could apply to workpieces during the coating process or
the reciprocating devices and the mounting parts of the spraying system, etc.
0.2.3 When spraying non-ignitable coating material, the formation of an explosive atmosphere is not
likely to occur. Electrostatic application equipment for ignitable liquid coating materials and hard to ignite
coating materials are covered by EN 50176.
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 under dangerous voltage during normal operation, but only in case of
failure,
– insulated live parts whose insulation is insufficient or has been damaged due to mechanical
influences.
0.3.2 Inadequate grounding may occur, for instance, due to
– faulty connections to the protective grounding system,
– a too high resistance to ground (requirement as in 5.6).
0.3.3 Hazards could occur, for instance, if hazardous malfunctions (e.g. shortcut of electronic safety
circuits, of access guards to dangerous areas or of warning devices) occur due to interferences of the
high voltage equipment and the components of the control and safety systems.
0.3.4 Hazardous electrostatic discharges could be generated, for instance, by non-grounded
conductive components or by large insulating surfaces, especially if they are backed with conductive
material.
- 5 - EN 50348:2010
1 Scope
1.1 This European Standard specifies the requirements for stationary electrostatic application
equipment for non-ignitable liquid coating materials which do not generate an explosive atmosphere
inside the spraying area. A distinction is made between spraying systems corresponding to EN 50050
and spraying systems designed for higher discharge energies and/or currents.
This European Standard also specifies the design-related requirements for a safe operation of the
stationary equipment, including its electrical installations.
1.2 This European Standard considers two types of electrostatic spraying systems, see 5.1 for
more details.
1.3 Noise has not been dealt with in this standard as it is not considered to be a significant hazard
of stationary electrostatic application equipment for non-ignitable liquid coating material. For any other
health protection, see EN 12215:2004, 5.5. For fire prevention and protection (e. g. fire hazards due to
other sources), see also EN 12215:2004, 5.7.1.
This European Standard deals with all significant hazards, hazardous situations and events, which are
relevant for stationary electrostatic application equipment for non-ignitable liquid coating and cleaning
materials which do not generate an explosive atmosphere inside the spraying area, provided they are
used as intended by the manufacturer.
2 Normative references
The following referenced documents are indispensable for the application 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.
EN 1081:1998, Resilient floor coverings - Determination of the electrical resistance
EN 1149-5, Protective clothing - Electrostatic properties - Part 5: Material performance and design
requirements
EN 12215:2004, Coating plants - Spray booths for application of organic liquid coating materials - Safety
requirements
EN 14462, Surface treatment equipment - Noise test code for surface treatment equipment including its
ancillary handling equipment - Accuracy grades 2 and 3
EN 50059:1990, Specification for electrostatic hand-held spraying equipment for non-flammable material
for painting and finishing
EN 50176, Automatic electrostatic spraying installations for flammable liquid spraying material
EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
(IEC 60204-1:2005, mod.)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 61340-4-1:2004, Electrostatics - Part 4-1: Stand
...