1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50348:2010Stationary electrostatic application equipment for non-ignitable liquid coating material Safety r e q u i r e m e n t sBS EN 50348:2010 BRITISH STANDARDNational f
2、orewordThis British Standard is the UK implementation of EN 50348:2010. It supersedes BS EN 50348:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/31/-/18, Electrostatic spray guns.A list of organizations represented on this committee can be ob
3、tained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 56943 2 ICS 25.220.20 Compliance with a British Standard cannot confer immunity from legal obligation
4、s.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 50348:2010EUROPEAN STANDARD EN 50348 NORME EUROPENNE EUROPISCHE NORM February 2010 CENELEC European Committee
5、for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr 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
6、. Ref. No. EN 50348:2010 E ICS 87.100 Supersedes EN 50348:2001English version Stationary electrostatic application equipment for non-ignitable liquid coating material - Safety requirements Matriel fixe de projection lectrostatique de produit projeter liquide inflammable - Exigences de scurit Station
7、re Ausrstung zum elektrostatischen Beschichten mit nichtentzndbaren flssigen 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
8、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 offici
9、al 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 commit
10、tees 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
11、the United Kingdom. BS EN 50348:2010EN 50348:2010 - 2 - 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
12、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 fix
13、ed: 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 prepar
14、ed 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”. _ BS
15、 EN 50348:2010- 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 equipment10 5.1 Electrostatic spraying systems 10 5.2 Requirements for spraying sy
16、stems for non-ignitable liquid coating material .10 5.3 Spraying area.11 5.4 High voltage supply11 5.5 Electric requirements .12 5.6 Grounding measures .12 5.7 Supply for coating material 12 6 Testing13 6.1 Type tests of the high voltage cables 13 6.2 Type tests of the insulating spraying material s
17、upply hose .13 6.3 Routine tests of the stationary equipment .13 7 Information for use .15 7.1 General 15 7.2 Instruction manual15 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
18、 and EN 50348:2001 20 Annex ZZ (informative) Coverage of Essential Requirements of EC Directive 2006/42/EC 21 Bibliography22 Tables Table 1 Electrostatic spraying systems for non-ignitable coating material Fields of application 10 Table 2 Requirements for electrostatic spraying systems for non-ignit
19、able liquid coating material.10 Table 3 Survey of the tests14 Table 4 Test intervals 16 BS EN 50348:2010EN 50348:2010 - 4 - 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 drop
20、lets 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
21、 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
22、 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 Par
23、ticular 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 sprayi
24、ng 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 indirec
25、t 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 dama
26、ged 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
27、 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
28、 or by large insulating surfaces, especially if they are backed with conductive material. BS EN 50348:2010- 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 gener
29、ate 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 th
30、e 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 electrostati
31、c 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, hazardou
32、s 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 reference
33、s 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 - Deter
34、mination 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 eq
35、uipment - 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
36、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
37、-1: Standard test methods for specific applications - Electrical resistance of floor coverings and installed floors (IEC 61340-4-1:2003) EN 61508-3; Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (IEC 61508-3) EN 62061:2005,
38、Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems (IEC 62061:2005) BS EN 50348:2010EN 50348:2010 - 6 - EN ISO 11688-1:1998, Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planni
39、ng (ISO/TR 11688-1:1995) EN ISO 12100-1:2003, Safety of machinery - Basic concepts, general principles for design - Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles (ISO 1
40、2100-2:2003) EN ISO 13849-1:2008, Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design (ISO 13849-1:2006) EN ISO 20344:2004, Personal protective equipment - Test methods for footwear (ISO 20344:2004) 3 Definitions For the purposes of this document, th
41、e following terms and definitions apply. 3.1 stationary electrostatic application equipment for non-ignitable liquid coating material equipment in which the electrostatic spraying system is either fixed stationary (e. g. on supports) and is operated automatically or is guided by reciprocators (e. g.
42、 robots). In general, the equipment comprises the following: spray booth; spraying area; spraying system; fixtures for workpieces; conveyors; grounding system; forced ventilation 3.2 spraying system devices for application of liquid coating material by means of electrostatic charge. In general, the
43、spraying system consists of the following components: device for the supply of coating material; high voltage electrode; high voltage supply system; spraying device 3.3 high voltage supply system system consisting generally of the following components: low voltage section with devices for switching
44、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 BS EN 50348:2010- 7 - EN 50348:2
45、010 3.4 spraying area area, closed or not, in which the coating material is applied to the workpiece by the electrostatic spraying system 3.5 dangerous discharge discharge which generates a fire hazard and/or a hazard of electric shock 3.6 workpiece article to which the coating material is applied 3
46、.7 ignitable liquid coating materials 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 A formula for the estimation of the ignitability o
47、n the basis of the composition of the coating material is given in Annex A. 3.8 hard to ignite liquid coating materials sprayed materials, especially varnishes, which could be ignited by an effective ignition source with an energy of 2 J or above and which continue to burn after the ignition source
48、has been removed, or may react in the form of an explosion NOTE A formula for the estimation of the ignitability on the basis of the composition of the coating material is given in Annex A. 3.9 non-ignitable liquid coating materials sprayed materials, especially varnishes, which could not be ignited
49、 by an effective ignition source with an energy of 2 J or above NOTE A formula for the estimation of the ignitability on the basis of the composition of the coating material is given in Annex A. Liquids whose composition is outside the range of the formula, e.g. chlorinated liquids, have to be tested experimentally. 3.10 discharge energy energy discharged from a conductive part of the installation in the form of a spark which could cause an electric shock to a person 3.11 antistatic footwear footwear that ha
