1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50177:2009Stationary electrostatic application equipment for ignitable coating powders Safety requirementsBS EN 50177:2009+A1:2012BS EN 50177:2009 BRITISH STANDARDNational
2、forewordThis British Standard is the UK implementation of EN 50177:2009.It supersedes BS EN 50177:2006, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/31/-/18, Electrostatic spray guns.A list of organizations represented on this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 o
3、btained 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 63213 6 ICS 87.100 Compliance with a British Standard cannot confer immunity from legal obligations.
4、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate Text affectedBS EN 50177:2009+A1:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50177:2009+A1:20
5、12. It supersedes BS EN 50177:2009, which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee EXL/31, Equipment for explosive atmospheres, to Subcommittee EXL/31/-/1, Electrostatic spray guns.A list of organizations represented on this subcommittee can be The Br
6、itish Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 78351 7ICS 87.100Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April
7、 2011.Amendments/corrigenda issued since publicationDate Text affected31 October 2012 Implementation of CENELEC amendment A1:2012: Footnote bin Table 2 deletedBS EN 50177:2009EUROPEAN STANDARD EN 50177 NORME EUROPENNE EUROPISCHE NORM October 2009 CENELEC European Committee for Electrotechnical Stand
8、ardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50177:2009 E
9、 English version Stationary electrostatic application equipment for ignitable coating powders - Safety requirements Matriels stationnaires de projection lectrostatique de poudres de revtement inflammables - Exigences de scurit Stationre Ausrstung zum elektrostatischen Beschichten mit entznbaren Besc
10、hichtungspulvern - Sicherheitsanforderungen This European Standard was approved by CENELEC on 2009-09-01. 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 alter
11、ation. 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 tr
12、anslation 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, Cyprus, the Czech Republic, Denmark, Estonia,
13、 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. ICS 87.100 Supersedes EN 50177:2006 + corr. Oct. 2007EN 50177:2009+A1A
14、ugust 2012BS EN 50177:2009EN 50177:2009 2 Foreword This European Standard was prepared by SC 31-8, Electrostatic painting and finishing equipment, of Technical Committee CENELEC TC 31, Electrical apparatus for potentially explosive atmospheres. The text of the draft was submitted to the formal vote
15、and was approved by CENELEC as EN 50177 on 2009-09-01. This European Standard supersedes EN 50177:2006 + corrigendum October 2007. 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 (d
16、op) 2010-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-09-01 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 E
17、C Directive 94/9/EC. See Annex ZZ. CENELEC/TC 31 as the responsible committee has concluded that this new edition of EN 50177 does not contain substantial changes regarding the ESRs. The State of the Art is included in Annex ZY “Significant changes between this European Standard and EN 50177:2006”.
18、_ EN 50177:2009/A1:2012 2 Foreword This document (EN 50177:2009/A1:2012) has been prepared by CLC/SC 31-8 “Electrostatic painting and finishing equipment“ of CLC/TC 31 “Electrical apparatus for potentially explosive atmospheres“. The following dates are fixed: latest date by which this document has
19、to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-07-23 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2015-07-23 Foreword to amendment A1BS EN 50177:2009+A1:2012EN 50177:2009+A1:20
20、12BS EN 50177:2009 3 EN 50177:2009 Contents 0 Introduction 4 0.1 Process .4 0.2 Explosion hazards .4 0.3 Electric hazards .4 1 Scope 6 2 Normative references 6 3 Definitions 7 4 General requirements 10 5 Requirements for the equipment .11 5.1 Electrostatic spraying systems 11 5.2 Requirements for sp
21、raying systems of category 3D .11 5.3 Special requirements for spraying systems of category 2D 13 5.4 Spraying area 13 5.5 High voltage supply .13 5.6 Electric requirements 14 5.7 Grounding measures .14 6 Testing .14 6.1 Tests of the high voltage cables 14 6.2 Tests of the stationary equipment .15 6
22、.3 Specific test requirements for spraying systems of type B-P, type C-P category 2D 16 7 Information for use 17 7.1 General17 7.2 Instruction manual .18 7.3 Marking .19 7.4 Warning sign .21 Bibliography 22 Annex ZY (informative) Significant changes between this European Standard and EN 50177:2006 2
23、3 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives .24 Figures Figure 1 Test assembly according to 6.3.2 17 Tables Table 1 Electrostatic spraying systems for ignitable coating powders Fields of application .11 Table 2 Requirements for electrostatic spraying systems of categ
24、ory 3D for ignitable coating powders .11 Table 3 Survey of tests 15 Table 4 Test intervals 19 BS EN 50177:2009+A1:2012EN 50177:2009+A1:2012BS EN 50177:2009EN 50177:2009 4 0 Introduction 0.1 Process During the electrostatic coating process the coating powder is transported in an air stream from a pow
25、der hopper up to an electrostatic spraying device. As the powder particles flow through the spraying device they are electrostatically charged by means of a high voltage of the order of some tens of kilovolts and ejected in the form of a cloud which is directed towards the workpiece. The charged par
26、ticles of the cloud are attracted by and applied to the earthed workpiece. Powder, that is not applied to the workpiece (overspray) is removed by a suction device or other means in the powder collection unit. After the coating process the workpieces are introduced into an oven where the powder is me
27、lted and cured into a coherent coating. 0.2 Explosion hazards An explosion could occur, if the concentration of coating powder in air is within the explosion limits, an ignition source of appropriate energy for this coating powder cloud is present. Ignition sources could be, for instance, a hot surf
28、ace, an open flame, an electric arc or a spark. An explosion could be prevented, if one or better both conditions are avoided. Because it is very difficult to exclude the possibility of ignitable discharges completely, the main focus should be the prevention of ignitable concentrations of coating po
29、wder in air. 0.2.1 Mixtures of ignitable coating powder and air could only explode within a given range of concentration, but not, if the concentration is above or below this range. NOTE 1 If an explosive cloud of coating powder and air is trapped into a closed room, an explosion could lead to a fat
30、al increase of pressure. NOTE 2 The particle size distribution of coating powders is usually in the range of 5 m to 120 m. 0.2.2 It is important that deposits of powder are not allowed to accumulate within the spraying areas for they may be whirled up and give rise to an explosive atmosphere. This d
31、oes not apply to deposits on filter devices and accumulations of coating powder in hoppers where filters and hoppers are integrated in the spraying area and are designed to collect the coating powder. See EN 12981:2005, 4.6. 0.2.3 Particular attention should be paid to the prevention of electrostati
32、c charges on different surfaces, which are in the vicinity of the powder cloud. This could apply to workpieces during the coating process or the reciprocating devices and the mounting parts of the powder spraying system etc. 0.3 Electric hazards 0.3.1 Electric shock (by direct or indirect contact) c
33、ould 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 in case of failure, insulated live parts whose insulation is insufficient or has been damaged due to mech
34、anical influences. BS EN 50177:2009+A1:2012EN 50177:2009+A1:2012BS EN 50177:2009 5 EN 50177:2009 0.3.2 Inadequate grounding could occur, for instance, due to faulty connections to the protective grounding system, a too high resistance to ground. 0.3.3 Hazards could occur, for instance, if hazardous
35、malfunctions (e.g. shortcut of the 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 control and safety systems. 0.3.4 Hazardous electrostatic discharges could be generated, for instan
36、ce, by non-earthed conductive components or by large insulating surfaces, especially if they are backed with conductive material. BS EN 50177:2009+A1:2012EN 50177:2009+A1:2012BS EN 50177:2009EN 50177:2009 6 1 Scope 1.1 This European Standard specifies the requirements for stationary electrostatic ap
37、plication equipment for ignitable coating powders to be used in explosive atmospheres generated by their own spray cloud. A distinction is made between spraying systems corresponding to EN 50050:2001 and spraying systems designed for higher discharge energies and/or currents. The charging of ignitab
38、le coating powder can be achieved by applying high voltage or triboelectrically. This European Standard also specifies the design-related requirements for a safe operation of the stationary equipment including its electrical installation. 1.2 This European Standard considers three types of electrost
39、atic spraying systems; see 5.1 for more details. 1.3 This European Standard deals with all hazards significant for the electrostatic spraying of coating materials, which could also contain small quantities of added metal particles, if the work is carried out under conditions recommended by the manuf
40、acturer. In particular, this includes ignition hazards resulting from the generated explosive atmosphere, and the protection of persons from electric shocks. 1.4 This stationary equipment is classified as equipment of group II, category 2D or category 3D for use in potentially explosive areas of zon
41、e 21 or 22, respectively. NOTE For other safety aspects like zone classification of the areas in and around spray booths, see EN 12981:2005, 5.6.2.3; zone classification of other areas with explosive atmosphere, see EN 60079-10-2; selection, erection and application of other electrical and non elect
42、rical equipment in areas with explosion hazard, see EN 60079-14 and EN 12981:2005, 5.6.2.4; health protection (for instance, noise) see also EN 12981:2005, 5.4 and EN 14462; cleaning of spraying areas, see instruction manual of the spraying equipment; fire prevention and protection (for instance fir
43、e hazards due to other sources) see also EN 12981:2005, 5.6; explosion protection system, see EN 12981:2005, 5.6.2.5; dust hazards, see EN 12981:2005, 5.5. Design-related measures for reducing the generation of noise of the stationary equipment for electrostatic coating are given in EN ISO 11688-1.
44、See also EN 14462. 2 Normative references The following referenced documents are incorporated 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,
45、 Resilient floor coverings Determination of the electrical resistance EN 1127-1, Explosive atmospheres Explosion prevention and protection Part 1: Basic concepts and methodology EN 1149-5, Protective clothing Electrostatic properties Part 5: Material performance and design requirements EN 12981:2005
46、, Coating plants - Spray booths for application of organic powder coating material - Safety requirements EN 13463-1, Non-electrical equipment for use in potentially explosive atmospheres Part 1: Basic method and requirements EN 13478:2001, Safety of machinery Fire prevention and protection EN 50050:
47、2001, Electrical apparatus for potentially explosive atmospheres Electrostatic hand-held spraying equipment BS EN 50177:2009+A1:2012EN 50177:2009+A1:2012BS EN 50177:2009 7 EN 50177:2009 EN 60079-0, Electrical apparatus for explosive gas atmospheres Part 0: General requirements (IEC 60079-0) EN 60204
48、-1, Safety of machinery Electrical equipment of machines Part 1: General requirements (IEC 60204-1) EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 61340-4-1, Electrostatics Part 4-1: Standard test methods for specific applications Electrical resistance of f
49、loor 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 13849-1, Safety of machinery Safety-related parts of control systems General principles for design (ISO 13849-1) EN ISO 20344, Personal protective equipment Test method for footwear (ISO 20344) 3 Definitions For the purposes of this document, the f
