EN 50050-1-2013 en Electrostatic hand-held spraying equipment - Safety requirements - Part 1 Hand-held spraying equipment for ignitable liquid coating materials.pdf

1、BSI Standards PublicationBS EN 50050-1:2013Electrostatic hand-heldspraying equipment Safetyrequirements -Part 1: Hand-held spraying equipment forignitable liquid coating materialsBS EN 50050-1:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50050-1:2013. To

2、gether with BS EN 50050-2:2013 and BS EN 50050-3:2013 it supersedes BS EN 50050:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EXL/31/-/1, Electrostatic spray guns.A list of organizations represented on this committee can be obtained on request t

3、o its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 75855 3ICS 29.260.20; 87.100Compliance with a Briti

4、sh Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2014.Amendments/corrigenda issued since publicationDate Text affectedBS EN 50050-1:2013EUROPEAN STANDARD EN 50050-1 NORME EUROP

5、ENNE EUROPISCHE NORM November 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploita

6、tion in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50050-1:2013 E 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 ma

7、terials Equipement manuel de projection lectrostatique - Exigences de scurit - Partie 1 : Equipement manuel de projection de liquides de revtement inflammable Elektrostatische Handsprheinrichtungen - Sicherheitsanforderungen - Teil 1: Handsprheinrichtungen fr entzndbare flssige Beschichtungsstoffe T

8、his 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 r

9、eferences 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

10、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

11、 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. BS EN 50050-1:2013Contents Page Forewor

12、d . 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 ac

13、cessories . 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 sprayin

14、g 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 (informat

15、ive) 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-base

16、d 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 Ex

17、ample of a test arrangement 21 Tables EN 50050-1:2013BS EN 50050-1:2013Table 1 Test intervals. 17 Table D.1 Requirements for ionisators 25 EN 50050-1:2013BS EN 50050-1:2013Foreword This document (EN 50050-1:2013) has been prepared by SC 31-8, “Electrostatic painting and finishing equipment“, of CLC/

18、TC 31, “Electrical apparatus for potentially explosive atmospheres“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-10-14 latest date by which the national standar

19、ds conflicting with this document have to be withdrawn (dow) 2016-10-14 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/o

20、r 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

21、 Directive(s) see informative Annex ZZ, which is an integral part of this document. EN 50050-1:2013BS EN 50050-1:20130 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 mecha

22、nical 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 (o

23、verspray) 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 spra

24、yed 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 le

25、ast 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 concentr

26、ation 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 th

27、e 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, f

28、or instance, by contact with null live parts, which are not insulated for operational reasons, null conductive parts, which are not connected to dangerous voltage during normal operation, but only in case of failure, null insulated live parts with insufficient or damaged insulation due to external i

29、mpact. 0.3.2 Inadequate earthing may occur, for instance, due to null faulty connections to the protective earthing system, null 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

30、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

31、 they are backed with conductive material. EN 50050-1:2013BS EN 50050-1:20131 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

32、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 b

33、y 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 ex

34、plosion 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 catego

35、ry 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 e

36、quipment 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, e

37、xplosion, 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 f

38、or 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

39、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

40、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

41、 of a voltage drop at the charging electrode. EN 50050-1:2013BS EN 50050-1:20132 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

42、 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 Coati

43、ng 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

44、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 eq

45、uipment 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-

46、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 Safe

47、ty-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) EN 50050-1:2013BS EN 50050-1:20133 Terms and definitions For the purposes of this document, the following terms and definitions app

48、ly. 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 inte

49、gral 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,