1、BSI Standards PublicationBS EN 50050-1:2013Electrostatic hand-heldspraying equipment Safetyrequirements -Part 1: Hand-held spraying equipment forignitable liquid coating materialsCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo repro
2、duction or networking permitted without license from IHS-,-,-BS EN 50050-1:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50050-1:2013. Together with BS EN 50050-2:2013 and BS EN 50050-3:2013 it supersedes BS EN 50050:2006 which is withdrawn.The UK partici
3、pation 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 to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are res
4、ponsible 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 British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of t
5、he Standards Policy and Strategy Committee on 31 March 2014.Amendments/corrigenda issued since publicationDate Text affectedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IH
6、S-,-,-BS EN 50050-1:2013EUROPEAN STANDARD EN 50050-1 NORME EUROPENNE 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 Ma
7、rnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation 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
8、 1: Hand-held spraying equipment for ignitable liquid coating materials Equipement manuel de projection lectrostatique - Exigences de scurit - Partie 1 : Equipement manuel de projection de liquides de revtement inflammable Elektrostatische Handsprheinrichtungen - Sicherheitsanforderungen - Teil 1: H
9、andsprheinrichtungen fr entzndbare flssige Beschichtungsstoffe This 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 standar
10、d without any alteration. Up-to-date lists and bibliographical references 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
11、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, Croati
12、a, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former 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
13、 and the United Kingdom. Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 50050-1:2013Contents Page Foreword . 3 0 Introduction 5 0.1 Process . 5 0.2 Explosion h
14、azards . 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 accessories . 11 5 Tests . 12 5.1 General . 12 5.2 Gener
15、al 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 spraying equipment and associated control devices 17 Annex A
16、(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 (informative) Quality assurance systems for electrostatic spray
17、ing 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-based paints 26 E.1 General . 26 E.2 Non-ignitable 26 E.3
18、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 Example of a test arrangement 21 Tables EN 50050-1:2013C
19、opyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 50050-1:2013Table 1 Test intervals. 17 Table D.1 Requirements for ionisators 25 EN 50050-1:2013Copyright British
20、Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 50050-1:2013Foreword This document (EN 50050-1:2013) has been prepared by SC 31-8, “Electrostatic painting and finishing equipment
21、“, of CLC/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 nation
22、al standards 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. CEN
23、ELEC and/or 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 relationsh
24、ip with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. EN 50050-1:2013Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 500
25、50-1:20130 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 mechanical forces and by the influence of an electric field. During this atomising process the droplets are charg
26、ed 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 (overspray) are removed by a suction device or by other means. After the coating process the coated workpieces
27、 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 sprayed ignitable liquid coating material in air is within the explosion limits, an ignition source of appropria
28、te 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 least one condition is avoided. Because it is very difficult to exclude the possibility of ignitable discharge
29、s 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 concentration is above or below this range. NOTE If an explosive mixture of coating materials and air is trapped int
30、o 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 the vicinity of the spraying cloud. This could apply to e.g. workpieces during the coating process. Grounding
31、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, for instance, by contact with null live parts, which are not insulated for operational reasons, null conducti
32、ve 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 impact. 0.3.2 Inadequate earthing may occur, for instance, due to null faulty connections to the protective e
33、arthing 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 safety circuits) occur due to interferences of the electrostatic high voltage equipment and the components o
34、f 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 they are backed with conductive material. EN 50050-1:2013Copyright British Standards Institution Provided b
35、y IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS 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 coa
36、ting materials to be used in explosive atmospheres generated by their own 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
37、metal particles, if the work is carried out under conditions recommended by 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 equipmen
38、t of type A-L according to Table 1 of EN 50176:2009. 1.2 With regard to explosion 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, whic
39、h are intended to be used or installed in Zone 2, provide equipment category 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 t
40、he equipment itself. All other parts of hand-held electrostatic spraying equipment 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 str
41、ength, electrical hazards (apart from the electrostatic hazards), noise, explosion, 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 Anne
42、x C. 1.6 Additional requirements may be applicable to equipment designed for 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 a
43、tmosphere see EN 60079-10-1, selection, erection and application of other 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 haza
44、rds due to other sources see EN 12215, requirements for machinery for the 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
45、 to charge coating materials electrostatically may be affected as a result of a voltage drop at the charging electrode. EN 50050-1:2013Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without lice
46、nse from IHS-,-,-BS 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 references, the latest edition of the refer
47、enced 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 Coating plants Spray booths for application of or
48、ganic 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 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 equipment of machines Part 1:
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