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1、BRITISH STANDARD BS EN 50059:1991 Specification for Electrostatic hand-held spraying equipment for non-flammable material for painting and finishing This European Standard EN 50059:1990 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 200
2、6, Uncontrolled Copy, (c) BSI BS EN 50059:1991 This British Standard was published under the authority of the Board of BSI and comes into effect on 28 February 1991 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference GEL/114 Draft for comment 83/20345 DC
3、 ISBN 0 580 19324 1 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries: AustriaItaly BelgiumLuxemburg DenmarkNetherlands FinlandNorw
4、ay FrancePortugal GermanySpain GreeceSweden IcelandSwitzerland IrelandUnited Kingdom Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50059:1991 BSI 01-2000i Contents Pag
5、e Cooperating organizationsInside front cover National forewordii Text of EN 500593 National appendix NA12 National appendix NBInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50059:1991 ii BSI 01-2000 National forewor
6、d This British Standard has been prepared under the direction of the General Electrotechnical Standards Policy Committee and is the English language version of EN 50059 “Specification for electrostatic hand-held spraying equipment for non-flammable material for painting and finishing”. Cross-referen
7、ces. Where there are British Standards corresponding to IEC publications, European Standards and CENELEC Harmonization Documents quoted in this standard the relationship is given in National appendix NB. Product certification. Users of this British Standard are advised to consider the desirability o
8、f third party certification of product conformity with this British Standard based on testing and continuing surveillance, which may be coupled with assessment of a suppliers quality systems against the appropriate Part of BS 5750. Enquiries as to the availability of third party certification scheme
9、s will be forwarded by BSI to the Association of Certification Bodies. If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of Association members. A British Standard does not purport to include all the necessary provisions
10、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pa
11、ges 2 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, U
12、ncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50059 February 1990 UDC 667.661.23-83:621.319.7:620.1:614.83 Descriptors: Electrical apparatus, non-flammable spraying material, hand-held electrostatic spraying equipment, constructional requirement English version Speci
13、fication for electrostatic hand-held spraying equipment for non-flammable material for painting and finishing Spcifications pour les quipements manuels de projection lectrostatique de produits ininflammables pour peinture et finition Bestimmungen fr elektrostatische Handsprheinrichtungen fr nichtbre
14、nnbare Sprhstoffe fr Beschichtungen This European Standard was approved by CENELEC on 9 December 1986. 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 alterati
15、on. Up-to-date list 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 transl
16、ation 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland
17、, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35,
18、B-1050 Brussels 1990 Copyright reserved to CENELEC members Ref. No. EN 50059:1990 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50059:1991 BSI 01-2000 2 IEC Publications referred to in European Standard EN 50059: IEC 664:1980 and 664A
19、:1981 Insulation co-ordination within low-voltage systems including clearances and creepage distances for equipment. European Standards referred to in European Standard EN 50059: CENELEC Harmonization document referred to in European Standard EN 50059: HD 365 S3 Classification of degrees of protecti
20、on provided by enclosures IEC 529:1976 and amendments 1 and 2. Contents Page 1Scope3 2Definitions3 3Constructional requirements3 4Supply of spraying material4 5Type verifications and tests5 6Manufacturers responsibility7 7Marking7 8Instruction manual7 Annex A11 Annex B11 Figure 18 Figure 28 Figure 3
21、8 Figure 48 Figure 58 Figure 68 Figure 79 Figure 89 Figure 99 Figure 10 Example of test rig for impact test10 EN 50014:1977 (1st edition) Electrical apparatus for potentially explosive atmospheres General requirements including amendment 1 (July 1979), amendment 2 (June 1982), amendment 3 (December
22、1982), amendment 4 (December 1982) and amendment 5 (February 1986). EN 50019:1977 (1st edition) Electrical apparatus for potentially explosive atmospheres Increased safety “e” including amendment 1 (July 1979), amendment 2 (September 1983) and amendment 3 (December 1985). EN 50020:1977 (1st edition)
23、 Electrical apparatus for potentially explosive atmospheres Intrinsic safety “i” including amendment 1 (July 1979) and amendment 2 (December 1985). EN 50050:1986 (1st edition) Electrical apparatus for potentially explosive atmospheres Electrostatic hand-held spraying equipment. Licensed Copy: sheffi
24、eldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50059:1991 BSI 01-20003 1 Scope This European Standard specifies the constructional and test requirements for hand-held and hand-operated electrostatic spray guns and associated apparatus used to spray painting
25、and finishing materials which are not flammable, with respect to the protection against high voltage electric shock. NOTEThe requirements for electrostatic hand-held spray guns and associated apparatus which are only to be used for flammable spraying materials are covered in European Standard EN 500
26、50. 2 Definitions The following definitions, specific to electrostatic spray guns and associated apparatus, are applicable to this European Standard. 2.1 Hand-held electrostatic spraying equipment Equipment for producing, charging and depositing suspended particles with the assistance of electric fi
27、elds. It consists in general of the following parts: spray gun, high voltage generator, connecting cable and means of supplying spraying material. 2.1.1 spray gun the part of the electrostatic spraying equipment from which the charged spraying material emerges and which is held and operated by the h
28、and 2.1.2 high voltage electrode a conducting part of the spray gun which is at high potential and which charges the spraying material 2.1.3 high voltage generator the part of the equipment for producing the high voltage and the current required NOTEThe high voltage generator can be, in certain case
29、s, incorporated in the spray gun. 2.1.4 connecting cable all cables to the spray gun, including any necessary high voltage supply cable 2.1.5 earth terminal a terminal intended to provide means for reliable earthing for parts of an equipment 2.1.6 associated apparatus all the electrical apparatus re
30、quired to generate and control the electrostatic voltage of the spray gun 2.1.7 spraying material supply that part of the equipment which supplies the spraying material at a convenient pressure to the spray gun 2.2 workpiece the article on which the spraying material is to be deposited 2.3 non-flamm
31、able spraying material the material which is applied by means of the electrostatic hand-held spraying equipment and which cannot be ignited, when in any mixture with air, by an energy source less than 500 mJ 2.4 Umax the maximum rated voltage of the high voltage generator 2.5 functional extra-low vo
32、ltage without electrical separation a voltage which does not exceed 50 V (r.m.s.) a.c. or 120 V d.c. with a maximum ripple of 10 %, between conductors or between any conductor and earth, and the source of which has one part of the circuit connected directly to earth 2.6 touchable parts in normal use
33、 those parts of the spray gun which are permissible to handle when the spray gun is in normal use 3 Constructional requirements 3.1 General requirements Electrical apparatus for spraying non-flammable material shall comply with the requirements of this European Standard. 3.2 Mechanical requirements
34、3.2.1 The spray gun shall withstand the impact and drop tests in 5.7 and 5.8 of this European Standard. 3.2.2 The spray gun handle shall have a total surface area of at least 20 cm2, of metal or a material the maximum resistivity of which is 10 7m. This area shall be connected to the earth terminal
35、(see 3.3.2). 3.2.3 All cables shall be attached securely to the spray gun (see 5.9). Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:42:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50059:1991 4 BSI 01-2000 3.3 Electrical requirements 3.3.1 Any cable to the spray gun, other than that ca
36、rrying only functional extra-low voltage circuits without electrical separation shall include an earthed metallic screen protected by an insulating sheath. If this is not possible in the case of the high voltage cable due to design reasons, any other construction shall be tested in accordance with 5
37、.6.2. 3.3.2 All the non-current carrying conductive parts of the spray gun other than those designed to acquire a high potential shall be assembled so that they remain in electrical contact with each other. These conductive parts shall be connected to the earth terminal in the power supply of the hi
38、gh voltage generator by means of terminals of the type described in Annex A or other connections which are equally reliable. NOTE 1A method of connection between the metal parts of the spray gun and the earth terminal in the power supply of the high voltage generator is via the metallic screen refer
39、red to in 3.3.1 above. NOTE 2In the case where the generator is incorporated in the spray gun, the conductive parts of the spray gun must be efficiently connected to a good earth. 3.3.3 All the electrical components of a spray gun with the exception of the high voltage electrode shall comply with th
40、e degree of protection of IP 54 as defined in HD 365 S3. 3.3.4 The spray gun shall pass a voltage test of 1,2 Umax between the high voltage circuit and all parts of the spray gun which are touchable in normal operational use while spraying (this will require the suppression of corona current from th
41、e high voltage electrode, see 5.6.1). 3.3.5 The high voltage cable shall be capable of withstanding a voltage test of 1,5 Umax (see 5.6.2). 3.3.6 The operating trigger of the spray gun shall be biased towards the OFF position. The trigger, when released, shall switch off the high voltage supply and
42、the spraying material supply to the spray gun within 2 s. Multi outlet high voltage supplies shall not be used unless isolation for each high voltage outlet can be achieved by release of the operating switch of the spray gun connected to the outlet concerned. 3.3.7 Any current limiting resistor used
43、 in the spray gun or the associated apparatus shall be so mounted, insulated and protected that it is immune from short circuit and shall be so rated that it is undamaged when a short circuit occurs between the high voltage electrode of the spray gun and earth for 5 min. 3.3.8 Components on which sa
44、fety in respect of high voltage electric shock depends and which are built into the high voltage supply shall be connected, assembled, etc., so that the safety of the device cannot be prejudiced. 3.3.9 If Zener diodes are used to limit the high voltage, they shall be duplicated (connected in paralle
45、l). Zener diodes and components, except transformers, on which safety depends shall not be operated at more than 2/3 of their manufacturers rating under a one fault condition (refer also to 4.2 and 7.6 of EN 50020). 3.3.10 Potentiometers whose adjustment could increase the maximum tested high voltag
46、e output shall not be capable of re-adjustment. The locking of the adjustment shall be durable and permanent. 3.3.11 The maximum capacitance of the whole system, e.g. high voltage generator and its high voltage cable, spraying material container and its hoses insulated from earth, shall not exceed 2
47、 000 pF, see 5.5.4. 3.3.12 The shock current to a human being from a touchable part in normal operational use of the system, shall be limited by a limiting resistance of not less than 10 k7 per kilovolt of Umax Dependent on the design of the system this resistance can be the resistance of the sprayi
48、ng material in the hose, or a resistor in the high voltage supply lead in the spray gun or a combination of both, see Figure 1 to Figure 9. 3.3.13 The maximum energy from the whole system available in the form of an electrical discharge to a human being from a touchable part shall not exceed 350 mJ,
49、 see also 5.5.4. 3.3.14 The total direct current continuously available from a touchable part shall not exceed 2 mA. 4 Supply of spraying material 4.1 Spraying material container 4.1.1 If the container is made of conductive material it shall be provided with a means for connecting to earth (see 4.1 in Figure 1, Figure 3 and Figure 5). 4.1.2 If the container is made of non-conducting material it shall be equipped with an earthed conductive connection. This connection shall be in contact with the spraying material (see 5.2 in Figure 2 and Figure 6
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