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1、BRITISH STANDARD BS EN 60895:1997 BS 7696:1993 renumbered, incorporating Amendment No. 1 Conductive clothing for live working at a nominal voltage up to 800 kV a.c. ICS 13.340.10 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60895:19
2、97 This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 October 1993 BSI 10-1999 The following BSI references relate to the work on this sta
3、ndard: Committee reference PEL/88 Draft for comment 89/20762 DC ISBN 0 580 22304 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Power Electrical Engineering Standards Policy Committee (PEL/-) to Technical Committee PEL/88, upon which
4、the following bodies were represented: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) BECCAMA (BEAMA Electrical Cable Connector and Accessories Manufacturers Association) British Railways Board Department of Trade and Industry Department of Trade and Indus
5、try (Consumer Safety Unit, CA Division) Electricity Association Federation of British Hand Tool Manufacturers GAMBICA (BEAMA Ltd.) Industrial Safety (Protective Equipment) Manufacturers Association International Powered Access Federation National Association of Glove Manufacturers Amendments issued
6、since publication Amd. No.DateComments 9368March 1997Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60895:1997 BSI 10-1999i Contents Page Committees responsibleInside front cover National foreword
7、ii Text of EN 608955 National annex NA (informative) Cross-referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60895:1997 ii BSI 10-1999 National foreword This British Standard has been prepared by Technical Com
8、mittee PEL/78 (formerly PEL/88). It is the English language version of EN 60895:1996 Conductive clothing for live working at a nominal voltage up to 800 kV a.c., published by the European Committee for Electrotechnical Standardization (CENELEC). It was derived from IEC 895:1987, published by the Int
9、ernational Electrotechnical Commission (IEC). The graphics signs, symbols and letters used may be found in the following documents. BS 3939, Graphical symbols for electrical power, telecommunications and electronics diagrams Part 1:1986 General information, general index Part 2:1985 Symbol elements,
10、 qualifying symbols and other symbols having general application Part 3:1985 Conductors and connecting devices. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Briti
11、sh 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, pages 2 to 36, an inside back cover and a back cover. This standard has been updated (see copyright date) and may h
12、ave had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60895 June 1996 ICS 13.340.10Super
13、sedes HD 547 S1:1990 Descriptors: Live working, electrical equipment, conductive clothing, characteristic, test English version Conductive clothing for live working at a nominal voltage up to 800 kV a.c. (IEC 895:1987, modified) Vtements conducteurs pour travaux sous tension jusqu 800 kV de tension
14、nominale en courant alternatif (CEI 895:1987, modifie) Schirmende Schutzbekleidung zum Arbeiten an unter Spannung stehenden Teilen fr eine Nennspannung bis a.c. 800 kV (IEC 895:1987, modifiziert) This European Standard was approved by CENELEC on 1996-03-05. CENELEC members are bound to comply with t
15、he 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 references concerning such national standards may be obtained on application to the Central Secretariat
16、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 of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the offi
17、cial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnic
18、al Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 60895:1996 E Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:1
19、6:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60895:1996 BSI 10-1999 2 Foreword of amendment A1 The text of the International Standard IEC 895:1987, prepared by IEC TC 78, Tools for live working, was approved by CENELEC as HD 547 S1 on 1989-12-05. This Harmonization Document, together with comm
20、on modifications prepared by the Technical Committee CENELEC TC 78, was submitted to the formal vote and was approved by CENELEC as EN 60895 on 1996-03-05. The following dates were fixed: For products which have complied with HD 547 S1:1990 before 1997-03-01, as shown by the manufacturer or by a cer
21、tification body, this previous standard may continue to apply for production until 2002-03-01. Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given only for information. In this standard, Annex A to Appendix E and Annex ZA are normative. Ann
22、ex ZA has been added by CENELEC. Contents Page Introduction5 Section 1. General 1Scope5 2Terminology5 Section 2. Technical requirements 3Technical requirements on components5 Section 3. Type tests 4Knitted or woven fabric used for the suit, hood, socks and gloves, and basic shielding fabric used for
23、 face shield7 5Conductive clothing (complete assembly)14 Section 4. Special clauses 6Sampling tests17 7Routine tests17 8Acceptance checks and tests17 9Modification18 10Quality assurance plan18 Annex A (normative) Determination of electrical resistance properties for fabric intended for conductive cl
24、othing for live working. Evaluation of conductive paint19 Annex B (normative) Example of general arrangement of suit22 Appendix C (normative) Test arrangements23 Annex D (normative) Conductive suit measurement points (typical suit construction)33 Appendix E (normative) Measurement of the efficiency
25、of the electrostatic screen. Complete suit34 Annex ZA (normative) Normative references to international publications with their corresponding European publications35 Figure A.1 Area to be painted, covered with circle and annulus for tracing20 Figure A.2 Pouring of liquid paraffin between tracing cir
26、cle and annulus20 Figure A.3 Solidified paraffin ring after removal of the tracing circle and annulus20 Figure A.4 Application of the conductive coating21 Figure A.5 The paraffin ring can be peeled off when the paint has dried21 latest date by which the EN has to be implemented at national level by
27、publication of an identical national standard or by endorsement(dop) 1997-03-01 latest date by which national standards conflicting with the EN have to be withdrawn(dow) 1997-03-01 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60895:199
28、6 BSI 10-19993 Page Figure A.6 Test piece ready for the measurement21 Figure C.123 Figure C.223 Figure C.324 Figure C.424 Figure C.525 Figure C.625 Figure C.726 Figure C.826 Figure C.9 Concentric electrodes for measurement of electrical resistance27 Figure C.10 Electrical resistance28 Figure C.1128
29、Figure C.12 Orientation of test specimens for electrical resistance and current carrying capability tests28 Figure C.13 Electrode set up29 Figure C.14 Test specimen dimensions29 Figure C.15 Screening efficiency: electrode assembly30 Figure C.16 Measure of the screening efficiency30 Figure C.1731 Fig
30、ure C.1831 Figure C.19a32 Figure C.19b32 Table I17 Table II17 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60895:1996 BS
31、I 10-19995 Introduction The conductive clothing by the assembly of its different components should constitute an electrically continuous coverall, surrounding the worker with the possible exception of his face. However the worker can be protected by a face shield electrically connected to the suit i
32、tself. If press studs, zip fasteners, hooks and eyes or any other method of fastening are used in the assembly of the complete suit, care should be taken to ensure that the electrical conductivity of the suit is not impaired. The conductive clothing (complete assembly) should be electrically connect
33、ed to the conductor or the conductive part on which the live working has to be carried out. This connection shall be made by a conductive braid fixed at one of its extremities to the conductive suit and at the other by a special clamp. Section 1. General 1 Scope This standard is applicable to conduc
34、tive clothing worn by electrical workers during live working (especially bare-hand working) at a nominal voltage level up to 800 kV a.c. It is applicable to suit, gloves or mitts, hoods, shoes and socks. The corresponding d.c. values are under consideration. 2 Terminology (see Annex B) Conductive ma
35、terial Material composed of metallic threads or non-metallic conductive substances and natural or synthetic threads closely woven or knitted. Connecting braid Special conductive braid to connect the conductive suit to the live metal working point. The connecting braid is equipped at one of its extre
36、mities with a connection system to the suit; the other extremity of the braid is equipped with a special clamp. Hood Part of the clothing covering the head. Face shield Part covering the workers face. It can be a synthetic and metallized shield having good optical and anti-U.V. qualities, or consist
37、ing of a conductive net. Section 2. Technical requirements 3 Technical requirements on components The material used shall have the following properties: 3.1 Flame retardancy Placed in contact with a flame or a fire (e.g. an electric arc), the material shall be constituted to prevent the fire from sp
38、reading. This quality shall be checked as indicated in Sub-clause 4.1. 3.2 Wear resistance The conductive clothing shall be resistant to abrasion and to tearing. As special tests to check these qualities are difficult to set up and to perform, the satisfaction of the wearer and the life duration of
39、the cloth will be the only elements to consider. 3.3 Electrical resistance This quality can be considered as a basic element which determines the current carrying capability and the spark discharge properties. The only direct consequence for a worker of the correct value of electrical resistance, is
40、 the low potential difference between two points of the cloth in contact with the skin and is consequently an element of comfort. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 01:16:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60895:1996 6 BSI 10-1999 3.4 Current-carrying capability Dur
41、ing the workers travel to his working position (from the metallic structure of the tower or from the ground in an aerial device) and at the moment of his connection to the live conductor, capacitive currents flow through his clothing. These can be significant and it is necessary for the suit to be a
42、ble to conduct them without damage (heating, smoke . . .). This capability will be checked as indicated in Sub-clause 4.3. 3.5 Screening efficiency Material must have a screening efficiency better than 40 dB. Screening efficiency of a conductive fabric is defined by the ratio of energy that would be
43、 received by a body without a screen to energy received by the same body screened by the conductive fabric. A ratio of two voltages measured in these conditions is used to calculate screening efficiency of the conductive fabric. 3.6 Cleaning requirements To ensure that the screening efficiency and f
44、lame retardant properties of the clothing do not deteriorate excessively after repeated cleaning, the clothing shall be subjected to 10 wash-dry cycles and/or 10 dry-cleaning cycles. The screening effect and flame retardant properties shall still meet the specified requirements after the tests. 3.7
45、Spark discharge protection To provide protection from spark discharges directly to the worker, the spacing between any individual adjacent conducting components in the fabric (except for face shield) shall not exceed 5 mm under all normal wearing conditions including stretching (such as at the elbow
46、s or knees). 3.8 Requirements on: 3.8.1 Gloves and socks The resistance of gloves and socks shall be low enough for the maximum expected current flow through them not to be perceptible to the worker. This resistance shall have a maximum value of 100 7 for gloves and 10 7 for socks, when measured usi
47、ng the specified electrodes. 3.8.2 Footwear The footwear resistance shall be low enough so that if the footwear is used alone, without conductive clothing, the voltage drop across the footwear, due to the induced current in a person in the highest expected field strength, will not result in an annoy
48、ing discharge. The resistance shall have a maximum value of 500 7, when measured using the specified electrodes. If conductive socks are used, the shoes may be of a normal type without special conducting properties. 3.8.3 Hood and face shield A conductive hood is necessary to provide screening effec
49、t. It may be completed especially for very high voltages by a facial conductive shield. If no face shield is provided, protective flaps, conductive visor and the shape of the hood, shall ensure face protection. A bond between hood, facial shield and suit shall be provided. 3.8.4 Clothing (complete assembly) Additional tests (Sub-clause 5.6) shall be carried out on the complete assembly to prove the actual values of screening efficiency and resistance in order to detect manufacturing faults. 3.8.5 Marking Each condu
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