1、BRITISH STANDARD BS EN 61340-4-3:2002 IEC 61340-4-3:2001 Electrostatics Part 4-3: Standard test methods for specific applications Footwear The European Standard EN 61340-4-3:2001 has the status of a British Standard ICS 17.220.99; 29.020; 61.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED
2、BY COPYRIGHT LAWBS EN 61340-4-3:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 7 February 2002 BSI 7 February 2002 ISBN 0 580 38940
3、5 National foreword This British Standard is the official English language version of EN 61340-4-3:2001. It is identical with IEC 61340-4-3:2001. The UK participation in its preparation was entrusted to Technical Committee GEL/101, Electrostatics, which has the responsibility to: A list of organizat
4、ions represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to
5、 the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondenc
6、e Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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 British Standard does not of its
7、elf confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate the
8、m in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEURO
9、PEAN STANDARD EN 61340-4-3 NORME EUROPENNE EUROPISCHE NORM November 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CE
10、NELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61340-4-3:2001 E ICS 17.220.99; 29.020; 61.060 English version Electrostatics Part 4-3: Standard test methods for specific applications - Footwear (IEC 61340-4-3:2001) Electrostatique
11、Partie 4-3: Mthodes dessai normalises pour des applications spcifiques - Chaussures (CEI 61340-4-3:2001) Elektrostatik Teil 4-3: Standard-Prfverfahren fr spezielle Anwendungen - Schuhwerk (IEC 61340-4-3:2001) This European Standard was approved by CENELEC on 2001-10-01. CENELEC members are bound to
12、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 references concerning such national standards may be obtained on application to the Central
13、 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 translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same statu
14、s as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Foreword T
15、he text of document 101/123/FDIS, future edition 1 of IEC 61340-4-3, prepared by IEC TC 101 “Electrostatics“, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61340-4-3 on 2001-10-01. The following dates were fixed: latest date by which the EN has to be implemented at
16、 national level by publication of an identical national standard or by endorsement (dop) 2002-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2004-10-01 Annexes designated “normative“ are part of the body of the standard. In this standard, annex Z
17、A is normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61340-4-3:2001 was approved by CENELEC as a European Standard without any modification. _ Page 2 EN ISO 6134043:2001 BSI 7 February 2002INTRODUCTION Footwear, especially shoes, have be
18、come an important electrostatic control device in all areas, but particularly in electronics manufacturing. Standards exist from various national committees and these have served as guidance in the preparation of this first International Standard for electrostatic control footwear. Control of unwant
19、ed electrostatic charge is of particular importance where personnel work around electrostatic-sensitive processes, materials or items. In many cases, devices such as wrist straps or other devices are employed to provide an electrical bond between a persons skin and a ground connection. Many instance
20、s exist in industry where wrist straps or other tethering devices cannot be safely or conveniently applied, but there is still a need to provide a ground connection for personnel. A convenient method to provide a ground connection for personnel is through their feet while standing or walking on a de
21、fined and properly specified electrostatic control floor surface. The measurement method described in this part of IEC 61340 can be used to monitor electrical specifications of footwear during manufacture, prior to selection by an end user or periodically during use. The method described involves th
22、e use of a specific set of test equipment and instruments. Other equipment and instruments may be used to measure the parameters specified, but in the event of any dispute, the equipment, instruments and measurement method established in this standard apply. Page 3 EN ISO 6134043:2001 BSI 7 February
23、 2002ELECTROSTATICS Part 4-3: Standard test methods for specific applications Footwear 1 Scope This part of IEC 61340 describes a test method for determining the electrical resistance of footwear used in the control of electrostatic potential on people. This standard is suitable for use by the manuf
24、acturer of footwear as well as the end user. A method for measuring the electrical resistance of footwear alone is described and serves as an acceptance test for new footwear. NOTE Although this standard does not include requirements for personal safety, attention is drawn to the need for all concer
25、ned to comply with the relevant local statutory requirements regarding the health and safety of all persons in all places of work that use footwear defined by the test method of this standard. Insulating footwear is not included within the scope of this standard although the electrical resistance me
26、asurement techniques may be applicable. 2 Normative references The following referenced documents are indispensable 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 amendme
27、nts) applies. IEC 61340-2-3:2000, Electrostatics Part 2-3: Methods of test for determining the resistance and resistivity of solid planar materials used to avoid electrostatic charge accumulation 3 Definitions For the purpose of this part of IEC 61340, the following definitions apply. 3.1 footwear s
28、hoes, slippers or booties NOTE Two types of footwear exist, see 3.2 and 3.3. 3.2 electrostatic conductive footwear footwear as tested by the method described in this standard with an electrical resistance of 1 10 5 3.3 electrostatic dissipative footwear footwear as tested by the method described in
29、this standard with an electrical resistance of 1 10 5and 1 10 8 Page 4 EN ISO 6134043:2001 BSI 7 February 20024 Test specimens The minimum number of specimens for classification testing shall be three pairs. Cleaning of specimens, if needed, shall be in accordance with the manufacturers recommendati
30、ons. 5 Conditioning and controlled environment for classification tests The electrostatic behaviour of materials generally depends on environmental conditions, mainly on relative humidity. For this reason, electrical measurements shall be performed under controlled conditions defined by the three cl
31、asses of table 1. The selection of a class for testing is made according to the type of tested footwear and the foreseen use. It is based upon the most severe conditions (lowest humidity) in which the product is intended to be used. The samples are both conditioned and tested in a test room or suita
32、ble facility under the following environmental conditions. Pre-conditioning of samples may be necessary as defined in the table to eliminate the effect of stress appearing after moulding of certain materials or to dry the footwear before actual conditioning begins. Table 1 Controlled conditions for
33、electrical measurements Environmental class for pre-conditioning, conditioning and measurement Preconditioning a Conditioning a Measurement a 1 96 0 10 h 40 C 3 C RH 15 % 96 0 10 h 23 C 2 C 12 % RH 3 % RH 23 C 2 C 12 % RH 3 % RH 2 96 0 10 h 23 C 2 C 25 % RH 3 % RH 23 C 2 C 25 % RH 3 % RH 3 48 0 5 h
34、23 C 2 C 50 % RH 5 % RH 23 C 2 C 50 % RH 5 % RH NOTE The conditioning times specified in table 1 may not necessarily be sufficient to bring the specimens into complete equilibrium with the environment. They have been selected as a compromise between experimental cost and accuracy. If it is desired t
35、o evaluate the performance at near equilibrium, then a series of measurements should be made after a range of conditioning times. ah = Duration; C = Temperature; % RH = Relative humidity. Page 5 EN ISO 6134043:2001 BSI 7 February 20025.1 Classification and marking of footwear Footwear shall be marke
36、d. The marking shall include the environmental class and footwear type. For example: “Environmental class 1 Dissipative“ means: the resistance of the marked footwear is as specified in 3.2.2 (i.e. 1 10 5and 1 10 8 ) when measurements are performed after pre-conditioning and conditioning according to
37、 class 1 of table 1. NOTE It is recommended that the classification of footwear be indicated by durable marking on the bottom surface of their soles. 5.2 Environment for acceptance and periodic tests The environment of the in-use facility can be very different from the one in which the classificatio
38、n tests were performed. Experience will be necessary to ensure that the type designation remains the same for in-use footwear. For example, if footwear has been classed as dissipative in environmental class 1, then acceptance and periodic tests should be used to check that they meet the requirements
39、 for dissipative footwear in the environment of the in-use facility. 5.3 Test report The test report shall include at least the following information: a) date of measurement; b) description and identification of footwear (name, grade, colour, manufacturer, etc.); c) type of measurement; d) temperatu
40、re and relative humidity conditions during test; e) minimum, maximum and average of test values; f) classification of specimens (i.e. footwear type). For classification test: 1) type, size and number of specimens; 2) pre-conditioning (cleaning of specimens and pre-drying); 3) conditioning; 4) descri
41、ption of resistance measurement apparatus; 5) voltage polarity; 6) applied voltage; 7) time for which voltage is applied before a reading is taken; 8) any deviations from the specified procedure. Page 6 EN ISO 6134043:2001 BSI 7 February 20026 Test equipment 6.1 Load applied to footwear under test T
42、he load applied to the footwear under test is 12,5 kg 2,5 kg. This is achieved using a bag, or bags, sufficiently flexible (cotton socks work well) and filled with 12,5 kg 2,5 kg of metal shot ( 3 mm), to fit inside the footwear under test. NOTE Resistance testing of footwear while not being worn re
43、quires the application of a mass or weight either directly or through the application of a known force to the footwear while placed on a counter electrode. The mass or weight may be one of several designs, including any method not described in this standard, provided that it meets the intent and pur
44、pose of applying a known load to the footwear under test. 6.2 Conductive electrode The conductive electrode is fitted so as to contact and cover as large an area as possible of the sole on the inside of the footwear. The resistance shall be 500 when tested according to IEC 61340-2-3 (e.g. aluminium
45、foil fitted to the inside sole of the footwear will function correctly). 6.3 Counter electrode This consists of a stainless steel plate larger than the footwear under test (typically with minimum dimensions of 150 mm 300 mm) and isolated from ground. 6.4 Resistance measurement apparatus A self-conta
46、ined resistance meter (ohmmeter) or power supply and current meter in the appropriate configuration for resistance measurement, with 10 % accuracy, and capable of the following requirements. 6.4.1 Laboratory evaluations The apparatus shall have a circuit voltage while under load of 10 V 0,5 V for re
47、sistance below 1,0 10 6 , and 100 V 5 V for resistance of 1,0 10 6and above. The measuring range of the apparatus shall be at least one order of magnitude either side of the expected range of resistance being measured. The apparatus shall be used in a manner that ensures unintended ground paths do n
48、ot influence measurements. 6.4.2 Acceptance testing A laboratory evaluation apparatus shall be used for acceptance testing as follows: The apparatus shall have an open circuit voltage of 10 V 0,5 V for resistance below 1,0 10 6 , and 100 V 5 V f o r r e s is t a n c e o f 1 , 0 10 6and above. The me
49、asuring range of the apparatus shall be at least one order of magnitude either side of the expected range of resistance being measured. The apparatus shall be used in a manner that ensures unintended ground paths do not influence measurements. In case of dispute, laboratory evaluation apparatus shall be used. 6.5 Environmental test chamber An enclosed chamber or other environment cap
