1、 STD.BSI BS EN 115-ENGL 1778 Lb24bb7 Ob87579 BAT BRITISH STANDARD Resilient and textile floor coverings - Assessment of static electrical propensity The European Standasd EN 1815 : 1997 has the status of a British Standard ICs 59.080.60; 97.150 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED B
2、Y COPYRIGHT LAW BS EN 1815 : 1998 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-STD-BSI BS EN 1815-ENGL 1998 Lb24bb9 Ob89b00 321 direction of the Sector Board for Amd. No. Date M
3、aterials and Chemicals, was published under the authority of the Standards Board and comes inta effect on 15 March 1998 BS EN 1816 : 1998 Text affected National foreword This Brit - monitor related international and European developments and promulgate them in the UK. A list of organizations represe
4、nted on this committee can be obtained on request to its secretary. When the standard was at the FormaJ Vote stage, the UK voted against it because it considers that ISO/DIS 6356 represents a more advanced state-of-the-art method Cross-references The British Standards which implement international o
5、r European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International standards Correspondence Index, or by using the Find facility of the BSI Stan d) capable of measurements between (-20 to +20) kV 6.7 lhmrwrnetm and hygrometer, wi
6、th an accuracy of 1 % for example a calibrated wet and dry bulb thermometer pychrometer) with a scale reading to 0.1 “C. 1 The test sandals complete with the specified sole materials are supplied for polyvinyl chloride by TNO Centre for Textiles, 2600 JH Delft, The Netherlands, and for rubber by BAM
7、, Bundesamt fr Materialpdung, 12200 Berlin, Germany. This information is given for the convenience of users of the standard and does not constitute an endorsement by CEN of the product. Equivalent products may be used if they can be shown to lead to the same results. O BSI I998 Copyright European Co
8、mmittee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-Page 4 EN 1815 : 1997 1. straps 2. Hollow rivets 3. Socklining Figure 1. Test sandals 4. insole, e.g. leather 5. Adhesive 6. Outsole of specified materia
9、l Dimensions in mihetres Q Ii - 4 3 (A 4 1 Hand electrode 2 3 Divider capacitance, C2 4 Static voltmeter and recorder Figure 2. Measuring system Hand electrode capacitance, C, = 10 pF O BSI 1998 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo r
10、eproduction or networking permitted without license from IHS-,-* * IA Page 5 EN 1815 : 1997 Dimensions in millimetres 6 1 5 2 3 4 130 I 1 Cable core 2 Metaitubing 3 Polytetrailuoroethylene (PTFE) sleeve 4 BNC plug 5 Coaxiaicable 6 Polyethylene bung Figure 3. fipical hand electrode 6 Test procedure 6
11、.1 Cleaning of test sandals Before each test series and after each individual test, clean the soles with cotton cloth and ethanol. To roughen the surface, use the abrasive paper and clean again with a clean piece of cloth and ethanol. The test shall start after a minimum drymg time of 6 min. 6.2 Met
12、hod A: test procedure in laboratory conditions 6.2 .I Preparation Place the grounded metal base plate on the floor in the conditioned test room (see clause 4). If it is specified that the floor covering to be tested is to be stuck down on to a surface having a resistance to earth of lo9 IR, place th
13、e rubber mat on the grounded metal base plate. Place the test piece on the rubber mat, taking care that the test piece is not in contact with the metal base piate. If it is specified that the floor covering is to be stuck down on to concrete or on any surface having a resistance to earth 5 i IR, do
14、not use the rubber mat but place the test piece directly on the metal plate. 6.2.2 Discharging Discharge the rubber mat, when used, and the test piece before each individual test, using the ionizing source to eliminate any residual static charge. 6.2.3 Walking test Place the sandals on the test piec
15、e. Step into the sandals and fasten them. Take the hand electrode, already connected with the static measuring device, and earth the person in order to start from zero voltage. With the hand electrode in the hand, walk on the test piece with reguiar paces at a rate of two steps per second, forwards
16、and backwards but always with the body facing the same direction. Avoid scuffing or pivoting. At each step, lift the sandals to between 50 mm and 80 mm above the test piece. M and lower the sandal sole in a plane parallel to the test piece. Cover as much of the test piece as possible and continue wa
17、lking until the peak voltage ceases to rise, but for not more than 60 s. Take off the sandals while still on the test piece. Perform the test with both sole materials three times each. 6.3 Method B: test procedure in-situ Record the ambient temperature and relative humidim, and the condition of the
18、floor covering and, if relevant, any treatment prior to testing (e.g. cleaning, washing etc.). Place the sandals on the area of floor covering to be tested and perform the test as in 6.2.3. O BSI 1998 Copyright European Committee for Standardization Provided by IHS under license with CENNot for Resa
19、leNo reproduction or networking permitted without license from IHS-,- STD-BSI BS EN LBL5-ENGL L778 Lb29bbS Ob87bOb 89T Page 6 EN 1815 : 1997 7 Calculation and expression of resuits The walking test wili give a voltage diagram as shown in figure 4. Determine from the recorder diagram the average of t
20、he five highest valleys and express the results in kilovolts, to the nearest 0,l kY Calculate the average of the three test results for each affect and are sole mated to the nearest 0,l kY 9 Precision The test results of static electrical charge generated by a person waMng on a floor, are affected b
21、y the inhomogeneity of the floor covering and can very much depend on the relative humidity Factors which described in informative annex A. 8 Test report The test report shall contain the foilowing information: a) a reference to this standard and the method used, i.e. EN 1815, method A or B b) a com
22、plete identification of the product tested, including colour and manufacturers reference number. If a complete identification is not possible for an in-situ test, the location of the floor shall be stated; c) the method of sampling and previous history; d) the test conditions; e) the individual resu
23、lts and the average of the three tests to the nearest 0,l kV for both sole materials, f) any deviation from this standard which may have affected the results. 1 10 8 “6 3 4 2 o r 2 Average o! I I I I I 1 O 10 12 30 Time, s voltage NOTE. The voltage peaks in the diagram are mainly a result of a lower
24、 capacitance of the person performing the test when lifting one of his feet from the test piece. The voltage peak wili therefore depend on the distance between the lifted foot and the floor surface. Figure 4. Spica1 voltage diagram O BSI 1998 Copyright European Committee for Standardization Provided
25、 by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,- STD.BS1 BS EN 1815-ENGL 1778 W Lb24bb9 Ob7b07 7b W Page 7 EN 1815 : 1997 Annex A (informative) Precision of the test method The determination of the body voltage generated when walking on
26、a floor presents many problems and may be affected by many factors. Relative humidity, clothing, sole material, the floor coverings, mode of walking and, not least, the capacitance of a person, may affect the generation of body voltage. Hence the generated body voltage in practice may be different f
27、rom the laboratory result. Even the voltage at which a person experiences a discharge is different from person to person. It has been found that most persons feel a discharge effect when charged to 3 kV and higher. The walking test was found to be the most practical test method to simulate the effec
28、t of chmghg under standardized testing conditions). Under different conditions in-situ, the results wiil differ from the laboratory results. Although the precision of this test method has been questioned, the method has been used for more than 20 years. During this time it has provided good service
29、in idenmg critical floor coverings, giving an approximate result capable of evaluating the ability of floor coverings to create unacceptable static electrical charging. ) The test sandals complete with the specified sole matenals are supplied for polyvinyl chlonde y TNO Centre for Textiles, 2600 JH
30、Delft, The Netherlands and Cor rubber by BAM, Bundesamt Cur Matenalpdung, 12200 Berlin, Germany This information 1s given for the convenience of users of the standard and does not constitute an endorsement by CEN of the product Equivalent products may be used if they can be shown to lead to the same
31、 results O BSI 1998 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-BS EN 1815 : 1998 BSI 389 Chicwick High Road London w4 4AL BSI - British Standards Institution BSI is the indepe
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