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1、BRITISH STANDARD BS 7933-4:2008 HD 631.4:2008 Electric cables Accessories Material characterisation Part 4: Fingerprinting for cold shrinkable components for low and medium voltage applications up to 20,8/36 (42) kV ICS 29.035.20; 29.060.20 ? Licensed CopyChinese University of Hong Kong, 21/10/2008
2、03:32, Uncontrolled Copy, (c) BSI BS 7933-4:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008 ISBN 978 0 580 64307 1 National foreword This British Standard is the UK implementation of HD 631.4:2008. The UK parti
3、cipation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/11, Cable accessories. 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 pr
4、ovisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy,
5、(c) BSI HARMONIZATION DOCUMENT HD 631.4 S1 DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT July 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 3
6、5, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. HD 631.4 S1:2008 E ICS 29.035.20; 29.060.20 English version Electrical cables - Accessories - Material characterisation - Part 4: Fingerprinting for cold shrin
7、kable components for low and medium voltage applications up to 20,8/36 (42) kV Cbles lectriques - Accessoires - Caractrisation des matriaux - Partie 4: Essais didentification des composants rtractables froid pour les applications basse et moyenne tension jusqu 20,8/36 (42) kV Kabel und isolierte Lei
8、tungen - Garnituren - Materialcharakterisierung - Teil 4: Fingerprint-Prfungen fr kaltschrumpfende Komponenten fr Nieder- und Mittelspannungsanwendungen bis 20,8/36 (42) kV This Harmonization Document was approved by CENELEC on 2008-06-01. CENELEC members are bound to comply with the CEN/CENELEC Int
9、ernal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level. Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the Central Secretariat or to any CENELEC member. This Harm
10、onization Document exists in three official versions (English, French, German). CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
11、nia, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI Foreword This Harmonization Document was prepared by a task fo
12、rce under the direction of WG 11 of CENELEC TC 20, Electric cables. As agreed at the Bruges meeting (June 2007), the text of the draft was submitted to the formal vote and was approved by CENELEC as HD 631.4 S1 on 2008-06-01. The following dates were fixed: - latest date by which the existence of th
13、e HD has to be announced at national level (doa) 2008-12-01 - latest date by which the HD has to be implemented at national level by publication of a harmonized national standard or by endorsement (dop) 2009-06-01 - latest date by which the national standards conflicting with the HD have to be withd
14、rawn (dow) 2011-06-01 HD 631 will have 4 parts: Part 1: Fingerprinting and type tests for resinous compounds Part 2: Fingerprinting and type tests for heat shrinkable components for low voltage applications Part 3: Fingerprinting for heat shrinkable components for medium voltage applications from 3,
15、6/6 (7,2) kV up to 20,8/36 (42) kV Part 4: Fingerprinting for cold shrinkable components for low and medium voltage applications up to 20,8/36 (42) kV Fingerprinting of sealant components which are delivered as non heat shrinkable items, but that have an important interfacing role, is under consider
16、ation. NOTE It has been assumed in the preparation of this document that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced. WARNING This Harmonization Document calls for the use of substances and/or procedures that
17、 may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. _ BS 7933-4:2008 2 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled
18、Copy, (c) BSI Contents 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Fingerprinting . 6 4.1 General . 6 4.2 Sampling . 6 4.3 Preparation and conditioning . 6 4.4 Tests . 6 4.5 Test report 6 Annex A (informative) - Health and safety . 8 Table 1 - Test methods and requirements 7
19、 BS 7933-4:2008 3 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI 1 Scope This Harmonization Document specifies the test methods and requirements for fingerprinting (as defined in 3.11) of cold shrinkable components intended to be used in cable accessories
20、for low and medium voltage, as defined in EN 50393, HD 629.1 and HD 629.2. Fingerprinting of materials does not have a mandatory link to type testing of accessories. It shall be regarded as a stand-alone test, but may be carried out in combination with the accessory type tests. Component basic funct
21、ions can be: conductive, stress control or stress grading, insulating, oil barrier, anti tracking, external protection and sealing. Components are supplied as single layer items or as multi-layer items. Components are generally supplied pre-expanded or with a system allowing expansion prior to insta
22、llation. NOTE Information on health and safety is given in Annex A. 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 doc
23、ument (including any amendments) applies. EN 50393 Test methods and requirements for accessories for use on distribution cables of rated voltage 0,6/1,0 (1,2) kV HD 629.1 Test requirements on accessories for use on power cables of rated voltage from 3,6/6(7,2) kV up to 20,8/36(42) kV - Part 1: Cable
24、s with extruded insulation HD 629.2 Test requirements on accessories for use on power cables of rated voltage from 3,6/6 (7,2) kV up to 20,8/36 (42) kV - Part 2: Cables with impregnated paper insulation EN ISO 11358 Plastics - Thermogravimetry (TG) of polymers - General principles (ISO 11358) IEC 60
25、050461 International Electrotechnical Vocabulary (IEV) - Chapter 461: Electric cables ISO 2781 Rubber, vulcanized - Determination of density 3 Terms and definitions For the purposes of this document, the following terms and definitions apply together with those given in IEC 60050-461. 3.1 cold shrin
26、kable property of an elastomeric component previously expanded to recover to its original shape at ambient temperature after removal of the means of support BS 7933-4:2008 4 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI 3.2 cold shrinkable component elast
27、omeric extruded tubing or moulded part (single- or multi-layer) pre-expanded on a support or expanded prior to installation, which tends to recover to its original dimensions when the support is removed 3.3 multi-layer component component which consists of minimum two or more different materials bon
28、ded together 3.4 conductive component component whose material has a defined electrical conductivity 3.5 stress control or stress grading component component whose material has defined electrical characteristics to control electrical field 3.6 insulating component component whose material has define
29、d electrical characteristics to withstand electrical stress 3.7 oil barrier component component whose material has defined material characteristics to prevent migration of cable impregnation compound 3.8 anti-tracking component component whose material has defined material characteristics to resist
30、formation of conductive paths by surface electrical activity 3.9 sealant component component which, when used in conjunction with cold shrinkable components, forms a barrier along interfaces. It can be in the form of mastic, putty, grease or adhesive 3.10 external protection component component prov
31、iding protection against the environment 3.11 fingerprinting tests made to establish and subsequently confirm the properties of materials or components used in cable accessories 3.12 deviation variation of a property between the initial test values and test values measured on new samples at a later
32、date 3.13 initial test tests made to establish the properties of materials or components used in cable accessories BS 7933-4:2008 5 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI 3.14 mechanically assembled cold shrinkable components mechanical superpositi
33、on of at least two cold shrinkable components on one support 3.15 support device that serves to retain a cold shrinkable component in its expanded state and that is removed to allow recovery 4 Fingerprinting 4.1 General Tests shall be carried out on cold shrinkable components as defined in Table 1.
34、4.2 Sampling Samples for fingerprinting shall be taken from material stored under conditions prescribed by the supplier. The fingerprinting test on cold shrinkable components shall be carried out either a) as a stand-alone test. Samples used for the initial test shall be taken from material availabl
35、e with or without sealant as agreed between supplier and user, or b) in combination with an accessory type test. Samples used for the initial test shall be taken from the same batch as those used in the accessory type test with or without sealant. In the event that no material from the same batch is
36、 available, the samples used for the initial test shall be taken from material available as agreed between supplier and user. 4.3 Preparation and conditioning Original components shall be individually prepared and conditioned in accordance with relevant test method conditions. For multi-layer compon
37、ents, the material samples shall be taken from individual layers. 4.4 Tests Components shall be tested in accordance with the tests specified in Table 1. 4.5 Test report The test report shall include the following data: 1 part number or identification; 2 batch number and/or manufacturing date; 3 tes
38、t methods and results; 4 copy of the technical data sheet (TDS) and material safety data sheet (MSDS), if any (refer to Annex A); 5 major test parameters, including conditioning and calibration; 6 expansion date (mm/yy) of component. BS 7933-4:2008 6 Licensed CopyChinese University of Hong Kong, 21/
39、10/2008 03:32, Uncontrolled Copy, (c) BSI Table 1 - Test methods and requirements Material / Component property Test method Unit Requirements Deviation Comments Support dimensions: - Inner diameter - Outer diameter mm 5 % 5 % Weight a g 7,5 % Shrink test b Density ISO 2781 g/cm3 5 % For multi-layer
40、components each individual layer shall be measured. Thermogravimetric analysis (TGA) c Polymer: - Weight loss - Mean temperature Carbon black: - Weight loss - Mean temperature Filler: - Weight loss - Mean temperature EN ISO 11358 % C % C % C 10 % 15 K 10 % 15 K 10 % 15 K For multi-layer components e
41、ach individual layer shall be measured. a Components of mechanically assembled cold shrinkable component shall be weighed separately. b A suitable test method and requirements are under consideration. c Test sequence and conditions shall be clearly recorded in the test report. The same sequence and
42、conditions shall be used when the test is re-conducted. BS 7933-4:2008 7 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI Annex A (informative) Health and safety The supplier should make available on request the material safety data sheet (MSDS), if any, for
43、 each cold shrinkable component, in order to enable the purchaser to transport, use and dispose of the components (including the support means) and their packaging in a safe manner in accordance with relevant EU or overriding national legislation in relevant languages. Further relevant information c
44、oncerning health and safety linked to installation conditions should be made available on request. BS 7933-4:2008 8 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c) BSI blank Licensed CopyChinese University of Hong Kong, 21/10/2008 03:32, Uncontrolled Copy, (c)
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