1、BRITISH STANDARDBS 7933-3:2008 HD 631.3:2008Electric cables Accessories Material characterisation Part 3: Fingerprinting for heat shrinkable components for medium voltage applications from 3,6/6 (7,2) kV up to 20,8/36 (42) kVICS 29.035.20; 29.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g5
2、5g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS 7933-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008ISBN
3、978 0 580 64306 4National forewordThis British Standard is the UK implementation of HD 631.3:2008.The UK participation 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 c
4、an be obtained on request to its secretary.This publication does not purport to include all the necessary provisions 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 p
5、ublicationDate CommentsHARMONIZATION DOCUMENT HD 631.3 S1 DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT July 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: ru
6、e de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. HD 631.3 S1:2008 E ICS 29.035.20; 29.060.20 English version Electric cables - Accessories - Material characterisation - Part 3: Fingerprinting f
7、or heat shrinkable components for medium voltage applications from 3,6/6 (7,2) kV up to 20,8/36 (42) kV Cbles lectriques - Accessoires - Caractrisation des matriaux - Partie 3: Essais didentification des composants thermortractables pour les applications moyenne tension de 3,6/6 (7,2) kV 20,8/36 (42
8、) kV Kabel und isolierte Leitungen - Garnituren - Materialcharakterisierung - Teil 3: Fingerprint-Prfungen fr wrmeschrumpfende Komponenten fr Mittelspannungsanwendungen von 3,6/6 (7,2) kV bis 20,8/36 (42) kV This Harmonization Document was approved by CENELEC on 2008-06-01. CENELEC members are bound
9、 to comply with the CEN/CENELEC Internal 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
10、or to any CENELEC member. This Harmonization 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, Icel
11、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword This Harmonization Document was prepared by a task force under the direction of WG 11 of CENELEC TC 20, Elect
12、ric 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 631.3 S1 on 2008-06-01. The following dates were fixed: - latest date by which the existence of the HD has to be announced at national level (doa) 2008-12
13、-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 withdrawn (dow) 2011-06-01 HD 631 will have 4 parts: Part 1:
14、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 3,6/6 (7,2) kV up to 20,8/36 (42) kV Part 4: Fingerprintin
15、g 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 consideration. NOTE It has been assumed in the preparation of th
16、is 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 may be injurious to health if adequate precautions are
17、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. _ 2 BS 7933-3:2008Contents 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 Pr
18、eparation and conditioning 6 4.4 Tests . 6 4.5 Test report . 6 Annex A (informative) Health and safety . 8 Annex B (normative) Dimensions after full recovery 9 Figure B.1 9 Table 1 Test methods and requirements 7 3 BS 7933-3:20081 Scope This Harmonization Document specifies the test methods and requ
19、irements for fingerprinting (as defined in 3.12) of heat shrinkable components intended to be used in cable accessories for medium voltage, as defined in 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-
20、alone test, but may be carried out in combination with the accessory type tests. Component basic functions 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 it
21、ems. 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 documen
22、t (including any amendments) applies. 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: Cables with extruded insulation HD 629.2 Test requirements on accessories for use on power cables of rated voltage from 3,6/6 (
23、7,2) kV up to 20,8/36 (42) kV - Part 2: Cables with impregnated paper insulation EN ISO 1183 series Plastics - Methods for determining the density of non-cellular plastics (ISO 1183 series) EN ISO 11358 Plastics - Thermogravimetry (TG) of polymers - General principles (ISO 11358) IEC 60050461 Intern
24、ational Electrotechnical Vocabulary (IEV) - Chapter 461: Electric cables ISO 11357-3 Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of temperature and enthalpy of melting and crystallization 3 Terms and definitions For the purposes of this document, the following terms an
25、d definitions apply together with those given in IEC 60050-461. 3.1 heat shrinkable property of a polymeric component previously expanded to recover to its original shape when heated above an appropriate temperature 3.2 heat shrinkable components expanded polymeric extruded tubings or moulded parts
26、(single or multi-layer), which undergo thermally activated recovery when heated 4 BS 7933-3:20083.3 multi-layer component component which consists of two or more different materials bonded together 3.4 tubing tube of heat shrinkable polymeric material cut to a predetermined length 3.5 moulded part f
27、ormed piece of heat shrinkable polymeric material shaped to fit a specific configuration 3.6 conductive component component whose material has a defined electrical conductivity 3.7 stress control or stress grading component component whose material has defined electrical characteristics to control e
28、lectrical field 3.8 insulating component component whose material has defined electrical characteristics to withstand electrical stress 3.9 oil barrier component component whose material has defined material characteristics to prevent migration of cable impregnation compound 3.10 anti-tracking compo
29、nent component whose material has defined material characteristics to resist formation of conductive paths by surface electrical activity 3.11 sealant component component which, when used in conjunction with heat shrink components, forms a barrier along interfaces. It can be in the form of mastic, p
30、utty, grease or adhesive 3.12 fingerprinting tests made to establish and subsequently confirm the properties of materials or components used in cable accessories 3.13 deviation variation of a property between the initial test values and test values measured on new samples at a later date 3.14 initia
31、l test tests made to establish the properties of materials or components used in cable accessories 5 BS 7933-3:20084 Fingerprinting 4.1 General Tests shall be carried out on heat shrinkable components as defined in Table 1. 4.2 Sampling Samples for fingerprinting shall be taken from material stored
32、under conditions prescribed by the supplier. The fingerprinting test on heat shrinkable components shall be carried out either a) as a stand-alone test. Samples used for the initial test shall be taken from material available with or without sealant as agreed between supplier and user, or b) in comb
33、ination 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 available, the samples used for the initial test shall be taken from materi
34、al available as agreed between supplier and user. 4.3 Preparation and conditioning After full recovery in an air circulating oven at (200 5) C for 5020+min, original components shall be individually prepared and conditioned in accordance with relevant test methods. For multilayer components the mate
35、rial samples shall be taken from individual layers. 4.4 Tests Components shall be tested in accordance with the tests methods 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 test meth
36、ods 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 BS 7933-3:2008Table 1 - Test methods and requirements Material / Component property Test method Unit Requirem
37、ents Deviation Comments Dimensions after full recovery a- Inner diameter (d1) - Wall thickness (Wc) Annex B mm mm 5 % 7,5 % Density EN ISO 1183 series g/cm3 5 % Measured without sealant and for multi-layer each individual layer shall be measured. Differential scanning - Calorimetry (DSC)bISO 11357-3
38、 C 5 K Measured without sealant and for multi-layer each individual layer shall be measured. Thermogravimetric analysis (TGA) bPolymer: - 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
39、K 10 % 15 K Measured without sealant and for multi-layer each individual layer shall be measured.aTest shall be performed on the component as received. For multi-layer components the value for each layer shall be recorded separately, where relevant. For nominal value refer to product data sheet. bTe
40、st sequence and conditions shall be clearly recorded in the test report. The same sequence and conditions shall be used when the test is re-conducted. 7 BS 7933-3:2008Annex A (informative) Health and safety The supplier should make available on request the material safety data sheet (MSDS), if any,
41、for each heat shrinkable component, in order to enable the purchaser to transport, use and dispose of the heat shrinkable components and their packaging in a safe manner in accordance with relevant EU or overriding national legislation in relevant languages. Further relevant information concerning h
42、ealth and safety linked to installation conditions should be made available on request. 8 BS 7933-3:2008Annex B (normative) Dimensions after full recovery The expanded tubing shall be fully recovered in an air circulated oven and allowed to cool to ambient temperature. Measurement shall be made of t
43、he inner diameter (d1) and the wall thickness (w1), without adhesive. From these two values the cross-sectional area A of the tubing shall be calculated using formula (1): 111)( wwdA += (1) where A = calculated cross-sectional area d1= measured internal diameter after full recovery w1= measured wall
44、 thickness after full recovery Using formula (2), the wall thickness Wcof the tubing at the suppliers specified recovered diameter Dcshall then be calculated, taking the value of A from (1) and the value of Dcfrom the suppliers relevant product data sheet: 2/42CcCDDAW +=(2) where Dc= recovered inter
45、nal diameter as specified by suppliers data sheet Wc= calculated wall thickness Figure B.1 d1 W1 9 BS 7933-3:2008BS 7933-3:2008 HD 631.3:2008BSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institution (BSI)BSI is the independent nati
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