1、BRITISH STANDARDBS 7933-2:2007 HD 631.2 S1:2007Electric cables Accessories Material characterisation Part 2: Fingerprinting and type tests for heat shrinkable components for low voltage applicationsICS 29.035.20; 29.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g
2、44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS 7933-2:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2008 BSI 2008ISBN 978 0 580 56669 1National forew
3、ordThis British Standard is the UK implementation of HD 631.2 S1:2007. Together with BS 7933-1:2007 and BS EN 50393:2006 it supersedes BS 6910-1:1988 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/11, Ca
4、ble 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 provisions of a contract. Users are responsible for its correct application. Amendments/corrigenda issued since publication
5、Date CommentsHARMONIZATION DOCUMENT HD 631.2 S1 DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT December 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de S
6、tassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. HD 631.2 S1:2007 E ICS 29.035.20 English version Electric cables - Accessories - Material characterisation - Part 2: Fingerprinting and type tests for
7、 heat shrinkable components for low voltage applications Cbles lectriques - Accessoires - Caractrisation des matriaux - Partie 2: Essais didentification et essais de type pour les composants thermortractables pour les applications basse tension Kabel und isolierte Leitungen - Garnituren - Materialch
8、arakterisierung - Teil 2: Fingerprint- und Typprfungen fr wrmeschrumpfende Komponenten fr Niederspannungsanwendungen This Harmonization Document was approved by CENELEC on 2007-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for imp
9、lementation 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 Harmonization Document exists in three official versions (En
10、glish, 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, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
11、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. HD 631.2 S1:2007 - 2 - Foreword This Harmonization Document was prepared by a task force under the direction of WG 11 of CENELEC TC 20, Electric cables. The text of the draft was submitted to the formal vote a
12、nd was approved by CENELEC as HD 631.2 S1 on 2007-09-01. The following dates were fixed: latest date by which the existence of the HD has to be announced at national level (doa) 2008-03-01 latest date by which the HD has to be implemented at national level by publication of a harmonized national sta
13、ndard or by endorsement (dop) 2008-09-01 latest date by which the national standards conflicting with the HD have to be withdrawn (dow) 2010-09-01 HD 631 will have 4 parts: Part 1: Fingerprinting and type tests for resinous compounds Part 2: Fingerprinting and type tests for heat shrinkable componen
14、ts 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: Fingerprinting for cold shrinkable components for low and medium voltage applications up to 20,8/36 (42) kV NOTE It has been assumed
15、 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 may be injurious to health if
16、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. _ - 3 - HD 631.2 S1:2007 Contents 1 Scope4 2 Normative references.4 3 Terms and definitions5 4 Fingerprinting.6 4.1 General 6 4
17、.2 Sampling6 4.3 Preparation and conditioning 6 4.4 Tests6 4.5 Test report6 5 Type tests .7 5.1 General 7 5.2 Sampling8 5.3 Preparation and conditioning 8 5.4 Tests8 5.5 Test report8 Annex A (informative) Health and safety .14 Annex B (normative) Dimensions after full recovery15 Annex C (normative)
18、General requirements16 Figure 1 Assembly for peel test 12 Table 1 Fingerprinting: Test methods and requirements7 Table 2 Type tests: Test methods and requirements.9 HD 631.2 S1:2007 - 4 - 1 Scope This Harmonisation Document specifies the test methods and requirements for a) fingerprinting (as define
19、d in 3.7), b) type testing (as defined in 3.8). of heat shrinkable components intended to be used for electrical insulation or electrical insulation and mechanical protection in cable accessories for low voltage, as defined in EN 50393. Fingerprinting and type testing of materials do not have a mand
20、atory link to type testing of accessories. They shall be regarded as stand-alone tests, but can be carried out in combination with the accessory type tests. NOTE Information on health and safety is given in Annex A. 2 Normative references The following referenced documents are indispensable for the
21、application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50393, Test methods and requirements for accessories for use on distribution cables of rated voltage 0,6/1,
22、0 (1,2) kV EN 60243-1, Electrical strength of insulating materials Test methods Part 1: Test at power frequencies (IEC 60243-1) EN 60296, Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear (IEC 60296) EN 60684-2, Flexible insulating sleeving - P
23、art 2: Methods of test (IEC 60684-2) EN 60811-2-1, Insulating and sheathing materials of electric and optical cables Common test methods Part 2-1: Methods specific to elastomeric compounds Ozone resistance, hot set and mineral oil immersion tests (IEC 60811-2-1) HD 429, Methods of test for volume re
24、sistivity and surface resistivity of solid electrical insulating materials (IEC 60093) EN 1426, Bitumen and bituminous binders - Determination of needle penetration EN 1465, Adhesives. Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies (ISO 4587, mod.) EN ISO 62, Plastic
25、s - Determination of water absorption (ISO 62) EN ISO 527-2, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2) EN ISO 868, Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO
26、 868) EN ISO 1183 series, Plastics - Method for determining the density of noncellular plastic (ISO 1183 series) EN ISO 11358, Plastics - Thermogravimetry (TG) of polymers - General principles (ISO 11358) IEC 60050-461, International Electrotechnical Vocabulary Chapter 461: Electric cables ISO 8013,
27、 Rubber, vulcanized - Determination of creep in compression ISO 11357-3, Plastics - Differential scanning calorimetry (DSC) - Part: 3 Determination of temperature and enthalpy of melting and crystallisation ASTM E28-99:2004, Standard test methods for softening point of resins derived from naval stor
28、es by ring-and-ball apparatus - 5 - HD 631.2 S1:2007 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 heat shrink property of a polymeric component previously expanded to recover to its original shape w
29、hen heated above an appropriate temperature 3.2 heat shrinkable component expanded polymeric extruded tubing or moulded part which undergoes thermally activated recovery when heated to an appropriate temperature 3.3 tubing tube of heat shrinkable polymeric material cut to a predetermined length 3.4
30、wraparound sleeve flat sheet of heat shrinkable polymeric material, which can be wrapped to form tubing 3.5 moulded part formed piece of heat shrinkable polymeric material shaped to fit specific configuration 3.6 sealant material, which when used in conjunction with heat shrinkable components, forms
31、 a barrier along interfaces NOTE The sealant (for example holt melt or mastic) may be pre-coated on the heat shrink component or applied separately. 3.7 fingerprinting tests made to establish and subsequently confirm the properties of materials or components used in cable accessories 3.8 type test t
32、ests made on the material or component of a cable accessory in order to demonstrate satisfactory performance characteristics to meet the intended application 3.9 deviation variation of a property between the initial test values and test values measured on new samples at a later date 3.10 intial test
33、 tests made to establish the properties of materials or components used in cable accessories HD 631.2 S1:2007 - 6 - 4 Fingerprinting 4.1 General Tests shall be carried on heat shrinkable components as defined in Table 1. 4.2 Sampling Samples for fingerprinting shall be taken from material stored und
34、er conditions prescribed by the supplier. The fingerprinting test of 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 combina
35、tion 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 material
36、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 components with sealant, the seal
37、ant shall be removed when required (as specified in the remarks column of Table 1), before running the test. 4.4 Tests Components shall be tested in accordance with the test methods specified in Table 1. 4.5 Test report The test report shall include the following data: a) part number or identificati
38、on; b) batch number and/or manufacturing date; c) tests method and results; d) copy of technical data sheet (TDS) and material safety data sheet (MSDS), if any (refer to Annex A); e) major test parameters, including conditioning and calibration. - 7 - HD 631.2 S1:2007 Table 1 - Fingerprinting: Test
39、methods and requirements Requirements Material property Test method Unit Deviation Comments Dimensions after full recovery aAnnex B - Inner diameter (d1) mm (+0/-10) %- Wall thickness (Wc) mm (+0/-10) % Density (measured without sealant) EN ISO 1183 g/cm3 5 % Differential scanning calorimetry (DSC)
40、bISO 11357-3 - Measured without sealant C 5 K - Measured with sealant C 5 K Thermal gravimetric analysis (TGA) bEN ISO 11358 Polymer: Weight loss Mean temperature % C 10 % 15 K Measured without sealantCarbon black: Weight loss Mean temperature Content % C % 10 % 15 K 2,5 Measured without sealantFill
41、er: Weight loss Mean temperature % C 10 % 15 K Measured without sealantSealant: Weight loss Mean temperature % C 10 % 15 K aTest to be run on component as received. For nominal value, refer to the product data sheet. bTest sequence and conditions shall be clearly recorded in the test reports. The sa
42、me sequence and conditions shall be used when the test is re-conducted; calibration details and the equipment type and model shall be the same.5 Type tests 5.1 General Tests shall be carried out based on the category of the heat shrinkable components as defined in Table 1. These tests are of such a
43、nature that, once successfully completed, they need not be repeated unless changes are made in the material, component formulation or manufacturing process, which might change the performance characteristics. HD 631.2 S1:2007 - 8 - 5.2 Sampling Samples for type testing shall be taken from material s
44、tored under conditions prescribed by the supplier. The type testing of heat shrinkable components shall be carried out either a) as a stand-alone test. Samples used for the type test shall be taken from material available as agreed between supplier and user, or b) in combination with an accessory ty
45、pe test. Samples used for the heat shrinkable components type test shall be taken from the same batch as used in the accessory type test. In the event that no material from the same batch is available, then the samples used for the type test shall be taken from material available as agreed between s
46、upplier and user. For each test, the number of samples of heat shrinkable components indicated in the test method shall be used. Samples shall be taken from original components as delivered in the batch, with or without sealant. In addition, for components with coated sealant, a sufficient additiona
47、l quantity of sealant material shall be supplied to the testing laboratory with correct identification in order to carry out the required physical tests. The corresponding technical data sheet (TDS) and material safety data sheet (MSDS), if any, shall be supplied. The general requirements in Annex C
48、 shall apply. 5.3 Preparation and conditioning Original components shall be individually prepared and conditioned according to the relevant test method conditions. For components with sealant, the sealant shall be removed when required in the remarks column of Table 2, Part B, before running the tes
49、t. 5.4 Tests 5.4.1 Components Components shall be tested in accordance with the test methods specified in Table 2. NOTE Mechanical tests on moulded part are carried out if possible on parts cut from the final product. If this is not possible, moulded test plaques should be made. 5.4.2 Sealant Tests on the sealant (hot melt or mastic) shall preferably be carried out on a sample of the sealant supplied as separate item with proper identification. If not possible, sufficient quantity shall be collected fr
