1、BRITISH STANDARDBS 7933-1:2007 HD 631.1 S2:2007Electric cables Accessories Material characterisation Part 1: Fingerprinting and type tests for resinous compoundsICS 29.035.20; 29.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55
2、g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS 7933-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2008 BSI 2008ISBN 978 0 580 60153 8National forewordThis British Standard is the UK im
3、plementation of HD 631.1 S2:2007. It supersedes BS 7933-1:1998 which is withdrawn. Together with BS 7933-2:2007 and BS EN 50393:2006 it supersedes BS 6910-1:1988 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee G
4、EL/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 provisions of a contract. Users are responsible for its correct application. Amendments/corrigenda issued since
5、 publicationDate CommentsHARMONIZATION DOCUMENT HD 631.1 S2 DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT December 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretari
6、at: rue de Stassart 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 631.1 S2:2007 E ICS 29.035.20 Supersedes HD 631.1 S1:1998English version Electric cables - Accessories - Material characterisation - Pa
7、rt 1: Fingerprinting and type tests for resinous compounds Cbles lectriques - Accessoires - Caractrisation des matriaux - Partie 1: Essais didentification et essais de type pour les composs rsineux Kabel und isolierte Leitungen - Garnituren - Materialcharakterisierung - Teil 1: Fingerprnt- und Typpr
8、fungen fr Reaktionsharzmassen 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 implementation of this Harmonization Document at national level. Up-to-date lists and bibl
9、iographical 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 (English, French, German). CENELEC members are the national electrotechnical committees of
10、 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, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingd
11、om. HD 631.1 S2:2007 - 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 and was approved by CENELEC as HD 631.1 S2 on 2007-09-01. This Harmonization Document su
12、persedes HD 631.1 S1:1998. 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 standard or by endorsement (dop)
13、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 components for low voltage application
14、s 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 in the preparation of this do
15、cument 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 not t
16、aken. 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 631.1 S2:2007 Contents 1 Scope4 2 Normative references.4 3 Terms and definitions5 4 Classification .6 5 Fingerprinting 6 5.1 General6 5.2 Sampling
17、6 5.3 Preparation and conditioning7 5.4 Sequence of tests.7 5.5 Test report7 6 Type tests.9 6.1 General9 6.2 Sampling9 6.3 Preparation and conditioning9 6.4 Tests10 6.5 Test report10 7 Test methods .14 7.1 General14 7.2 Pot life .14 7.3 Exotherm peak.15 7.4 Dry ageing16 7.5 Wet ageing (hydrolytic st
18、ability)16 7.6 Curing under water.16 Annex A (informative) Health and safety 19 Annex B (normative) Information on supply, packaging, marking and labelling.20 Annex C (normative) Test methods for fingerprinting Dry ageing test21 Annex D (normative) Test sequence and test method for type tests Dry ag
19、eing test.23 Annex E (normative) Test sequence and test method for type test Wet ageing test (hydrolytic stability)25 Figure 1 - Test apparatus for curing under water test.18 Table 1 - Categories of resinous compounds.6 Table 2 - Fingerprinting tests: Test methods and requirements .9 Table 3 - Type
20、tests: Test methods and requirements.12 HD 631.1 S2:2007 - 4 - 1 Scope This Harmonization Document specifies the test methods and requirements of tests for a) fingerprinting (as defined in 3.12), b) type testing (as defined in 3.13) of solvent-free polymerizable, reacting resinous compound intended
21、to be used for electrical insulation and mechanical protection in cable accessories covered by EN 50393, HD 629.1 S2 and HD 629.2 S2, for low and medium voltage up to 20,8/36 (42) kV. Fingerprinting and type testing of materials do not have a mandatory link to type testing of accessories. They shall
22、 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 application of this document. For dated references, o
23、nly 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 0,6/1,0 (1,2) kV EN 60243-1, Electrical strength of insulat
24、ing materials Test methods Part 1: Test at power frequencies (IEC 60243-1) EN 612342, Electrical insulating materials Methods of test for the hydrolytic stability Part 2: Moulded thermosets (IEC 61234-2) HD 429, Methods of test for volume resistivity and surface resistivity of solid electrical insul
25、ating materials (IEC 60093) 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(7,2) kV up
26、to 20,8/36(42) kV Part 2: Cables with impregnated paper insulation EN ISO 179, Plastics Determination of Charpy impact strength (ISO 179) EN ISO 291, Plastics Standard atmospheres for conditioning and testing (ISO 291) EN ISO 527 series, Plastics Determination of tensile properties (ISO 527 series)
27、EN ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868) EN ISO 1183 series, Plastics Methods for determining the density of noncellular plastics (ISO 1183 series) EN ISO 2555, Plastics Resins in the liquid state or as emulsions or dis
28、persions Determination of apparent viscosity by the Brookfield test method (ISO 2555) EN ISO 2592, Determination of flash and fire points Cleveland open cup method (ISO 2592) EN ISO 3521, Plastics Unsaturated polyester and epoxy resins Determination of overall volume shrinkage (ISO 3521) EN ISO 4895
29、, Plastics Liquid epoxy resins Determination of tendency to crystallize (ISO 4895) IEC 60050-461, International Electrotechnical Vocabulary Chapter 461: Electric cables IEC 60250, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating
30、 materials at power, audio and radio frequencies including metre wavelengths ISO 7056, Plastics laboratory ware Beakers - 5 - HD 631.1 S2:2007 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 resinous
31、 compound compound for cable accessories made by the mixture of at least two components (resin and reagent) NOTE For some applications additional components such as filler may be needed. 3.2 resin liquid organic material that cures as a result of polymerization by means of reagents (e.g. hardener or
32、 accelerator) without releasing additional volatile products 3.3 reagent substance or compound of substances which causes, when added to resin, hardening of resin by cross-linking of molecules or accelerates hardening of resin 3.4 pot life time available to mix the components of the resinous compoun
33、d together and pour or inject the compound into the cable accessory, such that it continues to flow smoothly and cohesively 3.5 “use before” date (shelf-life) date until which a resinous compound, when stored under specified conditions of temperature and humidity, retains specified properties 3.6 de
34、nsity ratio of mass to volume 3.7 tendency to crystallization measurement of the ability of epoxy base resin not to change state (liquid to solid) by a certain temperature close to water freezing point for a fixed time 3.8 exotherm peak temperature highest temperature that is reached during the hard
35、ening process of a defined volume of a resinous compound after mixing at a defined temperature 3.9 hardness measurement of the resistance of a material to indentation by means of durometers or by penetration of a needle (soft material) 3.10 hydrolytic stability measurement of the resistance to hydro
36、lytic degradation of resinous compounds exposed to the simultaneous influence of water and temperature, which may lead to an irreversible change in mechanical and or electrical properties of the compound 3.11 fingerprinting tests made to establish and subsequently confirm the properties of materials
37、 or components used in cable accessories HD 631.1 S2:2007 - 6 - 3.12 type test tests made on materials or components of a cable accessory in order to demonstrate satisfactory performance characteristics to meet the intended application 3.13 deviation variation of a property between the initial test
38、values and the test values measured on new samples at a later date 3.14 initial test tests made to establish the properties of materials or components used in cable accessories 4 Classification Resinous compounds are classified according to their application in categories as follows: Table 1 - Categ
39、ories of resinous compounds Voltage Class Function Characteristic Low Voltage (L) Mechanical Protection (MP) Medium Voltage (M) Insulation (I) Cures in water (W) Cures at low temperature (LT) Cures at high temperature (HT) A resinous compound is identified by a combination of categories. For example
40、: Low voltage compound for mechanical protection, curing at high temperature: LMP-HT; Low voltage compound for insulation, curing in presence of water: LI-W; Low voltage compound for insulation Stage 2: resinous compound just after mixing (curing stage); Stage 3: cured resinous compound (original);
41、Stage 4: cured resinous compound after thermal ageing (dry). 5.5 Test report The test report shall include the following data: 1) resin category and identification; 2) batch number or identification; 3) marking and labelling according to material safety data sheet (MSDS); 4) test methods and results
42、; 5) major test parameters, including conditioning and calibration, if any; 6) processing conditions to mix the compound; 7) copy of technical data sheet (TDS) and MSDS. HD631.1S2:2007-8-Table 2 Fingerprinting tests: Test methods and requirements Number Property Test method Units Max. acceptable dev
43、iation aComments Resin categories LMP/LMPW/ MMP/MMPW LI/LIW MI/MIW Applies to all combinations with LT or HT resin types Stage 1 Individual components prior to mixing 1 Viscosity EN ISO 2555 Pa.s 10 % 10 % Stage 2 Resinous compound just after mixing (curing stage) 2 Pot life (0,3 l at 23 C) 7.2 min
44、25 % 25 % 3 Exotherm at 23 C Peak temperature Time to peak 7.3 C min 10 % 20 % 10 % 20 % Stage 3 Cured resinous compound (original) 4 Density non-filled compound Density filled compound EN ISO 1183-1 EN ISO 1183-1 g/cm3 g/cm3 2 % 5 % 2 % 5 % 5 Impact strength (without notch) EN ISO 179 kJ/m 25 % 25
45、% Only for Epoxy and Acrylic resins 6 Shore hardness EN ISO 868 5 5 7 Tensile strength EN ISO 527 MPa 25 % - 8 Elongation at break EN ISO 527 % 25 % - 9 Volume resistivity HD 429 .cm - 10 % Stage 4 Cured resinous compound after thermal ageing (dry) 10 Weight loss Annex C 20 % 20 % 11 Change in impac
46、t strength (without notch) Annex C 25 % 25 % Only for Epoxy and Acrylic resins aFrom value for original batch of compound. - 9 - HD 631.1 S2:2007 6 Type tests 6.1 General Tests shall be carried out based on the category of the resinous compound as defined in Table 1. These tests are of such a nature
47、 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. 6.2 Sampling Samples for type testing shall be taken from material stored under conditions prescr
48、ibed by the supplier. The type testing of resinous compound 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 type test. Samples used for the resinou
49、s compound 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, the samples used for the resinous compound type test shall be taken from material available as agreed between supplier and user. 6.3 Preparation and conditioning 6.3.1 General For all tests, unless otherwise specified, conditioning shall be made in accordance with EN ISO 291 using atmosphere
