1、Test requirements for lowvoltage aerial bundledcable accessories Part 4: ConnectorsBS EN 50483-4:2009raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsNational forewordThis British Standard is the UK implementation of EN 50483-4:200
2、9.The UK participation in its preparation was entrusted by Technical CommitteeGEL/20, Electric cables, to Subcommittee GEL/20/11, Cable accessories.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the ne
3、cessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 56180 1ICS 29.240.20BRITISH STANDARDBS EN 50483-4:2009Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、the StandardsPolicy and Strategy Committee on 31 March 2009 Amendments issued since publicationAmd. No. Date Text affectedEUROPEAN STANDARD EN 50483-4 NORME EUROPENNE EUROPISCHE NORM January 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrote
5、chnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50483-4:2009 E ICS 29.240.20 English version Test requirements
6、for low voltage aerial bundled cable accessories - Part 4: Connectors Prescriptions relatives aux essais des accessoires pour rseaux ariens basse tension torsads - Partie 4: Connecteurs Prfanforderungen fr Bauteile fr isolierte Niederspannungsfreileitungen - Teil 4: Verbinder This European Standard
7、was approved by CENELEC on 2008-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning s
8、uch national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own
9、 language and notified to the Central Secretariat has the same status as the official versions. 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
10、, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 50483-4:2009EN 50483-4:2009 2 Foreword This European Standard was prepared by a sub-group of WG 11 of the Technical Committee CENEL
11、EC TC 20, Electric cables. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50483-4 on 2008-12-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endors
12、ement (dop) 2009-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-12-01 This is Part 4 of CENELEC standard EN 50483 “Test requirements for low voltage aerial bundled cable accessories”, which has six parts: Part 1: Generalities; Part 2: Tensio
13、n and suspension clamps for self supporting system; Part 3: Tension and suspension clamps for neutral messenger system; Part 4: Connectors; Part 5: Electrical ageing test; Part 6: Environmental testing. _ BS EN 50483-4:2009 3 EN 50483-4:2009 Contents 1 Scope . 4 2 Normative references 4 3 Terms and
14、definitions . 4 4 Symbols . 6 5 Characteristics 6 6 Marking 6 7 General test conditions . 7 7.1 Generalities . 7 7.2 Preconditioning of ABC 7 8 Type tests . 8 8.1 IPC tests . 8 8.2 Pre-insulated through connectors (sleeve) . 25 8.3 Pre-insulated terminals (lugs) 37 Annex A (informative) Temporary co
15、nnectors Temperature rise and overload test 43 Bibliography 47 Figures Figure 1 Test arrangement . 10 Figure 2 Typical impact test arrangement . 14 Figure 3 Illustrative arrangement for dielectrical test in water 16 Figure 4 Arrangement for dielectrical test in metallic balls . 17 Figure 5 Typical a
16、rrangement for dielectrical test with metallic gauze 18 Figure 6 Test arrangement for the water tightness test . 20 Figure 7 Orientation of the samples for the climatic ageing test . 24 Figure 8 Illustrative installation of the mechanical test . 26 Figure 9 Illustrative set up for dielectrical volta
17、ge test . 28 Figure 10 Climatic ageing test arrangement 31 Figure 11 Illustrative set up of the testing assembly 33 Figure 12 Diagram of thermal cycles and mechanical stresses applied on phase conductor 34 Figure 13 Diagram of thermal cycles and mechanical loads on neutral conductor 36 Figure 14 Ill
18、ustrative installation of the mechanical test . 38 Figure 15 Illustrative figure of immersed lug . 39 Figure 16 Illustrative arrangement of immersion test in sodium hydroxide solution 42 Figure A.1 Example of a pin connection 44 Figure A.2 Test loop . 45 Tables Table 1 Initial loads required for mar
19、king 26 Table 2 Test loads 26 Table 3 Applied tensile load 36 Table 4 Tensile loads . 38 BS EN 50483-4:2009EN 50483-4:2009 4 1 Scope EN 50483 series applies to overhead line fittings for tensioning, supporting and connecting aerial bundled cables (ABC) of rated voltage U0/U (Um): 0,6/1 (1,2) kV. Thi
20、s Part 4 applies to connectors used for the electrical connection of ABC. The connectors are designed to be installed on ABC defined in HD 626. Tests described in this document are type tests. NOTE This European Standard does not invalidate existing approvals of products achieved on the basis of nat
21、ional standards and specifications and/or the demonstration of satisfactory service performance. However, products approved according to such national standards or specifications cannot directly claim approval to this European Standard. It may be possible, subject to agreement between supplier and p
22、urchaser, and/or the relevant conformity assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this standard, provided an assessment is made of any additional type testing that may need to be carried out. Any such additional testing that is part o
23、f a sequence of testing cannot be done separately. 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 document (including
24、any amendments) applies. EN 50182:2001, Conductors for overhead lines Round wire concentric lay stranded conductors EN 50483 series, Test requirements for low voltage aerial bundled cable accessories EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) HD 626, Overh
25、ead distribution cables of rated voltage Uo/U(Um): 0,6/1 (1,2) kV IEC 60050-461, International Electrotechnical Vocabulary (IEV) Part 461: Electric cables 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-461 and the following apply. 3.1 aerial b
26、undled cable (ABC) aerial cable consisting of a group of insulated conductors which are twisted together including, or not, a non insulated conductor IEV 461-08-02, modified NOTE The terms bundled conductors, bundled cables, bundled cores, conductor bundles and bundle could be used as equivalent to
27、the term aerial bundled cable (ABC). 3.2 aerial-insulated-cable insulated cable designed to be suspended overhead and outdoors IEV 461-08-01 BS EN 50483-4:2009 5 EN 50483-4:2009 3.3 branch connector metallic device for connecting a branch conductor to a main conductor at an intermediate point on the
28、 latter IEV 461-17-05 3.4 branch conductor conductor connected to the main conductor by a connector 3.5 conductor insulation insulation applied on a conductor IEV 461-02-02, modified 3.6 conductor (of a cable) part of a cable which has the specific function of carrying current IEV 461-01-01 3.7 conn
29、ector metallic device to connect cable conductors together IEV 461-17-03 3.8 core assembly comprising conductor and its own insulation IEV 461-04-04, modified 3.9 insulation (of a cable) insulating materials incorporated in a cable with the specific function of withstanding voltage IEV 461-02-01 3.1
30、0 insulation piercing connector (IPC) connector in which electrical contact with the conductor is made by metallic protrusions which pierce the insulation of the ABC core IEV 461-11-08, modified 3.11 messenger wire or rope, the primary function of which is to support the cable in aerial installation
31、s, which may be separate from or integral with the cable it supports IEV 461-08-03 3.12 minimum breaking load (MBL) minimum breaking load of the conductor given by HD 626 or the cable manufacturer if not defined in the standard or minimum breaking load of the clamp given by the clamp manufacturer 3.
32、13 neutral messenger system aerial insulated system where only the neutral messenger supports the ABC BS EN 50483-4:2009EN 50483-4:2009 6 3.14 pre-insulated (terminal) lug insulated metallic device for connecting an insulated cable conductor to other electrical equipment 3.15 pre-insulated through c
33、onnector (sleeve) insulated metallic device for connecting two consecutive lengths of insulated conductors 3.16 rated tensile strength (RTS) estimate of the conductor breaking load calculated using the specified tensile properties of the component wires EN 50182:2001, 3.7 3.17 reusable connector con
34、nector for connecting ABC to stripped cable or bare conductor where only the branch connection can be reused 3.18 self supporting system aerial insulated system where all the cores of the ABC contribute to its support 3.19 sheath uniform and continuous tubular covering of metallic or non metallic ma
35、terial, generally extruded IEV 461-05-03 3.20 shear head head of a bolt, or a device fitted over the head of a bolt or a nut, which is designed to break at a specified torque 3.21 type test test required to be made before supplying a type of material covered by this standard on a general commercial
36、basis, in order to demonstrate satisfactory performance characteristics to meet the intended application NOTE These tests are of such a nature that, after they have been made, they need not be repeated unless changes are made to the accessory materials, design or type of manufacturing process which
37、might change the performance characteristics. 4 Symbols resistivity (.m) 5 Characteristics These connectors shall connect cables designed to HD 626 and withstand the following type tests. 6 Marking See Clause 6 of EN 50483-1. BS EN 50483-4:2009 7 EN 50483-4:2009 7 General test conditions See Clause
38、9 of EN 50483-1. 7.1 Generalities Minimum and maximum cross-sections of the conductors used for the tests shall be the minimum and maximum cross-sections for which the connector is designed. All conductors used in these tests shall be pre-conditioned in accordance with 7.2. When tensile test loads a
39、re applied to conductors the rate of increase shall be in accordance with EN 50483-1, 9.1.4. A torque meter shall be used for all tightening operations and it shall have a resolution and accuracy in accordance with EN 50483-1, 9.1.8. All tests shall be carried out at ambient temperature unless other
40、wise stated in this standard. The frequency of a.c. tests shall be in accordance with EN 50483-1, 9.1.1. The relative humidity shall be in accordance with EN 50483-1, 9.1.9 unless otherwise altered by this standard. If a cable breaks beyond any part of a connector, the test result shall be declared
41、void without discrediting the connector. Tests can be repeated using a new connector and a new cable. 7.2 Preconditioning of ABC New cores or cables shall be used. Cores shall be pre-conditioned according to of EN 50483-1, 9.1 in order to ensure the dimensional stabilisation of the insulating sheath
42、. The extremities of the service cables shall be installed into the connector in accordance with the instructions given by the connector manufacturer. For the voltage and water tightness tests in 8.1.3, if the connector is tested in horizontal position, the cores shall first be bent and held in a ri
43、gid position using an appropriate device in order to prevent damage to the connections during handling, as required in the specific test. For the climatic ageing test in 8.1.5.2, the cores shall be bent as for the dielectrical voltage and water tightness tests and their ends shall be tightly capped
44、to prevent moisture from penetrating the conductors, as required in the specific test. When there is a requirement to bend the cables, the bending radius shall be at least 15 times the outer diameter of the core. NOTE 1 It is recommended that the cores should be shaped before installing the connecto
45、rs. NOTE 2 Cores used should comply with the piercing test of the insulating sheath defined in HD 626 where the customer requires this and it is applicable to the type of cable being tested. BS EN 50483-4:2009EN 50483-4:2009 8 8 Type tests 8.1 IPC tests 8.1.1 Installation of IPCs Connectors shall be
46、 installed in accordance with the manufacturers instructions. A torque meter, in accordance with EN 50483-1, 9.1.8, shall be used for all tightening and untightening operations. Tightening shall be at the rate specified in EN 50483-1, 9.1.10. The same core (e.g. Phase 1) of a cable with the same cro
47、ss-section shall be used for each test. Connectors, used on cores with a cross-section lower than, or equal to, 35 mm, can be held in position during tightening if necessary. 8.1.2 Mechanical testing The following tests are designed to ensure that the IPC is both mechanically sound and does not dama
48、ge the conductors it connects: Test Subclause Test for mechanical damage to the main conductor 8.1.2.1 Branch cable pull-out test 8.1.2.2 Connector bolt tightening test 8.1.2.3 Shear head function test 8.1.2.4 Low temperature impact test 8.1.2.5 8.1.2.1 Test for mechanical damage to the main conduct
49、or 8.1.2.1.1 Principle This test ensures that the mechanical performance of the conductor is not impaired as a consequence of the installation of the IPC. BS EN 50483-4:2009 9 EN 50483-4:2009 8.1.2.1.2 Test arrangement Two samples shall be tested. Where the IPC is designed to accept more than one size of core, 2 samples shall be tested in each of the following conductor combinations: Main Branch max. max.min. min. min. max.N
