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1、BRITISH STANDARD BS 6910-1: 1988 Cold pour resin compound and heat-shrink cable joints in the voltage range up to 1000 V a.c. and 1500 V d.c. Part 1: Specification for materials UDC 621.315.2:621.315.68 + 678.043.93:006.82:621.3.025 + 621.3.024 + 621.3.027.5:006.82:001.4:614.8 Licensed Copy: sheffie
2、ldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6910-1:1988 This British Standard, having been prepared under the direction of the General Electrotechnical Engineering Standards Committee, was published under the authority of the Board of BSI and comes into ef
3、fect on 30 November 1988 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference GEL/3 Draft for comment 85/30753 DC ISBN 0 580 16415 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the General Ele
4、ctrotechnical Engineering Standards Committee (GEL/-) to Technical Committee GEL/3 upon which the following bodies were represented: Aluminium Federation Association of Consulting Engineers Association of Manufacturers of Domestic Electrical Appliances British Approvals Service for Electric Cables B
5、ritish Plastics Federation British Railways Board British Shipbuilders British Telecommunications plc Department of Energy (Electricity Division) Department of the Environment (Property Services Agency) Department of Trade and Industry (Consumer Safety Unit, C A Division) ERA Technology Ltd. Electri
6、c Cable Makers Confederation Electricity Supply Industry in England and Wales Engineering Equipment and Materials Users Association Institution of Electrical Engineers London Regional Transport The following bodies were also represented in the drafting of the standard, through subcommittees and pane
7、ls: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) Department of Transport (Highways) Electrical Contractors Association Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Health and Safety Executive Institution of Mechanical Engineer
8、s Ministry of Defence Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6910-1:1988 BSI 07-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2De
9、finitions1 3Classification of joints and cables2 4Health and safety3 5Materials, design and manufacture3 6Performance4 7Marking and labelling, packaging and information to be given by the manufacturer6 Appendix A Information to be supplied by the purchaser7 Appendix B Method for measuring gel time o
10、f cold pour resin systems7 Appendix C Pouring and setting properties of cold pour resin compounds8 Appendix D Methods of test for heat-shrinkable tubing and moulded components8 Appendix E Methods of test for armour and/or metallic screen continuity and earthing connections10 Appendix F Method for me
11、asuring exotherm temperature11 Appendix G Electric strength (proof) test11 Appendix H Performance tests on joints11 Figure 1 Minimum dimensions of resin compound at cable entry position15 Figure 2 Test circuit for armour and/or metallic screen continuity and earthing connections16 Figure 3 Test mand
12、rel for heat shock test17 Figure 4 Apparatus for electric strength (proof) test17 Figure 5 Typical impact test apparatus for cable joints with detail of tool18 Figure 6 Typical arrangement of cable joints in pressure vessel19 Figure 7 Diagram showing method of connection of mains and service cables
13、when testing a mains service joint20 Figure 8 Diagram showing method of connection to three-phase cables when testing straight joints21 Figure 9 Diagram showing method of connection of three-phase mains and branch cables, of equal size, when testing a branch joint22 Figure 10 Diagram showing method
14、of connection of three-phase mains and branch cables, of unequal size, when testing a branch joint23 Table 1 Requirements for heat-shrinkable components4 Table 2 Minimum insulation thickness4 Table 3 Dimensions of test mandrel for heat shock test8 Table 4 Dimensions of test mandrel for low temperatu
15、re flexibility test8 Table 5 Points of impact for impact test13 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6910-1:1988 ii BSI 07-1999 Foreword This Part of BS 6910 has been prepared under the
16、 direction of the General Electrotechnical Engineering Standards Committee. It is based on a joint proposal submitted by the Electricity Supply Industry in England and Wales and the Engineering Equipment and Materials Users Association. BS 6910-2, which is in preparation, will be a code of practice
17、for making cable joints on site using these materials. This Part of BS 6910 may be used for the purchase of both complete joint kits and separate items. It has been assumed in the preparation of this Part of BS 6910 that the execution of its provisions will be entrusted to appropriately qualified an
18、d experienced people. This Part of BS 6910 requires the use of substances and/or procedures that 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.
19、Purchasers ordering to this Part of BS 6910 are advised that BS 5750 is the specification that identifies the requirements of the quality management system applicable to the manufacturer. Reference to BS 5750-2 in the purchase order or contract and acknowledgement of this fact by the manufacturer wi
20、ll provide confidence that the quality management system operated by the supplier incorporates the controls necessary to ensure consistent quality of the product. Appendix A gives information to be supplied by the purchaser. A British Standard does not purport to include all the necessary provisions
21、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 24, an ins
22、ide back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (
23、c) BSI BS 6910-1:1988 BSI 07-19991 1 Scope This Part of BS 6910 specifies requirements for materials supplied in kits for making cable joints in the voltage range up to 1 000 V a.c. and 1 500 V d.c., in which the cable insulation reinstatement is effected by cold pour resin compound and special-purp
24、ose insulating and sealing tapes and mastic, or heat-shrink components. The joints covered include those suitable for cables having conductors of copper or aluminium with paper or polymeric insulation, which can have metallic protection against ingress of moisture in the form of extruded aluminium o
25、r lead sheaths, steel tape or wire, aluminium strip or wire armouring (including combined neutral and earth (CNE) cables). The oversheath of these cables will normally be a polymeric or bitumenized hessian covering. The joints are suitable for use when buried, provided that the conditions are within
26、 the operating limits of the cable. In order to verify compliance it is necessary to assemble and test sample joints in accordance with this Part of BS 6910. This Part of BS 6910 does not cover all the requirements for joints used on submarine cables or the requirements necessary for use in explosiv
27、e or otherwise hazardous situations (e.g. where jointing of cables such as fire retardant cables is necessary or where seismic performance is required). Neither does it include material for joints normally requiring the use of hot pour insulating and sealing compounds, lead sleeves and cast iron or
28、alternative outer boxes. Unless otherwise stated by the manufacturer in the jointing instructions, the joints covered by this Part of BS 6910 are not intended to be made while the cables are energized. NOTE 1For details of jointing procedures and practices see BS 6910-21). NOTE 2The titles of the pu
29、blications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS 6910 the following definitions apply. 2.1 cold pour resin compound a resin system capable of being poured at ambient temperature and that cures to a solid state by an irreve
30、rsible chemical reaction without the application of external heat 2.2 gel time the period required for a cold pour resin to reach a level of cure as determined in accordance with Appendix B 2.3 pot life the period from commencement of adding the reactive agents of the cold pour resin compound during
31、 which it may be poured without affecting its performance 2.4 mains cable a cable in which each phase conductor has a cross-sectional area greater than or equal to 70 mm2 or its imperial equivalent 2.5 armour and/or metallic screen continuity and earthing connections connections between the earth po
32、tential components of the cables in the joint 2.6 heat-shrinkable components expanded polymeric extruded tubings or moulded parts that undergo thermally activated recovery when heated to an appropriate temperature 2.7 recovery (of heat-shrink material) the thermally activated retraction of heat-shri
33、nk extruded tubing or moulded parts NOTERecovery may be complete and unimpeded (full recovery) or may take place on to a solid substrate such as a cable core. 2.8 service cable a cable in which each phase conductor has a cross-sectional area less than or equal to 50 mm2 or its imperial equivalent 2.
34、9 CNE (combined neutral and earth) cable a cable in which the neutral conductor is also the earth continuity conductor 2.10 SNE (separate neutral and earth) cable a cable in which the neutral conductor is separate from and insulated from the earth continuity conductor 1) In preparation. Licensed Cop
35、y: sheffieldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6910-1:1988 2 BSI 07-1999 2.11 single-phase cable a twin or concentric cable consisting of one phase conductor and one neutral conductor (e.g. CNE) or consisting of one phase, one neutral and one earth
36、continuity conductor (e.g. SNE) 2.12 three-phase cable a cable having three phase conductors with or without a neutral conductor, or a combined neutral and earth continuity conductor 2.13 mains straight joint a connection between two mains cables 2.14 mains branch joint a connection of a branch main
37、s cable to a mains cable 2.15 mains service joint a connection of one or more branch service cables to a mains cable 2.16 service cable joint a connection between two or more service cables 2.17 transition joint a connection between cables having different types of insulation 2.18 stop end an access
38、ory providing a means of insulating an energized buried cable end 2.19 compression connector a device for making a connection between a conductor and a connector by pressure-forming or reshaping the connector barrel 2.20 mechanical connector a device for making a connection between a conductor and a
39、 connector solely by means of a screw or bolt 2.21 backfill time the time after which a joint may be subjected to the mechanical stresses of backfill/consolidation without deleterious effect 3 Classification of joints and cables 3.1 Joints For the purposes of this Part of BS 6910 the following joint
40、s are classified in accordance with the types of cables to be connected: a) mains cable joints: straight joints and branch joints on mains cables; b) mains service joints: service cables connected to mains cables; c) service cable joints: straight joints and branch joints on service cables; d) stop
41、ends: mains or service cables. NOTE 1Unless otherwise stated, jointing kits supplied for each of the above types of joint are suitable for joining cables of the same type only. NOTE 2The designation “transition” when applied to the above types of joint indicates that they are suitable for joining ca
42、bles of different types. 3.2 Cable types For the purposes of this Part of BS 6910 the following cable types are classified: a) paper insulated, lead sheathed, single-core or multicore type, armoured or unarmoured cables to BS 6480; b) PVC insulated, single-core or multicore type, armoured or unarmou
43、red cables to BS 6346; c) extruded cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR) insulated, CNE cables to ESI Standard 09-92); d) paper insulated, aluminium sheath/neutral conductor (Consac) cables to BS 5593 (use as mains cable only); e) thermosetting insulated, armoured cable
44、s to BS 5467 and BS 6724; f) cables generally to ESI Standard 09-72) having either PVC or XLPE insulation (use as service cable only). NOTEThe extent to which tests on one cable type can be extended to another cable type is given in 6.2.1. 2) Available from the Engineering Document Unit, CEGB, 18 Wa
45、rwick Lane, London EC4P 4EB. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:40:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6910-1:1988 BSI 07-19993 4 Health and safety The manufacturer shall make available to the purchaser such information concerning the cold pour resin compound as w
46、ill enable the purchaser and his employees: a) to be aware of the recommended immediate action in the case of the compounds coming in contact with skin, eyes or clothing; b) to transport the compound outside the purchasers premises in a manner complying with any regulations relevant to the mode of t
47、ransport to be used. The manufacturer shall ensure that all the packages in which the compounds are supplied and the information given on these packages comply with the Classification, Packaging and Labelling of Dangerous Substances Regulations 1984, where applicable. The manufacturer shall also mak
48、e available such information as will enable the purchaser to use the compound in a safe manner in accordance with the Health and Safety at Work etc. Act 1974 and to dispose of any unwanted compound and used containers in accordance with the Control of Pollution Act 1974. 5 Materials, design and manu
49、facture 5.1 Conducting metal parts 5.1.1 Core conductor connections: soldered connectors. Soldered connectors shall only be used if the short circuit performance requirement limits the temperature to 160 C maximum. Weak back ferrules to ESI Standard 12-152) shall be used for the connection of copper and aluminium conductors. 5.1.2 Armour and/or metallic screen continuity and earthing connections. The components of the armour continuity connections shall not cause damage to the cable components. In joints for metallic sheathed or wire-armou