1、PAS 74:2008Internet safety Access control systems for the protection of children online SpecificationICS 35.040; 35.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWPUBLICLY AVAILABLE SPECIFICATIONControl and instrumentation cablesPart 2: Specification for PVC insulated cable
2、sI LY CIFICATIONPAS 5308-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSIPAS 5308-2:2009Publishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2009 ISBN 978 0 58
3、0 67117 3ICS 29.060.20No copying without BSI permission except as permitted by copyright lawPublication historyFirst published July 2009Amendments issued since publicationDate Text affected Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSI BSI 2009 i
4、PAS 5308-2:2009ContentsForeword iiiIntroduction 11 Scope 12 Normative references 13 Terms and definitions 24 Conductor 25 Insulation 26 Laying up 37 Outer protection 58 Cable marking 69 Electrical testing 710 Finished cable testing 8AnnexesAnnex A (informative) Handling and usage at various temperat
5、ures 9Annex B (informative) Guide to use 10Annex C (normative) Core and pair identification 14Annex D (normative) Constructional dimensions 16Annex E (normative) Voltage test 22Bibliography 23List of tablesTable 1 Details of conductors and insulation thickness 2Table 2 L/R ratios for adjacent cores
6、8Table B.1 Minimum installation radius of bend 10Table B.2 Test voltages after installation 11Table C.1 Identification of cable pairs other than two-pair cables without individual pair screens (quads) 15Table D.1 Dimensions of 0.5 mm2class 5 conductor multicore PVC insulated cables 16Table D.2 Dimen
7、sions of 0.5 mm2class 5 conductor multipair PVC insulated cables without individual pair screens 16Table D.3 Dimensions of 0.5 mm2class 5 conductor multipair PVC insulated cables with individual pair screens 17Table D.4 Dimensions of 0.75 mm2class 5 conductor multicore PVC insulated cables 17Table D
8、.5 Dimensions of 0.75 mm2class 5 conductor multipair PVC insulated cables without individual pair screens 18Table D.6 Dimensions of 0.75 mm2class 5 conductor multipair PVC insulated cables with individual pair screens 18Table D.7 Dimensions of 1.5 mm2class 2 conductor multicore PVC insulated cables
9、19Table D.8 Dimensions of 1.5 mm2class 2 conductor multipair PVC insulated cables without individual pair screens 19Table D.9 Dimensions of 1.5 mm2class 2 conductor multipair PVC insulated cables with individual pair screens 20Table D.10 Dimensions of 2.5 mm2class 2 conductor multicore PVC insulated
10、 cables 20Table D.11 Dimensions of 2.5 mm2class 2 conductor multipair PVC insulated cables without individual pair screens 21Table D.12 Dimensions of 2.5 mm2class 2 conductor multipair PVC insulated cables with individual pair screens 21Summary of pagesThis document comprises a front cover, an insid
11、e front cover, pages i to iv, pages 1 to 24, an inside back cover and a back cover.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSIPAS 5308-2:2009ii BSI 2009This page deliberately left blankLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/1
12、1/2009 08:00, Uncontrolled Copy, (c) BSI BSI 2009 iiiPAS 5308-2:2009ForewordPublishing informationThis Publicly Available Specification (PAS) was sponsored by the British Cables Association (BCA) with the support of the Electrical Contractors Association (ECA). It was developed by BSI and came into
13、effect on 3 July 2009.1Acknowledgement is given to the following organizations that were involved in the development of this specification as members of the Steering Group. British Cables Association British Approvals Service for Cables Electrical Contractors Association ERA Technology Limited Minis
14、try of Defence UK Defence StandardizationAcknowledgement is also given to the members of a wider Review Panel who were consulted in the development of this specification.BSI retains ownership and copyright of this PAS. BSI reserves the right to withdraw or amend this PAS on receipt of authoritative
15、advice that it is appropriate to do so. This PAS will be reviewed at intervals not exceeding two years, and any amendments arising from the review will be published as an amended PAS and publicized in Update Standards.This PAS is not to be regarded as a British Standard.The PAS process enables a spe
16、cification to be rapidly developed in order to fulfil an immediate need in industry.Relationship with other publicationsThis PAS is issued in two parts: Part 1: Specification for polyethylene insulated cables Part 2: Specification for PVC insulated cablesThis part is based on BS 5308-2:1986, which w
17、as superseded by BS EN 50288-7:2005.It takes into account the following recently published harmonized European standards which supersede key British Standards: BS EN 60228:2005, a specification for conductors of insulated cables, which superseded BS 6360:1991; and BS EN 62230:2007, a sparktest metho
18、d, which exists alongside BS 5099:2004. WARNING. This PAS calls for the use of substances and/or procedures that can 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 safet
19、y at any stage.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSIPAS 5308-2:2009iv BSI 2009Use of this documentIt has been assumed in the preparation of this PAS that the execution of its provisions will be entrusted to appropriately qualified and exp
20、erienced people, for whose use it has been produced.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative mater
21、ial is presented in smaller italic type, and does not constitute a normative element. The word “should” is used to express recommendations, the word “may” is used to express permissibility and the word “can” is used to express possibility, e.g. a consequence of an action or an event.Contractual and
22、legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a PAS cannot confer immunity from legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00,
23、Uncontrolled Copy, (c) BSI BSI 2009 1PAS 5308-2:2009IntroductionThis part of PAS 5308 has been developed to incorporate additional aspects not covered in the European standard for control and instrumentation cables, BS EN 50288-7. In particular this part of PAS 5308: a) covers circumstances where hi
24、gher voltages are encountered and as such specifies cables that are suitable for more demanding applications, for example, in petrochemical plants; andb) gives detailed constructional tables, showing actual dimensions for the full range of cable types as previously specified in BS 5308-2:1986 and as
25、 such maintains the availability of such data, which is required by stakeholders as a tool for design, manufacture, testing and selection.The contribution of the cables to fire hazard can pose a significant risk. The fire performance of cables is not covered. However, attention is drawn to the fact
26、that safety systems or national and local regulations might specify requirements for either resistance to fire performance (e.g. circuit integrity under fire) and/or reaction to fire performance (e.g. low emission of smoke and corrosive and acidic gases and propagation of fire).1 ScopeThis part of P
27、AS 5308 specifies requirements for and dimensions of PVC insulated control and instrumentation cables in multicore and multipair construction, with or without screens, and optionally incorporating single wire armour.It categorizes cables into:a) type 1: PVC insulated and PVC sheathed; andNOTE These
28、cables are not recommended for underground burial.b) type 2: PVC insulated, PVC bedded, single wire armoured and PVC oversheathed.The cables are suitable for operation at voltages up to and including 300 V r.m.s. core to earth and 500 V r.m.s. core to core (i.e. 300/500 V). These cables are not prim
29、arily intended for direct connection to a low impedance source, such as the public electricity supply.NOTE 1 Guidance on the safe handling, especially at low temperatures, for PVC sheathed cables is given in Annex A.NOTE 2 Guidance on use is given in Annex B. It includes guidance on installation.2 N
30、ormative referencesThe 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 any amendments) applies.BS 5099, Electric cables Voltag
31、e levels for spark testingBS 5467:1997, Electric cables Thermosetting insulated, armoured cables for voltages of 600/1 000 V and 1 900/3 300 VLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSIPAS 5308-2:20092 BSI 2009BS EN 10257-1, Zinc or zinc alloy
32、coated non-alloy steel wire for armouring either power cables or telecommunication cables Part 1: Land cablesBS EN 50290-2-21:2002, Communication cables Part 2-21: Common design rules and construction PVC insulating compoundsBS EN 50290-2-22:2002, Communication cables Part 2-22: Common design rules
33、and construction PVC sheathing compoundsBS EN 50290-2-24:2002, Communication cables Part 2-24: Common design rules and construction PE sheathingBS EN 50334, Marking by inscription for the identification of cores of electric cablesBS EN 60228:2005, Conductors of insulated cablesBS EN 62230, Electric
34、cables Spark-test methodPD 2379, Register of colours of manufacturers identification threads for electric cables and cordsIEC 60050-461, International Electrotechnical Vocabulary Part 461: Electric cables3 Terms and definitionsFor the purposes of this PAS the definitions given in IEC 60050-461 apply
35、.4 ConductorA conductor shall conform to Table 1.Table 1 Details of conductors and insulation thicknessConductor Insulation thickness Maximum core diameterNominal cross-sectional areaBS EN 60228:2005 conductor classMaximum resistance at 20 C Nominal MinimumMulticore Multipair A)mm2W/km W/km mm mm mm
36、0.50 5 39.0 39.7 0.60 0.50 2.350.75 5 26.0 26.5 0.60 0.50 2.551.50 2 12.1 12.3 0.60 0.50 3.002.50 2 7.4 7.6 0.60 0.50 3.25A)These resistance values are 2% higher than the values in BS EN 60228:2005 to allow for cables of multipair construction.5 InsulationInsulation shall be of a PVC insulation comp
37、ound conforming to BS EN 50290-2-21:2002, grade TI51.The thickness of the insulation shall conform to Table 1.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00, Uncontrolled Copy, (c) BSI BSI 2009 3PAS 5308-2:20096 Laying up6.1 PairsTwo insulated conductors shall be twisted tog
38、ether to form a pair. The lengths of lay used shall be such that the two cores forming each pair are not dissociated by normal handling.The length of lay of any pair shall not exceed 100 mm.6.2 Two-pair cables without individual pair screens (quads)Two-pair cables without individual pair screens (qu
39、ads) shall have four cores laid in quad formation round a central dummy.6.3 Core and pair identification6.3.1 Multicore cablesCores in muticore cables shall be identified in accordance with C.1.6.3.2 Multipair cables without individual pair screensUnscreened pairs in multipair cables shall be identi
40、fied either:a) by means of coloured insulation in the sequence specified in C.2, starting at the centre; orb) by each pair in the cable having one black and one blue core. Each core shall also be identified through marking by inscription of a number on the cores insulation in accordance with BS EN 5
41、0334. Both cores in a pair shall be marked with the same number.6.3.3 Multipair cables with individual pair screensScreened pairs in multipair cables shall be identified either:a) by means of coloured insulation in the sequence specified in C.2, starting at the centre; orb) by each pair in the cable
42、 having one black and one blue core. Each pair shall be covered in a numbered polyester film. The numbering shall be such that each pair is distinguishable from any other pairs in the cable. The distance between each number shall not be greater than 50 mm.NOTE The numbered polyester film may also se
43、rve as part of the pair screen.6.4 Pair screensWhen individual pair screens are used, each pair shall have a laminated screening tape applied a minimum overlap 25% with the metallic side down in electrical contact with a drain wire.The laminated screening tape shall comprise aluminium bonded to poly
44、ester with a minimum thickness of aluminium of 0.008 mm and a minimum thickness of polyester of 0.010 mm.The drain wire shall comprise one or more tinned annealed copper wires with a total cross-section of not less than 0.5 mm2.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/11/2009 08:00,
45、 Uncontrolled Copy, (c) BSIPAS 5308-2:20094 BSI 2009Over the screening tape, either two polyester tapes shall be applied with a minimum overlap of 25%, or one polyester tape shall be applied with a minimum overlap of 50%.6.5 Cabling of pairsThe required number of pairs shall be assembled together us
46、ing the reverse layer or reciprocating lay technique. The cable shall be so constructed that the pairs are in concentric layers.NOTE 1 Non-hygroscopic fillers may be used to maintain a circular formation.NOTE 2 The number of pairs should preferably be 1, 2, 5, 10, 15, 20, 30 or 50.6.6 Binder tape6.6
47、.1 Cables without a collective screenCables without a collective screen shall be bound with a non-hygroscopic binder tape of minimum thickness 0.023 mm with a minimum overlap of 25%.NOTE Open spiral interlayer tape may also be applied.6.6.2 Cables with a collective screen6.6.2.1 Collectively screene
48、d cables other than one-pair cablesCollectively screened cables other than one-pair cables shall be bound with either:a) a non-hygroscopic binder tape of minimum thickness 0.023 mm with an overlap of 50%; orb) two non-hygroscopic binder tapes each of minimum thickness 0.023 mm each with a minimum ov
49、erlap of 25%.NOTE Open spiral interlayer tape may also be applied.6.6.2.2 Collectively screened one-pair cablesCollectively screened one-pair cables shall either:a) be bound in accordance with 6.6.2.1; orb) no binder tape shall be applied (see 6.7.4).6.7 Cables with a collective screen6.7.1 GeneralWhere specified in 6.7.2 and 6.7.3:a) laminated screening tape shall comprise aluminium bonded to polyester, with a minimum thickness of aluminium of 0.008 mm and a minimum thickness of polyester o
