1、BSI Standards PublicationBS 4737-3.30:2015Intruder alarm systems inbuildingsPart 3: Specifications forcomponentsSection 3.30: Specification forinsulated and sheathed cables forinterconnecting wiringPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when
2、 the documentwas last issued. The British Standards Institution 2015Published by BSI Standards Limited 2015ISBN 978 0 580 85416 3ICS 13.310The following BSI references relate to the work on this document:Committee reference GW/1/1Draft for comment 14/30295317 DCPublication historyFirst edition June
3、1986Second (current) edition February 2015Amendments issued since publicationDate Text affectedBS 4737-3.30:2015 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative references 13 Terms, definitions and abbreviations 14 Cable construction types 35 Conductors 46 Materials of core, insulation and s
4、heathing 47 Marking/labelling and packaging 58 Tests 6AnnexesAnnex A (informative) Guide to use 9Annex B (normative) Test method for stretching of cores 10Bibliography 12List of figuresFigure B.1 Example of suitable test apparatus 11List of tablesTable 1 Cable construction types 3Table 2 Rip cord co
5、lour scheme 6Table 3 Schedule for routine and sample tests 6Summary of pagesThis document comprises a front cover, an inside front cover, pages i to ii,pages 1 to 12, an inside back cover and a back cover.BRITISH STANDARD BS 4737-3.30:2015 The British Standards Institution 2015 iForewordPublishing i
6、nformationThis part of BS 4737 is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 28 February 2015. Itwas prepared by Subcommittee GW/1/1, Alarm components, under the authorityof Technical Committee GW/1, Electronic security systems. A
7、 list of organizationsrepresented on this committee can be obtained on request to its secretary.SupersessionThis part of BS 4737 supersedes BS 4737-3.30:1986, which is withdrawn.Information about this documentThis is a full revision of the standard, and introduces the following principalchanges: The
8、 scope has been expanded to include alarm systems (not justintruder alarms) and is no longer specific to PVC cable. It provides for three classifications of cable construction. It provides a more robust schedule of tests. It provides guidance on the application of cables.Presentational conventionsTh
9、e provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative elemen
10、t.Requirements in this standard are drafted in accordance with Rules for thestructure and drafting of UK standards, subclause J.1.1, which states,“Requirements should be expressed using wording such as: When tested asdescribed in Annex A, the product shall .”. This means that only those productsthat
11、 are capable of passing the specified test will be deemed to conform to thisstandard.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot
12、 confer immunity from legalobligations.BRITISH STANDARDBS 4737-3.30:2015ii The British Standards Institution 20151 ScopeThis specification gives requirements for the construction and performance ofinsulated and sheathed cables for interconnecting wiring used in alarm systems.This British standard is
13、 applicable to cables intended for use with voltages upto 50 V a.c. or d.c.This standard excludes cables for fire alarm systems.2 Normative referencesBS 4808-1, Specification for L.F. cables and wires with PVC insulation and PVCsheath for telecommunication Part 1: General requirements and testsBS 76
14、55-3.2, Specification for insulating and sheathing materials for cables Part 3.2: PVC insulating compounds Hard grade typesBS 7655-4.2, Specification for insulating and sheathing materials for cables Part 4.2: PVC insulating compounds General applicationBS 7655-6.1, Specification for insulating and
15、sheathing materials for cables Thermoplastic sheathing compounds having low emission of corrosive gases, andsuitable for use in cables having low emission of smoke when affected by fire Part 6.1: General application thermoplastic typesBS EN 50363-8, Insulating, sheathing and covering materials for l
16、ow voltageenergy cables Part 8: Halogen-free, thermoplastic sheathing compoundsBS EN 50363-3, Insulating, sheathing and covering materials for low voltageenergy cables Part 3: PVC insulating compoundsBS EN 50363-4-1, Insulating, sheathing and covering materials for low voltageenergy cables Part 4-1:
17、 PVC sheathing compoundsBS EN 50363-7, Insulating, sheathing and covering materials for low voltageenergy cables Part 7: Halogen-free, thermoplastic insulating compoundsBS EN 50395, Electrical test methods for low voltage energy cablesBS EN 50396:2005+A1:2011, Non electrical test methods for low vol
18、tage energycablesBS EN 60228:2005, Conductors of insulated cablesBS EN 60332-1-2:2004: Tests on electric and optical fibre cables under fireconditions Part 1: Test for vertical flame propagation for a single insulatedwire or cable Section 2: Procedure for 1 kW pre-mixed flameBS EN 61034-1, Measureme
19、nts of smoke density of cables burning under definedconditions Part 1: Test apparatusBS EN 61034-2, Measurements of smoke density of cables burning under definedconditions Part 2: Test procedure and requirementsBS EN 62230, Electric cables Spark-test method3 Terms, definitions and abbreviations3.1 T
20、erms and definitionsFor the purposes of this part of BS 4737, the following terms and definitionsapply.3.1.1 alarm systemapplications intended for the protection of life, property or the environmentBRITISH STANDARD BS 4737-3.30:2015 The British Standards Institution 2015 1NOTE Intruder and hold-up a
21、larm systems, social alarm systems, access controlsystems, CCTV systems, etc.3.1.2 interconnecting wiringwired interconnection conveying information between components of an alarmsystem3.1.3 values3.1.3.1 approximate valuevalue which is only indicativeNOTE Values described as “approximate” do not co
22、nstitute requirements to bechecked by measurement.3.1.3.2 nominal valuevalue by which a quantity is designatedNOTE Nominal values usually give rise to values to be checked by measurementstaking into account specified tolerances.3.1.4 cableone or more cores enclosed in a common sheathing3.1.5 conduct
23、orpart of a cable which has the specific function of carrying current and/or signals.3.1.6 coresingle conductor with its own insulation3.1.7 filled sheathingsheathing which also fills the interstices between the contours of the core(s)3.1.8 insulationlayer of material applied to the conductor with t
24、he specific function of resistingcurrent flow between the conductor and any adjacent conductive material3.1.9 drain wireuninsulated wire laid in contact with a screen but not including any sheathing3.1.10 drumcylinder with flanges on to which a cable is wound during manufacturing forstorage and tran
25、sportation.3.1.11 plain conductorconductor which is not coated with an additional metal3.1.12 screenmetallic layer which serves to confine the electrical field within the cable and/orto protect the cable from external electrical influences3.1.13 sheathuniform and continuous covering of non-metallic
26、material, giving mechanicalprotection and/or additional insulation to a core or cores in a cableNOTE The sheath is generally extruded.3.1.14 solid conductorconductor consisting of a single wireBRITISH STANDARDBS 4737-3.30:20152 The British Standards Institution 20153.1.15 spark testdielectric test i
27、n which a cable is subjected to a proof voltage applied by meansof a surrounding electrode and through which the cable is passed3.1.16 stranded conductorconductor consisting of a number of parallel strands assembled, withoutintermediate insulation by twisting the strands together in a helical format
28、ionor by laying them straight3.1.17 tinned conductormetal-coated conductor in which the metal coating is of tin3.1.18 tubed sheathingsheathing which does not follow closely the contours of the core(s)3.2 AbbreviationsLSHF Low smoke halogen freePVC Polyvinyl chloride4 Cable construction typesNOTE The
29、 ability of a given cable to conform to the requirements for a particularcategory in this standard refers only to the test condition stated, and the level ofperformance achieved in a particular installation can be influenced by the actualinstallation conditions.Cables shall be designated by type in
30、accordance with Table 1, using thefollowing classification: Type 1: Normal electrical resistance and having insulation and sheathingwith low emission of smoke and corrosive gases when affected by fire. Type 2: Normal electrical resistance with PVC insulation and sheathing. Type 3: Higher electrical
31、resistance with PVC insulation and sheathing.Table 1 Cable construction typesCable type Insulations/sheath Conductorresistance/kmInsulation material Sheath material1 LSHF 100 max. TI 7 in accordance withBS EN 50363-7, or LTS 3 inaccordance withBS 7655-6.1TM7 in accordance withBS EN 50363-8orLTS 3 in
32、 accordancewith BS 7655-6.12 PVC 100 max. TI 1 in accordance withBS EN 50363-3 orType 2 BS 7655-3.2TM1 in accordance withBS EN 50363-4-1 orType 6 BS 7655-4.23A)PVC 155 max. TI 1 in accordance withBS EN 50363-3 orType 2 BS 7655-3.2TM1 in accordance withBS EN 50363-4-1orType 6 BS 7655-4.2A)Lower grade
33、 of conductor material expectation, e.g. alloy conductorBRITISH STANDARD BS 4737-3.30:2015 The British Standards Institution 2015 35 ConductorsConductors shall be plain or tinned annealed copper, plain aluminium, orcomposite construction using suitable metals constructed in accordance withTable 1.Co
34、nductors shall consist of a single solid wire or multiple strands of wire of thesame material. The conductor construction shall be the same for all conductorsin any single cable.Conductors shall be tested in accordance with Table 3.NOTE Strands may either be parallel or twisted.6 Materials of core,
35、insulation and sheathing6.1 Identification of cores6.1.1 GeneralThe cores shall be distinguishable, for example by colour or striping.Conformity shall be checked by visual examination.6.1.2 Clarity and durabilityThe identification of the cores shall be clear and durable such that it cannot beremoved
36、, when tested in accordance with BS EN 50396:2005+A1:2011, 5.1.6.1.3 Laying upThe cores of cables shall be laid up. Conformity shall be checked by visualexamination.Any uninsulated drain wire incorporated in the cable shall conform to 8.3.2.6.1.4 ScreenIn cables where a screen is used, a metallic or
37、 laminated metallic tape(s) or braidshall be applied, either longitudinally or helically, or a combination of both.If a tape is applied longitudinally or helically it shall have an overlap of not lessthan 10%.6.2 Insulation6.2.1 Type of insulationThe insulation shall be extruded in accordance with T
38、able 1.6.2.2 Application of insulationThe insulation shall be applied by an extrusion process and shall form a single,compact and homogeneous layer. It shall be possible to remove the insulationeasily without damage to the insulation its self or to the conductor or tincoating (if any).6.2.3 Thicknes
39、s of insulationThe minimum value of the radial thickness of the insulation, when measured inaccordance with BS EN 50396:2005+A1:2011, 4.1, shall be not less than 0.15 mm.6.2.4 Spark testing of insulationWhen tested in accordance with the a.c. or d.c. test methods at the test voltagesspecified in BS
40、EN 62230, there shall be no breakdown of the insulation.BRITISH STANDARDBS 4737-3.30:20154 The British Standards Institution 20156.3 Sheath6.3.1 Type of sheathThe sheath shall be an extruded layer in accordance with the requirements givenin Table 1.6.3.2 Application of sheathSheathing shall be conti
41、nuous, tubed or filled, and shall fit closely over thecore(s) without adhesion.NOTE A polymeric rip cord may be included alongside the laid up cores.When the sheath is removed, there shall be no damage to the core insulationwhen visually checked.A rip cord with a breaking strength of not less than 4
42、0 N shall be providedunder sheathing to facilitate its removal.6.3.3 Thickness of sheathWhen measured in accordance with BS EN 50396:2005+A1:2011, 4.2, the smallestvalue of the radial thickness of sheath shall fall not below 0.4 mm.6.3.4 Spark testing of sheathWhen tested in accordance with the a.c.
43、 or d.c. test methods and the testvoltages specified in BS EN 62230, there shall be no breakdown of the sheath.7 Marking/labelling and packagingA cable claimed to comply with the requirements of this standard shall besupplied coiled on a drum or coiled in a box, and identified with the followinginfo
44、rmation:a) the name or identification mark of the manufacturer;b) the number and date of this standard, i.e. BS 4737-3.30:2015;c) the cable type 1, 2 or 3 (in accordance with Table 1);d) the length of cable on the drum, stated in metres;e) the number of cores in the cable;f) the conductor constructi
45、on of either solid or stranded, if stranded thenumber of strands;g) the resistance value of each core detailed as maximum ohms per km;h) the date of manufacture and batch number.Where the cores in the cable are not all of the same resistance, the informationof the resistance and number of cores of e
46、ach resistance type shall be detailed.This information shall be legible, durable and unambiguous, to enable the cabletype to be identified. Permissible methods are:1) visible labelling affixed to the outside of drum or box;2) a colour rip cord (see Table 2 for colour scheme); or3) details printed on
47、 the cable (see note).NOTE Printed identification may be by means of an abbreviated manufacturersmark and cable type number, a unique manufacturers code (to allow across-reference to the documentation supplied with the cable or confirmation ofcable type by the manufacturer), or the manufacturers web
48、site.BRITISH STANDARD BS 4737-3.30:2015 The British Standards Institution 2015 5Table 2 Rip cord colour schemeType Materials/Resistance Rip Cord colourA)Type 1 LSHF 100 max. GreenType 2 PVC 100 max. RedType 3 PVC 155 max. YellowA)The accompanying label shall contain additional information to enable
49、the user toconfirm the type of cable by referring to the colour of the rip cord.8 Tests8.1 Schedule of routine and sample testsCables shall be tested in accordance with Table 3.NOTE Table 3, refers to the relevant clauses of the standard specifying therequirements and test methods as well as the category of each test which applies,i.e. S or R (as defined in Table 3).Table 3 Schedule for routine and sample testsTest ClauseTest method TestcategoryStandard / Section ClauseConductor construction 5 BS EN 60228 SInsula
