1、BRITISH STANDARD AEROSPACE SERIES BS 3G 210: 1996 Specification for PTFE insulated equipment wires and cables, single- and multi-core, with silver plated copper conductors (190 C) or nickel plated copper conductors(260 C) ICS 49.060BS3G210:1996 This British Standard, having been prepared under the d
2、irectionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15September1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment 95/704087 DC ISBN 0 580 25708 8 Committees
3、 responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/6, Aerospace avionic, electrical and fibre optic technology, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Ma
4、nufacturers Association Civil Aviation Authority (Airworthiness Division) Federation of the Electronics Industry Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBS3G210:1996 BSI 08-1999 i Contents Page Committees responsible Inside
5、 front cover Foreword iii 1 Scope 1 2 References 1 3 Classification 1 4 Definitions 2 5 Construction 2 6 Designation 4 7 Packing and labelling 4 8 Tests 4 9 Reference samples 5 Annex A (informative) Maximum long term current ratings 21 Table 1 Single-core (cables and wires), unscreened types A and N
6、A300V (silver or nickel plated copper conductors) 5 Table 2 Single-core (cables and wires), unscreened types B and NB600V (silver or nickel plated copper conductors) 6 Table 3 Single-core (cables and wires), unscreened types C and NC1000V (silver or nickel plated copper conductors) 6 Table 4 Multi-c
7、ore (cables and wires), twisted only types A and NA300V (silver or nickel plated copper conductors) 7 Table 5 Multi-core cables, twisted only types B and NB600V (silver or nickel plated copper conductors) 7 Table 6 Multi-core cables, twisted only types C and NC1000V (silver or nickel plated copper c
8、onductors) 8 Table 7 Single- and multi-core cables, screened types AS and NAS300V (silver or nickel plated copper conductors and screens) 9 Table 8 Single- and multi-core cables, screened types BS and NBS600V (silver or nickel plated copper conductors and screens) 9 Table 9 Single- and multi-core ca
9、bles, screened types CS1000V and NCS1000V (silver or nickel plated copper conductors and screens) 10 Table 10 Multi-core cables, sheathed types AM and NAM300V (silver or nickel plated copper conductors) 11 Table 11 Multi-core cables, sheathed types BM and NBM600V (silver or nickel plated copper cond
10、uctors) 11 Table 12 Multi-core cables, sheathed types CM and NCM1000V (silver or nickel plated copper conductors) 12 Table 13 Single- and multi-core cables, screened and sheathed types BSM and NBSM600V (silver or nickel plated copper conductors) 13 Table 14 Single- and multi-core cables, screened an
11、d sheathed types CSM and NCSM1000V (silver or nickel plated copper conductors) 14 Table 15 Single colours of PTFE insulation 15 Table 16 Bi-colour combinations of PTFE insulation 15 Table 17 Tests and requirements for cable types A, B, C, AS, BS, CS and NA, NB, NC, NAS, NBS and NCS 16 Table 18 Tests
12、 and requirements for cable types AM, BSM, CM, CSM and NAM, NBM, NBSM, NCM, NCSM 17 Table 19 Test application 18 Table 20 Calculation of maximum resistance values of conductors 19 Table 21 Tension for cold test (test 25) 20BS3G210:1996 ii BSI 08-1999 Page Table 22 Tensile strength and elongation at
13、break of copper conductor after insulation 20 Table A.1 Maximum long term current ratings 21 List of references Inside back coverBS3G210:1996 BSI 08-1999 iii Foreword This British Standard has been prepared by Technical Committee ACE/6. It specifies requirements and current ratings for a range of PT
14、FE insulated equipment wires and cables that are intended for use in electrical instruments and equipment. It is a revision of BS2G210 which is withdrawn. This revision introduces corrections toTable 17,Table 18 andTable 21 and incorporates AMD7223,July1992. The PTFE insulation is applied either by
15、extrusion or by spiral lapping. Cables manufactured to this standard are not required to meet the fire resistance requirements of BS3G100-3.13, but are required to satisfy the flammability requirements of BSG230. A British Standard does not purport to include all the necessary provisions of a contra
16、ct. 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 to iv, pages1to 22, an inside back cover
17、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.iv blankBS3G210:1996 BSI 08-1999 1 1 Scope This British Standard specifies the construction and performance requirem
18、ents for a range of PTFE insulated cables and wires with either silver plated or nickel plated copper conductors which are suitable for use in electrical instruments and equipment. The continuous current ratings for the cables are given inAnnex A. The following types of cables are specified: NOTE 1C
19、ables with nickel plated conductors are prefixed N. NOTE 2The cables are suitable for use where the potential between conductors, or between a conductor and screen, or between a conductor and the equipment structure does not exceed the voltage specified above for each type. NOTE 3The cables are suit
20、able for continuous use where the maximum stabilized conductor temperature does not exceed190 C (cables having silver plated conductors) or260 C (cables having nickel plated conductors). They are suitable for applications not involving continuous flexing at temperatures down to75 C, or, where contin
21、uous flexibility is involved, at temperatures down to50 C. NOTE 4Although cables having silver plated conductors are suitable for use up to190 C, it should be noted that after prolonged use at this temperature the conductor may tarnish, with consequent difficulty in soldering. NOTE 5The latest revis
22、ion of an Aerospace Series standard is indicated by a prefix number. 2 References 2.1 Normative references This British Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are made at the appropriate places in the text and the cited pu
23、blications are listed on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publications apply to this British Standard only when incorporated in the reference by amendment or revision. For undated references, the lates
24、t edition of the cited reference applies, together with any amendments. 2.2 Informative references This British Standard refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover
25、, but reference should be made to the latest edition. 3 Classification Cables shall be classified according to the number of cores as follows: class 1: single-core; class 2: two-core; class 3: three-core; class 4: four-core. types A and NA 300 V (r.m.s.) single- or multi-core types B and NB 600 V (r
26、.m.s.) types C and NC 1000 V (r.m.s.) types AS and NAS 300 V (r.m.s.) single- or multi-core with overall screen types BS and NBS 600 V (r.m.s.) types CS and NCS 1000 V (r.m.s.) types AM and NAM 300 V (r.m.s.) multi-core with outer jacket types BM and NBM 600 V (r.m.s.) types CM and NCM 1000 V (r.m.s
27、) types BSM and NBSM 600 V (r.m.s.) single- or multi-core with overall screen and outer jacket type CSM and NCSM 1000 V (r.m.s.)BS3G210:1996 2 BSI 08-1999 4 Definitions For the purposes of this standard the definitions given in BSG230 and BSG258 apply, together with the following. 4.1 wire a cable h
28、aving a solid conductor 5 Construction 5.1 General The materials and method of construction used for the formation of cables shall be defined and controlled by the manufacturer to the satisfaction of the Approving Authority 1) . No change shall be made to such materials or processes unless it can be
29、 shown to the satisfaction of the Approving Authority that the performance and handling properties of cables have not been degraded. 5.2 Materials Cables shall be manufactured from unused materials that have been exposed only to processes essential to their manufacture and application. 5.3 Conductor
30、s 5.3.1 Copper conductors shall conform to the appropriate requirements of BSG231 together with5.3.2 and5.3.3, except for tensile strength and elongation at break of conductors after insulation which shall conform toTable 22. 5.3.2 Copper strands shall be either silver plated or nickel plated. 5.3.3
31、 Joints in single strands shall be brazed or hard soldered and there shall be not more than one such joint in any50m of strand. Joints in single strands shall not be within300mm of any other joint in the same layer. 5.4 Insulation The insulation shall be PTFE, either extruded or spirally lapped. If
32、spirally lapped, the layers shall be sintered together to give a consolidated dielectric. 5.5 Screen The screen shall consist of a braid having a coverage of85% minimum, and a lay factor of less than3 when calculated in accordance withAppendix A of BS2G230:1991. Braid strands shall be0.1mm diameter.
33、 There shall be no joints in the complete screen. Where breaks in individual strands occur, the ends shall be brazed or tucked into the weave ensuring that the cut end is on the outside of the screen. There shall be not more than one such break in any300mm length of cable or in any10m length of indi
34、vidual strand. Strands from which the braid is constructed shall be either silver plated or nickel plated and shall conform to the appropriate requirements of BSG231 before braiding. 5.6 Jacket The jacket shall be manufactured from PTFE and shall have a minimum thickness of0.25m. It shall be applied
35、 by either extrusion or spiral lapping. If spirally lapped the layers shall be sintered. NOTEThe type of jacket required should be stated by the purchaser in his enquiry or order. 1) Approving Authorities are as follows: a) for UK civil aviation products, the Civil Aviation Authority (or their accre
36、dited representatives); or b) for UK military products, information is available from the Procurement Executive, Ministry of Defence, Directorate General of Defence Quality Assurance, Directorate of Standardisation.BS3G210:1996 BSI 08-1999 3 5.7 Mass and dimensions NOTECables are available in the fo
37、llowing sizes. 5.7.1 General The mass and dimensions of the cables shall conform toTable 1 toTable 14, as appropriate. 5.7.2 Single-core cables Single-core cable types AS, BS and CS shall consist of single-core cable type A, B or C with screen. Single-core cable types BSM and CSM shall consist of si
38、ngle-core cable type B or C with screen and outer jacket. 5.7.3 Multi-core cables The cables shall consist of two or more single-core cables conforming to5.7.1 and5.7.2, twisted together with a lay of approximately 12 times the diameter over the laid up core. Multi-core cable types A, B and C shall
39、consist of twisted assemblies of single-core cable types A, B or C with no further finish. Types AS, BS and CS shall consist of twisted assemblies of single-core cable type A, B or C with overall screen. Types AM, BM and CM shall consist of twisted assemblies of single-core cable type A, B or C with
40、 outer jacket. Types BSM and CSM shall consist of twisted assemblies of single-core cable type B or C with overall screen and outer jacket. 5.8 Colour 5.8.1 Single-core cable 5.8.1.1 Single colour For class1 cables of all types, the colour of the PTFE insulation shall conform to Table 15. The colour
41、s shall match those shown in BS6746C, and shall not be changed by any of the tests to which the cable is subjected. NOTECables may be coloured by the use of an appropriately coloured extrusion compound or tape, or by the application of a coloured PTFE finishing coat over natural PTFE insulation. 5.8
42、.1.2 Bi-colour Bi-colouring shall conform toTable 16 and shall be in the form of non-conductive spiral marking obtained by the use of differently coloured tapes, or by dual extrusion, or by the application of stripes in PTFE printing ink on the base colour. The first colour in each pair listed inTab
43、le 16 shall be the base colour and shall occupy not less than70% of the surface area. The cable shall be readily identifiable by viewing any12mm length from any direction. Types A and NA Sizes 32 to 20 single- and multi-core. Multi-core only available with stranded conductors Types B and NB Sizes 32
44、 to 18 Types C and NC Sizes 32 to 10 Types AS and NAS Sizes 32 to 20 single- and multi-core. Available only with stranded conductors Types BS and NBS Sizes 32 to 18 Types CS and NCS Sizes 32 to 10 Types AM and NAM Sizes 32 to 20 multi-core only. Available only with stranded conductors Types BM and N
45、BM Sizes 32 to 18 Types CM and NCM Sizes 32 to 18 Types BSM and NBSM Sizes 32 to 18 single- and multi-core. Available only with stranded conductors Types CSM and NCSM Sizes 32 to 10 single-core only. Available only with stranded conductors Types CSM and NCSM Sizes 32 to 18 multi-core only. Available
46、 only with stranded conductorsBS3G210:1996 4 BSI 08-1999 NOTEThe purchaser should state in his enquiry or order whether bi-colouring is required. 5.8.2 Multi-core cable 5.8.2.1 For all types of multi-core cable of classes2,3 or4, the insulation shall be colour coded as shown below, using any of the
47、methods listed in5.8.1.1. two-core: red, blue; three-core: red, blue, yellow; four-core: red, blue, yellow, green. 5.8.2.2 Jackets of types AM, NAM, BM, NBM, CM, NCM, BSM, NBSM, CSM and NCSM shall be white or another colour listed inTable 15, in accordance with5.8.1.1. NOTEThe purchaser should state
48、 in his enquiry or order if a colour other than white is required. 6 Designation The designation of the cables for the purposes of drawing references and orders shall be as follows. For example,3G210BSM20C92E is a600V single-core, screened and jacketed cable with a19 strand, size20 conductor. The ex
49、truded core is coloured white/red. For example,3G2103BSM22B9E is a600V,3-core screened and jacketed cable with7 strand, size22 conductors. The core insulation (red/blue/yellow) is extruded and the jacket colour is white. 7 Packing and labelling The cables shall be packed and labelled in accordance with BSG230. 8 Tests Cables shall be tested in accordance with BSG230 as specified inTable 17 orTable 18 as applicable. Specific requirements of this standard are given against the appropriate test. The application
