ISO-2032-1973.pdf
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1、INTERNATIONAL STANDAfNl 2032 INTERNATIONAL ORGANKATION FOR STANDARDlZATlON.MEXYHAPOAHAR OPl-AHIU3AWR II0 CTAHAAPTCI3AUAA.ORGANISATION INTERNATIONALE DE NORMALISATION Heat-resisting equipment wires for aircraft First edition - 1973-04-01 Gi UDC 629.7.064.5 : 621.315.2 Ref. No. IS0 2032-1973 (E) ii 7
2、Descriptors : aircraft, aircraft equipment, wires, electric wires, thermal resistance, specifications, materials specifications, tests, marking c-4 G 1 i3 Price based on 4 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical St
3、andards 1/9972545001 Not for Resale, 04/27/2007 02:34:31 MDTNo reproduction or networking permitted without license from IHS -,-,- FOREWORD IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing
4、International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with ISO, a
5、lso take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the IS0 Council. International Standard IS0 2032 was drawn up by Technical Committee ISO/TC 20, Aircraft
6、 and space vehicles, and circulated to the Member Bodies in July 1970. It has been approved by the Member Bodies of the following countries : Brazil India Canada Israel Czechoslovakia Italy Egypt, Arab Rep. of Japan France Netherlands Greece New Zealand South Africa, Rep. of Spain Switzerland Thaila
7、nd United Kingdom The Member Bodies of the following countries expressed disapproval of the document on technical grounds : Belgium U.S.A. U.S.S.R. 0 International Organization for Standardization, 1973 ? Printed in Switzerland Copyright International Organization for Standardization Provided by IHS
8、 under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:34:31 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 2032-1973 (E) Heat-resisting equipment wires for aircraft 1 SCOPE AND FIELD OF APPLICATION T
9、his International Standard specifies the requirements for a range of equipment wires (hook-up wires) designed for the internal wiritig of meters, panels and electrical and electronic equipment for use on aircraft. Three classes of equipment wire are specified as follows : - Type A : for use at volta
10、ges up to 250 V r.m.s. - Type B : for use at voltages up to 600 V r m.s. - Type C : for use at voltages up to 1 000 V r.m.s. The wires are suitable for use where, in continuous service, no combination of ambient temperature and conductor current produces a stabilized conductor temperature in excess
11、of 200 “C. The wires are suitable for fixed wiring at temperatures down to - 75 “C but are not suitable for severe flexing below - 50 “C. These wires do not support combustion but they should not be regarded as complying with the requirements of IS0 . . .I) in regard to fire resistance. This Interna
12、tional Standard includes the requirements for wires with copper conductors, including those with an outer covering in the form of a metal braid. 2 TERMINOLOGY 2.1 conductor : Conducting portion of an equipment wire. 2.2 wire : Cylindrical metallic wire of uniform cross-sectional area, used to form t
13、he conductor or braid. 2.3 stranded conductor : Conductor composed of a number of wires twisted together. When the conductor consists of more than one layer, alternate layers are twisted in opposite directions. 2.4 bunched conductor : Conductor composed of a number of wires in which all wires are tw
14、isted together in the same direction. 2.5 insulation : Part of an equipment wire which serves to insulate the conductor. 2.6 metal braid : A number of wires applied spirally over the insulation and interwoven to form a uniform and substantially continuous covering. 2.7 equipment wire : Complete asse
15、mbly of conductor, insulation and metallic braid if any. 2.8 sample : Amount of equipment wire of one and the same dimension and type, taken from a batch. 3 MATERIALS 3.1 Copper wires shall be of annealed high-conductivity copper having a resistivity not greater than the value fixed by the Internati
16、onal Electrotechnical Commission (IEC) for “Standard Annealed Copper”. Each wire shall be coated with silver or other suitable metal which will satisfy the requirements of the relevant national specification. 3.2 The tensile strength and elongation of wires taken from conductors shall conform to the
17、 appropriate values shown in Table 1 which are based on a gauge length of 254 mm (IO in) held in clamps separated at a rate exceeding 127 mm (5 in) per minute, the tensile strength being calculated on the original cross-sectional area of the wire. TABLE 1 Diameter Maximum tensile strength Minimum el
18、ongation mm in MPa* Ibf/in* % 0.08 to 0,125 0.003 15 to 0.004 92 325 47 000 5.5 0,15 to 0,20 0.005 9 to 0.007 87 303 44 000 9.0 0.25 to 0.45 0.009 84 to 0.017 7 296 43000 13.5 0.60 to 0.90 0.023 6 to 0.035 4 290 42 000 18.0 * 1 MPa 1 MN/m*. = 3.3 The material used for the insulation shall be polytet
19、rafluoroethylene or other material giving an equivalent performance. It shall be applied in such a way that the equipment wire meets all the requirements of this International Standard. 1) In preparation. 1 Copyright International Organization for Standardization Provided by IHS under license with I
20、SO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:34:31 MDTNo reproduction or networking permitted without license from IHS -,-,- -. I. -. _ _ _ _ _ _ . _ IS0 2032-1973 (E) 4 CONSTRUCTION 4.1 Conductor 4.1.1 The conductor shall consist of a number of wires bunched or st
21、randed. The wires shall be annealed copper coated with silver or other suitable metal as specified in 3.1. 4.1.2 The complete conductor shall not be joined. Individual wires may be joined, preferably by brazing or soldering, but no joint shall be within 300 mm (12 in) of any other joint in the same
22、layer. 4.2 Complete equipment wire 4.2.1 The insulation shall be of uniform circular cross-section throughout the length of the equipment wire and the conductor shall be evenly centred in the insulation. 4.2.2 The insulation shall not be loose but it shall be possible to strip the complete insulatio
23、n, leaving the conductor in a condition sufficiently clean to permit satisfactory connections being made to terminations without further cleaning. 4.2.3 When specified by the purchaser, the equipment wire shall be coded for circuit identification by colouring, printing or other suitable method. 4.2.
24、4 When specified by the purchaser, the equipment wire shall bear means of identification in accordance with section 11. 4.3 Metal-braided equipment wire 4.3.1 Annealed copper wire coated with silver or other suitable metal and complying with the requirements of 3.1 shall be used to form the overall
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