1、AECMA PRENZ34b 8b = 1012311 0003005 3 U - _ - A.E .C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prE N 2346 Issue P 1 April 1986 UDC : 621 31 5.21 :629.7.064.5 Key words : aircraft industry, aircraft equipment, fire-resisting equipment, dimension, mass, electrical resistance ENGLISH VERSION Aeros
2、pace series Fire resistant electrical cables Dimensions, conductor resistance and mass Srie arospatiale Luft- und Raumfahrt Cbles lectriques Feuerbestndigen rsistant au feu elektrischen Leitungen Dimensions, rsistance linique et masse Mae, Leiterwiderstand und Masse This standard is initially publis
3、hed on green paper for fhe needs of AECMA-Members (Association Europ4enne des Constructeurs de Materiel Arospatial). it has been technically approved by the experts of the concerned AECMA Commission following comment by the manufacturers of the M ernber countries. After examination and signature of
4、the AEC,MA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be published in its final version on yellow paper as an AECMA Standard. Nota - Extra cbpies can be supolied by B.N.A.E - 8. rue Moroau-Vsuthicr - 92100 BOULOGNE-BILLANCOURT Edition
5、 approved for publication Cornrnentc should be sent within six rnanths C2 Chairman after the aate of utSrcation decision Mr LECUNFF I A.E.C.M.A. I 88, Ed. Malesherbes 22 April 1986 75008 PARIS - FRANCE I AECMA PREN23gb b LOL23LL 000300b 5 W _ - - prEN2346 Page 3 i Scope and field of application This
6、 standard defines the dimensions, resistance per unit length and mass of fire resistant electrical cables, which satisfy in their entirety the requirements specified in standard EN2234. These cables may be used continuously at locations where the maximum stabilised temperature of the conductor does
7、not exceed 260 OC. They also retain their electrical stability when exposed for 15 minutes to a flame at 1100 OC. Their insulation has been designed to resist an effective maximum operating voltage of 600 volts and a frequency of below 2000 Hz. 2 References EN2234 , Fire resisting electrical cables
8、- Technical specification - Aerospace series. 3 Definitions and symbols Refer to standard EN2234. 4 Composition The conductor of fire resistant cables must satisfythe requirements of sub-clause 4.1 of standard EN2234. The insulation of these cables must comply with that defined in sub-clause 4.2 of
9、the said standard. The outer sheath must be white with red stripe : - helical for cables of sections 0,40 to 5 mm2 - longitudinal or helical for cables of sections 9 to 68 mm2 5 Required characteristics The various characteristics required are specified in the table overleaf. AECMA PREN2346 Bb LOL23
10、LL 0003007 7 W: prEN2346 Page 4 Table of required characteristics Code 004 006 o1 o o1 2 020 030 050 O90 140 220 340 420 530 680 Nominal cross-section . mm2 014 0,6 .1 112 2 3 5 9 14 22 2 34 42 53 68 Gauge AWG 1) 22 20 18 16 14 12 10 8 6 4 2 1 O O0 Number of strands min. 19 19 19 19 37 37 37 117 127
11、 182 201 245 322 41 6 I) A WG - American Wire Gage Nominal diameter of strands mm Oll 5 0.20 0,25 0,30 0,25 0,32 0,40 Resistance per unit length at 20 OC max. n/km 91 ,o0 44,30 27,90 18,80 13,90 8,94 5,61 3,14 1,98 1,25 0,81 O, 60 0,52 0,40 Diameter of conductor max. mm 0,80 1 ,O4 1,29 1,53 1,82 2,2
12、8 2,88 4,40 5,50 6,40 8,60 9,50 1 0,70 12,lO Outer diameter of cable min. mm 1,90 2,15 2,40 2,60 2,95 3,40 3,95 5,40 6,45 7,90 9,65 10,60 11,75 13,OO max. mm 2,l o 2,35 2,65 2,90 3,20 3,75 4,30 5,85 7,OO 8,40 10,30 11,25 12,45 14,OO Mass of cable max. g/m 910 12,7 16,9 20,8 27,7 40,2 58,5 104,O 156,
13、O 237,O 364,O 444,O 557,O 698,O 6 Designation Each cable shall be designated only in the manner as illustrated below : Description block FIRE RESISTANT ELECTRICAL CABLE EI4 standard number 420 = code for nominal cross-section (refer to Table Identity block EN2346-420 3- Note : if necessary the origi
14、nator code S9005 may be introduced between the description block and the identity block. 7 Marking 7.1 Marking of the cable The marking of the cable by the manufacturer shall comply with sub-clause 7.1 of standard EN2234. 7.2 Marking of package The marking of the package shall comply with sub-clause 7.2 of standard EN2234,
