1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 30 September 2004 prEN 4049-001 Edition P 1 September 2004 Comments should be sent within six months after the date of publication to AECMA-STAN ICs: 49.060 Descriptors: ENGLISH VERSION Aerospace series Thermocouple extension cab
2、le Operating temperatures between - 65 OC to 260 OC Part O01 : Technical specification Srie arospatiale Luft- und Raumfahrt Tempratures de fonctionnement comprises Betriebstemperaturen Cbles, thermocouple Thermoelement Ausgleichsleitung entre - 65 OC et 260 OC Partie O01 : Spcification technique zwi
3、schen - 65 OC und 260 OC Teil O01 : Technische Lieferbedingungen This “Aerospace Series“ frestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published for the needs of the European Aerospace Industry. It has
4、 been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this frestandard, the technical content shall not be changed to an extent that interchangeabilify is affected, physically or functionally, without re-identification of the st
5、andard. After examination and review by users and formal agreement of AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implemen
6、t the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Electrical Domain I I Copytight 2004 O by AECMA-STA1 Page 2 prEN 4049-001 :2004 Foreword This standard was reviewed by the Domain Technical Coordinator of
7、AECMA-STANS Electrical Domain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Contents 1 2 3 4 4.1 4.2 4.3 4.3.1 4.3.2 4.3.3 5 6 7 7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.2 7.
8、2.1 7.2.2 7.2.3 7.2.4 8 9 9.1 9.2 Scope Norm at ive referen ces Definitions and symbols Materials and construction Conductors Materials Construction of the cables General Cable lay Screened cables Required characteristics Tests method Quality assurance Qualification General requirements Qualificatio
9、n conditions Qualification tests Extension of qual if cat ion Acceptance tests Required conditions Production routine tests Tests prior to delivery Periodic tests Identification marking Packaging, labelling and delivery length Packaging and labelling Delivery length Page 3 3 3 3 3 4 4 4 4 4 5 6 8 8
10、8 8 9 9 9 9 9 9 9 10 10 10 10 Page 3 prEN 4049-001 :2004 Minimum elongation 1 Scope Minimum breaking strength This standard specifies the required characteristics, test methods, qualification and acceptance conditions of thermocouple used for the connection between the thermocouple and the equipment
11、. Strand dia. 0,151 mm 15 15 2 Normative references Strand dia. 0,20 mm Strand dia. 0,151 mm Strand dia. 0,20 mm 15 10,2 17,7 15 9,7 16,7 This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate pla
12、ces in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication refe
13、rred to applies (including amendments). IS0 2574: 1994, Aircraff - Electrical cables - Identification marking IS0 8056-1 :I 985, Aircraff - Nickelchromium and nickel-aluminium thermocouple extension cables - Part 7: Conductors - General requirements and tests IS0 8815, Aircraff - Electrical cables a
14、nd cable harnesses - Vocabulary EN 3475-1 O0 *, Aerospace series - Cables, electrical, aircraff use - Test methods - Part 700: General EN 9133, Aerospace series - Quality management systems - Qualification Procedure for Aerospace Standard Parts EN 60584-2, Thermocouples -Part 2: Tolerances 3 Definit
15、ions and symbols See EN 3475-100, IS0 8056-1 and IS0 8815. 4 Materials and construction 4.1 Conductors The conductors for cables in accordance with the present Technical Specification shall consist of conductors as per IS0 8056-1. The tolerance class is according to EN 60584-2. Individual strands sh
16、all show the following minimum elongation and tensile strength (see Table 1). Table 1 * 1) All parts quoted in this standard Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 4049-001 :2004 4.2 Materials The insulation shall be of regular, circular cross-section
17、throughout the entire length of the cable. The surface of the cable shall be smooth and comply with the requirements in respect of identification. The materials used shall be unaffected by corrosion and shall be resistant to the effects of mould fungus and similar micro-organisms. 4.3 Construction o
18、f the cables 4.3.1 General The operating temperature of the wires shall not be lower than the maximum operating temperature of the complete cable. 4.3.2 Cable lay The lay length of the outer layer shall not be less than 8 times and not more than 16 times the nominal diameter of the cable. The core s
19、hall not be spliced. 4.3.3 Screened cables 4.3.3.1 General The individual strands used for the screen shall be free from kinks, loops or breaks; their surface shall be free from corrosion and other contamination. They shall satisfy the mechanical tests in EN 3475-505 to EN 3475-508 before use. The s
20、creen shall be in contact with all the cabled cores. Where spiral screening is used the lay direction shall be contrary to that of the cables cores. 4.3.3.2 Joints Joints in the individual strands of the screen shall be made by soldering or by laying the individual strands together over a length of
21、at least 1 O mm. There shall be no more than one joint per 3 m cable length (measured between different individual strands). 4.3.3.3 Braid screen pushback capability In accordance with test 6.41. 4.3.3.4 Angle of spiral screening or braiding The angle y of spiral screening or braiding (as shown in F
22、igure I), measured against the longitudinal axis of the cable shall be at least IO“. Page 5 prEN 4049-001 :2004 4.3.3.5 Screen coverage The screen shall have a coverage of at least 90 % for spiral screening and at least 85 % for braiding, these values being determined by the following formula: s= D=
23、 d= N= n= B= z= F= = u= U = Y= a= lay length of screen in mm diameter under screen in mm (for cables with 2 or more cores without fillers: diameter of screen strand in mm number of cores number of strands per carriers diameter of core in mm total number of carriers filling factor optical coverage se
24、e Figure 1. nd / sin a see 4.3.3.4. 90” -y D=(z+N) b/z Figure 1 - Cable covering The screen coverage is calculated using the following formula: - for spirals: U=z(D+d) and S=z(D+d)tana F = UZ / U= nd Z/ z (D + d) sin a =Fx100(%) - for braids: U=z(D+d) and S=z(D+2d)tancx For braids, the filling facto
25、r F and coverage , taking into account both braiding directions and a symmetrical braiding pattern are: F= (U/ U) (Z/ 2) = nd / z (D+ d) sin a (Z/2) =F(2 -fl x 100 (%) 5 Required characteristics The characteristics of the cables, tested according to the methods described hereafter shall comply with
26、the values given in the product standard. Page 6 prEN 4049-001 :2004 7 6 Tests method See Table 2. Table 2 - Tests: methods, application, requirements 1 3 3 3 3 3 3 3 Tests X 6.10 Accelerated ageing 6.1 1 Shrinkage and delamination 6.12 Delamination and blocking 6.13 Thermal shock 6.14 6.15 Bending
27、at ambient temperature Cold bend test 5 Q) TI O ._ - i- O a ._ L Requirements (and/or particulars) EN 3475- (and/or particulars) X - X - Test conditions Visual examination 1 O0 201 Product standard 6.2 Mass 202 minimum length 0,5 m X - X Product standard - X 6.3 I Dimensions 203 Product standard Ohm
28、ic resistance per unit 64 length 30 1 X - X - X Product standard 6.5 302 Alternative to dry test Voltage proof test: - immersion test - dry test - or dry impulse test Insulation resistance at (20 f 2) “C: at (95 f 2) “C: 13 KV r.m.s. 13 KV r.m.s. 33 KV peak voltage 6.6 303 For 1 Km length 1 500 MQ 1
29、 MQ 6.7 I Surface resistance 304 NOT APPLICABLE 6.8 I Overload resistance 305 NOT APPLICABLE 6.9 I Continuity of conductors 306 X 401 Mandrel 0 and test load: Table 3 X 402 Temperature: product standard X - X Product standard 403 Mandrel diameter: Table 3 Temperature: product standard Product standa
30、rd 404 Temperature: product standard X Product standard X - X 405 Mandrel diameter: Table 3 406 Mandrel 0 and test load: Table 3 Temperature: product standard Product standard 6.16 I Flammability 407 X - Product standard continued Page 7 prEN 4049-001 :2004 Table 2 - Tests: methods, application, req
31、uirements (continued) Tests Clauses N“ Requirements (and/or particulars) EN 3475- (and/or particulars) Description 6.17 Fire resistance 408 6.18 6.19 Air-excluded ageing Thermal endurance 409 41 O NOT APPLICABLE NOT APPLICABLE 6.20 Resistance to fluids 41 1 Per fluid tested 6.21 Humidity resistance
32、412 Method A or B as requested in product standard 6.22 Wrap back test 413 4pplicable to cables 5 5 mm2 6.23 Differential scanning calorimeter (DSC test) 414 6.24 Dynamic cut through 501 Temperature: product standard roduct standard 6.25 Notch propagation 502 Cut depth: product standard roduct stand
33、ard 6.26 Scrape abrasion 503 Load: product standard 3equirement to be considered at 20 “C unless otherwise specified 6.27 Torsion 4pplicable to 5 5 mm2 504 Test load: Table 3 r3 and T4: product standard 505 6.28 See 4.1 of this standard Tensile test on conductors and strands 6.29 6.30 Plating contin
34、uity Adherence of plating 506 507 NOT APPLICABLE NOT APPLICABLE 6.31 6.32 Plating thickness Solderability 508 509 NOT APPLICABLE NOT APPLICABLE 6.33 51 O NOT APPLICABLE Tensile strength and elongation of extruded insulation, sheath and jacket material Cable-to-cable abrasion 6.34 51 1 roduct standar
35、d 6.35 6.36 Flexure endurance Smoke density 51 2 601 roduct standard roduct standard 6.37 6.38 Toxicity Resistance to wet arc tracking 602 603 roduct standard NOT APPLICABLE 6.39 Resistance to dry arc propagation 604 NOT APPLICABLE continued Page 8 prEN 4049-001 :2004 6.40 Table 2 - Tests: methods,
36、application, requirements (concluded) Wet short circuit test 605 I Tests 6.43 6.44 Permanence of 703 manufacturers marking Flexibility 704 6.41 6.45 6.46 6.42 Contrast measurement 705 Laser markability 706 Strippability and adherence of insulation to the conductor 6.47 6.48 701 Magnetic properties I
37、S0 8056-1 Thermo electric test IS0 8056-1 Screen pushback capability Nominal conductor cross-section mm2 0,4 0,6 702 Corresponding size Mandrel diameter Test force AWG a mm N 9 10 12 x max. cable diameter 22 20 4- Number of specimens per cross section for each test unless otherwise specified I Requi
38、rements (and/or particulars) Product standard Product standard Product standard Product standard Product standard 7 Quality assurance 7.1 Qualification 7.1.1 General requirements See EN 9133. 7.1.2 Qualification conditions The cables shall be submitted for qualification tests on drums, spools or in
39、coils in sufficient lengths, wound evenly and uniformly. Each drum, spool or coil shall have a label containing information given in 9.1, Page 9 prEN 4049-001 :2004 Qualified cables Nominal cross-section AWG a 0,4 22 7.1.3 Qualification tests See Table 2. Cables covered by the same qualification Nom
40、inal cross-section AWG a 0,6 20 7.1.4 Extension of qualification The qualification granted may be applicable to adjacent cross-sections in accordance with Table 4. 7.2 Acceptance tests 7.2.1 Required conditions See Table 2. The acceptance tests shall be carried out on cables delivered against an ord
41、er to check that the cable characteristics are maintained. 7.2.1.1 The cables which fail any of the test specified in 7.2.2 shall be rejected. Tests to be carried out on all cables 7.2.1.2 Random sampling tests: retest If any of the specimen fails one of the tests specified in 7.2.3, that test shall
42、 be repeated on another set of specimens of the same cross-section selected at random from the same batch. If one of these new specimen fails the test, the batch submitted for acceptance shall be rejected. 7.2.2 Production routine tests The tests shall be carried out on all cables delivered. See Tab
43、le 2. 7.2.3 Tests prior to delivery They shall be carried out by sampling on each delivery batch. 7.2.4 Periodic tests They shall be carried out by sampling at least every three years. See Table 2. Page 10 prEN 4049-001 :2004 8 Identification marking Unless otherwise specified, the type, cross-secti
44、on and a reference for the identification of country of origin, manufacturer, and the year of manufacture shall be indelibly marked on the cables, in accordance with IS0 2574. 9 9.1 Packaging and labelling Cables supplied on drums, spools or in coils shall be wound evenly and uniformly. All cables e
45、nds shall be easily accessible and protected where necessary. Each drum, spool or coil shall have a label indicating: - manufacturers name and designation; - cable designation; - batch number; - date of manufacture; - inspector mark; - total length and length of each piece of cable in meters from in
46、side to out side. Packaging, labelling and delivery length 9.2 Delivery length They shall conform to Table 5 unless otherwise specified Table 5 Nominal cross-section for cables mm2 I AWG a Minimum acceptable continuous lengths for at least 85% of cables delivered m 0,4 to 0,6 I 22 & 20 1 O0 I Minimum acceptable continuous lengths for not more than 15 % of cables delivered m I 30 Closest American Wire Gage
