1、STD*AECMA PREN 3155-033-ENGL 2000 O 3r0323LL 0038327 347 Edition approved for publication Comments should be sent within six months C2 Chairman after the date of publication to 2000-05-31 AECMA Mr Peuetta Gulledelle 94 B-i200 BRUXELLES 0 aecrna20( AECMA STANDARD NORME AECMA AECMA NORM prEN 31 55-01
2、3 Edition P 2 May 2000 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 i75 81 10 - Fax. (+32) 2 775 61 i i ICs: 49.060 Supersedes edition P 1 March 1993 Descriptors: Aerospace industry, aircraft equipment, element of electrical co
3、nnection, electrical contact, characteristic, marking ENGLISH VERSION Aerospace series Electrical contacts used in elements of connection Part O1 3: Contacts, electrical, triaxial, size 8, female, type D, solder, class R Product standard Srie arospatiale Luft- und Raumfahrt Contacts lectriques utili
4、ss dans les organes de connexion Partie O1 3: Contacts lectriques triaxiaux, taille 8, femelles, type D, a souder, classe R Elektrische Kontakte zur Verwendung in Verbindungselementen Teil O1 3: Elektrische triaxiale Buchsenkontakte Gre 8, Typ Dl zum Lten, Klasse R Norme de produit Produktnorm This
5、“Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA- Members. It has been technically approved by the expetfs of the concerned Technical Committee following commen
6、t by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Chec
7、king Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue JeanJacques Rousseau
8、- 92138 ICCY-LEC-MOUUNEAUX CEDEX STD.AECMA PREN 3155-013-ENGL 2000 m 3032333 OOL8328 283 Page 3 prEN 31 55-01 3: 2000 O Introduction The contacts defined by this standard are derived from and are interchangeable with those of MlL-C-39029/91A. They are also interchangeable with those of standard EN 3
9、1 55-01 1. 1 Scope This standard specifies the required characteristics and tools applicable to size 8, female triaxial electrical contacts O1 3, type D, solder, class R, used in elements of connection according to EN 31 55-002. It shall be used together with EN 31 55-001. The associated male contac
10、ts are defined in EN 31 55-01 2 and EN 31 55-01 O. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For da
11、ted references, subsequent amendments to or revisions of any of these publications apply this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2591* EN 31 55-001 EN 31 55-002 EN 31 55-01 O EN
12、 31 55-01 1 EN 31 55-01 2 EN 3375-003 EN 3375-004 EN 3375-005 MIL-A-8243D MIL-C-25769J MIL-C-39029/91 A MlL-H5606E MIL-I-81969/14 MI L-L-7808J MIL-L-7870A MIL-L-23699C SAE AS 1241A Aerospace series - Elements of electrical and optical connection - Test methods - General Aerospace series - Electrical
13、 contacts used in elements of connection - Part 001: Technical specification 1) Aerospace series - Electrical contacts used in elements of connection - Part 002: List and utilization of contacts 1) Aerospace series - Electrical contacts used in elements of connection - Part 010: Contacts, electrical
14、, triaxial, size 8, male, type D, crimp, class R - Product standard 1) Aerospace series - Electrical contacts used in elements of connection - Part O1 1 : Contacts, electrical, triaxial, size 8, female, type D, crimp, class R - Product standard 1) Aerospace series - Electrical contacts used in eleme
15、nts of connection - Part 012: Contacts, electrical, triaxial, size 8, male, type D, solder, class R - Product standard 1) Aerospace series - Cables, electrical, for signal data transmissions - Part 003: Cables, bifilar, single braid - Product standard 2) Aerospace series - Cables, electrical, for si
16、gnal data transmissions - Part 004: Cables, bifilar, double braid - Product standard 2) Aerospace series - Cables, electrical, for signal data transmissions - Part 005: Cables, bifilar, double braid, high immunity - Product standard 2, Anti-icing and deicing-defrosting fluids 3) Cleaning compound, a
17、ircraft surface, alkaline water base 3) Contacts, electrical, connector, concentric twinax, socket, shielded, size 8 3) Hydraulic fluid, petroleum base, aircraft, missile and ordnance 3) Installing and removal tools, connector electrical contact, type III, class 2, composition B 3) Lubricating oil,
18、aircraft turbine engine, synthetic base, NATO code number 0-148 3) Lubricating oil, general purpose, low temperature 3) Lubricating oil, aircraft turbine engines, synthetic base 3) Fire Resistant Phosphate Ester Hydraulic Fluid for Aircraft (March 83) 4) * And all its parts quoted i) Published as AE
19、CMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published by: Department of Defense (DOD), the Pentagon, Washington DC 20301 USA. 4) Published by: Society of Automotive Engineers, Inc. (SAE) 400, Commonwealth Drive, Warrend
20、ale, PA 15096-0001. previous page is blank STD-AECIA PREN 3L55-OL3-ENGL 2000 LL23LL LB329 LLT W Page 4 prEN 31 55-01 3: 2000 3 Definitions For the purposes of this standard, the definitions given in EN 31 55-001 apply. 4 Required characteristics 4.1 Specific characteristics Type D contacts are conta
21、cts with screening feature, class R corresponds to an operating temperature range from - 65 OC to 150 OC. They may be delivered in different conditions defined in table 9 of EN 31 55-001. 4.2 Dimensions and mass See figure 1 for dimensions. Dimensions and tolerances are given in millimetres. Contact
22、 mass: 6 g ma. Key 1 2 3 4 5 6 7 8 9 Diameter of outside aiter wiring Corehentre contact solder zone Core/intermediate contact solder zone Braid/outer contact solder zone Point of contact with a flat ended gauge pin of diameter 5,540 f 0,005 Diameter compatible with outer pin of diameter 5,540 f 0,0
23、25 Point of contact with a flat ended gauge pin of diameter 0,61 O f 0,005 Diameter compatible with a centre of diameter 0,61 O f 0,013 The contact entry shall be protected either at the insert or at the contact by means of a restricted entry. Figure 1 STDOAECMA PREN 3155-0L3-ENGL 2000 A B 4.3 Mater
24、ial, surface treatment 4.3.1 Material Body: copper alloy EN 3375-003 EN 3375-004 4.3.2 Protective coating Gold on appropriate undercoat for copper alloy parts. Thickness not specified. 4.3.3 Dielectric ETFE Fluoropolymer 4.3.4 Heat-shrinkable tubing Radiation crosslinked polyvinylidene fluoride. 4.4
25、 Permissible cables See table 1. Table 1 I O I2 3 L I 0038330 931 Page 5 prEN 31 55-01 3: 2000 I Cable reference I Permissible cable group I codes I C I EN 3375-005 -1 4.5 Dimensions are in millimetres. See figure 2 to figure 17. Stripping of cables and wiring method Pre-position the screening featu
26、re ferrule on the cable Figure 2 Expose the braid by stripping the insulation Figure 3 STD-AECMA PREN 3155-013-ENGL 2000 1012331 0018331 878 M Page 6 prEN 31 55-01 3: 2000 Pick up and roll back the braid. Pick up and roll back the first braid. Single braid EN 3375-003 Double braid EN 3375-004 Double
27、 braid - Mu metal EN 3375-005 Figure 4 Figure 5 Figure 6 Cut the Mu metal strip Figure 7 Align the two wires of the pair Cut the filler Strip the conductors Figure 9 Pick up and roll back the second braid Figure 8 Flux (RMA flux) and tin plate the conductors with Sn63 Pb37 Recut the conductors to th
28、e lengths indicated (white and coloured wires of the pair). Key 1 White colour Figure 10 STD-AECMA PREN 3155-013-ENGL 2000 LOL23LL 0018332 704 W Page 7 prEN 31 55-01 3: 2000 Insert the conductors in the contacts: - white conductor: centre contact; - colour conductor: intermediate contact; - introduc
29、e the cable to butt into the contact (centre conductor); - check the position of the colour conductor and the position of the sleeve as indicated. II n m Ill II I 1 i4 II I I -4 Key 1 Colour conductor 2 3 Oto1 ma. 4 Cable/contact butt The sleeve covers the jacket of the colour conductor Figure 11 Af
30、ter having checked the alignment of the V of the cable clamp with the positioner; insert the contactlcable assembly in the positioner. See figure 12. Turn on the heating tool for at least 30 s before Set-up. Position the contact in the heating zone using the holding fixture. /-I 4- w Key 1 Reflector
31、 2 Positioner 3 Clamp 4 Holding tool Figure 12 Heat until the two solder preforms have completely melted. Leave the assembly to cool for a minimum of 15 s before withdrawing the contact from the fixture. STD-AECMA PREN 3155-013-ENGL 2000 303i?31L 0038333 b40 W Page 8 prEN 31 55-01 3: 2000 Checking t
32、he contact Set-up. See figure 13. The contact can only be correctly Set-up if all of the following conditions are visually observed: - the two solder preforms have disappeared; - respecting the overlap of the colour conductor. Key 1 Overlap 2 Melted solder rings NOTE is not affected. A slight browni
33、ng of the kynar sleeve is acceptable given that the performance of the product used Figure 13 Bring back the braid(s) over the body of the contact. See figure 14. Cut the braid according to the dimension indicated. 1 max. x Flgure 14 Introduce the screening feature ferrule to butt into the contact s
34、houlder. See figure 15. Figure 15 - STD.AECflA PREN 3155-013-ENGL 2000 LO123LL 0038334 567 Page 9 prEN 31 55-01 3: 2000 Heat the screening feature ferrule until solder has completely melted through the holes. See figure 16. Hold the ferrule with a tool while heating. Leave the assembly to cool for a
35、 minimum of 15 s before withdrawing the contact from the tool. W U Figure 16 Checking the ferrule Set-up The braid shall be correctly wetted by the solder and shall be visible through at least 2 holes in the screening feature ferrule. - i i 0.25 max. Figure 17 4.6 Too I i ng Conform to MIL-I-81969/1
36、4 Insertion: not necessary Extraction: M-81969/14-O6 Contact termination: the hot air generator is of a minimum usable capacity of 800 W and the temperature in the heating zone shall be (420 f 20) OC. The drawing of the tool is given for information purposes: the positioner has an interface for the
37、male contact on side P and the female contact on side S (see figure 12); the function of the cable clamp is to hold the parts in place during the heating and cooling phases. - STD.AECMA PREN 3L55-OL3-ENGL 2000 1012311 0018335 413 Page 10 prEN 31 55-01 3: 2000 Centre Intermediate 55 66 Outer Not appl
38、icable X Cable as per table 1 - Probe distance: (150 i 2) mm Outer I 6,3 I 7,5 I 10,7 12 4.7 Tests See table 2. Table 2 - Tests Not ipplicable Applicable EN 2591- I kcording to EN 31 55-001 Test Remarks 1 o1 XI Visual examination Examination of dimensions and mass 102 201 Sontact resistance - low le
39、vel distance: (150 i 2) mm Test temperature: ambient Maximum contact resistance Initiai Aiter tests Contact 202 Jontact resistance at rated current Maximum contact resistance mf2 I I I lzl 55 166 I 94 1 1 Intermediate 204 3iscontinuity of contacts in the microsecond *ange Ix Method B Duration of dis
40、continuity: 5 Gn At150“C 2GR Method C Proof test voltage at sea level: 1 O00 V r.m.s. between centre contact and intermediate contaci and 500 V r.m.s. between intermediate contact and outer contact. Proof test voltage at altitude: 125 V r.m.s. at 1 ,I kPa pressure (33 O00 m). Leakage current: 2 mA 2
41、07 doltage proof test Electrical overload 21 o :ontinued) EN 2591- apacitv measurement X iapid change of temperature lould growth X X Method A, severity 300. The contacts shall be connecte( with a cable as per EN 3375 then fitted in connectors. The connectors fitted Witt appropriate cable clamps sha
42、l be mated and mounted or the shock apparatus usin! appropriate mounting systems Discontinuity: I 1 O0 ns X X The contacts shall be connecte1 to a cable which complies wit EN 3375 then frtted in th connectors. The connectors fitted with appropriate cable clamps shall be mated and mounted on the fixt
43、ure using appropriate mounting systems. The cables are clamped a minimum of 200 mm from the rear of the contacts at a fixec point of the assembly. Discontinuity: I 100 ns Test at (23 f 5) “C prEN 31 55-013:000 Table 2 (continued) I Appiica ble lest Not applicable I ,ccording to EN 31 55401 Remarks 2
44、1 1 21 2 ransfer impedance Ix I Under investigation 213 lx hielding effectiveness from 100 MHz to GHz 301 ndurance at temperature I Method B Duration: 1 O00 h 305 TA = (- 65 f 2) “C 306 307 alt mist 31 5 lesistance to fluids I X I See table 3. 402 ;hock 403 ;nusoida1 and random vibrations Mechanical
45、 endurance Damage by test probe 406 41 5 41 6 X X Robustness of the contact to flexion 41 7 Tensile resistance of crimped connections X 41 8 Gauge insertion and extraction forces in and out of a female contact Intermediate contact Gauge see 4.8. extraction insertion force force Gauge 1 initiai I E:
46、I initiai I tests After 1 Maximum 1 NA I NA I 51 6,12 Minimum I 0,14 I 0.11 I NA I NA :continued) STD.AECMA PREN 3155-013-ENGL 2000 1012321 0028337 29b Page 12 prEN 31 55-01 3: 2000 501 502 Soft soldering X Restricted entrance X 503 508 Distortion of the contaci after crimping Measurement of thickne
47、ss of coating on X X 509 51 3 51 4 Adhesion of coating on contacts Magnetic permeability X Solderability of contacts with self- X X contained solder and flux JP5 MIL-H-5606E SAE AS 1241 A MI L-L-7870A MI L-L-23699C MI L-L-7808J MlL-C-25769J, diluted 25 % Propanol + 75 % White spirit (RI 13 + Methano
48、l) Azeotrope R113AzM MIL-A-8243D Chiorobromethane of overpressure) Coolanol (less than 0,l MPa NATO F-44 NATO F-515 Skydrol500 64 Skydrol LD 4 NATO 0-142 NATO 0-156 - - - NATO S-742 - - 85 120 150 1 O0 5 1 25 5 125 5 Table 2 (concluded) Test EN 2591 - be recorded. I contacts Table 3 - List of fluids
49、 Fluid References Immersion I Stoving 1 Numbei Duration min Category 5 +; 25 I 85 I7 Fuel Mineral hydraulic fluid 15 0 85 1 100 1 5 Synthetic hydraulic fluid 15 0 Mineral lubricant 15 0 15 +: Synthetic lubricant 15 0 Cleaning products 5 +: 15 +: De-icing fluid 15 0 Extinguishing fluid 15 +: 50 I 25 I 5 Cooling fluid STD.AECMA PREN 3L55-OL3-ENGL 2000 I 10L23Ll 0018338 122 m Page 13 prEN 31 55-01 3: 2000 Gauge 4.0 Gauge The gauges used for test EN 2591 -41 8 are defined by figure 18 and table 4. Dimensions are in millimetres. A B Fig
