ASD-STAN PREN 3155-001-2014 Aerospace series Electrical contacts used in elements of connection Part 001 Technical specification (Edition P 5).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3155-001 Edition P 5 November 2014 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: 49.060 Supersedes edition

2、 P 4 of July 2006 and will supersede EN 3155-001:2009 Descriptors: Aerospace industry, aerospace equipment, element of electrical connection, electrical contact, characteristics, test, quality assurance, packaging ENGLISH VERSION Aerospace series Electrical contacts used in elements of connection Pa

3、rt 001: Technical specification Srie arospatiale Contacts lectriques utiliss dans les organes de connexion Partie 001 : Spcification technique Luft- und Raumfahrt Elektrische Kontakte zur Verwendung in Verbindungselementen Teil 001: Technische Lieferbedingungen This “Aerospace Series“ Prestandard ha

4、s been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Su

5、bsequent 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 review by users and formal agreement of ASD-STAN, it will be subm

6、itted 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 implement the EN at national level by giving the EN the status of a national standard and by withdrawing

7、any national standards conflicting with the EN. Edition approved for publication 1st November 2014 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2014 by ASD-STAN prEN 3155-001:2014 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative

8、references 3 3 Terms and definitions . 4 4 Conditions of use 6 5 Design and description . 6 6 Dimensions and mass .11 7 Operation 11 8 Tests 12 9 Quality assurance 21 10 Designation and marking 42 11 Delivery conditions 43 12 Packaging .43 13 Storage 43 Annex A (normative) Symbols of contact sizes i

9、n contact arrangement drawings .44 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval f

10、or Publication. prEN 3155-001:2014 (E) 3 1 Scope This standard specifies: the electrical, mechanical, environmental and dimensional characteristics of electrical contacts used in elements of connection, including coaxial, triaxial and quadrax contacts; the conditions for qualification, acceptance te

11、sting and quality assurance; the test programs and groups. It is applicable to removable crimp contacts, wrap contacts, solder contacts used in connectors or in other elements of electrical connection. In case of conflict or missing information between the EN 3155-001 and the product standards, the

12、product standard shall govern. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl

13、ies. EN 2083, Aerospace series Copper or copper alloy conductors for electrical cables Product standard EN 2242, Aerospace series Crimping of electric cables with conductors defined by EN 2083, EN 4434 and EN 2346 EN 2424, Aerospace series Marking of aerospace products EN 2591-100*, Aerospace series

14、 Elements of electrical and optical connection Test methods Part 100: General EN 3197, Aerospace Series Design and installation of aircraft electrical and optical interconnection systems EN 4434, Aerospace series Copper or copper alloy lightweight conductors for electrical cables Product standard (N

15、ormal and tight tolerances) EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts EN ISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation (ISO 1302:2002) EN ISO 27874, Metallic and othe

16、r inorganic coatings Electrodeposited gold and gold alloy coatings for electrical, electronic and engineering purposes Specification and test methods (ISO 27874:2008) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for l

17、ot-by-lot inspection * All parts quoted in this standard. prEN 3155-001:2014 (E) 4 ISO 8843, Aircraft Crimp-removable contacts for electrical connectors Identification system IEC 60352-1, Solderless connections Part 1: Wrapped connections General requirements, test methods and practical guidance 1)

18、TR 3198, Aerospace series Manufacturers identification monograms and marks for EN aerospace products 2) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 2591-100 and the following apply. 3.1 LSP Length of Selective Protection 3.2 point of electrical co

19、ntact position of point of application of the force which provides contact pressure 3.3 contact active area part of the contact which allows current to pass between the contact male and female 3.4 contact transition area all mechanical liaisons that contribute to electrical performance and which are

20、 different from contact active area defined in 3.3 3.5 coaxial contact male or female assembly of two contacts arranged coaxially enabling the connection of coaxial, shielded or bifilar cables See Figure 1. NOTE 1 Male coaxial contact where the outer contact is male; the central contact(s) may be ma

21、le or female. NOTE 2 Female coaxial contact where the outer contact is female; the central contact(s) may be male or female. Coupling face Key 1 Centre contact 2 Outer contact Figure 1 1) Published by: IEC International Electrotechnical Commission. http:/www.iec.ch/ 2) Published as ASD-STAN Technica

22、l Report at the date of publication of this standard. http:/www.asd-stan.org/ prEN 3155-001:2014 (E) 5 3.6 triaxial contacts male or female assembly of three contacts arranged coaxially, enabling the connection of shielded triaxial or bifilar cables See Figure 2. NOTE 1 Male triaxial contact where t

23、he outer contact is male; the central contact(s) may be male or female. NOTE 2 Female triaxial contact where the outer contact is female; the central contact(s) may be male or female. Key 1 Centre contact 2 Intermediate contact 3 Outer contact Figure 2 3.7 bifilar contact (twinax) assembly of three

24、contacts, two of which are parallel, the third being peripheral to these, enabling the connection of shielded bifilar cables See Figure 3. NOTE 1 Male twinax contact where the outer contact is male; the central contacts may be male or female. NOTE 2 Female twinax contact where the outer contact is f

25、emale; the central contacts may be male or female. Key 1 Twin parallel contacts 2 Outer contact Figure 3 3.8 quadrax contact assembly of five contacts, four of which are parallel, the fifth being peripheral to these, enabling the connection of shielded quadrax cables See Figure 4. NOTE 1 Male quadra

26、x contact where the outer contact is male; the central contacts may be male or female. NOTE 2 Female quadrax contact where the outer contact is female; the central contacts may be male or female. Key 1 Four parallel contacts 2 Outer contact Figure 4 prEN 3155-001:2014 (E) 6 4 Conditions of use 4.1 T

27、ypes of contact The contact specified shall be one of the following types: Type A: Removable contact for general application; Type B: Non-removable contact, See Note; Type C: Removable contact for thermocouple; Type D: Removable contact with screening feature (including the coaxial contacts, triaxia

28、l contacts and bifilar contacts). These have no characteristic impedance and are therefore not recommended for use at high frequency. Type E: Removable contact with screening feature, including coaxial, triaxial, bifilar and quadrax contacts. These have matched impedance. NOTE Type B contacts are de

29、fined in the connector specifications. 4.2 Temperature classes The contacts specified shall be from one of the classes specified below: class P: maximum operating temperature 125 C; class R: maximum operating temperature 150 C; class S: maximum operating temperature 200 C; class T: maximum operating

30、 temperature 260 C; class U: maximum operating temperature 350 C. The minimum operating temperature shall be 65 C, unless otherwise specified in the product standard. 4.3 Permissible wires and cables 4.3.1 The conductors which are acceptable in the crimping barrels and the coding by means of colour

31、bands are specified in ISO 8843. The contact detail specification shall state the acceptable conductors for each size of contact. 4.3.2 The type of cable, coaxial, triaxial, etc. shall be specified in the product standard. 5 Design and description 5.1 Design 5.1.1 General This standard covers male a

32、nd female contacts of all types and technologies: cylindrical or rectangular entry contacts, flat contacts of the blade type, etc., stamped, formed or machined contacts. Stamped and formed technology for body contact are not allowed. prEN 3155-001:2014 (E) 7 5.1.2 Mating end of female contact, cylin

33、drical contacts Unless otherwise stated in the product standard, the mating end of female contacts from size 08 to 24, shall e of the restricted entry type and shall not permit the introduction of a gauge which has a diameter 0,13 mm greater than the maximum diameter of the male contact. 5.1.3 Matin

34、g end of male contacts, cylindrical contacts Unless otherwise stated in the product standard, the mating end of the male contacts shall be approximately spherical. A flat is permitted at the end; its dimensions are given in Table 1. Table 1 Gauge dimensions for male contact Contact size Pin active a

35、rea contact diameter Diameter of flat at the mating end Contact size Pin active area Contact diameter Diameter of flat at the mating end mm mm mm mm 28 a 0,394 0,368 0,19 max. 14 2,01 1,96 0,99 0,61 26 a 0,521 0,495 0,25 max. 12 2,41 2,36 1,57 1,19 24 a 0,65 0,62 0,30 max. 10 3,20 3,15 2,08 1,57 23

36、0,705 0,659 0,30 max. 8 3,63 3,58 2,18 1,68 22 0,775 0,750 0,35 max. 6 4,55 4,50 2,44 1,93 20 1,04 0,99 0,51 0,13 4 5,74 5,69 2,79 2,29 16 1,61 1,56 0,81 0,43 a Inner contact of type D or type E. 5.1.4 Solder buckets The buckets shall be designed so that during soft soldering operations, the liquid

37、solder cannot run towards the end of the contact. 5.1.5 Crimp barrels Barrels shall be designed to accept the range of permissible conductors according to ISO 8843, EN 2083 and EN 4434. The use of a reducing sleeve is not recommended; this remains the responsibility of the user and shall be subject

38、to acceptance by the relevant OEMs. prEN 3155-001:2014 (E) 8 5.1.6 Terminations for wrapped connections The terminations for wrapped connections shall comply with IEC 60352-1. 5.1.7 Surface roughness (see EN ISO 1302) The surface roughness after coating in the male contact zone shall not exceed Ra 0

39、,8 m (or N6); in the other zones, it shall not exceed Ra 1,6 m (or N7). 5.1.8 Engagement sequence The engagement sequence for coaxial and quadrax contacts shall be outer contact, then inner contacts. Unless otherwise specified in the product standard, the engagement sequence for triaxial contacts sh

40、all be: outer contact, intermediate contact, centre contact. 5.2 Materials The materials used in the manufacture of contacts shall be consistent with those indicated in the definition document. When dissimilar metals are in close contact, the electromotive force of the galvanic couple shall not exce

41、ed 0,25 V see EN 3197. 5.3 Metallic protective plating Except contact type C contact. 5.3.1 General The protective coating may be either uniform over the entire surface of the contact, or it may be selective. The entire contact shall have a nickel undercoat and gold overcoat, with the exception of f

42、ittings or retaining features such as springs or spring clips which shall be made of a corrosion resisting material. Three functional areas are defined with their minimum gold plating thickness requirements as follows: Crimping area, Transition area, Active area, See description in paragraph from 5.

43、3.1.1 to 5.3.1.3. 5.3.1.1 Crimping area Crimping area shall be protected as follows: Inside barrel: EN ISO 27874 Ni 0,76 m min./Au(99,0) 0,1 m minimum in crimping area (from the extremity of the crimp barrel to the inspection hole). Inside barrel: EN ISO 27874 Ni 0,76 m min./Au(99,0) 0,05 m minimum

44、after inspection hole up to the bottom of the drilled barrel. Outside barrel: EN ISO 27874 Ni 0,76 m min./Au(99,0) 0,1 m minimum in crimping area. 5.3.1.2 Transition area Transition area are defined in 3.4 and Figure 7 and shall be protected as follows: EN ISO 27874 Ni 1,25 m min./Au(99,0) 0,2 m min

45、imum (or 0,1 m on each side of interfaces). prEN 3155-001:2014 (E) 9 5.3.1.3 Active area Active areas are defined in 3.3 and Figure 5, Figure 6 and shall be protected as follows: EN ISO 27874 Ni 1,25 m min./Au(99,0) 0,8 m minimum. As specified in the product standards, the gold plating on contact fo

46、r the LSP areas shall be in accordance with the above requirements. In the other zones, the thickness of the protections is generally not specified, but the minimum shall be as per 5.3.1.1 and 5.3.1.2. A change in colour of the gold plating is not a reason for rejection excepted in active areas Y se

47、e Figure 5b), key 4, male active area and X see Figure 5c), key 6, female active area. The gold plating thickness shall be sufficient to fulfil the performances required in this specification. However, and unless otherwise specified in the product standard, it shall never be lower than 0,8 m. It is

48、a supplier responsibility to define the right gold thickness to meet the performances tests required in this technical specification if the 0,8 m minimum are not sufficient to pass the expected requirements. 5.3.1.4 All other areas All other areas shall be protected as follows: EN ISO 27874 Ni 0,76

49、m min./Au(99,0) 0,1 m minimum. a) Engaged pin / socket contact b) Detail A: male contact c) Detail A: female contact Figure 5 Contact with integrated pressure element (1 of 2) prEN 3155-001:2014 (E) 10 d) e) Key 1 Male contact with maximum diameter 2 Pressure element 3 Engagement of contacts (given in connector technical specification) 4 Male active area (Y) see product standard 5