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1、 W - - - - - - - - 7 7- - 7- -7- - - - 7 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - w - - - - EN 3155-001:2009 (E) 2 Contents Page Foreword 3 1Scope 4 2Normative references 4 3Terms and definitions .5 4Conditions of use.6 5Design and description .7 6Dimensions an
2、d mass 12 7Operation . 12 8Tests . 12 9Quality assurance . 21 10Designation and marking . 31 11Delivery conditions . 32 12Packaging 32 13Storage . 32 Annex A (normative) Symbols of contact sizes in contact arrangement drawings . 33 EN 3155-001:2009 (E) 3 Foreword This document (EN 3155-001:2009) has
3、 been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the mem
4、ber countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2009, and conflicting national standards shall be withdrawn at the latest by August 2
5、009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Elect
6、rical 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 for Publication. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun
7、tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spa
8、in, Sweden, Switzerland and the United Kingdom. EN 3155-001:2009 (E) 4 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 fo
9、r qualification, acceptance testing and quality assurance; the test programmes and groups. It is applicable to removable crimp contacts, wrap contacts, solder contacts used in connectors or in other elements of electrical connection. 2 Normative references The following referenced documents are indi
10、spensable 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) applies. EN 2242, Aerospace series Control of tools used for crimping of electrical cables with condu
11、ctors defined by EN 2083 and EN 2346 1) EN 2591-100*, Aerospace series Elements of electrical and optical connection Test methods Part 100: General EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts IEC 60352-1, Solderless connections Part 1: Wr
12、apped connections General requirements, test methods and practical guidance 2) ISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptan
13、ce quality limit (AQL) for lot-by-lot inspection ISO 4524-1, Metallic coatings Test methods for electrodeposited gold and gold alloy coatings Part 1: Determination of coating thickness ISO 4524-5, Metallic coatings Test methods for electrodeposited gold and gold alloy coatings Part 5: Adhesion tests
14、 ISO 8843, Aircraft Crimp-removable contacts for electrical connectors Identification system * All parts quoted in Table 2. 1) Published as ASD Prestandard at the date of publication of this standard. 2) Published by International Electrotechnical Commission (IEC), 3 rue de Varemb, 1211 Geneva 20, S
15、witzerland. EN 3155-001:2009 (E) 5 3 Terms and definitions For the purposes of this document, the following terms and definitions apply: See EN 2591-100. 3.1 point of electrical contact position of point of application of the force which provides contact pressure 3.2 contact active area part of the
16、contact which allows current to pass between the contact and another element 3.3 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 ce
17、ntral contact(s) may be male 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 3.4 triaxial contacts male or female assembly of three contacts arranged coaxially, enabl
18、ing the connection of shielded triaxial or bifilar cables See Figure 2. NOTE 1 Male triaxial contact where the 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 Ce
19、ntre contact 2 Intermediate contact 3 Outer contact Figure 2 EN 3155-001:2009 (E) 6 3.5 bifilar contact (twinax) assembly of three contacts, two of which are parallel, the third being peripheral to these, enabling the connection of shielded bifilar cables See Figure 3. Key 1 Twin parallel contacts 2
20、 Outer contact Figure 3 3.6 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. Key 1 Four parallel contacts 2 Outer contact Figure 4 4 Conditions of use 4.1 Types of contact The
21、contact specified shall be one of the following types: Type A: contact for general application; Type C: contact for thermocouple; Type D: contact with screening feature (including the coaxial contacts, triaxial contacts and bifilar contacts). These have no characteristic impedance and are therefore
22、not recommended for use at high frequency. Type E: contact with screening feature, including coaxial, triaxial, bifilar and quadrax contacts. These have matched impedance. NOTE Non-removable contacts are defined in the connector specifications. 4.2 Temperature classes The contacts specified shall be
23、 from one of the classes specified below: EN 3155-001:2009 (E) 7 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 temperature 260 C; class U: maximum operating temperature 350 C. The m
24、inimum 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 bands are specified in ISO 8843. The contact detail specification shall
25、 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 and female contacts of all types and technologies: cylindrical or rectan
26、gular entry contacts, flat contacts of the blade type, etc., stamped, formed or machined contacts. 5.1.2 Mating end of female contact, cylindrical contacts Unless otherwise stated in the product standard, the mating end of female contacts from size 12 to 24, shall be of the restricted entry type and
27、 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 Mating end of male contacts, cylindrical contacts Unless otherwise stated in the product standard, the mating end of the male contacts shall be approximately spheri
28、cal. A flat is permitted at the end; its dimensions are given in Table 1. EN 3155-001:2009 (E) 8 Table 1 Contact size Contact diameter Diameter of flat at the end Contact size Contact diameter Diameter of flat at the end mm mm mm mm 28 a 0,394 0,368 0,19 max. 10 3,20 3,15 2,08 1,57 26 a 0,521 0,495
29、0,25 max. 8 3,63 3,58 2,18 1,68 24 a 0,648 0,622 0,30 max. 6 4,55 4,50 2,44 1,93 22 0,775 0,750 0,35 max. 4 5,74 5,69 2,79 2,29 20 1,04 0,99 0,51 0,13 2 7,21 7,16 4,27 3,76 16 1,61 1,56 0,81 0,43 0 9,09 9,04 6,15 5,64 14 2,01 1,96 0,99 0,61 2/0 10,34 10,29 7,39 6,88 12 2,41 2,36 1,57 1,19 4/0 12,72
30、12,67 9,80 9,27 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 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 a
31、ccording to ISO 8843. The use of a reducing sleeve is not recommended; this remains the responsibility of the user and shall be subject to acceptance by the relevant authorities. 5.1.6 Terminations for wrapped connections The terminations for wrapped connections shall comply with IEC 60352-1. 5.1.7
32、Surface roughness (see ISO 1302) The surface roughness after coating in the male contact zone shall not exceed Ra 0,8 m (or N6); in the other zones, it shall not exceed Ra 1,6 m (or N7). EN 3155-001:2009 (E) 9 5.1.8 Engagement sequence The engagement sequence for coaxial and quadrax contacts shall b
33、e outer contact, then inner contacts. Unless otherwise specified in the product standard, the engagement sequence for triaxial contacts shall be: outer contact, intermediate contact, centre contact. 5.2 Materials The materials used in the manufacture of contacts shall be consistent with those indica
34、ted in the definition document. When dissimilar metals are in close contact, the electromotive force of the galvanic couple shall not exceed 0,25 V. 5.3 Metallic protective plating 5.3.1 General The protective coating may be either uniform over the entire surface of the contact, or it may be selecti
35、ve. The protection shall be thicker in the contact active areas. The minimum thickness of protection for active areas may or may not be specified in the product standard. The entire contact shall have an appropriate undercoat (silver undercoat is prohibited), with the exception of fittings or retain
36、ing features such as springs or spring clips which may be made of a corrosion resisting material. 5.3.2 Uniform protection The entire surface of the contacts shall be protected in accordance with the requirements of each product standard. 5.3.3 Selective protection If required by the product standar
37、d, selective plating shall be applied as shown in Figures 1 to 8, depending on the particular case. Protection shall be complete in contact active areas X and Y. In the other zones, the thickness of the protections is not generally specified. Outside contact active areas X and Y, a change in colour
38、of the gold plating is not a reason for rejection. EN 3155-001:2009 (E) 10 Key 1 Male contact of maximum diameter 2 Contact active area X (internal diameter) 3 Clip 4 Contact active area X 5 Point of electrical contact Figure 5 Female contact with integral contact pressure element Key 1 Contact acti
39、ve area X Figure 6 Female contact with separate pressure elements Key 1 Contact active area Y Figure 7 Male contact EN 3155-001:2009 (E) 11 Key 1 Point of electrical contact 2 Contact active area X Figure 8 Tuning fork contact Key 1 Contact active area Y Figure 9 Blade contact Key 1 Contact active a
40、rea Y Figure 10 Male contact, coaxial Key 1 Contact active area X Figure 11 Female contact, coaxial EN 3155-001:2009 (E) 12 Key 1 Contact active area Y Figure 12 Male contact, triaxial Key 1 Contact active area X Figure 13 Female contact, triaxial Key 1 Contact active area Y Figure 14 Male contact,
41、quadrax Key 1 Contact active area X Figure 15 Female contact, quadrax 6 Dimensions and mass The dimensions of the contacts and their mass are defined in the product standard. 7 Operation The tools for connecting and installing the contacts are defined in the product standard. 8 Tests See Table 2. Al
42、l the tests are carried out without elements of connection, with the exception of tests EN 2591-402, EN 2591-403, EN 2591-406 and EN 2591-415. EN 3155-001:2009 (E) 13 Table 2 EN 2591- Test Details 101 Visual examination Initial examination: before and after wiring Details to be examined: identificat
43、ion of materials in accordance with definition document; identification; aspect before and after wiring; marking; surface roughness in accordance with 5.1.7. For crimped terminations, after wiring, the crimp joint shall be examined (10 times magnification) for cracking exposing the base metal. 102 Examination of dimensions and mass In accordance with the product standard. 201 Contact