1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 1996-1 1-29 prEN 3708-003 Edition P 2 November 1996 C2 Chairman Mr Pezzetta Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 6-1 200 BRUXELLES ICs : 49.060 PUBLISHED BY THE EUROPEAN A
2、SSOCIATION OF AEROSPACE INDUSTRIES (AECMAI Gulledelle 94 - 6-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 Supersedes edition P 1 September 1995 Descriptors : Aircraft industry, connecting equipment, terminal strips, specifications, dimensions, design, marking, connection diagrams E
3、NGLISH VERSION Aerospace series Modular interconnection systems Terminal junction systems Part 003 : Removable feedback modules version, sealed Product standard Srie arospatiale Luft- und Raumfahrt Systmes dinterconnexions modulaires Partie 003 : Version modules amovibles Verteilersystem in modulare
4、r Bauweise Teil 003 : Anreihbare Durchfhrungsmodule, Barrettes de raccordement Verteilermodule retour, tanches abgedichtet Norme de produit Produ ktnorm This “Aerospace Series Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is pu
5、blished on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that inter
6、changeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN
7、 (European Committee for Standardization) for formal vote. Page 3 prEN 3708-003 : 1996 1 Scope This standard specifies a removable version of feedback sealed modules, designed to operate at temperatures between - 55 OC and 175 OC and at a maximum altitude of 21 O00 m, constituting a terminal junctio
8、n system used in modular interconnection systems. 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 dat
9、ed 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 referred to applies. EN 2591-101 Aerospace series - Elements of electr
10、ical and optical connection - Test methods - Part 101 : Visual examination Aerospace series - Elements of electrical and optical connection - Test methods - Part 317 : Flammability 1) Aerospace series - Modular interconnection systems - Terminal junction systems - Part O01 : Technical specification
11、1) EN 2591 -31 7 EN 3708-001 3 Definitions For the purposes of this standard, the following definitions apply : See EN 3708-001. Previous page is blank 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 3708-003 : 1996 Contact size Code 4 Required characteristi
12、cs A B max. f Oll 4.1 Dimensions and masses See figure 1 and table 1. Dimensions and tolerances are in millimetres. The modules shall be coded A, B, C or D depending on their dimensions and the contacts with which they are used (see table 1). A recess shall be provided for coding labels, thickness :
13、 0,5. A B c D 1 See detail B I I - 22 21,6 10 20 20 10 16 25 12 12 25 15 TI - 0.1 Detail B (4:l) _I Figure 1 Table 1 Mass without contacts 9 max. 9 8 12 16 STD-AECMA PREN 3708-003-ENGL 179b 1012311 0012214 3bll 10 groups, 1 of 3 contacts 9 of 2 contacts 7 groups of 3 contacts 1 group of 21 contacts
14、5 groups, - 3 of 4 contacts 1 of 6 contacts 1 of 3 contacts 1 group of 9 contacts Page 5 prEN 3708-003 : 1996 A06 4.2 Interconnection diagrams See figures 2 to 6 and tables 2 to 6. 1 group of 12 contacts 3 groups of 7 contacts The following shall be visible on the contact access surface : - lines de
15、limiting each group of contacts; - the contact socket code for each group. The colour of these lines and codes shall contrast with that of the contact access surface. o1 02 03 04 05 Figure 2 : Interconnection diagrams for modules code A. contact size 22 Table 2 I Diagram I Feedback module, code A I
16、I number I Number of contacts I *O1 I I Definition of diagrams I 06 - STD=AECMA PREN 3708-003-ENGL 377b = 3032311 0032235 ZTO Diagram number Feedback module, code B Number of contacts I Definition of diagrams Page 6 prEN 3708-003 : 1996 02 03 O4 os o1 O8 09 IO 11 07 Figure 3 : Interconnection diagra
17、ms for modules code B, contact size 20 Table 3 BO 1 I I5 QrouDs of 2 contacts I 1 QrouD of IO contacts 2 groups, 2 groups, 3 groups, 1 of 2 contacts 1 of 8 contacts 1 of 4 contacts 1 of 6 contacts 2 of 2 contacts 1 of 6 contacts BO6 1 3 groups, 4 groups, 2 aroum of 5 contacts 2 of 4 contacts 1 of 2
18、contacts 3 of 2 contacts 1 of 4 contacts 10 of size 20 BO7 1 I BO8 BO9 I 14 groups, 2 of 2 contacts 2 of 3 contacts 3 groups, 1 of 5 contacts 1 of 2 contacts 1 of 3 contacts 2 of 3 contacts Page 7 prEN 3708-003 : 1996 Diagram number CO 1 CO2 CO3 CO4 CO5 CO6 CO8 o1 Feedback module, code C Number of c
19、ontacts Definition of diagrams 4 groups of 2 contacts 1 group of 8 contacts 2 groups, 2 groups of 4 contacts 3 groups, 3 groups, 2 groups of 4 contacts 1 of 2 contacts 1 of 6 contacts 2 of 2 contacts 1 of 4 contacts 2 of 3 contacts 1 of 2 contacts 8 of size 16 02 03 04 05 - 06 - O8 Figure 4 : Interc
20、onnection diagrams for modules code C, contact size 16 Table 4 STD=AECMA PREN 3708-003-ENGL 199b W 3012311 0032237 073 Diagram number C5 1 Page 8 prEN 3708-003 : 1996 Feedback module, code C Number of contacts 8 of size 20 2 of size 12 Definition of diagram 1 group of 10 contacts 51 Diagram number F
21、igure 5 : Interconnection diagram for hybrid module code C, contact sizes 20 and 12 Feedback module, code D Number of contacts Definition of diagrams Table 5 - o1 02 03 Figure 6 : Interconnection diagrams for module, code D, contact size 12 Table 6 171 6 of size 12 ID041 1 of 2 contacts I2 groups of
22、 3 contacts I - - STD.AECMA PREN 3708-003-ENGL L99b LOL23Ll OOL22L TOT Page 9 prEN 3708-003 : 1996 4.3 Flammability Test EN 2591 -31 7 - Method B 5 Designation EXAMPLE : Description block FEEDBACK MODULE Identity block I I EN3708-003A02 I- Number of this standard J Diagram number, see tables 2 to 6
23、NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 6 Marking Unless otherwise indicated, the marking shall be shown on the modules. This marking shall include : - the manufacturers reference; - the date of manufacture (year, week); - the name or
24、 mark of the manufacturer. 7 Delivery conditions The modules shall be supplied without contacts. 8 Packaging The modules shall be supplied in a package to protect them from damage. 9 Storage Every five years, an inspection shall be performed to test EN 2591-101. The date of inspection shall be noted and the modules repacked in accordance with 8. 1 O Technical specification See EN 3708-001.
