1、-_ CEN PREN*259L (PARTxB4) 92 D 3404589 00335L 2T D Approved by COMITE DE NORMALISATION of A.E.C.M.A. 1992-11-02 A.E.C.M.A. STANDARD prEN 2591 I The equivalent versions in French and German languages can be supplied by E N A E - Technopolis 54 199. tue Jean.Jacques Rousseau - 92138 ISSY LES MOULINEA
2、UX CEOEX - FRANCE NORME A.E.C.M.A. A.E.C.M.A. NORM I Part 84 Edition 1 November 1992 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATcRIEL AeROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex - Tl. (1) 47.36.98.76 UDC : 621.31 6.541 : 681.3 : 620.1 Ke
3、y words : Aircraft industry, aircraft equipment, connecting equipment, tests, measurements, elelhical resistance, contact resistance, tests duration ENGLISH VERSION Aerospace series Elements of electrical and optical connection Test methods Part 64 - Discontinuity of contacts in the microsecond rang
4、e Srie arospatiale Luft- und Raumfahrt lectrique et optique Verbindungselemente Organes de connexion Elektrische und optische Mthodes dessais Prfverfa hren Partie 04 - Discontinuit des contacts dans la gamme des microsecondes Teil 84 - Discontinuity of contacts in the micrisecond range This -Aerospa
5、ce series. standard has been drawn up under the responsibility of AECMA Association Europenne des Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions English, French, German). It will be submitted as a draft European Standard to CEN European Committee f
6、or Standardization) for final vote. CEN PREN*2571 (PARTUBq) i2 = 3404589 0033539 L2b = 7 prEN 2591-B4 Page 3 1 Scope and field of application This standard specifies a method for measuring the duration of discontinuity across a pair of mated contacts. It shall be used together with EN 2591. 2 Refere
7、nces EN 2591 Aerospace series - Elements of electrical and optical connection - Test methods - General 3 Preparation of specimens 3.1 They shall be fitted with their contacts wired in accordance with the technical specification and mated. 3.2 Unless indicated in the technical specification, the foll
8、owing details shall be specified : - maximum duration of discontinuity, - method to be used (A or BI, - test duration, - mechanical stresses, - climatic stresses. 4 Apparatus Tests shall be carried out with an appropriate apparatus or measuring device (see figures 1 and 2). 5 Method A d.c. current f
9、rom 1 O mA to 1 O0 mA shall flow across every contact. The current shall be applied during the whole test and discontinuities, if any, shall be recorded. Previous page is blank CEN PRENa2591 (PART*B4) 92 m 3Li04589 0033520 948 m prEN 2591-B4 Page 4 5.1 Method A All mated contacts shall be measured s
10、eparately and simultaneously. Element of connection 7 1 I Power supply Figure 1 5.1.1 Number of contacts to be measured per site See table 1. Table 1 5 Nr60 60 NI 130 5.2 Method B All wired contacts of the element of connection shall be measured in series. . Element of connection Measuring rppa ra tu roucr suppiy Figure 2 CEN PRENx2591 (PART*B4) 92 m 3404589 0033521 884 m -_ prEN 2591-64 Page 5 5.3 Requirement During the test there shall not be any duration of discontinuity greater than or equal to that spec fied.
