1、I CEN PREN*E591 (PART*CLL) 92 3404589 002b T E A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2591 Part CI 1 Issue P 1 June 1992 EDIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATE%IELAROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex - Tl. (1
2、) 47.36.98.76 UDC : Key words -ENGLISH VERSION -. Aerospace series Elements of electrical and optical connection Test methods Part CI i - Low air pressure Srie arospatiale Luft- und Raumfahrt Mthodes dessais Prfverfahren Organes de connexion lectrique et optique Partie CI 1 - Basse pression atmosphr
3、ique Elektrische und optische Verbindungselemente Teil CI 1 - Niedriger Luftdruck This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial. If is published on green paper for the needs of AECMA-Members. It h
4、as been technically approved by the experts of the concerned Commission following comment b y the Member countries. Subsequent to the publication of this pre.-standard, the technical cntent shallnot be changed to an extent that interchangeability is affected, physically or functionally, without re-i
5、dentification 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 (European Committee for Standardization) for final vote. Noia - Exi
6、ra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue Jean-Jacqiies Rousseati - 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication Comments should be sent within six months after the date of publication decision A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 92138
7、Issy-les-Moulineaux Cdex- FRANCE 1992-06-05 C2 Chairman M. J. LE CUNFF 0 aecma 1992 CEN PREN*259L (PART*CLL) 92 3404589 0026890 6 P prEN 2591-C11 Page 3 P 1 Scope and field of application /. This standard specifies a method of assessing the ability of an element of connection to operate under high a
8、ltitude conditions. It shall be used together with EN 2591. This test forms part of test C 2 : Climatic sequence. 2 References EN 2591 Aerospace series - Elements of electrical and optical connection - Test methods - General EN 259 1 -B7 Aerospace series - Elements of electrical and optical connecti
9、on - Test methods - Part B7 - Voltage proof test 1) ! EN 2591-C2 Aerospace series - Elements of electrica1 and optical connection - Test methods - Part C2 - Climatic sequence 2) 3 Preparation of specimens 3.i The specimens shall be fitted with their normal accessories and shall be mated or unmated w
10、ith protective cover as specified by the technical specification. They shall be wired as specified by the technical specification, 50 % of wires shall be of the minimum diameter, 50 % of the maximum diameter, evenly distributed. 3.2 Unless indicated in the technical specification, the following deta
11、ils shall be specified : - type of wire, - mated or unmated specimen with protective cover, - initial measurements and requirements, - method in test EN 2591-B7 and proof voltage. 4 Apparatus The test chamber shall have provisions for sealing of electrical connections going in and out of the chamber
12、 to maintain the required pressure inside. The volume of the chamber shall not exceed 1 m3. 1) In preparation at the date of publication of the present standard. 2) Published as AECMA pre-standard at the date of publication of the present standard. 7 u9 Previous page is blank CEN PRENx2591 (PART*CLL
13、) 92 3404589 002b8L 8 I prEN 259 1 -CI 1 Page 4 5 Method 5.1 Preconditioning and initial measurements (if applicable) Preconditioning and initial measurements shall be performed in accordance with the technical specification. 5.2 Severity The severity shall be selected from the values listed in the
14、table 1. Table 1 5.3 Procedure 5.3.1 The chamber pressure shall be reduced from room ambient to the specified pressure indicated in the technical specification within 5 min to 15 min and shall be maintained at this level for 30 min. 5.3.2 Intermediate measurement and requirement The voltage proof test (EN 2591-B7) shall be carried out using the method and voltage indicated in the technical specification. The measured value shall comply with test EN 2591 -67 requirement. 5.3.3 The chamber pressure shall then be returned to ambient pressure level within 1 min.
