1、STD=AECMA PREN 2349-VLZ-ENGL 2000 1012311 0037588 b22 AECMA STANDARD prEN 2349-41 2 NORME AECMA Edition P I AECMA NORM January 2000 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 1 I I cs: Descrip
2、tors: ENGLISH VERSION Aerospace series Requirements and test procedures for relays and contactors Part 412: Seal Srie arospatiale Exigences et mthodes dessais des relais et contacteurs Partie 412: tanchit Luft- und Raumfahrt Anforderungen und Prfverfahren fr Relais und Schaltschtze Teil 41 2: Stirnf
3、lchendichtheit This Herospace Series” Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). If is published on green paper for the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committ
4、ee following comment by the Member countries. Subsequent to fhe publication of this Prestandard, the technical content shall not be changed to an extent that interchangeabilify is affected, physically or functionally, without re-identification of the standard. After examination and signature of the
5、AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries if will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue Je
6、an-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication Comments should be sent within six months after the date of publication to C2 Chairman 2000-01 -31 AECMA Gulledelle 94 8-1200 BRUXELLES Mr Peuetta I I aecma 2000 STD.AECMA PREN 23q9-412-ENGL 2000 1012311 0017587 5
7、b7 Page 2 prEN 2349-412: 2000 Contents Scope . 3 Normative references 3 Method . 3 Requirements 3 . STD-AECMA PREN 23?49-qIZ-ENGL 20UO LOI23IL 0037590 280 Page 3 prEN 2349-412: 2000 I Scope This standard specifies a method for checking the leakage rate of relays and contactors. It shall be used toge
8、ther with EN 2349-100. 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 dated references, subsequent a
9、mendments 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 2349-1 O0 Aerospace series - Requirements and test procedures for relays
10、and contactors - Part 100: General requirements 1) EN 2349-201 Aerospace series - Requirements and test procedures for relays and contactors - Part 201 : Visual examination 2) IEC 68-2-17 Environmental testing - Part 2: Tests - Test Q: Sealing 3 Method 3.1 Mounting For relays or contactors with plug
11、-socket holders, only the switching device shall be tested. 3.2 Procedure The relay or contactar shall be subjected to a seal test in accordance with IEC 68-2-17. 4 Requirements 4.1 Gas-tig htness Relays or contactors with a sealed volume of more than 30 cm3 shall show a leakage rate, at a pressure
12、differential of 100 kPa (1 bar), of at most 1 x Relays or contactors with a sealed volume of less than 30 cm3 shall show a leakage rate of at most 1 x IO? cm3 I s in accordance with Test Q of IEC 68-2-17. cm3 I s per 15 cm3 hermetically sealed volume. 4.2 Liquid-tig htness 10 s ater immersion no visible bubbles shall escape, in accordance with Test Qf of IEC 68-2-17 4.3 I ns pecti on Test in accordance with EN 2349-201. No signs of leakage or bubbles. 1) In preparation at the date of publication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard
