1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 3841-403 Edition P 3 March 2003 Comments should be sent within six months after the date of publication to Electrical Domain AECMA-STAN ICs: 49.060 Descriptors: Srie arospatiale Disjoncteurs Mthodes dessais Par
2、tie 403 : Humidit ENGLISH VERSION Aerospace series Circuit breakers Test methods Part 403: Humidity Supersedes edition P 2 September 1998 Luft- und Raumfahrt Schutzschalter Prfverfahren Teil 403: Feuchtigkeit This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STA
3、N (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandar
4、d, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (Eu
5、ropean Committee for Standardization) for formal vote. I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 3841-403: 2003 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Electrical Domain. After inquiries and votes carried out in accordance with the rules of AECMA-S
6、TAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 3841-403: 2003 1 Scope This standard specifies a method of verifying the ability of circuit breakers to withstand a humidity test. It shall be used together with EN 3841-100. 2 Normat
7、ive 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 amendments to or revisions of an
8、y 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. IS0 7137, EN 3841-100, Aircraft - Environmental conditions and test procedures for airborne equipment) Aero
9、space series - Circuit breakers - Test methods - Patt 700: General 2) 3 Method 3.1 Mounting The circuit breakers shall be mounted on a support placed in the chamber so that no drops can fall on them. 3.2 Procedure The circuit breakers shall be tested in the ON position. The humidity test shall be ca
10、rried out according to test procedure 1.3 of IS0 7137. The technical specification shall specify the category. 3.3 Requirement Requirements in accordance with technical specification and product standard. 1) Endorsement of EUROCAEIED-14C and RTCNDO-160C 2) Published as AECMA Prestandard at the date of publication of this standard
