1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 3841 -505 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: ENGLISH VERSION Supersedes edition P 2 September
2、 1998 Aerospace series Circuit breakers Test methods Part 505: Strength of main terminals Srie arospatiale Disjoncteurs Mthodes dessais Partie 505 : Rsistance des lments de raccordement principaux Luft- und Raumfahrt Schutzschalter Prfverfahren Teil 505: Festigkeit der Hauptkontakt-Anschlsse This “A
3、erospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (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 concerne
4、d Domain following member comments. Subsequent to the publication of this Prestandard, 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
5、agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 3841-505: 2003 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Electrical D
6、omain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 3841-505: 2003 1 Scope This standard specifies a method of verifying the strength of main terminals
7、 of circuit breakers. It shall be used together with EN 3841-100. 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 he
8、reafter. For dated 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 3841-100, Aerospace series - C
9、ircuit breakers - Test methods - Patt 700: General 1) 3 Method 3.1 Tightening torque The connection screws shall be tightened to the torque specified in the technical specification. This torque shall be maintained for 1 min. The connection screws shall then be loosened. The test shall be carried out
10、 five times with each terminal. 3.2 The terminals shall be subjected to the withdrawal and pushing forces indicated in the product standard. The forces shall be maintained for 1 min. Strength of the terminal bodies in the housing 3.3 Requirement Requirements in accordance with technical specificatio
11、n and product standard. The terminals and the housing of the circuit breakers shall neither break nor change their shape beyond the dimensional limits indicated in the product standard. The screw thread shall not be stripped. 1) Published as AECMA Prestandard at the date of publication of this standard
