1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 3841-406 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 406: Flammability Srie arospatiale Disjoncteurs Mthodes dessais Partie 406 : Ininflammabilit Luft- und Raumfahrt Schutzschalter Prfverfahren Teil 406: Nichtentflammbarkeit This “Aerospace Series“ Prestandard has been drawn up under the respons
3、ibility 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 concerned Domain following member comments. Subsequent to the publicatio
4、n 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 agreement of AECMA-STAN it will be submitted as a draft European
5、 Standard to CEN (European Committee for Standardization) for formal vote. I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 3841-406: 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
6、the rules of AECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 3841-406: 2003 1 Scope This standard specifies a method of verifying the flammability of plastic (synthetic) materials used in the housing, insulator base and any
7、parts exposed to arcs or glowing elements of circuit breakers. 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 herea
8、fter. 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. IEC 60695-2-1 O, Fire Hazard Testing
9、 - Part 2-10: Glowing/Hot-Wire Based Test Methods - GlowMire Apparatus and Common Test Procedure 3 Method The test apparatus is described in IEC 60695-2-10, clause 4 and Figure 2. The glow-wire test shall be carried out in accordance with IEC 60695-2-10 and the following requirements: - the tested p
10、arts shall be fitted with the tip of the glow-wire positioned at a distance of (200 f 5) mm above the white board (approximately 10 mm thick and covered with a single layer of tissue paper); - the test shall be carried out on part supporting current carrying parts (main and signal) and parts of the
11、housing in contact with electric arcs; - temperature of the tip of the glow-wire: (960 f 15) OC; - duration of application: (30 f 1) s. 4 Req u i remen t The test shall be considered to be satisfactory if a flame or glowing of the tested part is extinguished within 30 s of removing the glow-wire and if there is no ignition of the tissue paper.
