ISO INTERNATIONAL STANDARD 2685 Second edition 1998-12-15 Aircraft Environmental test procedure for airborne equipment Resistance to fire in designated fire zones Aéronefs Methode d'essai en environnement des équipements embarqués - Tenue au feu dans les zones désignées zones de feu> [so Reference number ISO 2685:1998(E) y IHS under itted without license from IHS Not for Resale ISO 2685:1998(E) Contents Page 1 Scope 1 2 Definitions 1 3 Test equipment... 1 4 Test requirements. 2 4.1 Test procedure 2 4.1.1 Mounting of specimen, 2 4.1.2 Choice of burner. 2 4.1.3 Calibration of burner 2 4.1.4 Test duration.. 2 4.2 Test acceptance conditions .. 2 Annexes A Examples of burners providing the standard flame .. 3 B Calibration procedure for burners.. 12 c Test conditions for fluid system components 19 D Test conditions for electrical cables and connectors..... 21 E Test conditions for structural components. 26 F Conversion factors... 27 G Bibliography 29 @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International OrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 · Switzerland Internet iso@iso.ch Printed in Switzerland Copyright International Organization for Standardization e from IHS Not for Resale @ ISO ISO 2685:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide federationofnationalstandardsbodies(lSOmemberbodies).Theworkof preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non- governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 2685 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles. This second edition cancels and replaces the first edition (iSO 2685:1992); of which it constitutes a technical revision. Annexes A and B form an integral part of this International Standard. Annexes C to G are for information only. NOTE- Annexes C, D and E are temporarily maintained for information purposespending thepreparation ofstandardsregarding specific test conditions for the products concerned. ii Not for Resale