1、Aerospace electrical requirements Sleeves and moulded shapes Specifications for aircraft use PD ISO/TR 21891:2017 BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017 Aerospace electrical requirements Sleeves and moulded shapes Specifications for aircraft use E
2、xigences lectriques pour quipements arospatiaux Gaines et pices moules disolation Spcification pour utilisation sur aeronef TECHNICAL REPORT ISO/TR 21891 Reference number ISO/TR 21891:2017(E) First edition 2017-07 National foreword This Published Document is the UK implementation of ISO/TR 21891:201
3、7. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the nece
4、ssary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017 ISBN 978 0 580 95449 8 ICS 49.060 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Documen
5、t was published under the authority of the Standards Policy and Strategy Committee on 31 July 2017. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD ISO/TR 21891:2017 ISO 2017 Aerospace electrical requirements Sleeves and moulded shapes Specifications for aircr
6、aft use Exigences lectriques pour quipements arospatiaux Gaines et pices moules disolation Spcification pour utilisation sur aeronef TECHNICAL REPORT ISO/TR 21891 Reference number ISO/TR 21891:2017(E) First edition 2017-07 PD ISO/TR 21891:2017 ISO/TR 21891:2017(E)ii ISO 2017 All rights reserved COPY
7、RIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, w
8、ithout prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.
9、iso.org PD ISO/TR 21891:2017 ISO/TR 21891:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electroni
10、c or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier,
11、 Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgISO/TR 21891:2017(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 List of standards 1 Bibliography 7 ISO 2017 All rights reserved iii Contents Page PD ISO/TR 21
12、891:2017 ISO/TR 21891:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interes
13、ted 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 C
14、ommission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documen
15、ts should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsi
16、ble for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents). Any trade name used in this document is information given
17、 for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) princip
18、les in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html. This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 1, Aerospace electrical requirements.iv ISO 2017 All rights reserved PD ISO/TR 21891:2017
19、ISO/TR 21891:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a
20、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
21、 (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should
22、 be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for i
23、dentifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents). Any trade name used in this document is information given for the
24、convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in th
25、e Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html. This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 1, Aerospace electrical requirements.iv ISO 2017 All rights reserved ISO/TR 21891:2017(E) Introduct
26、ion This document has been drawn up by ISO/TC 20/SC 1 and IEC/SC 15C in order to create a list of IEC and other standards for insulation and/or mechanical/environmental protection sleeves and heat shrink moulded shapes suitable for use on aircraft. The range of sleeves includes heat shrink, extruded
27、 (non- heat shrink) and textile. The list draws primarily upon IEC 60684 series for flexible insulating sleeving. IEC 60684 series is an ongoing programme and new standards are being added periodically. ISO 2017 All rights reserved v PD ISO/TR 21891:2017PD ISO/TR 21891:2017 Aerospace electrical requ
28、irements Sleeves and moulded shapes Specifications for aircraft use 1 Scope This document brings together, in a single list, those standards for insulation and/or mechanical/environmental protection sleeves and heat shrink moulded shapes that have been determined as being suitable for use on aircraf
29、t. The range of sleeves includes heat shrink, extruded (non-heat shrink) and textile. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited app
30、lies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60684-1, Flexible insulating sleeving Part 1: Definitions and general requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 606
31、84-1 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp 4 List of standards Table 1 gives the list of st
32、andards together with information on usage or any limitations for aircraft applications. Table 1 List of applicable standards Standard Description Usage, notes and related national specifications (informative) IEC 606841 Flexible insulating sleeving Definitions and general requirements Top level tec
33、hnical specification IEC 606842 Flexible insulating sleeving Methods of test Test methods IEC 606843-116/118 Flexible insulating sleeving Extruded polychloroprene Used for areas of occasional contamination by mineral oils, petroleum fuels, and mineral or cas- tor oil based hydraulic fluids. See also
34、 BS 4G 198-1 Type 1 IEC 606843-121/124 Flexible insulating sleeving Extruded silicone Oil and hydraulic fluid resistant. Not for contact with fuels. See also BS 4G 198-1 Type 4 IEC 606843-136 Flexible insulating sleeving Extruded fluorosilicone Oil, hydraulic fluid and fuel resistant. See also BS 4G
35、 198-1 Type 3 TECHNICAL REPORT ISO/TR 21891:2017(E) ISO 2017 All rights reserved 1 PD ISO/TR 21891:2017 ISO/TR 21891:2017(E) Standard Description Usage, notes and related national specifications (informative) IEC 606843-145/147 Flexible insulating sleeving Extruded PTFE Slip-on sleeves suitable for
36、identification of electric cables and insulated equipment wires. Resistant to fuels, lubricants and hydraulic fluids, including ester-based lubricants and ester-based hydraulic fluids. See also BS 3G 198-2 Type 7 IEC 606843-165 Flexible insulating sleeving Extruded polyolefin, flame retarded, limite
37、d fire hazard This sleeving is flexible, flame retarded and suitable for use in areas where smoke, gases or corrosive by-products would constitute a particular hazard. IEC 606843-211 Flexible insulating sleeving Heat shrink, ratio 2:1, semi-rigid, polyolefin This sleeving is semi-rigid and flame ret
38、arded. It is suitable where strain relief and mechanical support are required. It is available in colours and transparent. The transparent sleeving is not flame retarded. See also: BS 4G 198-3 Type 11C AMS DTL 23053/6 IEC 606843-212 Flexible insulating sleeving Heat shrink polyolefin sleevings Type
39、A and C sleevings are flexible and flame retarded. They are suitable for general purposes. It is available in colours and transpar- ent. The transparent sleevings, type B and D are not flame retarded. All four types are available in 2:1 and 3:1 shrink ratios. See also: BS 4G 198-3 Type 11B AMS DTL 2
40、3053/5 VG 95343-5 Type A and B IEC 606843-216 Flexible insulating sleeving Heat shrink, ratio 2:1/3:1, limited fire hazard This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also i
41、n a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. See also: BS 4G 198-3 Type 15 VG 95343-5 Type LTable 1 (cont
42、inued) 2 ISO 2017 All rights reserved PD ISO/TR 21891:2017 ISO/TR 21891:2017(E) Standard Description Usage, notes and related national specifications (informative) IEC 606843-145/147 Flexible insulating sleeving Extruded PTFE Slip-on sleeves suitable for identification of electric cables and insulat
43、ed equipment wires. Resistant to fuels, lubricants and hydraulic fluids, including ester-based lubricants and ester-based hydraulic fluids. See also BS 3G 198-2 Type 7 IEC 606843-165 Flexible insulating sleeving Extruded polyolefin, flame retarded, limited fire hazard This sleeving is flexible, flam
44、e retarded and suitable for use in areas where smoke, gases or corrosive by-products would constitute a particular hazard. IEC 606843-211 Flexible insulating sleeving Heat shrink, ratio 2:1, semi-rigid, polyolefin This sleeving is semi-rigid and flame retarded. It is suitable where strain relief and
45、 mechanical support are required. It is available in colours and transparent. The transparent sleeving is not flame retarded. See also: BS 4G 198-3 Type 11C AMS DTL 23053/6 IEC 606843-212 Flexible insulating sleeving Heat shrink polyolefin sleevings Type A and C sleevings are flexible and flame reta
46、rded. They are suitable for general purposes. It is available in colours and transpar- ent. The transparent sleevings, type B and D are not flame retarded. All four types are available in 2:1 and 3:1 shrink ratios. See also: BS 4G 198-3 Type 11B AMS DTL 23053/5 VG 95343-5 Type A and B IEC 606843-216
47、 Flexible insulating sleeving Heat shrink, ratio 2:1/3:1, limited fire hazard This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the appl
48、ication and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. See also: BS 4G 198-3 Type 15 VG 95343-5 Type LTable 1 (continued) 2 ISO 2017 All rights reserved ISO/TR
49、21891:2017(E) Standard Description Usage, notes and related national specifications (informative) IEC 606843-240/243 Flexible insulating sleeving Heat shrink PTFE This sleeving is milk-white translucent. It is suitable for use where resistance to chemicals and high temperature performance are required. It is flame resistant and has a low or high shrink ratio depending on type. See also: BS 3G 198-4 Type 21A/21B AMS DTL 23053/12 IEC 606843-246 Fle
