1、BSI Standards Publication BS ISO 8820-3:2015 Road vehicles Fuse-links Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)BS ISO 8820-3:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 8820-3:2015. It sup
2、ersedes BS ISO 8820-3:2010 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AUE/16, Data Communication (Road Vehicles). A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport
3、 to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 76938 2 ICS 43.040.10 Compliance with a British Standard cannot confer immunity from legal obligat
4、ions. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2015. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO 8820-3:2015 ISO 2015 Road vehicles Fuse-links Part 3: Fuse-links with tabs (blade type)
5、 Type C (medium), Type E (high current) and Type F (miniature) Vhicules routiers Liaisons fusibles Partie 3: Liaisons fusibles cavalier (Type lame), Type C (moyen), Type E (courant lev) et Type F (miniature) INTERNATIONAL STANDARD ISO 8820-3 Fourth edition 2015-09-15 Reference number ISO 8820-3:2015
6、(E)BS ISO 8820-3:2015ISO 8820-3:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, 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 mecha
7、nical, 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, Geneva, S
8、witzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 8820-3:2015ISO 8820-3:2015(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Marking, labelling, and colour coding 1 5 Tests and requirements 2 5.1 General . 2 5.1.1 Test criteria
9、 . 2 5.1.2 Test sequence 3 5.2 Voltage drop 3 5.2.1 Tests 3 5.2.2 Requirements . 4 5.3 Transient current cycling . 5 5.3.1 Test . 5 5.3.2 Requirements . 6 5.4 Environmental conditions . 6 5.5 Operating time-rating . 6 5.5.1 Test . 6 5.5.2 Requirement 6 5.6 Current steps 7 5.6.1 Test . 7 5.6.2 Requir
10、ement 7 5.7 Breaking capacity . 7 5.7.1 Test . 7 5.7.2 Requirement 9 5.8 Strength of terminals . 9 5.8.1 Test 10 5.8.2 Requirements 10 5.9 Test cable sizes .10 5.10 Temperature rise 11 6 Dimensions 12 6.1 Fuse-links Types C, E, and F 12 6.2 Designation example .15 Annex A (informative) Temperature r
11、ise test .16 Bibliography .17 ISO 2015 All rights reserved iii Contents PageBS ISO 8820-3:2015ISO 8820-3:2015(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
12、 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 p
13、art in the work. ISO collaborates closely with the International Electrotechnical Commission (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 parti
14、cular the different approval criteria needed for the different types of ISO documents 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 t
15、his document may be the subject of patent rights. ISO shall not be held responsible 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 ww
16、w.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to
17、the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 32, Electrical and electronic components and general system aspects. This fourth edition ca
18、ncels and replaces the third edition (ISO 8820-3:2010), which has been technically revised. ISO 8820 consists of the following parts, under the general title Road vehicles Fuse-links: Part 1: Definitions and general test requirements Part 2: User guidelines Part 3: Fuse-links with tabs (blade type)
19、Type C (medium), Type E (high current) and Type F (miniature) Part 4: Fuse-links with female contacts (Type A) and bolt-in contacts (Type B) and their test fixtures Part 5: Fuse-links with axial terminals (Strip fuse-links) Types SF 30 and SF 51 fixtures Part 6: Single-bolt fuse-links Part 7: Fuse-l
20、inks with tabs (Type G) with rated voltage of 450 V Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450 V Part 9: Fuse-links with shortened tabs (Type K) Part 10: Fuse-links with tabs Type L (high current miniature)iv ISO 2015 All rights reservedBS ISO 8820-3:2015INTERN
21、ATIONAL ST ANDARD ISO 8820-3:2015(E) Road vehicles Fuse-links Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature) 1 Scope This part of ISO 8820 specifies fuse-links with tabs (blade-type) Type C (medium), Type E (high current), and Type F (miniatur
22、e) for use in road vehicles. It establishes, for these fuse-link types, the rated current, test procedures, performance requirements, and dimensions. This part of ISO 8820 is applicable for fuse-links with a rated voltage of 32 V or 58 V, a current rating of 100 A, and a breaking capacity of 1 000 A
23、 intended for use in road vehicles. This part of ISO 8820 is intended to be used in conjunction with ISO 8820-1 and ISO 8820-2. The numbering of its clauses corresponds to that of ISO 8820-1, whose requirements are applicable, except where modified by requirements particular to this part of ISO 8820
24、. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any ame
25、ndments) applies. ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications ISO 8820-1, Road vehicles Fuse-links Part 1: Definitions and general test requirements 3 T erms a nd definiti ons For the purposes of this document, the term
26、s and definitions given in ISO 8820-1 apply. 4 Marking, labelling, and colour coding See ISO 8820-1 and Table 1. ISO 2015 All rights reserved 1BS ISO 8820-3:2015ISO 8820-3:2015(E) Table 1 Fuse-link colour coding Current rating Colour Type C, Type F Colour Type E A 1 black 2 grey 3 violet 4 pink 5 ta
27、n/light brown 7, 5 brown 10 red 15 blue 20 yellow yellow 25 white a grey or white a 30 green green 35 dark green dark green 40 orange orange 50 red 60 blue 70 brown 80 white aor grey 100 violet aFor transparent fuse bodies, “white” means no colour is added to the plastic material. Same colour is not
28、 allowed for 25 A and 80 A Type E. 5 Tests and requirements 5.1 General 5.1.1 Test criteria In addition to carrying out the test procedures in accordance with ISO 8820-1, the following criteria apply. Tests shall be performed following the test sequences in Table 2. The test fixtures for electrical
29、tests shall be designed in accordance with Figure 1. The connection resistance shall be 0,8 m for Type C (medium) and Type F (miniature) fuse-links and 0,35 m for Type E (high current) fuse-links to ensure the proper function of the test fixture. Fuse-links according to this part of ISO 8820 shall p
30、rovide for visible evidence of an open-fuse element.2 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E) 5.1.2 Test sequence Table 2 Test sequence No. Test (Sub)clause Sample groups 1 2 3 4 5 6 7 1 Dimensions Clause 6 X X X 2 Marking, labelling, and colour coding Clause 4 X X X X X X X
31、 3 Fuse-link voltage drop 5.2 X X X 4 Strength of terminals 5.8 X X X 5 Environmental conditions Climatic load 5.4 X 6 Chemical load X 7 Mechanical load X 8 Transient current cycling 5.3 X 9 Fuse-link voltage drop 5.2 X X X X 10 Current steps 5.6 X 11 Breaking capacity 5.7 X 12 Operating time rating
32、 test I Ror 1,10 I R a 5.5 X X X X X 1,35 I R a Y Y Y Y Y 1,60 I R Y Y Y Y Y 2,00 I R Y Y Y Y Y 3,50 I R Y Y Y Y Y 6,00 I R Y Y Y Y Y 13 Strength of terminals 5.8 X X X X X X X NOTE 1 Each sample group shall contain a minimum of 10 fuse-links for each rated current rating. NOTE 2 For the operating t
33、ime rating tests marked “Y”, the sample groups 2, 4, 5, 6, and 7 shall be divided equally. These fuse-links are intended to be subjected to a single operating time-rating test only. NOTE 3 A dash () indicates that the test is not required. aNot required for 100 A fuse-link. 5.2 Voltage drop 5.2.1 Te
34、sts The voltage drop, U AB , shall be measured at points A and B across the fuse-link tabs as shown in Figure 1. ISO 2015 All rights reserved 3BS ISO 8820-3:2015ISO 8820-3:2015(E) 1 2 3 4 5 Key 1 fuse-link 2 test fixture 3 fuse blade 4 test clip (cantilevered contact system, receptacle to accept tab
35、s as defined in Table 7) 5 cable (size according to Table 6) E (1,5 0,5) mm F (15,5 1) mm for miniature and medium fuse-links; (28,0 1) mm for high current fuse-links NOTE Points A and B are the measuring points for the voltage drop. Points A, C and B, D are the measuring points for connection resis
36、tance. Figure 1 Test schematic (Types C, E, and F) 5.2.2 Requirements See Table 3.4 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E) Table 3 Voltage drop Fuse rating A Max. voltage drop U ABmV 1 250 2 225 3 200 4 5 175 7, 5 150 10 140 15 125 20 25 30 120 35 40 50 60 70 110 80 100 5.3
37、 Transient current cycling 5.3.1 Test See Figure 2 and ISO 8820-1. At an elapsed time of 0,025 s on-time, the current shall fall to a value between 1,65 I Rand 2,5 I R . At no time during the first 4,5 s of each cycle shall the steady-state current fall below 0,9 I R . ISO 2015 All rights reserved 5
38、BS ISO 8820-3:2015ISO 8820-3:2015(E) Y a b I R I R I R Key X time (s) Y current a One cycle. b (5,6 6) I Rfor I R 5 A; (4,6 5) I Rfor I R 5 A. Figure 2 Transient current cycling 5.3.2 Requirements See ISO 8820-1. 5.4 Environmental conditions See ISO 8820-1. 5.5 Operating time-rating 5.5.1 Test See I
39、SO 8820-1. For I R , the test duration is 100 h. 5.5.2 Requirement See Table 4. After activation, the current through the fuse-link shall not exceed 0,5 mA at the rated voltage of the fuse-link.6 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E) Table 4 Operating times Test current A
40、Operating time s Type C, F Type E min. max. min. max. I R 360 000 1,1 I R 360 000 1,35 I R a 0,75 600 60 900 1,6 I R 0,25 50 10 200 2,0 I R 0,15 5 2 60 3,5 I R 0,04 0,5 0,2 7,0 6 I R 0,02 0,1 0,04 1,0 NOTE A dash () indicates that no value is specified. aNot required for 100 A high current fuse-link
41、s. 5.6 Current steps 5.6.1 Test See ISO 8820-1. 5.6.2 Requirement See ISO 8820-1. After activation, the current through the fuse-link shall not exceed 0,5 mA at the rated voltage of the fuse-link. 5.7 Breaking capacity 5.7.1 Test See ISO 8820-1. Test at 1 000 A with cable sizes as shown in Table 6.
42、Use an appropriate test dummy in accordance with Figures 3 to 5. ISO 2015 All rights reserved 7BS ISO 8820-3:2015ISO 8820-3:2015(E) Dimensions in millimetres Figure 3 Test dummy for Type C fuse-links Where not specified in Figure 3, the common tolerances shall be in accordance with tolerance class m
43、 as specified in ISO 2768-1. Dimensions in millimetres Figure 4 Test dummy for Type E fuse-links Where not specified in Figure 4, the common tolerances shall be in accordance with tolerance class m as specified in ISO 2768-1.8 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E) Dimensio
44、ns in millimetres Figure 5 Test dummy for Type F fuse-links Where not specified in Figure 5, the common tolerances shall be in accordance with tolerance class m as specified in ISO 2768-1. 5.7.2 Requirement See ISO 8820-1. After the test, the current through the fuse-link shall not exceed 0,5 mA at
45、the rated voltage of the fuse- link. 5.8 Strength of terminals Table 5 Terminal forces Fuse-link size F 1 F 2 F 3 N N N Type C 70 1 15 1 7,5 1 Type E 90 1 20 1 10 1 Type F 50 1 10 1 5 1 ISO 2015 All rights reserved 9BS ISO 8820-3:2015ISO 8820-3:2015(E) Note The arrows indicate the directions of appl
46、ied forces F 1 F 3 . Figure 6 Application of forces 5.8.1 Test A force (F 1 F 3 ) shall be applied to each of the tabs of the fuse-link in accordance with Figure 6. The force shall be held for 2 s. The test force shall not be applied abruptly. 5.8.2 Requirements The deformation of the test sample sh
47、all not exceed 0,5 mm. After the test, the insulator shall be intact and the terminals shall not be removed from the insulator. 5.9 Test cable sizes Test cable sizes shall be as given in Table 6. All tests for a particular fuse-link rating shall be performed using the same cable size. Test cable siz
48、es are specified to allow comparative fuse-link tests to be carried out. The cable size specified herein does not necessarily indicate the size of cable to be used in the vehicle application.10 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E) Table 6 Test cable sizes Rated current, Conductor cross-sectional area a Length I R mm 2 mm A Type F Type C Type E 1 0,35 0,35 2 3 4 5 0,5 0,5 7, 5 0,75 0,75 10 1,0 1,0 15 1,5 1,5 20 2,5 2,5 4,0 500 50 25 30 4,0 4,0 35 6,040 50 6,060 70 10,080 100 16,0 aConductor material according ISO 6722-1. 5.10 Temperature rise See Annex A
