1、BSI Standards Publication BS ISO 8820-9:2014 Road vehicles Fuse-links Part 9: Fuse-links with shortened tabs (Type K)BS ISO 8820-9:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 8820-9:2014. The UK participation in its preparation was entrusted to Techn
2、ical Committee AUE/16, Electrical and electronic equipment. 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 necessary provisions of a contract. Users are responsible for its correct application. T
3、he British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 69472 1 ICS 43.040.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee
4、 on 31 May 2014. Amendments issued since publication Date Text affectedBS ISO 8820-9:2014 ISO 2014 Road vehicles Fuse-links Part 9: Fuse-links with shortened tabs (Type K) Vhicules routiers Liaisons fusibles Partie 9: Liaisons fusibles languettes raccourcies (Type K) INTERNATIONAL STANDARD ISO 8820-
5、9 First edition 2014-05-01 Reference number ISO 8820-9:2014(E)BS ISO 8820-9:2014ISO 8820-9:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or
6、by any means, electronic 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 Case postale 56 CH-1
7、211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 8820-9:2014ISO 8820-9:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Marking, labe
8、lling and colour coding . 1 5 Tests and requirements 2 5.1 General . 2 5.2 Voltage drop and connection resistance . 4 5.3 Transient current cycling . 6 5.4 Environmental conditions . 7 5.5 Operating time-rating . 7 5.6 Current steps 7 5.7 Breaking capacity . 7 5.8 Strength of terminals . 9 6 Dimensi
9、ons 10 6.1 Basic dimensions of fuse-link 10 6.2 Designation example .11 7 T est fixtur e .11 Bibliography .13BS ISO 8820-9:2014ISO 8820-9:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of
10、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,
11、 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. The procedures used to develop this document and those intended for its further maintenance are described in the ISO
12、/IEC Directives, Part 1. In particular 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 possibili
13、ty that some of the elements of this 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 pat
14、ent declarations received (see www.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 inf
15、ormation about ISOs adherence to 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 3, Electrical and electronic equipment. ISO 8820 consists
16、of the following parts, under the general title Road vehicles Fuse-links: Part 1: Definitions and general test requirements Part 2: Users guide Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature) Part 4: Fuse-links with female contacts ( Ty pe A) a
17、nd bolt-in contacts ( Ty pe B) and their test fixtures Part 5: Fuse links with axial terminals (Strip fuse-links) Ty pe SF 30 and SF 51 and test fixture Part 6 Single-bolt fuse-links Part 7: Fuse-links with tabs ( Ty pe G) with rated voltage of 450 V Part 8: Fuse-links with bolt-in contacts ( Ty pe
18、H and J) with rated voltage of 450 V Part 9: Fuse-links with shortened tabs (Type K)iv ISO 2014 All rights reservedBS ISO 8820-9:2014INTERNATIONAL ST ANDARD ISO 8820-9:2014(E) Road vehicles Fuse-links Part 9: Fuse-links with shortened tabs (Type K) 1 Scope This part of ISO 8820 specifies fuse-links
19、with shortened tabs (Type K) 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 to fuse-links with a rated voltage of 58 V, a current rating of 30 A, and a breaking cap
20、acity of 1 000 A 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 clauses in this part of ISO 8820 corresponds to that of ISO 8820-1.This part of ISO 8820 includes additional or modified requirements that
21、are intended to be applied in addition to those given in ISO 8820-1. 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 reference
22、s, the latest edition of the referenced document (including any amendments) applies. ISO 6722-1, Road vehicles 60 V and 600 V single-core cables Part 1: Dimensions, test methods and requirements for copper conductor cables ISO 8820-1, Road vehicles Fuse-links Part 1: Definitions and general test req
23、uirements 3 T erms an d definiti ons For the purposes of this document, the terms and definitions given in ISO 8820-1 apply. 4 Marking, labelling and colour coding Marking, labelling, and colour coding shall be in accordance with ISO 8820-1 and Table 1. ISO 2014 All rights reserved 1BS ISO 8820-9:20
24、14ISO 8820-9:2014(E) Table 1 Fuse-link colour coding Current rating A Colour 1 Black 2 Grey 3 Violet 4 Pink 5 Tan/Light brown 7, 5 Brown 10 Red 15 Blue 20 Yellow 25 White a 30 Green aFor transparent fuse bodies, “white” means no colour in the plastic material is added. 5 Tests and requirements 5.1 G
25、eneral In addition to carrying out the test procedures in accordance with ISO 8820-1, the following criteria shall apply. Tests shall be performed following the test sequences in Table 2; The test fixtures for electrical tests shall be designed in accordance with Figure 1; Fuse-links according to th
26、is part of ISO 8820 shall provide for visible evidence of an open fuse element.2 ISO 2014 All rights reservedBS ISO 8820-9:2014ISO 8820-9:2014(E) 5.1.1 Test sequence Table 2 Test sequence No Test Clause Sample groups a 1 2 3 4 5 6 7 1 Dimensions 6 X X X 2 Marking, labelling, and colour coding 4 X X
27、X X X X X 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 Chemical load X Mechanical load X 6 Transient current cycling 5.3 X 7 Fuse-link voltage drop 5.2 X X X X 8 Current steps 5.6 X 9 Breaking capacity 5.7 X 10 Operating time rat
28、ing test 1,1 I R 5.5 X X X X X 1,35 I R Y Y Y Y Y 1,6 I R Y Y Y Y Y 2 I R Y Y Y Y Y 3,5 I R Y Y Y Y Y 6 I R Y Y Y Y Y 11 Strength of terminals 5.8 X X X X X X X Y For these operating time tests, the sample groups 2, 4, 5, 6, and 7 shall be divided equally; these fuse-links are intended to be subject
29、ed to a single operating time test only. Not required. aEach sample group should contain a minimum of 10 fuse-links for each current rating. 5.1.2 Test cable sizes Test cable sizes shall be as given in Table 3. All tests for a particular fuse-link rating shall be performed using the same cable size.
30、 Test cable sizes 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. ISO 2014 All rights reserved 3BS ISO 8820-9:2014ISO 8820-9:2014(E) Table 3 Test cable sizes R
31、ated current I RA Conductor cross-sectional area amm 2 Length mm 1 0,35 500 50 2 3 4 5 0,5 7, 5 0,75 10 1,0 15 1,5 20 2,5 25 30 4,0 aConductor material according ISO 6722-1. 5.2 Voltage drop and connection resistance 5.2.1 Test The voltage drop U ABshall be measured at points A and B across the fuse
32、-link tabs as shown in Figure 1. The connection resistance shall be measured at the points A, C and B, D.4 ISO 2014 All rights reservedBS ISO 8820-9:2014ISO 8820-9:2014(E) Key 1 fuse-link 2 test fixture 3 fuse blade 4 test clip (as defined in Table 9) 5 cable size according to Table 3 NOTE 1 Points
33、A and B are the measuring points for the voltage drop. NOTE 2 Points A, C and B, D are the measuring points for connection resistance. Figure 1 Test schematic (type K) 5.2.2 Requirements The requirements shall be in accordance with Table 4. ISO 2014 All rights reserved 5BS ISO 8820-9:2014ISO 8820-9:
34、2014(E) Table 4 Voltage drop and connection resistance Fuse rating A Ma x . vol t a g e dro p U ABmV Ma x . c on n e c t ion resist an ce m 1 250 0,8 2 225 3 200 4 5 175 7, 5 150 10 140 15 125 20 25 30 120 5.3 Transient current cycling 5.3.1 Test The test shall be in accordance with Figure 2 and ISO
35、 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, the steady-state current shall fall below 0,9 I R . Key X time(s) Y current(I R ) a One cycle. b (5,6 6) I Rfor I R 5A and (4,6 5) I Rfor I
36、 R 5A. Figure 2 Transient current cycling 5.3.2 Requirement The requirement shall be in accordance with ISO 8820-1.6 ISO 2014 All rights reservedBS ISO 8820-9:2014ISO 8820-9:2014(E) 5.4 Environmental conditions The environmental conditions shall be in accordance with ISO 8820-1. 5.5 Operating time-r
37、ating 5.5.1 Test The test shall be in accordance with ISO 8820-1. For 1,1 I R , the test duration is 100 h. 5.5.2 Requirements The requirements shall be in accordance with Table 5. After activation, the current, through the fuse-link, shall not exceed 0,5 mA at the rated voltage of the fuse-link. Ta
38、ble 5 Operating times Test current A Operating time s min. max. 1,1 I R 360 000 1,35 I R a 0,75 600 1,6 I R a 0,25 50 2 I R 0,15 5 3,5 I R 0,04 0,5 6 I R 0,02 0,1 5.6 Current steps 5.6.1 Test The test shall be in accordance with ISO 8820-1. 5.6.2 Requirement The requirement shall be in accordance wi
39、th 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 The test shall be in accordance with ISO 8820-1. Test at 1 000 A with cable sizes as shown in Tables 3. Use appropriate test dummy acc
40、ording to Figure 3. ISO 2014 All rights reserved 7BS ISO 8820-9:2014ISO 8820-9:2014(E) 5.7.1.1 Test dummy Figure 3 Test dummy for Type K fuse-links Table 6 Dimensions of Test dummy for Type K fuse-links Dimension Test dummy for Type K fuse-links Value mm Tolerance mm l 1 (10,9) - l 2 8,6 0,05 l 3 2,
41、3 +0/0,05 l 4 1,4 0,3 b 1 0,8 0,02 b 2 0,5 0,1 d 1 3,0 0,15 h 1 16,2 0,15 h 2 6,2 0,15 h 3 0,7 0,15 h 4 0,56 max h 5 3,0 0,15 r 1 0,5 0,15 r 2 1,5 0,15 5.7.2 Requirements The requirements shall be in accordance with ISO 8820-1.8 ISO 2014 All rights reservedBS ISO 8820-9:2014ISO 8820-9:2014(E) After
42、the test, the current, through the fuse-link, shall not exceed 0,5 mA at the rated voltage of the fuse- link. 5.8 Strength of terminals Table 7 Terminal forces Fuse-link size F 1N F 2N F 3N Type K 50 1 10 1 5 1 NOTE The arrows indicate the directions of applied forces F 1 F 3 . Figure 4 Application
43、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 Table 7 and Figure 4. 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 shall not exceed 0,5 mm. After the
44、test, the insulator shall be intact and the terminals shall not be removed from the insulator. ISO 2014 All rights reserved 9BS ISO 8820-9:2014ISO 8820-9:2014(E) 6 Dimensions 6.1 Basic dimensions of fuse-link Dimensions in millimetres Figure 5 Fuse-links Type K10 ISO 2014 All rights reservedBS ISO 8
45、820-9:2014ISO 8820-9:2014(E) Table 8 Dimensions of fuse-links Type K Dimension Type K Value mm Tolerance mm l 1 10,9 0,15 l 2 10,53 0,68 l 3 6,45 0,16 l 4 0,42 0,19 b 1 3,81 0,16 b 2 3,6 0,20 b 3 0,83 0,04 b 4 0,72 max. b 5 2,2 0,2 h 1 8,72 0,47 h 2 5,95 0,5 h 3 0,7 0,3 h 4 1,0 0,15 6.2 Designation
46、e x ample Designation of a fuse-link Type K in accordance with this part of ISO 8820 for a nominal current of 15 A:Fuse-link ISO 8820 K 15 7 T est fixt ur e See Figure 1 for electrical measurements. ISO 2014 All rights reserved 11BS ISO 8820-9:2014ISO 8820-9:2014(E) Key a Voltage drop measurement ho
47、le. Fig u r e 6 Te s t f i x t ure T able 9 Pa r t s list a nd m at er i a l s p e c i f ic at ion s Reference No. in Figure 6 Description M at e r i a l s p e c i f ic a t io n s , f i n i sh a n d coa t ing Quantity 1 Test fixture insulating body Thermoset plastic 2 2 Terminal Copper alloy, gal. S
48、n 2 3 Cross recessed head screw: ISO 7045M2x108 Steel, gal. Zn 2 4 Nut: ISO 4032M28 Steel, gal. Zn 2 5 Hexagon socket set screw: ISO 4026M2.5x445H Steel, gal. Zn 412 ISO 2014 All rights reservedBS ISO 8820-9:2014ISO 8820-9:2014(E) Bibliography 1 ISO 8820-2, Road vehicles Fuse-links Part 2: User guidelines ISO 2014 All rights reserved 13BS ISO 8820-9:2014ISO 8820-9:2014(E) ISO 2014 All rights reserved IC S 43.040.10 Price based on 13 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-
