1、BSI Standards PublicationBS ISO 8820-3:2015Road vehicles Fuse-linksPart 3: Fuse-links with tabs (blade type)Type C (medium), Type E (high current) andType F (miniature)BS ISO 8820-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 8820-3:2015. Itsupersedes
2、BS ISO 8820-3:2010 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Data Communication (Road Vehicles).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include a
3、ll the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 76938 2ICS 43.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British St
4、andard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 8820-3:2015 ISO 2015Road vehicles Fuse-links Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E
5、(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 STANDARDISO8820-3Fourth edition2015-09-15Reference numberISO 8820-3:2015(E)BS ISO 8820-3:2015ISO 8820-3:2
6、015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll 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 p
7、osting 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 officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41
8、 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 8820-3:2015ISO 8820-3:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Marking, labelling, and colour coding 15 Tests and requirements 25.1 General . 25.1.1 Test criteria . 25.1.2 Test sequence 35.2 Voltage drop 35.2.1 T
9、ests 35.2.2 Requirements . 45.3 Transient current cycling . 55.3.1 Test . 55.3.2 Requirements . 65.4 Environmental conditions . 65.5 Operating time-rating . 65.5.1 Test . 65.5.2 Requirement 65.6 Current steps 75.6.1 Test . 75.6.2 Requirement 75.7 Breaking capacity . 75.7.1 Test . 75.7.2 Requirement
10、95.8 Strength of terminals . 95.8.1 Test 105.8.2 Requirements 105.9 Test cable sizes . 105.10 Temperature rise 116 Dimensions 126.1 Fuse-links Types C, E, and F 126.2 Designation example . 15Annex A (informative) Temperature rise test .16Bibliography .17 ISO 2015 All rights reserved iiiContents Page
11、BS ISO 8820-3:2015ISO 8820-3:2015(E)ForewordISO (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 in
12、terested 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 Electrotechni
13、cal 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 particular the different approval criteria needed for the different types of ISO doc
14、uments 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 respons
15、ible 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 f
16、or 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 the WTO principles in the Technical Barriers to Trade (TBT) see the following UR
17、L: Foreword - Supplementary informationThe 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 cancels and replaces the third edition (ISO 8820-3:2010), which has been technically
18、 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) Type C (medium), Type E (high current) and Type F (miniature) Part 4: Fuse-links wi
19、th 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-links with tabs (Type G) with rated voltage of 450 V Part 8: Fuse-links with bolt-in
20、 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 8820-3:2015INTERNATIONAL STANDARD ISO 8820-3:2015(E)Road vehicles Fuse-links Part 3: Fuse-links with
21、 tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)1 ScopeThis part of ISO 8820 specifies fuse-links with tabs (blade-type) Type C (medium), Type E (high current), and Type F (miniature) for use in road vehicles. It establishes, for these fuse-link types, the rated curre
22、nt, 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 intended for use in road vehicles.This part of ISO 8820 is intended to be used in conju
23、nction 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 8820.2 Normative referencesThe following documents, in whole or in part, are normatively refe
24、renced 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 amendments) applies.ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular d
25、imensions without individual tolerance indicationsISO 8820-1, Road vehicles Fuse-links Part 1: Definitions and general test requirements3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 8820-1 apply.4 Marking, labelling, and colour codingSee ISO 8820-1
26、and Table 1. ISO 2015 All rights reserved 1BS ISO 8820-3:2015ISO 8820-3:2015(E)Table 1 Fuse-link colour codingCurrent ratingColour Type C, Type FColour Type EA1 black 2 grey 3 violet 4 pink 5 tan/light brown 7, 5 brown 10 red 15 blue 20 yellow yellow25 whiteagrey or whitea30 green green35 dark green
27、 dark green40 orange orange50 red60 blue70 brown80 whiteaor grey100 violetaFor transparent fuse bodies, “white” means no colour is added to the plastic material. Same colour is not allowed for 25 A and 80 A Type E.5 Tests and requirements5.1 General5.1.1 Test criteriaIn addition to carrying out the
28、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 tests shall be designed in accordance with Figure 1. The connection resistance shall be 0,8 m for Type C (medium) and Type F (
29、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 provide 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 Tes
30、t sequenceTable 2 Test sequenceNo. Test (Sub)clauseSample groups1 2 3 4 5 6 71 Dimensions Clause 6 X X X 2 Marking, labelling, and colour coding Clause 4 X X X X X X X3 Fuse-link voltage drop 5.2 X X X 4 Strength of terminals 5.8 X X X 5Environmental conditionsClimatic load5.4 X 6 Chemical load X 7
31、Mechanical load X 8 Transient current cycling 5.3 X9 Fuse-link voltage drop 5.2 X X X X10 Current steps 5.6 X 11 Breaking capacity 5.7 X 12Operating timerating testIRor 1,10 IRa5.5 X X X X X1,35 IRa Y Y Y Y Y1,60 IR Y Y Y Y Y2,00 IR Y Y Y Y Y3,50 IR Y Y Y Y Y6,00 IR Y Y Y Y Y13 Strength of terminals
32、 5.8 X X X X X X XNOTE 1 Each sample group shall contain a minimum of 10 fuse-links for each rated current rating.NOTE 2 For the operating time 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 t
33、ime-rating test only.NOTE 3 A dash () indicates that the test is not required.aNot required for 100 A fuse-link.5.2 Voltage drop5.2.1 TestsThe voltage drop, UAB, 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 88
34、20-3:2015(E)12345Key1 fuse-link2 test fixture3 fuse blade4 test clip (cantilevered contact system, receptacle to accept tabs as defined in Table 7)5 cable (size according to Table 6)E (1,5 0,5) mmF (15,5 1) mm for miniature and medium fuse-links; (28,0 1) mm for high current fuse-linksNOTE Points A
35、and B are the measuring points for the voltage drop. Points A, C and B, D are the measuring points for connection resistance.Figure 1 Test schematic (Types C, E, and F)5.2.2 RequirementsSee Table 3.4 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E)Table 3 Voltage dropFuse rating AMax
36、. voltage drop UABmV1 2502 225320045 1757, 5 15010 140151252025301203540506070110801005.3 Transient current cycling5.3.1 TestSee 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 IRand 2,5 IR. At no time during the first 4,5 s of each cycl
37、e shall the steady-state current fall below 0,9 IR. ISO 2015 All rights reserved 5BS ISO 8820-3:2015ISO 8820-3:2015(E)YabIRIRIRKeyX time (s)Y currentaOne cycle.b(5,6 6) IRfor IR 5 A; (4,6 5) IRfor IR 5 A.Figure 2 Transient current cycling5.3.2 RequirementsSee ISO 8820-1.5.4 Environmental conditionsS
38、ee ISO 8820-1.5.5 Operating time-rating5.5.1 TestSee ISO 8820-1. For IR, the test duration is 100 h.5.5.2 RequirementSee 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-
39、3:2015(E)Table 4 Operating timesTest current AOperating timesType C, F Type Emin. max. min. max.IR 360 000 1,1 IR360 000 1,35 IRa0,75 600 60 9001,6 IR0,25 50 10 2002,0 IR0,15 5 2 603,5 IR0,04 0,5 0,2 7,06 IR0,02 0,1 0,04 1,0NOTE A dash () indicates that no value is specified.aNot required for 100 A
40、high current fuse-links.5.6 Current steps5.6.1 TestSee ISO 8820-1.5.6.2 RequirementSee 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 capacity5.7.1 TestSee ISO 8820-1.Test at 1 000 A with cable sizes as shown
41、 in Table 6.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 millimetresFigure 3 Test dummy for Type C fuse-linksWhere not specified in Figure 3, the common tolerances shall be in accordance with toleranc
42、e class m as specified in ISO 2768-1.Dimensions in millimetresFigure 4 Test dummy for Type E fuse-linksWhere 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)Dim
43、ensions in millimetresFigure 5 Test dummy for Type F fuse-linksWhere 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 RequirementSee ISO 8820-1.After the test, the current through the fuse-link shall not exceed 0,5 mA at
44、the rated voltage of the fuse-link.5.8 Strength of terminalsTable 5 Terminal forcesFuse-link sizeF1F2F3N N NType C 70 1 15 1 7,5 1Type E 90 1 20 1 10 1Type 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 applied forces F1 F
45、3.Figure 6 Application of forces5.8.1 TestA force (F1 F3) 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 RequirementsThe deformation of the test sample shall not exceed 0,5 mm. Aft
46、er the test, the insulator shall be intact and the terminals shall not be removed from the insulator.5.9 Test cable sizesTest 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 sizes are specified to allow com
47、parative 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 sizesRated current, Conductor cross-sectional areaaL
48、engthIRmm2mmA Type F Type C Type E 10,35 0,352 3 4 5 0,5 0,5 7, 5 0,75 0,75 10 1,0 1,0 15 1,5 1,5 202,5 2,54,0500 5025 30 4,0 4,0 356,040 506,060 7010,080 100 16,0 aConductor material according ISO 6722-1.5.10 Temperature riseSee Annex A. ISO 2015 All rights reserved 11BS ISO 8820-3:2015ISO 8820-3:2
49、015(E)6 Dimensions6.1 Fuse-links Types C, E, and FDimensions in millimetresYXXYKeyt1, t2, t3taperFigure 7 Fuse-link Type C (medium)12 ISO 2015 All rights reservedBS ISO 8820-3:2015ISO 8820-3:2015(E)Dimensions in millimetresXabcXKeyt2, t3taperaDetail of X.bWithin the outline of the fuse-link housing, the tabs shall
