1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 8820-8:2012 Road vehicles Fuse-links Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450 VBS ISO 8820-8:2012 BRITISH STANDARD National for
2、eword This British Standard is the UK implementation of ISO 8820-8:2012. The UK participation in its preparation was entrusted to Technical Committee AUE/16, Electrical and electronic equipment. A list of organizations represented on this committee can be obtained on request to its secretary. This p
3、ublication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012 ISBN 978 0 580 69471 4 ICS 43.040.10 Compliance with a British Standard cannot confer
4、immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012. Amendments issued since publication Date Text affectedBS ISO 8820-8:2012 ISO 2012 Road vehicles Fuse-links Part 8: Fuse-links with bolt-in contac
5、ts (Type H and J) with rated voltage of 450 V Vhicules routiers Liaisons fusibles Partie 8: Liaisons fusibles avec contacts boulonns (type H et J) tension nominale de 450 V INTERNATIONAL STANDARD ISO 8820-8 First edition 2012-08-01 Reference number ISO 8820-8:2012(E)BS ISO 8820-8:2012ISO 8820-8:2012
6、(E) ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 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 writ
7、ing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 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 8820-8:2012ISO 8820-8:2012(E) ISO 2
8、012 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Marking, labelling . 1 5 Tests and requirements 1 5.1 General . 1 5.2 Voltage drop 3 5.3 Transient current cycling . 4 5.4 Environmental conditions . 4 5.5 Operating time rating
9、4 5.6 Current steps 5 5.7 Breaking capacity . 5 5.8 Strength of terminals . 5 5.9 Temperature rise test 6 5.10 Resistance against temperature shock . 7 6 Dimensions . 7 6.1 Type H . 7 6.2 Type J . 8 7 T est fixtur e 9 7.1 Test fixture for fuse-links Type H and Type J 9 Anne x A (informative) Classif
10、ication .11 Bibliography .12BS ISO 8820-8:2012ISO 8820-8:2012(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 c
11、ommittees. 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 t
12、he International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Internat
13、ional Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be
14、 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8820-8 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment. ISO 8820 consists of the following parts, under the general
15、 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 (type A) and bolt-in contacts (type B) and their test
16、 fixtures Part 5: Fuse-links with axial terminals (Strip fuse-links) Types SF 30 and SF 51 and test fixtures Part 6 Single-bolt fuse-links Part 7: Fuse-links with tabs (Type G) with rated voltage of 450V Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450V Part 9: Fuse-
17、links with shortened tabs (Type K) The following part is under preparation: Part 10: Fuse-links with tabs Type L (high current miniature) iv ISO 2012 All rights reservedBS ISO 8820-8:2012INTERNATIONAL ST ANDARD ISO 8820-8:2012(E) Road vehicles Fuse-links Part 8: Fuse-links with bolt-in contacts (Typ
18、e H and J) with rated voltage of 450 V 1 Scope This part of ISO 8820 specifies fuse-links with bolt-in contacts (Type H and J) and test fixtures for the fuse-links for use in road vehicles. It establishes, for these fuse-link types, the rated current, test procedures, performance requirements and di
19、mensions. This part of ISO 8820 is applicable to fuse-links with a rated voltage of 450 V d.c., a current rating of 400 A and a breaking capacity of 2 000 A intended for use in road vehicles. This part of ISO 8820 is intended to be used in conjunction with ISO 8820-1 and with ISO 8820-2. The numberi
20、ng 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 references The following referenced documents are indispensable for the application of this document. For dated references, on
21、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 8820-1, Road vehicles Fuse-links Part 1: Definitions and general test requirements ISO 8820-2, Road vehicles Fuse-links Part 2: Users guide ISO 6722, Road vehic
22、les 60 V and 600 V single-core cables 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 8820-1 apply. 4 Marking, labelling The rated current, manufacturers name or trademark and “450 V d.c.” shall be permanently marked on the body of the fuse-link.
23、5 Tests and requirements 5.1 General In addition to carrying out the test procedures in accordance with ISO 8820-1, the following criteria apply. All tests shall be performed as specified in Table 1. The test fixtures for electrical tests shall be designed in accordance with Figure 4. The connection
24、 resistance shall be not higher than 0,35 m to ensure the proper function of the test fixture. As two or more fuse-links are tested in series, they shall be mounted not less than 150 mm apart. ISO 2012 All rights reserved 1BS ISO 8820-8:2012ISO 8820-8:2012(E) 5.1.1 Test sequence Table 1 Test sequenc
25、e No Test Clause Sample group a 1 2 3 4 5 6 7 1 Dimensions 6 X X X 2 Marking, labelling 4 X X X X X X X 3 Strength of terminals 5.8 X X X X X X X 4 Fuse-link voltage drop 5.2 X X 5 Environmental condition Climatic load 5.4 X Chemical loads X Mechanical load X 6 Transient current cycling 5.3 X 7 Temp
26、erature rise 5.9 X 8 Resistance against temperature shock 5.10 X 9 Breaking capacity 5.7 X 10 Fuse-link voltage drop 5.2 c X X X X X 11 Operating time-rating 1,1I R 5.5 X X X X X X 1,35I R Y b Y Y Y Y Y 1,5I R Y Y Y Y Y Y 2,0I R Y Y Y Y Y Y 3,0I R Y Y Y Y Y Y 5,0I R Y Y Y Y Y Y 12 Strength of termin
27、als 5.8 X X X X X X X aEach sample group shall contain a minimum of 10 fuse-links. bFor operating times, tests marked with “Y” in sample groups 2, 3, 4, 5, 6 and 7 shall be divided equally. These fuse-links are intended to be subjected to a single operating time test only. cFor sample groups marked
28、with “” tests are not required. 5.1.2 Test cable sizes Test cable sizes shall be as given in Table 2. All tests for a particular fuse-link rating shall be performed using the same cable size. Test cable sizes are specified to allow comparative fuse-link tests to be carried out. The cable size specif
29、ied does not necessarily indicate the size of cable to be used in the vehicle application. Only thick wall cables as specified in ISO 6722 shall be used for testing. 2 ISO 2012 All rights reservedBS ISO 8820-8:2012ISO 8820-8:2012(E) Table 2 Test cable sizes Rated current, I RA Conductor cross- secti
30、onal area amm 2 Cable length mm 10 2,0 500 50 15 20 3,0 30 5,0 40 50 60 100 20,0 125 150 40,0 aConductor material in accordance with ISO 6722. 5.2 Voltage drop 5.2.1 Test The voltage drop U abshall be measured at points a and b across the fuse-link tabs as shown in Figure 4 after carrying a current
31、equal to 100 % of rated current for 15 min. 5.2.2 Requirement See Table 3. Table 3 Fuse-link voltage drop Rated current, I RA M a x i m u m v o l t a g e d r o p, U abmV Type H Type J 10 350 15 200 20 350 30 200 40 50 60 250 100 125 200 150 180 not applicable ISO 2012 All rights reserved 3BS ISO 882
32、0-8:2012ISO 8820-8:2012(E) 5.3 Transient current cycling 5.3.1 Test See Figure 1 and ISO 8820-1. At an elapsed time of 0,25 s on-time, the current shall fall to a value between 1,25I Rand 1,35I R . During the first 10 s of each cycle, the steady-state current shall never fall below 0,5I R . Key t ti
33、me I current aOne cycle. Figure 1 Transient current cycling 5.3.2 Requirement The fuse-link shall meet the values given in appropriate Table 3 and 4. 5.4 Environmental conditions See ISO 8820-1. For chemical load tests, the samples shall not be immersed. A wipe test instead has to be agreed between
34、fuse manufacturer and vehicle manufacturer. 5.5 Operating time rating 5.5.1 Test Stabilize the test fixture and the fuse-links at room temperature prior to testing. After adjusting the power supply to the test current as specified in Table 4, apply this current to the fuse-links. Then measure the ti
35、me it takes the fuse-link to be activated. Especially when testing a large number of fuse- links, allow sufficient cooling time to prevent the test fixture from overheating. The rated voltage U Rshall be maintained during a period of at least 30 s after the fuse-link is activated. 4 ISO 2012 All rig
36、hts reservedBS ISO 8820-8:2012ISO 8820-8:2012(E) Table 4 Operating times Test current A Operating time s Fuse-links 60 A F u s e - l i n k s 6 0 A Type H1, H2, H3 and J3 Type J1 Type J2 and J4 min. ma x . min. ma x . min. ma x . 1,1I R 14 400 14 400 14 400 1,35I Ra 150 3 600 150 3 600 1,5I R 10 1 00
37、0 5 3 600 20 1 500 2,0I R 0,5 100 1 300 1 300 3,0I R 0,1 15 0,2 30 0,2 30 5,0I R 0,05 1,0 0,05 1,0 0,05 1,0 not applicable aFor H1 fuse-links and J3 fuse-links rated 10 A and 20 A, this test is not required. They are intended for device protection only.NOTE The values given here are the total time v
38、alues, including pre-arcing time and arcing time. 5.5.2 Requirement The fuse-links shall meet the values given in Table 4 and shall meet the requirements as given in ISO 8820-1. The fuse construction material shall stay inside within the body of the fuse-link. After activation, the current through t
39、he fuse-link shall not exceed 0,5 mA at the rated voltage of the fuse-link. 5.6 Current steps Not applicable. 5.7 Breaking capacity 5.7.1 Test A current of 2 000 A shall be applied to the fuse-links at a test voltage of 450 V d.c The test circuit shall be in accordance with ISO 8820-1. Test cable si
40、zes shall be in accordance with Table 2. 5.7.2 Requirement After the test, insulators shall not be damaged. After activation, 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 5.8.1 Test Install the fuse-links in the test fixtu
41、re (see Figure 4) with the mounting torque according to Table 5. This test is performed without cables and terminals. ISO 2012 All rights reserved 5BS ISO 8820-8:2012ISO 8820-8:2012(E) Table 5 Mounting torque and bolt sizes Fuse-link type Mounting torque Nm Bolt size H1, H2 2 0,5 M 4 H3 4,5 1 M 5 J1
42、, J2 6 1 M 6 J3, J4 12 1 M 8 For mounting in the vehicle, the specific procedure (greasing, surface materials, surface roughness, etc.) shall be agreed upon between the fuse manufacturer, the fuse-box manufacturer and the vehicle manufacturer. NOTE Test number 12 in Table 1 “Test sequence” is just a
43、 removal from the test fixture. 5.8.2 Requirement The fuse-links shall remain physically intact. 5.9 Temperature rise test 5.9.1 Test The temperature rise shall be measured at the temperature-rise measuring points a or b in the standard test fixture as shown in Figure 4 after supplying the test curr
44、ent as shown in Table 6 for 40 min. Table 6 Test current Rated current, I RA Test current A 10 7 15 10,5 20 14 30 21 40 24 50 30 60 100 50 125 62,5 150 75 5.9.2 Requirement The temperature rise shall not exceed 50 C. 6 ISO 2012 All rights reservedBS ISO 8820-8:2012ISO 8820-8:2012(E) 5.10 Resistance
45、against temperature shock 5.10.1 Test See ISO 8820-1. The fuse-links shall be subjected to 48 temperature shock cycles as follows (see Figure 2): (1) 20 min at a temperature of (40 2) C; (2) 15 s max. transition time; (3) 20 min at the temperature of (100 2) C; and (4) 15 s max. transition time. Aft
46、er completion of the test, the operating time-rating test shall be conducted according to 5.7. The above-described cycle (1) through (4) shall complete at 40 min. 5.10.2 Requirement The fuse-link shall meet the values given in appropriate Table 3 and 4. 6 Dimensions 6.1 Type H For the dimensions see
47、 Table 7. Figure 2 Type H ISO 2012 All rights reserved 7BS ISO 8820-8:2012ISO 8820-8:2012(E) Table 7 Fuse-link Type H dimensions Dimensions in millimetres Dimension H1 H2 H3 Value Tolerance Value Tolerance Value Tolerance a 31,8 0,8 38 0,8 38 0,8 b 45 0,5 51,2 0,5 53,5 0,5 c 55 0,8 61,2 0,8 65,5 0,8
48、 d 6,45 0,05 6,6 0,2 10,3 0,2 e 4,2 0,1 4,2 0,1 5,3 0,1 f 5 0,1 5 0,1 6 0,1 g 10 0,15 10 0,15 10,3 0,15 h 0,34 0,16 0,34 0,16 0,6 0,16 i 2,5 2,5 2,5 2,5 2 0,25 6.2 Type J For the dimensions see Table 8. Figure 3 Type J 8 ISO 2012 All rights reservedBS ISO 8820-8:2012ISO 8820-8:2012(E) Table 8 Fuse-link Type J dimensions Dimensions in millimetres Dimension J1 J2 J3 J4 Value Tolerance Value Tolerance Value Tolerance Value Tolerance a 34,4 0,8 41,5 1 41,3 0,7 54 0,7 b 54 1 60 0,5 60,45 0,65 72,65 0,75 c 67 1 73 0,5 81 0,7 92,1 0,7 d 20 1 20 0,5 20,6 0,5 25,4
