1、BRITISH STANDARD BS ISO 8820-6:2007 Road vehicles Fuse-links Part 6: Single-bolt fuse-links ICS 43.040.10 BS ISO 8820-6:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2007 ISBN 978 0 580 50653 6 National foreword This Br
2、itish Standard was published by BSI. It is the UK implementation of ISO 8820-6:2007. 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 secre
3、tary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments Reference num
4、ber ISO 8820-6:2007(E)INTERNATIONAL STANDARD ISO 8820-6 First edition 2007-03-01 Road vehicles Fuse-links Part 6: Single-bolt fuse-links Vhicules routiers Liaisons fusibles Partie 6: Liaisons fusibles poste singulier BS ISO 8820-6:2007 ii iii Contents Page Foreword iv 1 Scope . 1 2 Normative referen
5、ces . 1 3 Terms and definitions. 1 4 Marking and labelling . 2 5 Tests and requirements . 2 5.1 General. 2 5.1.1 General test conditions 2 5.1.2 Test sequence . 3 5.1.3 Test cable sizes. 3 5.2 Voltage drop 4 5.2.1 Tests. 4 5.2.2 Requirements 4 5.3 Transient current cycling. 4 5.3.1 Test. 4 5.4 Envir
6、onmental conditions 5 5.5 Operating time rating 5 5.5.1 Test. 5 5.5.2 Requirement 5 5.6 Current steps. 6 5.6.1 Test. 6 5.6.2 Requirement 6 5.7 Breaking capacity . 6 5.7.1 Test. 6 5.7.2 Requirement 6 5.8 Strength of terminals 6 5.9 Strength of insulating body of the fuse-link and insulating nut 6 5.9
7、.1 Purpose 6 5.9.2 Test. 6 5.9.3 Requirement 7 6 Dimensions 7 6.1 Single-bolt fuse-link 7 6.2 Mounting example 8 7 Test fixture. 8 BS ISO 8820-6:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo
8、rk of 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-governm
9、ental, 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
10、main task of technical committees is to prepare International Standards. Draft International 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.
11、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 identifying any or all such patent rights. ISO 8820-6 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrica
12、l and electronic equipment. ISO 8820 consists 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) Part 4: Fuse-links with female contacts (type A) and bolt-in contact
13、s (type B) and their test 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 450 V BS ISO 8820-6:2007 1 Road vehicles Fuse-links Part 6: Single-bolt fus
14、e-links 1 Scope This part of ISO 8820 specifies single-bolt fuse-links in road vehicles. It establishes, for this fuse-link type, 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 rat
15、ing of u 300 A and a breaking capacity of 2 000 A intended for use in road vehicles at a nominal voltage of 12 V, 24 V and/or 42 V. This part of ISO 8820 is intended to be used in conjunction with ISO 8820-1 and with ISO 8820-2. The numbering of its clauses corresponds to that of ISO 8820-1, whose r
16、equirements 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, only the edition cited applies. For undated references, the l
17、atest edition of the referenced document (including any amendments) applies. ISO 4017, Hexagon head screws Product grades A and B 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 vehicles 60
18、 V and 600 V single-core cables Dimensions, test methods and requirements 3 Terms and definitions For the purposes of this Part of ISO 8820, the terms and definitions given in ISO 8820-1 and the following apply. 3.1 insulating nut electrically insulated device used to assemble a single-bolt fuse BS
19、ISO 8820-6:20072 4 Marking and labelling The requirements given in ISO 8820-1 and Table 1 of this part of ISO 8820 apply. Table 1 Fuse-link colour coding Fuse-link rating A Colour 50 red 75 brown 100 yellow 125 green 150 orange 175 white 200 blue 250 pink 300 grey 5 Tests and requirements 5.1 Genera
20、l 5.1.1 General test conditions 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 4. T
21、he connection resistance shall be 0,35 m max. to ensure the proper function of the test fixture. Terminals shall have a suitable finish which will assure corrosion protection, and shall have satisfactory mechanical and electrical properties. The mounting torque shall be (12 1) Nm. The insulation res
22、istance of the insulating nut measured with 100 V d.c. shall be 10 M . BS ISO 8820-6:2007 3 5.1.2 Test sequence Table 2 Test sequences Sample groups aNo. Requirement/Test Clause 1 2 3 4 5 6 7 1 Dimensions 6 X X X 2 Marking and labelling 4 X X X X X X X 3 Strength of insulating body 5.9 X X X X X X X
23、 4 Voltage drop 5.2 X X X 5 Accelerated ageing 5.4 X 6 Fluid compatibility 5.4 X 7 Mechanical load 5.4 X 8 Transient current cycling 5.3 X 9 Voltage drop 5.2 X X X X 10 Current steps 5.6 X 11 Breaking capacity 5.7 X 1,00 I RX X X X X 1,35 I RY bY Y Y Y 1,50 I RY Y Y Y Y 2,00 I RY Y Y Y Y 3,50 I RY Y
24、 Y Y Y 12 Operating time rating 6,00 I R5.5 Y Y Y Y Y 13 Strength of insulating body 5.9 X X X X X X X aEach sample group shall contain a minimum of 10 fuse links. bFor these operating time tests noted with a Y, the sample groups 2, 4, 5, 6 and 7 for each current rating shall be divided equally. The
25、se fuses are intended to be subjected to a single operating time test only. 5.1.3 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. Test cable sizes are specified to allow comparative fuse-link te
26、sts to be carried out. The cable size specified does not necessarily indicate the size of cable to be used in the vehicle application. BS ISO 8820-6:20074 Table 3 Test cable sizes Fuse-link rating A Conductor cross-sectional area amm 250 75 10 100 125 16 150 175 25 200 35 250 50 300 70 a Conductor m
27、aterial according to ISO 6722.5.2 Voltage drop 5.2.1 Tests The test given in ISO 8820-1 and Figure 3 of this part of ISO 8820 shall apply. 5.2.2 Requirements The requirements given in Table 4 shall apply. Table 4 Voltage drop Fuse-link rating A Max. fuse-link voltage drop mV 50 110 75 105 100 100 12
28、5 95 150 90 175 85 200 80 250 75 300 70 5.3 Transient current cycling 5.3.1 Test Figure 1 and the test given in ISO 8820-1 shall apply. This test shall be performed at an environmental temperature of (90 5) C. At an elapsed time of 0,25 s on-time, the current shall fall to a value between 1,25 I Ran
29、d 1,35 I R . At no time shall the steady state current fall below 0,50 I R . BS ISO 8820-6:2007 5Key I current in A t time in s aone cycle b4 I RFigure 1 Transient current cycling 5.3.2 Requirement The requirements given in ISO 8820-1 shall apply. 5.4 Environmental conditions The tests and requireme
30、nts given in ISO 8820-1 shall apply. 5.5 Operating time rating 5.5.1 Test The test given in ISO 8820-1 shall apply. 5.5.2 Requirement The requirements given in Table 5 shall apply. After activation, the current through the fuse-link shall not exceed 0,5 mA at the rated voltage of the fuse-link. BS I
31、SO 8820-6:20076 Table 5 Operating times Operating time s Test current A min. max. 1,0 I R360 000 1,35 I R5 1 800 1,5 I R1 600 2,0 I R0,2 60 3,5 I R0,03 1,0 6,0 I R0,01 0,2 5.6 Current steps 5.6.1 Test The test given in ISO 8820-1 shall apply. 5.6.2 Requirement The requirement given in ISO 8820-1 sha
32、ll apply. 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 given in ISO 8820-1 shall apply. Test at 2 000 A with cable sizes as shown in Table 3. 5.7.2 Requirement The requirement given in ISO
33、 8820-1 shall apply After activation, the current through the rated voltage of the fuse-link shall not exceed 0,5 mA at U R= 58 V. 5.8 Strength of terminals Not applicable. 5.9 Strength of insulating body of the fuse-link and insulating nut 5.9.1 Purpose The purpose for this test given in ISO 8820-1
34、 shall apply. 5.9.2 Test Install the fuse-links in the test fixture with the mounting torque of (12 1) Nm. NOTE Test number 13 in Table 2 “test sequence” is just a removal from the test fixture. BS ISO 8820-6:2007 7 5.9.3 Requirement Fuse-links and insulating nuts shall remain physically intact. 6 D
35、imensions 6.1 Single-bolt fuse-link Dimensions in millimetres Figure 2 Single-bolt fuse-link BS ISO 8820-6:20078 6.2 Mounting example Dimensions in millimetres Key 1, 2 measuring points for voltage drop 3 insulating nut 4 bolt Figure 3 Mounting example 7 Test fixture Table 6 Parts list and material
36、specifications Reference No. in Figure 4 Description Dimensions see figure Material specifications, finish and coating Quantity 1 Test fixture insulating body 2 Thermoset plastic 1 2 Bolt: ISO 4017-M8 50-8.8 Steel, gal. Zn 1 3 Washer: DIN 125-A8,4 Steel, gal. Zn 1 4 Nut: ISO 40323-M8-8 Steel, gal. Z
37、n 2 BS ISO 8820-6:2007 9 Dimensions in millimetres Tolerances: ISO 2768 Key 1, 2, 3, 4 see Table 6 Figure 4 Test fixture BS ISO 8820-6:200710 Dimensions in millimetres Tolerances: ISO 2768 Key SW width across flats aOptionally dove-tailing. All corners and edges shall be rounded R1. Figure 5 Test fi
38、xture insulating body BS ISO 8820-6:2007 blankBS ISO 8820-6:2007 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level.
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