1、May 2011 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 43
2、.040.10!$o$R“1760147www.din.deDDIN ISO 8820-7Road vehicles Fuse-links Part 7: Fuse-links with tabs (Type G) with rated voltage of 450 V(ISO 8820-7:2007)English translation of DIN ISO 8820-7:2011-05Straenfahrzeuge Sicherungseinstze Teil 7: Sicherungseinstze mit Flachsteckern (Form G) fr eine Nennspan
3、nung von 450 V(ISO 8820-7:2007)Englische bersetzung von DIN ISO 8820-7:2011-05Vhicules routiers Liaisons fusibles Partie 7: Fusibles avec languettes (de type G) avec une tension nominale de 450 V(ISO 8820-7:2007)Traduction anglaise de DIN ISO 8820-7:2011-05www.beuth.deDocument comprises pagesIn case
4、 of doubt, the German-language original shall be considered authoritative.1704.11 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Bibliography.3 1 Scope 4 2 Normative references 4 3 Terms and definitions4 4 Marking, labelling and colour codin
5、g 5 5 Tests and requirements 5 5.1 General5 5.2 Voltage drop .7 5.3 Transient current cycling8 5.4 Environmental conditions.8 5.5 Operating time rating.8 5.6 Current steps9 5.7 Breaking capacity 9 5.8 Terminal strength.9 6 Dimensions and designation examples 10 6.1 Types.10 6.2 Fuse-links with IR 35
6、 A .11 6.3 Fuse-links with IR 35 A .12 6.4 Designation example.12 7 Test fixture13 7.1 Test fixture for fuse-links with IR 35 A13 7.2 Test fixture for fuse-links with IR 35 A15 Bibliography 17 2 DIN ISO 8820-7:2011-05 National foreword This standard has been prepared by Technical Committee ISO/TC 22
7、 “Road vehicles”, (Secretariat: AFNOR, France), Subcommittee SC 3 “Electrical and electronic equipment” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Automobiltechnik (Road Vehicle Engineering Standards Committee), Working Group NA 052-0
8、1-03-05 AK Sicherungen. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. DIN ISO 8820 consists of the following parts, under the general title Road ve
9、hicles 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 contacts (type B) and their test fixtures Part 5: Fuse-links with axial terminals (Strip fuse-links) Types S
10、F 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 The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 8092-1 DIN ISO 8092-1 ISO 4017 DIN EN ISO 4017 National An
11、nex NA (informative) Bibliography DIN EN ISO 8092-1, Road vehicles Connections for on-board electrical wiring harnesses Part 1: Tabs for single-pole connections Dimensions and specific requirements DIN EN ISO 4017, Hexagon head screws Product grades A and B 3 DIN ISO 8820-7:2011-05 1 Scope This part
12、 of ISO 8820 specifies fuse-links with tabs (Type G) in road vehicles. This type of fuse-link is basically designed for use in fuel-cell applications. This part of ISO 8820 establishes, for this fuse-link type, the rated current, test procedures, performance requirements and dimensions. This part of
13、 ISO 8820 is applicable for fuse-links with a rated voltage of 450 V, a current rating of u 70 A and a breaking capacity of 2 000 A intended for use in road vehicles at a nominal voltage up to 450 V. This part of ISO 8820 is intended to be used in conjunction with ISO 8820-1:1)and ISO 8820-2. The nu
14、mbering of its clauses corresponds to that of ISO 8820-1:1), the requirements of which 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
15、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6722, Road vehicles 60 V and 600 V single-core cables Dimensions, test methods and requirements ISO 8092-1, Road vehicles Connections for on-boar
16、d electrical wiring harnesses Part 1: Tabs for single-pole connections Dimensions and specific requirements ISO 8820-1:1), Road vehicles Fuse-links Part 1: Definitions and general test requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 8820
17、-1:1)apply. 1) To be published. (Revision of ISO 8820-1:2002) Road vehicles Fuse-links Part 7: Fuse-links with tabs (Type G) with rated voltage of 450 V 4 DIN ISO 8820-7:2011-05 4 Marking, labelling and colour coding The requirements given in ISO 8820-1:1)and in Table 1 of this part of ISO 8820 appl
18、y. Table 1 Fuse-link colour coding Fuse-link rating A Colour 10 red 15 blue 20 yellow 25 white (natural) 30 green 35 dark green 40 orange 50 red 60 blue 70 brown 5 Tests and requirements 5.1 General In addition to carrying out the test procedures in accordance with ISO 8820-1:1), the following crite
19、ria apply. Tests shall be performed following the test sequence in Table 2. The test fixtures for electrical tests shall be designed in accordance with Figures 3 and 4. The connection resistance shall be u 1,0 m to ensure the proper function of the test fixture. As two or more fuse-links are tested
20、in series, they shall be mounted not less than 150 mm apart. 5 DIN ISO 8820-7:2011-05 5.1.1 Test sequence Table 2 Test sequence Sample group No. Test Clause 1 2 3 4 5 6 1 Dimensions 6 X X X 2 Marking, labelling and colour coding 4 X X X X X X 3 Fuse-link voltage drop 5.2 X X X 4 Strength of terminal
21、s 5.6 X X X 5 Accelerated ageing X 6 Fluid compatibility X 7 Vibration 5.4 X 8 Transient current cycling 5.3 X 9 Fuse-link voltage drop 5.2 X X X X 2IRY Y Y Y Y 300 A Y Y Y Y Y 10 Operating time rating 2 000 A a5.5 Y Y Y Y Y 11 Strength of terminals 5.8 X X X X X X aThis current is used to test the
22、breaking capacity (see 5.5 and 5.7). Y For these operating time tests, the sample groups 2, 3, 4, 5 and 6 shall be divided equally. These fuses are intended to be subjected to a single operating time test only. 5.1.2 Test cable sizes Test cable sizes shall be as given in Table 3. All tests for a par
23、ticular 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 specified does not necessarily indicate the size of cable to be used in the vehicle application. Only thick-wall cables as spec
24、ified in ISO 6722 shall be used for testing. 6 DIN ISO 8820-7:2011-05 Table 3 Test cable sizes Fuse-link rating Conductor cross-sectional area aA mm210 1,0 15 1,5 20 25 2,5 30 35 4 40 50 10 60 10 70 16 aConductor material according to ISO 6722. 5.2 Voltage drop 5.2.1 Test The fuse-link voltage drop
25、Uabshall be measured at points a and b across the fuse-link tabs, as shown in Figure 5, or Uaband Ucdshall be measured at points a, b and c, d across the fuse-link tabs, as shown in Figure 7. 5.2.2 Requirements Table 4 gives the voltage drop requirements. Table 4 Fuse-link voltage drop Fuse-link rat
26、ing A Voltage drop V 1 2,000 5 0,400 10 0,200 15 0,190 20 0,175 25 0,140 35 0,114 50 0,080 70 0,080 7 DIN ISO 8820-7:2011-05 5.3 Transient current cycling 5.3.1 Test See Figure 1 and ISO 8820-1. At an elapsed time of 0,025 s on-time, the current shall fall to a value between 1,65IRand 2,5IR. At no t
27、ime shall the steady-state current fall below 0,9IR. Key I current IR t time s aOne cycle. b(5,6 6)IRfor IR 5 A; (4,6 5)IRfor IRu 5 A. Figure 1 Transient current cycling 5.3.2 Requirement The requirements given in ISO 8820-1 apply. 5.4 Environmental conditions The tests and requirements given in ISO
28、 8820-1:1)apply. 5.5 Operating time rating 5.5.1 Test The tests given in ISO 8820-1:1)apply. The rated voltage URshall be maintained for a period of at least 30 s after the fuse-link is activated. For breaking capacity, the time constant shall be 7,5 . 10 ms. 8 DIN ISO 8820-7:2011-05 5.5.2 Requireme
29、nt The requirements given in ISO 8820-1 apply. The voltage during operation of the fuse-link shall not exceed 2 000 V. See Tables 5 and 6. After activation, the current through the fuse-link shall not exceed 5 mA at the rated voltage of the fuse-link. Table 5 Operating time rating for fuse-links wit
30、h IR 35 A Operating time s Test current min. max.2IR20 200 300 A 0 0,1 2 000 A a0 0,01 aThis current is used to test the breaking capacity. Table 6 Operating time rating for fuse-links IRW 35 A Operating time s Test current min. max.2IR60 600 300 A 0 10 2 000 A a0 0,01 aThis current is used to test
31、the breaking capacity. 5.6 Current steps This test does not apply to this type of fuse-link. 5.7 Breaking capacity The tests and requirements are given in 5.5. 5.8 Terminal strength 5.8.1 Test A force (F1, F2) shall be applied to the tabs of the fuse-link in accordance with Table 7 and Figure 2. 9 D
32、IN ISO 8820-7:2011-05 5.8.2 Requirement Table 7 Terminal push and pull forces Fuse-link rating Push (F1) and pull (F2) forces A N 35 90 1 W 35 90 1 (each tab) Key F1push force F2pull force Figure 2 Terminal push and pull forces 6 Dimensions and designation examples 6.1 Types Table 8 Types Fuse-link
33、rating A Type in accordance with Figure 35 3 W 35 4 10 DIN ISO 8820-7:2011-05 6.2 Fuse-links with IR 35 A Dimensions in millimetres Figure 3 Fuse-links with IR 35 A 11 DIN ISO 8820-7:2011-05 6.3 Fuse-links with IRW 35 A Dimensions in millimetres Figure 4 Fuse-links with IRW 35 A 6.4 Designation exam
34、ple Designation of a fuse-link in accordance with this part of ISO 8820 for a rated current of 25 A: Fuse-link ISO 8820 G 25 12 DIN ISO 8820-7:2011-05 7 Test fixture 7.1 Test fixture for fuse-links with IR 35 A Key a, b measuring points for cold resistance Figure 5 Measuring points for fuse-links wi
35、th IR 35 A 13 DIN ISO 8820-7:2011-05 Dimensions in millimetres Figure 6 Test fixture for fuse-links with IR 35 A 14 DIN ISO 8820-7:2011-05 7.2 Test fixture for fuse-links with IRW 35 A Key a, b and c, d measuring points for cold resistance Figure 7 Measuring points for fuse-links with IRW 35 A 15 DIN ISO 8820-7:2011-05 Dimensions in millimetres Figure 8 Test fixture for fuse-links with IRW 35 A 16 DIN ISO 8820-7:2011-05 Bibliography 1 ISO 8820-2, Road vehicles Fuse-links Part 2: Users guide 17 DIN ISO 8820-7:2011-05
