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1、JAPANESE AUTOMOBILE STANDARD JASO D 612-97 Rated current 1 2 3 4 5 7.5 10 15 20 25 30 Blade type electric fuselinks for automobiles Table 1 Classification Type Housing colour Standard type Mimi type Black O O Grey O O Voilet O O Pink O O Tan O O Brown O O Red O O Blue O O Yellow O O Natural(White) O
2、 O Green O O i. !Scope This standard specifies the standard and mini blade type fuse- links (hereinafter referred to as “fuse-links“) used for electrical equipments and circuits of automobiles, with rated voltage of 32 V or less and rated current of 30 A or less. Remarks 1. Fuse-links of 20 A or mor
3、e, some of which have the same rated current with those specified in JASO D 614, are different in electrical character- istics and types from them. 2. Applicable standards for this standard are (shown) as follows: JIS C 3406 JIS H 3100 JIS K 6301 JASO D 611 IS0 6722-4 Low-voltage cables for automobi
4、les Copper and copper alloy - Sheets, plates and strips Physical testing methods for vulcanized rubber Low-tension cables with reduced outside diam- eter for automobiles Road vehicles - Unscreened low-tension cables - Part 4: Conductor sizes and dimensions for thin wail insulated cables 3. Correspon
5、ding International Standards: ISO/CD 8820-1:1996 Road vehicles - Fuses - Part 1: Definitions general test requirements ISOICD 8820-3:1996 Road vehides - Fuses - Part 3: Fuse- links with tabs (blade type) 2. Classification The fuse-links of each rated current shall be classified by hous- ing colour a
6、nd type as shown in Table i. JAS0 D 612-97 Items (1) Maximum voltage drop Performance requirements Test method 6.2 and 6.1 1 Shall be in accordance with Table 3. (2) Operating time rating I Shall be in accordance with Table 4. Permanent arc shall not occur after fusing and the leakage current flow t
7、hrough the fuse-links shall no texceed 0.5 mA. The pierced holes of housing and the terminals shall not melt. I 6.3 and 6.11 6.8 and 6.1 1 6.4 and 6.1 i Transient current cycling (10) Removability (11) Strength of terminals (4) Shall be removable from the test jig intactly and the markings and housi
8、ng colour shall not illegible and unrecognizable, respectively. The dimensional displacement of the terminals shall not exceed 0.5 mm. 6.9 and 6.1 1 6.10 and 6.1 1 Vibration Test current 110% of rated current 135% of rated current I (5) Temperatureihumidity Operating time Mimimum Maximum 100 h - 0.7
9、5 s 1800 s I (6) Resistance to oil 600% of rated current I (7) Resistance to fuel 0.02 s 0.2 s Shall meet the requierments for (1) maximum voltage drop, (2) operating time rating, (10) removability and (11) terminal strength after each item has been tested. I 6.5 and 6.11 I 6.6.1 and 6.11 I 6.6.2 an
10、d 6.1 1 I 1 6.6.3 and 6.1 1 Maximum current characteristic The leakage current flow through terminals shall not exceed 0.5 mA. I 6.7 and 6.11 I (9) Breaking capacity 200% of rated current I 0.15s I 5 s I 350% of rated current I 0.04 s I 0.5 s I 2 JAS0 D 612-97 4. Dimensional requirements The dimensi
11、onal requirements for the fuse-links shall be as shown in Figs1 and 2. Fig. 1 Standard type Chamfered Max. 5.5 Min. 0.3 I I I 4 Max.0.5 0 . 6 ; 1: Max. 3.8 Unit: mm Fig. 2 Mini type Unit: mrn 1 10.9 i 0.3 4 Max. 4.0 p 0.82 I 0.04 Max. 0.6 3 JASO D 612-97 5. Appearance The appearance of fuse-links sh
12、all be free from defects harm- ful to use and the inside fusible part shall be visible from the outside. 6. Test method 6.1 Test conditions The test(s) of the fuse-links shall be conducted underthe fol- lowing conditions unless otherwise specified. (1) Any tests other than the vibration and temperat
13、ure/ hu- midity cycle tests shall, in general, be performed in such a manner that the terminal face of the fuse-link is mounted in the horizontal plane. (2) All electrical tests shall conform to the testing arrange- ment shown in Fig.3 and be made with direct current maintained within tolerance o f
14、f 1% at a temperature of (23 2 5)%, unless the current and voltage tolerances are otherwise stated. (3) The connecting cables used in the electrical tests shall conform to JIS C 3406, JASO D 611 and IS0 6722-4. (4) Connections to the fuse-link shall be made using the connecting cable of not less tha
15、n 600 mm in length speci- fied in Table 5. When two or more fuse-links are tested in series, they shall be mounted not less than 150 mm apart. (5) Make vibration and environmental exposure tests with- out current passing through the fuse-links. (6) The voltage drop (Vcd-Vab) and full-voltage drop (V
16、ef) of the test jig shall be 2 mVIA or less and 4 mVIA or less, respectively. They shall be measured by allowing 10 A electric current to flow through a dummy fuse-link as shown in Fig.4. The (Vcd-Vab) and (Vef) shall be measured at the measuring points shown in Fig.3. Remark: Fig.3 Testing arrangem
17、ent Measuring point for voltage drop I n C One cycle Time (h) 6.6.2 Resistance to oil The lubricating oil resistance test shall be performed in the fol- lowing procedure: (1) Immerse a fuse-link sample in the test oil No.1 (lubricat- ing oil) given under Clause 12.3 (Testing equipment) of JIS K 6301
18、 for one minute. (2) Remove the fuse-link sample from the oil and subject it to a temperature of (90 I2)“C for one hour. (3) Drain all liquid from the fuse-link sample. 6.6.3 Resistance to fuel The fuel oil resistance test shall be performed in the following procedure: (1) Immerse a fuse-link sample
19、 in the test oil Type C (fuel oil) given under Clause 12.3 (Testing equipment) of JIC K 6301 for one minute. (2) Remove the fuse-link sample from the oil and dry it at a temperature of (90 f 2)“C for one hour. (3) Drain all liquid from the fuse-link sample. 6.7 Maximum current test The maximum curre
20、nt test shall be performed in the following procedure: (1) Apply a current equivalent in value to the rating of the fuse-link on test for a duration of 5 min. (2) Increase the current value in steps of 2.5% of the fuse- link rating each five minutes until the fuse-element melts. (3) Apply a 32 V vol
21、tage after fusion and measure the leak- age current. 6.8 Breaking capacity The breaking capacity test shall be performed in the following procedure: (I) A current of (1 O00 I 50)A shall be applied at (32 + 2.0/ -0) VDC with a (2.0 10.5) ms time constant to the fuse- link in the circuit as shown in F
22、ig. 7. Connections shall be made to the fuse-link by not less than 600 mm of the connecting cables in Table 5. (2) Apply a 32 V voltage after fusion, measure the leakage current and check the appearance of the fuse-link for abnormalities. 7 JAS0 D 612-97 Type of fuse-link Fig.7 Breaking capacity tes
23、t circuit Force si Remark The symbols in the figure refers to the folloing: Q : Power source Sch : Switch A :Ammeter A : Adjusting resistor K Si : Fuse short circuiting switch : Fuse (-link mounted on the test jig) 6.9 Dismountability inspection Pull out a fuse-link sample from the test jig two minu
24、tes after it fused. 6.10 Strength of terminals Apply the force shown in Table 6 to a fuse-link sample in the way as shown in Fig.8 and measure the displacement amount. Fig.8 Terminal strength test Force 70 b a n d a r d type I I Mini type 50 8 JASO D 612-97 Temperature/humidity cycling test 6.1 1 Te
25、st sequence and number of test samples The test sequence and number of test samples shall be as speci- fied on Table 7. 3 (5) 6.6.1 a - ?Si equenci lo. - 1 Vibration 2 3 (4) 6.5 a 3 Transient current cycling test Voltage drop test 4 3 (3) 6.4 a 3 (1) 6.2 aaaa 5 6 7 - a - 9 10 11 - 12 13 3 (6) 6.6.2
26、I 3(7) 1 6.6.3 1 I 1 1 1 1 I Tests for resistance to oil and fuel Maximum current test I 3(9) I 1 8 1 I I I I I Breaking capacity test 6.3 a aaaa 6.3 2 2222 Operating time rating test 600% I 6.3 I 1 2 1 12121212 6.3 2 2222 6.3 2 2222 Dismountability inspection Remarks 1: Each test sample group shall
27、 contain eight fuse- 7. Designation (of Product) links. The designation of fuse-link shall be in accordance with the order of “standard name. tvDe and rated current It or “standard 2 “8“ means that all of eight fuse-links are used at a . I . time. number, type and rated current.“ (Example) Blade typ
28、e (electric) fuse-links (for automobiles), standard type, 10 A JACO D 612, mini type, 1 O A 3: “2“ means that eight fuse-links are used by twos. 4 Percentage (%) of the operating time rating test refers to the ratio to the rated current. 8. Marking The rated current, manufacturers name or symbol and
29、 rated voltage 32 V shall be permanently marked on the fuse-link body. - Reference standard: JACO 0 614 High current time rag fuse links for automobiles 9 In the event of any doubt, the original standars in Japanese should be referred. : THIRD PHASED STANDARD (The standard where SI units and newly v
30、alues are given and do not using customary units, but it is excepted that the standards are represented in only accustomed metric units as m, A, Hz etc.) Established by the Standard Council of JSAE Date of Establishment : 1988-3-30 Date of Revision : 1997-3-27 Sub Committee in which the draft was ma
31、de : SC of Fuse Technical Committee under which the draft was discussed : TC of Electric System Investigating Committee : Standard Committee under the Standard Council Published by The Society of Automotive Engineers of Japan, Inc. 10-2, Goban-Cho, Chiyoda-ku, Tokyo 102, Japan This printed matter has been prepared with financial support from the Japan Auto-Race Organization.