SAE J 1284-1988 Blade Type Electric Fuses Standard.pdf

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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro

2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (412) 772-8512 FAX: (412) 776-0243TO PLACE A DOCUMENT

3、 ORDER; (412) 776-4970 FAX: (412) 776-0790Copyright 1988 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001STANDARDSubmitted for recognition as an American National StandardJ1284REV.APR88Issued 1979-12Revised 198

4、8-04Superseding J1284 DEC79BLADE TYPE ELECTRIC FUSESForewordThis Document has not changed other than to put it into the new SAE Technical Standards boardFormat.1. ScopeThe fuses shown are for use in motor vehicles, boats, and trailers to protect electrical wiring andequipment. This standard is for t

5、he construction shown and is not intended to restrict the design and use ofother configurations and materials capable of meeting the vehicle requirements.2. References2.1 Applicable PublicationsThe following publication forms a part of the specification to the extent specifiedherein. Unless otherwis

6、e indicated the latest revision of SAE publications shall apply.2.1.1 SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J726 MAY81Air Cleaner Test Code3. Definitions3.1 FuseA device designed to interrupt the electrical circuit when subjected to overcurrents. Th

7、is action is to benonreversible, and the fuse is intended to be replaced after the circuit malfunction has been corrected.4. Part 1Design Parameters4.1 MaterialsThe fuses shall have transparent non-conductive bodies capable of withstanding vehicleenvironmental conditions as set forth in this standar

8、d. Terminals shall have a suitable finish which will assurecorrosion protection and satisfactory mechanical and electrical properties.4.2 ConstructionFuse terminals shall be tightly attached to the fuse body. Fuse elements shall be clearlyvisible though the body. Typical overall dimensions are shown

9、 in Figure 1.SAE J1284 Revised APR88-2-FIGURE 1FUSE DIMENSIONS4.3 Marking (Initially And After Environmental Exposure)Fuses shall be marked on the fuse body with theamperage, voltage rating, and the manufacturers name or trademark. In addition, the fuse may be color codedprovided that the element re

10、mains clearly visible through the non-conductive body. All color coding shall be asshown in Table 1. Marking shall be legible at the conclusion of all tests set forth in this standard.TABLE 1FUSE COLOR CODESAmpere Rating Color3 Violet4 Pink5 Tan7-1/2 Brown10 Red15 Light Blue20 Yellow25 Natural (Whit

11、e)30 Light GreenSAE J1284 Revised APR88-3-5. Part 2 Performance Requirements5.1 Ampere RatingThis standard covers ampere rating up to an including 30A. Preferred ampere ratings areshown in Table 1. These ratings are determined at 24 C ambient temperature using a test procedure detailedin Part 3, Sec

12、tion 6.1 of this standard.The specific ampere capacity of the fuses is a function of the particular electrical system being utilized. To aidin determining the actual capacity change, several factors should be considered by the application engineer.5.1.1 WIREFigure 2 represents the approximate capaci

13、ty change due to cable sizes other than 5 mm2.FIGURE 2CHANGE IN FUSE CURRENT CARRYING CAPACITY FOR VARIOUS CABLE SIZES AT 24CSAE J1284 Revised APR88-4-5.1.2 TEMPERATUREFigure 3 represents the approximate capacity change with respect to ambient temperature.The use of fuses in ambient temperatures bey

14、ond the limits shown is not recommended.FIGURE 3CHANGE IN FUSE CURRENT CARRYING CAPACITY WITH CHANGES IN AMBIENT TEMPERATURE5.1.3 LOADINGIt is recommended that fuses not be loaded above 100% of their adjusted capacity based onambient temperatures and the use of cable sizes other than 5 mm2.In additi

15、on, it is further recommended that actual performance be verified through testing experimentally inthe vehicle.5.2 Voltage RatingFuses shall be capable of interrupting at any voltage up to and including 32 V.5.3 Maximum Voltage DropThe maximum voltage drop (in millivolts) at rated current across the

16、 fuse only shallbe as shown in Figure 4.SAE J1284 Revised APR88-5-FIGURE 4BLADE TYPE ELECTRIC FUSES - MAXIMUM VOLTAGE DROPOF FUSE AT RATED CURRENT5.4 PerformanceTests shall be conducted within an ambient temperature range of 19 29 C.5.4.1 AMPERE RATING TESTSFuses shall carry 110% of rated current co

17、ntinuously for a minimum of 100 h; shallopen in not less than 0.75 s or more than 1800 s at 135% of rated current; shall open in not less than 0.15 sor more than 5 s at 200% of rated current; and shall not open in less than 0.080 s at 350% of rated current.5.4.2 CURRENT CYCLING TESTFuses shall meet

18、the requirements of Part 2, 5.4.1 after a minimum of 250 000cycles.5.4.3 TRANSIENT CURRENT CYCLINGFuses shall meet the requirements of Part 2, 5.4.1 after a minimum of 50 000cycles of transient current cycling.5.5 Vibration TestFuses shall meet the requirements of Part 2, 5.4.1 after undergoing six

19、h of vibrationconditioning.5.6 Environmental ExposureFuses shall meet the requirements of Part 2, 5.4.1 after sequential exposure todust and accelerated aging conditioning.6. Part 3Test Procedure6.1 ProcedureThe fuses, with the exceptions noted in the vibration and accelerated aging tests, shall bem

20、ounted horizontally. When testing two or more fuses in series, the fuses shall be mounted no less than 150mm apart and with no less than 600 mm of interconnecting cable, except as noted for the transient currentcycling test. All electrical test shall be made using 5 mm2copper cable and a standard te

21、st module (as shownin Figure 5) or a suitable equivalent. The interface voltage drop (VCD- VAB) of the fixture should not exceed 2mV/A. The total voltage drop (VEF) should not exceed 4mV/A. The voltage checks shall be made using a solidcopper dummy with dimensions as shown in Figure 6.SAE J1284 Revi

22、sed APR88-6-FIGURE 5STANDARD TEST MODULEFIGURE 6DUMMY SLUGSAE J1284 Revised APR88-7-6.2 Voltage DropThe voltage drop (in millivolts) at rated current across the fuse only shall be measured at theindicated points across the fuse from terminal to terminal as shown in Figure. 4.6.3 Current Cycling Test

23、6.3.1 Resistors should be employed as load(s) to adjust the current to 70% of the fuse rating as shown in Figure 7.FIGURE 7CURRENT CYCLING WAVEFORM6.3.2 The test system voltage can be any convenient voltage up to and including 32 V (regulation 0.2 V).6.4 Transient Current Cycling Test6.4.1 Lamp bulb

24、s (EX. 1157, 194, and 168) should be employed as loads to adjust the initial peak transient currentto the percent of fuse rating as shown in Figure 8 and the initial steady-state current to 100% of the fuserating. The test system voltage should be 14 0.2 V.FIGURE 8TRANSIENT CURRENT CYCLING WAVEFORM6

25、.4.2 It is acceptable if current levels decrease below initial stated values during current cycling as a result ofnormal lamp aging. Lamp bulbs that burn out must be replaced.6.5 Vibration TestSuitably mounted samples shall be subjected to a simple harmonic motion having anamplitude of 0.76 mm trave

26、l (1.52 mm total excursion). The frequency shall be varied uniformly between thelimits of 10 55 Hz. The entire range of 10 55 Hz and returning back to 10 Hz shall be traversed inapproximately 1 min. The motion shall be applied for a period of 2 h in each of three mutually perpendiculardirections (to

27、tal of 6 h). (Testing to be performed without current passing through fuse.)SAE J1284 Revised APR88-8-6.6 Environmental Exposure6.6.1 DUSTFuses shall be placed in a dust chamber, Figure 9, unmounted and lying on their side. The chambershall contain about 1 kg of coarse grade dust conforming to SAE J

28、726a. The dust shall be agitated for 3 severy 20 min by compressed air. The air shall be free of oil and moisture, at a gauge pressure of 5.6 0.10kg/cm2entering through an orifice 1.5 1 mm in diameter. The total exposure time to dust shall be 5 h.FIGURE 9DUST CHAMBER (TYPICAL)6.6.2 ACCELERATED AGING

29、A total of 15 cycles as follows:16 h at 95 99% relative humidity and 37 1 C12 h at 40 1 C2 h at 70 1 C4 h at room ambientFIGURE 10TRAY (TYPICAL)1. Fuses shall be placed in the humidity chamber on a tray, Figure 10, with the blades down. Samples shall remain in the humidity chamberwhen testing cannot

30、 be completed in a 24 h period, for example, weekends.SAE J1284 Revised APR88-9-7. Notes7.1 Marginal IndiciaThe change bar (I) located in the left margin is for the convenience of the user in locatingareas where technical revisions have been made to the previous issue of the report. An (R) symbol to

31、o the leftof the document title indicates a complete revision of the report.PREPARED BY THE SAE FUSE TASK FORCE/ELECTRICALDISTRIBUTION SYSTEMS SUBCOMMITTEESAE J1284 Revised APR88RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThe fuses shown are for use

32、in motor vehicles, boats, and trailers to protect electrical wiring andequipment. This standard is for the construction shown and is not intended to restrict the design and useof other configurations and materials capable of meeting the vehicle requirements.Reference SectionSAE J726 MAY81Air Cleaner Test CodeDeveloped by the SAE Fuse Task Force/Electrical Distribution Systems Subcommittee