This specification defines the qualification program for lowvoltage, supplemental fuses. Fuses covered will be limited toaxial-leaded, radial-leaded and surface mount configurations havinga current rating of no greater than 60 A, maximum voltage rating of600 VAC/DC and interrupting rating of 10,000 A maximum. Thequalification program is defined in table 1, and the flow diagram.Specification sheets can be added, as required, to define specificproducts or to cover unique / specific requirements. This documentdoes not relieve the suppliers of their responsibility to maintaintheir own company’s internal qualification program and the fusesshall continue to meet all applicable requirements of UL 248-14 /CSA-C22.2 No. 248.14.
Three types of fuses are covered in this specification. Theyinclude:
Type I – The type I fuse is designed to operate (open) within agiven time period at 200% overload. The remainder of thisspecification is written with the 200% overload test as thestandard.
Type II – The type II fuse is designed to operate (open) withina given time period at 250% overload. For a Type II fuse, the 250%overload shall be substituted throughout this specification where200% overload is noted. All other requirements shall continue to bemet.
Type III – The type m fuse is designed to operate (open) withina given time period at 300% overload. For a Type m fuse, the 300%overload shall be substituted throughout this specification where200% overload is noted. All other requirements shall continue to bemet.
Preconditioning
This process is intended to simulate exposure to the thermal andcleaning environments of the assembly process before qualificationtesting. The component assembly process simulation requirements fordifferent types of processes are described in annex A.
- Edition:
- 06
- Published:
- 03/01/2006
- Number of Pages:
- 36
- File Size:
- 0 files
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