Question
Download Solution PDFFor rewirable fuse, employing copper wire as the fusing element, the fusing factor is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Fusing factor: It is the ratio of minimum fusing current and current rating of the fuse. Minimum fusing current is the minimum value of current due to which fuse melts.
The current rating of fuse is the maximum value of current due to which fuse does not get melt.
Fusing factor = (Fusing current) / (Current rating of fuse)
Explanation:
- The value of fusing factor is always greater than 1.
- The small the value of fusing factor, greater is the chance of deterioration of fusing element due to overheating and oxidation.
- For a semi enclosed or rewirable fuse which employ copper as the fuse element, the value of fuse factor is usually 2.
- Lower values of fusing factor can be employed for enclosed type cartridge fuse which uses silver or bimetallic elements.
Last updated on Jul 1, 2025
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