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The impact on use after the fuse aging

After the fuse is aging, the danger of cutting the current without the fuse is not melted. The aging of fuse is equivalent to the decline of the rated value (current) rather than rising, causing the circuit to cut off the circuit at a small overload current or pulse.

The durability test in the IEC standard is life test. The method is to use DC power supply at normal temperature:

A. The amount of the forehead is until the temperature is measured under the temperature stable;

B, 1.2 times the rated current 1h cutting off current 15min. Round 100 times;

C. Power electricity 1.5in 1H measurement voltage drop;

D. Test voltage drop with A method.

Requirements: The voltage reduction before and after the test should not exceed 10%, and the logo is still clearly argued, and there is no inferior change in the welding point of the end cap.