company news about Test and evaluation of fuse life

The IEC standard provides for "durability test method", while the UL standard does not.

The durability test in IEC standards is called the life test. Its method is to test at normal temperature using DC power supply:

a, frontal current until the temperature is stable voltage drop;

B. 1.2 times rated current 1h Cut-off current 15min Loop 100 times;

c. Power on 1.5In 1h to measure voltage drop;

d. Measure voltage drop by the same method as a.

Requirements: The voltage drop change before and after the test should not exceed 10%, and the label is still clear and identifiable, and the end cap solder spot does not appear any deterioration.