Causes And Preventive Measures For Component Overheating Caused By Failure Of Vertical Fuse Disconnector

After the second vertical fuse switch disconnector test was triggered, nhrt40 vertical fuse switch disconnector failed to trip and disconnect the circuit as expected, causing the protection function to fail. The backflow current continued to exist, causing the temperature of the components in the corresponding string to rise sharply, thereby causing the temperature of the components in the corresponding string to rise rapidly and posing a potential safety hazard.