Performance Analysis Of Drop-out Fuses In Terms Of Materials And Structure

In terms of structural design, the 33kv fuse uses a visible drop mechanism. After the fuse blows, the fuse tube falls rapidly under gravity, preventing the arc from remaining in the system and causing additional damage. The melting of the fuse creates an arc, and the large amount of gas generated inside the fuse tube acts as a blower to the arc. This mechanism interrupts the fault current more quickly than the traditional cover drop out fuse, thus reducing thermal stress and the risk of equipment damage, demonstrating its safety.

Regarding material selection and manufacturing processes, the superior wax filament material, encapsulation structure, and fixing mechanism reduce contact resistance and the possibility of poor contact. During installation, attention should be paid to the rated breaking capacity of the drop fuse to avoid failure to interrupt the fault current, which could lead to a fuse tube explosion.