The outdoor high-voltage AC drop-out fuse adopts an AC design and is suitable for AC power systems. This design allows it to work efficiently in outdoor environments and quickly cut off circuits to protect electrical equipment and personnel safety.
The drop-out fuse adopts a drop-out switch mechanism. When the fuse needs to operate, the wire or fuse element will fall off quickly through the action of gravity, thus cutting off the circuit. This mechanical triggering method ensures the reliability and rapid response of the fuse, and can quickly cut off the circuit when a fault occurs in the power system to prevent the fault from expanding.
Outdoor high-voltage AC drop-out fuses usually have good weather resistance and waterproof performance, and can operate stably for a long time in harsh outdoor environments. They are usually made of weather-resistant materials and are waterproofed and sealed to effectively withstand the effects of wind, rain, sun and harsh weather conditions, ensuring the reliability and durability of the equipment.
The design of outdoor high-voltage AC drop-out fuses is usually compact and takes up less space, making it suitable for installation and layout in outdoor environments. This allows them to be flexibly used in various types of outdoor equipment and facilities in power systems.
The main technical parameters
| Rated frequency(kV) |
50 |
| Rated voltage(Hz) |
12 |
| Rated current of fuse series of the same family(A) |
≤100 |
≤200 |
| Rated breaking current(kA) |
12.5 |
16 |
| Rated short-time power frequency withstand voltage(kV) |
Against the ground (dry test/wet test) |
42/1 |
| Fracture (dry test/wet test) |
48/1 |
| Lightning impulse withstand voltage(kV) |
Against the ground |
75 |
| Fracture |
85 |
| Creepage distance(mm) |
≥372 (e-level anti-fouling) |
| Mechanical life(times) |
500 |
| Service life(Year) |
≥20 |
Shape and installation dimensions
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