High-Voltage Fuse is mainly used for overcurrent and short-circuit protection in high-voltage power systems. When overload or excessive current occurs, the fuse element melts quickly to disconnect the circuit, effectively protecting electrical equipment and power lines from damage, system failures, or fire hazards caused by abnormal current conditions. The product is widely used in power distribution systems, transformer protection, and high-voltage switchgear applications.
Hebei Fortis Technology Co., Ltd Product Brochure
Product Advantages
✓ Reliable overload and short-circuit protection performance
✓ Fast fault interruption for improved system safety
✓ Helps prevent equipment damage and fire risks
✓ Suitable for 10KV high-voltage power distribution systems
✓ Stable operation with easy maintenance and long service life
Application Scenarios
In rural electrification projects or urban fringe areas, the Complete Fuse Assembly is most commonly installed on the primary side of 11kV or 33kV pole-mounted transformers. When a transformer experiences an internal winding fault or core failure, this dropout fuse assembly instantly detects the overcurrent, melts the calibrated element, and mechanically releases the tube to fall open under gravity. This provides visible break protection for linemen and isolates the faulty transformer from the main feeder line, preventing cascading outages for hundreds of households.
For protecting lateral branch lines that tap off from main transmission trunks, this fuse cutout assembly acts as the first line of defense. In a typical configuration, a 33kV rated complete fuse assembly is installed at the branch point. If a tree falls on the branch line or a vehicle hits a pole downstream, the assembly interrupts the fault current before it affects the main grid. Unlike reclosers, this economical solution requires no auxiliary power, making it the preferred choice for long, rural overhead line branches with low load density.
Power factor correction banks located on distribution poles often require protection against internal capacitor element breakdown. The complete fuse assembly is matched specifically to the inrush current and discharge characteristics of capacitors. When a capacitor unit fails short-circuit, the fuse's fast-clearing expulsion design vents ionized gases downward (away from live parts), safely disconnecting the faulty can. This prevents the risk of case rupture or dielectric fluid leakage that could contaminate the surrounding environment.
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Tel.: +86 189 3266 2725
E-mail: sale@hbfortis.com
Add.: No.8-1, Zhenxing Street, Matun Town, Zaoqiang County, Hengshui City, Hebei Province
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