MV fuses provide main or back-up protection against overload and overcurrents
Medium Voltage Fuses are current limiting power fuses having voltage ratings from 3.6kV to 40.5kV. Medium Voltage Fuse ratings include continuous current ratings ranging from 0.5 to 1,200 amps. The main Medium Voltage Fuse types include the E Rated Fuse, the R Rated Fuse and the Potential Transformer or PT rated fuse. E-rated medium voltage fuses are general purpose fuses that are primarily used to protect transformers and provide both current overload, and short circuit, protection. R-Rated fuses are back-up fuses primarily used to protect motors and motor controllers. R-Rated fuses only provide short circuit protection. PT medium voltage fuses are designed to protect potential transformers.
MV Fuse consists of a fuse-base and a fuse-link in structure design.
The main components of the fuse is the insulating body, fuse-element, fittings and extinguishing material.
Wolun offers current limiting fuses for medium voltage systems. Two housing materials are applicable-porcelain and resin-fiberglass. Both of them are characterized by high mechanical and thermal resistance.
The fuses can operate as sole devices or can be combined with air insulated and SF6-insulated switch disconnectors.
