Medium Voltage Fuse Types

Medium voltage fuse ratings include continuous current ratings ranging from 0 5 to 1 200 amps.

Medium voltage fuse types.

The terms medium voltage and high voltage have been used interchangeably by many people to describe fuses operating above 600 volts. Medium voltage fuses are current limiting power fuses having voltage ratings from 0 6kv to 34 38kv. Drop out fuses in this type of fuse the melting of fuse causes the element to drop under gravity about its lower support. Filling a fuse body with sand provides additional cooling of the arc and increases the breaking capacity of the fuse.

Current limiting medium and high voltage fuses are used as protection devices in medium voltage switchgear such as distribution transformers motors capacitor banks and voltage transformers. Cooper bussmann circuit protection solutions comply with major international standards. Ansi bs din iec and ul. Fuse types medium voltage fuses generally fit.

Some types of distribution switchgear use fuse links immersed in the oil that fills the equipment. Each product is backed by an efficient worldwide distribution network with unrivaled service and technical support. Cooper bussmann is a world leading supplier of medium voltage fuses. They offer a very fast current limiting operation in case of short circuit failures.

The main medium voltage fuse types include the e rated fuse the r rated fuse and the potential transformer or pt rated fuse. General purpose fuses have the ability to interrupt both large and small short circuits down to currents which would cause the fuse to open within one hour. High voltage fuses are for circuits carrying voltages greater than 38 000 vac. Medium voltage fuses 2 75kv 5 5kv 8 25kv 15 5kv 25 8kv and 38kv ferrule mounted fuses mersen fuses for the protection of transformers and distribution lines deliver overload and short circuit protection.

Technically speaking medium voltage fuses are those intended for the voltage range from 2 400 to 38 000 vac. General purpose and back up. Switch type fuses in this type of fuse basically metal enclosed of a switch and a fuse and is far used for low and medium voltage level. Topics include what is switchgear types of switchgear types of switchgear enclosures front and rear access options for switchgear installation and maintenance switchgear insulating mediums switchgear interrupting devices interrupt and short circuit ratings continuous current and ansi and ieee voltage classes.

Learn the fundamentals of medium voltage switchgear. These current limiting fuses will melt at current that can be as low as 1 7 times the fuse.