MV Fault Current Limiter
The fastest limiting and switching device in the world, the fault current limiter based on pyrotechnic technology, is the technological answer to the problem of higher level of short circuit current where system augmentation takes place and replacement of whole protection switchgear is not feasible.
In comparison with complex conventional solutions, the MV Fault Current Limiter has both technical and economic advantages when used in transformer or generator feeders, in switchgear sectionalizing and connected in parallel with reactors.There is no need for customers to upgrade all the switchgear, busbars cables, etc.
The advantages of the use of a MV Fault Current Limiter in a network are:
• Reduction of the short-circuit current of the system (compared to the short-circuit current with closed tie
circuit breaker)
• Reduction of voltage sags and flicker due to the lower total source impedance
• Reduction of harmonics due to the lower total source impedance
• Higher system availability due to the parallel connection of the feeding generators and transformers
• Higher loads possible in a sub-system (higher than the ratings of the feeding generators and transformers in that sub-system
Features
• Conform to CIGRE Technical Brochure 239,497
• Conform to IEEE Std C37.302-2015
• Conform to IEC 62271-1 and IEC 60282-1
• Indoor or outdoor application
• Mounted in loose type as well as a metal-clad switchgear panel
• High duration with climate, land or offshore,cold winter or hot summer
• Easy to be installed and maintained, save money
• High reliability proofed in lots of installations
Benefits
• Reduces substation cost
• Solves short-circuit problems in new substations and substation extensions
• Optimum solution for interconnection of switchboards and substations
• In most cases the only technical solution
• Reliability and function proofed in lots of installations
• The peak short-circuit current will never be reached
• The short-circuit current is limited at the very first current rise