MRI4 Feeder Protection (MRI4-2A0AAA)
The protection functions of the MRI4 have been adapted to comply with the requirements of the VDE-AR-N-4110:2018.
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
CT measurement always with 1 A and 5 A
Plausibility verification intelligence
Optimized functional overview by hiding unused functions, parameter and assignments
On-board testing without removing the wiring
Interconnection of renewable energies (DER – distributed energy resources) to the public grid.
Over- / Undervoltage protection.
Protection of High, Medium and Low Voltage feeders against thermal damages by overload or short circuit currents.
Protection of High, Medium and Low Voltage feeders against overvoltage (insulation damage) and undervoltage.
Auto reclosure option to fix short duration faults (like bird flying through overhead lines, ice on lines, lightning’s hitting overhead lines, wind caused arcing by on overhead lines.