MRA4 Directional Feeder Protection (MRA4-2D0AFB)
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Prices incl. VAT plus shipping costs Please configure your device with the selection fields available below. You must select a value for each field and then you can submit a price request.
Configuration
The MRA4 is a high precision and reliable protection and control relay. The intuitive
setting concept with plausibility test enables reliable and time optimized configuration
of the extensive protection function to a variety of applications such as incoming
or outgoing feeder protection, network protection and generator protection.
In fact, the MRA4 is our interconnection and mains decoupling expert.
The implemented switchgear management guaranties an efficient and safe control and supervision.
The device is a bench mark in flexibility and usability and offers various communication options. The hardware is designed for all nominal values in combination with protection and control functionality.
The parameterizing and analyzing software Smart view is usable for each HighPROTEC device and free of charge.
Functional Overview
Approvals
 | |
 | UL File Nr.: E217753 certified regarding UL508 (Industrial Controls) |
 | CSA File Nr.: 251990 certified regarding CSA-C22.2 No. 14 (Industrial Controls) |
 | EAC certified by EAC (Eurasian Conformity) |
 | KEMA Type tested (and certified) regarding IEC 60255‑1 and regarding IEC 61850 |
| Component certificate regarding the German grid code standard VDE-AR-N 4110 (2018-11) |
Complies with IEEE 1547‑2003
Amended by IEEE 1547a‑2014
Complies with ANSI C37.90‑2005
Complies with “Engineering Recommendation G99 Issue 1 Amendment 6 – March 2020”
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
VT measurement from 0 V up to 800 VAC (300 VAC for some order options)
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
Menu Languages supported: English, German, Spanish, Portuguese, French, Russian, Polish, Romanian
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.
Frequency based protection option, examples:
Over-/Underfrequency supervision
Load shedding by ROCOF
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.