MRMV4 Motor protection (MRMV4-2A0AAA)
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Configuration
The MRMV4 is a protection relay which uses the latest Dual-Core-Processor Technology
to provide precise and reliable protective functions. Also it is very easy to operate.
The MRMV4 provides all necessary functions to protect low and medium voltage motors at all power levels.
The protection functions are based on current and voltage measurement and supervise all thermal conditions, motor start sequence, stall and locked rotor, undercurrent and incomplete sequence.
Overcurrent functions and earth fault functions are also available as power protection, frequency and voltage elements.
The motor operation can be monitored by statistic and trend recorders.
The protection functions of the MRMV4 have been adapted to comply with the requirements of the VDE-AR-N-4110:2018.
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 |
Complies with IEEE 1547‑2003
Amended by IEEE 1547a‑2014
Complies with ANSI C37.90‑2005
Complies with “Engineering Recommendation G59 Issue 3 Amendment 4 – July 2018”
Complies with “Engineering Recommendation G99 Issue 1 Amendment 3 – May 2018”
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
VT measurement from 0 V up to 800 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
Menu Languages supported: English, German, Spanish, Portuguese, French, Russian, Polish, Romanian
Start Cycle Supervision
Overload
Jam / Locked Rotor
Underload
Unbalanced Load
Number of Starts, Counters,…
Keeping motor load under the Thermal Damage Curve