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: 2023-09.
Feature highlights
Redundant Ethernet
-20 / +70 °C
Intuitive
KEMA type tested
PAV,E
Additional Highlights
- 4 Analog Outputs (Type MRMV4-B)
- Long starting time for reduced voltage starts
- Emergency Start
- Incomplete sequence
- Anti-backspin time delay
- Permitted number of cold starts
- Supervision of starts per hour
- Mechanical load shedding
- Zero speed indication via input
- Motor stop inputs
- External alarm and trip inputs
Application
- Low and high voltage asynchronous motors. Protection based on current and voltage measurement
Motor Protection
- Thermal overload protection 49M
- Locked rotor protection 51LRS
- JAM or Stall protection 51LR
- Underload protection 37
- Motor start 48
- Starts per Hour 66
- Negative phase sequence (current unbalance) 46
- Overcurrent/short circuit prot. 50P/51P
- Earth overcurrent and short circuit protection 50N/51N
- Reclosing lockout 86
- RTD supervision via external temperature box 26 (type MRMV4-2B)
- Wattmetric Ground Fault Protection
Additional Protection
- 6 Overcurrent elements (nondir)
- 4 Earth Overcurrent elements (nondir)
- 2 Elements Residual Voltage
- 4 Over-/Undervoltage elements
- 6 Frequency elements
- 6 Power protection elements
- 2 Power Factor elements
- Demand Management
- THD Protection
Motor Start Recorder
- Max. RMS values of phase currents
- Negative phase sequence currents
- Start duration, Successful starts
- Used thermal capacity
- Temperature profile (optional)
Statistic Recorder
- Number of successful starts
- Average I2T values
- Average max. start current
Recorders
- Disturbance recorder: 120s non volatile
- Fault recorder: 20 faults
- Event recorder: 300 events
- Trend recorder: 4000 non volatile entries
Control
- 1 breaker, Breaker wear
Logic
- Up to 80 logic equations for protection, control and monitoring
Supervision Functions
- Breaker Failure, Trip Circuit Superv.
- Loss of Potential, Switch onto Fault
PC Tools
- Setting and analyzing software Smart view free of charge
- Including page editor to design own Control pages
- SCADApter to re-assign datapoints for Retrofit pro-jects: Modbus, Profibus, IEC 60870-5-103/ -104
Commissioning Support
- Customizable Display (Single-Line)
- Customizable Inserts
- Copy and compare parameter sets
- Configuration files are convertible
- Forcing and disarming of output relays
- Integrated fault simulator
- Graphical display of tripping characteristics
- 8 languages selectable within the relay
Communication Options
- IEC 61850
- Profibus DP
- Modbus RTU and/or Modbus TCP
- EC 60870-5-103
- IEC 60870-5-104
- DNP 3.0 (RTU, TCP, UDP)
- SCADApter
- Redundant Ethernet: Two Ethernet channels available on the device [Electrical Ethernet [RJ45]
or Optical Ethernet [FO] -fiber optic cable]
- Switch-Mode [Redundancy with RSTP]
- PRP - Parallel Redundancy Protocol
- HSR - High-Availability Seamless Redundancy Protocol
Time Synchronisation
- SNTP, IRIG-BOOX, Modbus, DNP 3.0, IEC 60870-5-103/-104
Cyber Security
- Menu for the activation of security settings (e. g. hardening of interfaces)
- Security Logger
- Centralized Security Logs (Syslog)
- Encrypted Connection Smart view Device
- Device specific certificates (No man in the middle attacks)
Technical Specs
Connections (Example)
certified regarding CSA-C22.2 No. 14
(Industrial Controls)
Type tested and certified by KEMA Laboratories in accordance with the complete type test requirements of IEC 60255‑1:2009.
certified by EAC
(Eurasian Conformity)
certified regarding UL508
(Industrial Controls)
CE certified
VDE FNN compliant
Download
PDF files
All essential
HighPROTEC MRMV4
information such as Broschures or User Manuals etc. are available in our download section.
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