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.
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 SE is usable for each HighPROTEC device and free of charge.
Feature highlights
Comprehensive Protection Package
- Frequency measurement and ROCOF (af/dt) measurement is now user-adjustable. Further-more, measurement precision has been impro-ved: 5mHz from 45-55 Hz
- 6 elements phase overcurrent protection directional and non-directional (ANSI/IEC/51C/51V)
- Wattmetric Ground Fault Protection
- 2 elements unbalanced load protection
- Voltage protection (2) 6 elements selectable: V<, V>, V<(t)
- 6 elements unbalanced voltage supervision
- Fourth Voltage measuring input (2) 2 elements VE> or VX (for synchro-check)
- Synchro-check options: Generator-to-System or System-to-System
- 6 elements frequency protection; each can be used as: t>, f<, af/at (ROCOF), vector surge
- 6 elements power protection;
- each can be used as: P>, P<, Pr, Q>, Q<, Qr, S>, S<
- PAV,E maximum power infeed
- Two elements power factor (PF)
Interconnection package
The comprehensive interconnection package is summarized within one menu:
- Non-discriminating active power direction depending load shedding
- HVRT (High Voltage Ride Through)
- FRT (LVRT): Settable FRI-Profiles, optional AR coordinated
- QV-Protection: Undervoltage-Reactive
- Power protection
- Automatic Reconnection
- Frequency protection: 6 elements configurable as f<, f>, df/dt (ROCOF), vector surge
- CB-Intertripping
- Synchro-check Via Transformer
Recorders
- Disturbance recorder: 120 s non volatile
- Fault recorder: 20 faults Event recorder: 300 events
- Trend recorder: 4000 non volatile entries
Demand Management/Peak Values
- Peak values of current and power, average current and energy demand
Control
- 1 breaker
- Breaker wear
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 projects: Modbus, Profibus, IEC 60870-5-103/-104
Power Quality
- THD protectionr
Communication Options
- IEC 61850
- Profibus DP
- Modbus RTU and/or Modbus TCP
- IEC 60870-5-103/-104
- DNP 3.0 (RTU, TCP, UDP)
- SCADApter for Retrofit
- Configurable SCADA protocols: Modbus, Profibus, IEC 60870-5-103/-104, DNP3
- 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
Commissioning Support
- Customizable Display (Single-Line)
- Customizable Inserts
- Copy and compare parameter sets
- Configuration files are convertible
- Forcing and disarming of output relays
- Fault simulator: current, voltage
- Graphical display of tripping characteristics
- 8 languages selectable within the relay
- USB Connection
Logic
- Up to 80 logic equations for protection, control and monitoring
Time Synchronisation
- SNTP, IRIG-BOOX, Modbus, DNP 3.0, IEC 60870-5-103/-104
Cyber Security
- Menu for the activation of BDEW-Whitepaper-compliant security settings (e. g. hardening of interfaces)
- Scurity Logger
- Centralized Security Logs (Syslog)
- Encrypted Connection Smart view Device
- Device specific certificates (No man in the middle attacks)
- Multi-Password-Level
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)
CE certified
VDE FNN compliant
Download
PDF files
All essential
HighPROTEC MRA4
information such as Broschures or User Manuals etc. are available in our download section.
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