The generator differential protection relay MCDGV4 is a high precision protection for medium and high power generators. The step-up transformer can be integrated into the protection zone (unit protection/ block protection). In addition to the phase and earth differential protection, the device provides a variety of generator-specific protection functions.
The “all-inclusive” package comprises not only phase, earth current, voltage, frequency and power protection, but also an undervoltage directional reactive power protection with reconnection function and an adjustable Fault Ride Through (FRT) with AR detection.
The intuitive operating concept with plausibility checks and extensive commissioning functions such as the built-in fault simulator allows a safe and time-optimized maintenance and commissioning. The parameter setting and evaluation software Smart view SE can be used consistently across theentire family of devices.
Feature highlights
Redundant Ethernet
Out of step tripping
Inadvertent energization
KEMA type tested
Loss of field [excitation]
Comprehensive Generator Protection Package
- The phase and ground differential protection package detects electricalfaults within the ge-nerator or within the generator and the step-up transformer [unit protection]
- 2 elements overexcitation protection [overflu- xing] e. g. for the protection of the step-up trans-former during run-up [V/f]
- 2 elements underexcitation in order to detect faulty excitation
- Overload [Stator] / Thermal replica for the de-tection of long lasting minor overcurrents
- 6 elements (voltage dependenti overcurrentpro- tection [ANSI / IEC / 51C / 51V]
- Multiple reverse power elements for the protection of the prime mover
- [Pr, P, Q, S, PF and PAV,E]
- Negative phase sequence protection
- 2 elements phase distance protection
- Out of step tripping
- Power swing blocking
- 100% Stator ground fault protection [via third harmonic]
- Multi level overvoltage protection with settable reset ratio in order to protect the stator winding and the step-up transformer against inadmissa- ble voltages
- Multi level undervoltage protection with settable reset ratio
- Wattmetric Ground Fault Protection
- Inadvertent energization detection in order to detect the inadvertent supply of the mains voltage to the generator during stand still
- Unbalanced voltage protection
- Optional temperature supervision via external URTD-box with 12 sensors
Interconnection package
- FRT [LVRT]: Settable FRT-Profiles
- optional AR coordinated
- QV-Protection: Undervoltage-Reactive
- Power protection
- Automatic Reconnection
- Frequency protection: 6 elements configurable asf<, f>, df/dt [ROCOF)], vector surge
- CB-Intertripping
- Synchro-check
Recorders
- Disturbance recorder 120 s non volatile
- Fault recorder: 20 faults non volatile
- Event recorder 300 events non volatile
- Trend recorder: 4000 non volatile entries
Control
- Up to six breakers [or isolators/ grounding switches]
- Breaker wear
PC Tools
- Setting and analyzing software Smart view free of charge [via USB or Ethernet]
- Including page editor to design own Control pages
- SCADApter to re-assign datapoints for Retrofit projects: Modbus, Profibus, DNP3, IEC 60870-5-103/-104
Communication Options
- IEC 61850, Profibus DP
- Modbus RTU and/or Modbus TCP
- EC 60870-5-103/-104
- DNP 3.0 [RTU, TCP, UDP]
- 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
- 7 languages selectable within the relay
Logic
- Up to 80 logic equations for protection, control and monitoring
Time Synchronisation
- SNTP, IRIG-BOOX, Modbus, DNP 3.0, TEC 60870-5-103/-104
- Time synchronization via PTP - Precision Time Protocol [IEEE 1588], Precision Time Protocol [PIP) is a protocol to synchronize clocks of different devices in a network to a so called highly precise grandmaster clock.
Cyber Security
- Menu for the activation of BDEW-Whitepaper-compliant 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]
- 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)
Component certificate regarding the German grid code standard
VDE-AR-N 4110 (2023-09)Component certificate regarding the German grid code standard VDE-AR-N 4120 (2018-11)
certified regarding UL508
(Industrial Controls)
CE certified
certified by Lloyd‘s Register EMEA
VDE FNN compliant
certified by American Bureau of Shipping (ABS)
Complies with ANSI C37.90-2005.
Download
PDF files
All essential
HighPROTEC MCDGV4
information such as Broschures or User Manuals etc. are available in our download section.
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