MRDT4-2 highPROTEC Series
Differential and backup protection for two-winding transformers and generator units.
Category: Safety System
Descrizione
Product overview
Built for dependable control and clear integration.
MRDT4 is tailored to transformer differential protection while providing communications and backup functions in the same relay. It can also protect generator-transformer units where the step-up transformer is included within the protection zone.
Configuration reference
Variant overview
| Variant | At Stock | Hardware | Measurement | Housing type | Communication Ports | Environment |
|---|---|---|---|---|---|---|
| MRDT4-2A0AAA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Without protocol | Standard |
| MRDT4-2A0ABA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Modbus RTU, IEC 60870-5-103, DNP 3.0 RTU | RS485/terminals | Standard |
| MRDT4-2A0ACA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2A0ADA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Profibus-DP | optic fiber/ST-connector | Standard |
| MRDT4-2A0AEA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Profibus-DP | RS485/D-SUB | Standard |
| MRDT4-2A0AGA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | Modbus RTU, IEC 60870-5-103, DNP 3.0 RTU | RS485/D-SUB | Standard |
| MRDT4-2A0AHA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | IEC 61850, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100MB/RJ45 | Standard |
| MRDT4-2A0AIA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for door mounting | IEC 60870-5-103, Modbus RTU, DNP 3.0 RTU | RS485/terminals, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2A0BAA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for 19'' rack mounting | Without protocol | Standard |
| MRDT4-2A0BBA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for 19'' rack mounting | Modbus RTU, IEC 60870-5-103, DNP 3.0 RTU | RS485/terminals | Standard |
| MRDT4-2A0BCA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for 19'' rack mounting | Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2A0BHA | NO | DI:8 DO:7 | Standard Ground Current | Housing suitable for 19'' rack mounting | IEC 61850, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100MB/RJ45 | Standard |
| MRDT4-2D0AAA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | Without protocol | Standard |
| MRDT4-2D0ABA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | Modbus RTU, IEC 60870-5-103, DNP 3.0 RTU | RS485/terminals | Standard |
| MRDT4-2D0ACA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2D0AHA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | IEC 61850, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100MB/RJ45 | Standard |
| MRDT4-2D0AIA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | IEC 60870-5-103, Modbus RTU, DNP 3.0 RTU | RS485/terminals, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2D0ATA | NO | DI:16 DO: 13 | Standard Ground Current | Housing suitable for door mounting | IEC 60870-5-103, Modbus RTU, DNP 3.0 RTU | RS485/terminals IEC 61850, Modbus TCP, DNP 3.0 TCP/UDP, IEC 60870-5-104 | Ethernet 100 MB/RJ45 | Standard |
| MRDT4-2D3ABB | NO | DI:16 DO: 13 | W1/W2 Sensitive Ground Current | Housing suitable for door mounting | Modbus RTU, IEC 60870-5-103, DNP 3.0 RTU | RS485/terminals | Conformal Coating |
Downloads
Technical documentation
Product specifications
- DOK-FLY-MRDT4-2D.pdfDownload PDF↓
- DOK-FLY-MRDT4-2E.pdfDownload PDF↓
Technical manuals
- MRDT4-3.7-DE-MAN_C.pdfDownload PDF↓
- MRDT4-3.7-EN-MAN_C.pdfDownload PDF↓





