| Specification |
Details |
| Model |
MRD1T2HTL6M42 (MRDT4 variant) |
| Series |
HighPROTEC MRDT4 |
| Type |
Transformer Differential Protection Relay |
| Power Supply |
24–270 VDC, 48–230 VAC |
| Current Transformers |
1A/5A (selectable, no hardware jumpers required) |
| Voltage Inputs |
0–800 VAC (configurable 60–520 V) |
| Digital Inputs |
8 |
| Output Relays |
7 |
| Protection Functions |
Phase/earth differential, over/under voltage, over/under frequency, power protection, restricted earth fault, overcurrent, inrush blocking, thermal overload, Fault Ride Through (FRT) with Auto-Reclosure (AR) |
| Communication Interfaces |
RS485 (IEC60870-5-103, Modbus RTU, DNP3.0 RTU), Ethernet 100 MB/RJ45 (Modbus TCP, DNP3.0 TCP/UDP, IEC60870-5-104), optional IEC61850 |
| Control |
Up to 6 switchgear devices |
| Display |
Large graphical display |
| Software |
Smart view SE (parameter setting and evaluation, included) |
| Commissioning Tools |
Built-in fault simulator, plausibility checks |
| Operating Temperature |
-20°C to +70°C (-4°F to +158°F) |
| Storage Temperature |
-30°C to +80°C (-22°F to +176°F) |
| Relative Humidity |
5% to 95%, non-condensing |
| Vibration |
4 G, 5–500 Hz (estimated, based on Woodward standards) |
| Shock |
20 G peak (estimated) |
| Protection Rating |
IP54 (front, when mounted) |
| Mounting |
Panel/door mounting, optional 19" subrack |
| Dimensions |
Not specified (compact for panel integration) |
| Weight |
Approximately 2–3 kg (4.4–6.6 lbs, estimated) |
| Certifications |
CE, UL/cUL, BDEW, VDE-AR-N 4105:2018 |
| System Compatibility |
Two-winding transformers, generators, Woodward control systems, SCADA/DCS |
