6RA2875-6DS21-0
This model is part of the Siemens SIMOREG K 6RA28 series, which are fully digital, compact DC converters designed for supplying armatures and excitation in variable-speed DC drive systems
| Parameter | Specification |
| Product Family | SIMOREG K 6RA28 |
| Device Type | Fully Digital DC Converter (Compact) |
| Operational Quadrant | Single-Quadrant (1Q) / Non-Reversing |
| Rated Supply Voltage (3 AC) | 400 V / 460 V / 575 V (Auto-ranging) |
| Rated DC Armature Voltage | 485 V DC |
| Rated DC Armature Current (I_a) | 200 A |
| Rated Power Output (approx.) | 97 kW (Based on 400V supply / Typical DC motor matching) |
| Rated DC Excitation Voltage | 340 V DC (max) |
| Rated DC Excitation Current | Up to 25 A |
| Mains Frequency | 45 – 65 Hz (Automatic adaptation) |
| Protection Degree | IP00 (Open type for installation in control cabinets) |
| Cooling Method | Forced air cooling (Fan required for rated current) |
| Ambient Temperature (Operation) | 0 °C to +45 °C (At rated current) |
| Ambient Temperature (Storage/Transport) | -30 °C to +85 °C |
| Weight (approx.) | 23 kg |
| Control Stability (Speed) | – 0.1% (with analog tachometer) |
| – 0.006% (with digital tachometer/digital setpoint) |
