| Item | Specification |
|---|---|
| Part Number | 6RA2877‑6DS21‑0 |
| Product Family | SIMOREG 6RA28 |
| Product Type | Single‑quadrant thyristor DC converter |
| Input Supply | 3‑phase AC 400 V, tolerance +15 % / −20 % |
| Rated Frequency | 45 ‑ 65 Hz |
| Rated Armature DC Current | 250 A |
| Armature Output Voltage | 0‑420 V DC |
| Power Circuit Topology | B6C single‑quadrant non‑regenerative bridge |
| Rated Exciter Voltage | 340 V DC, uncontrolled field rectifier |
| Typical Motor Power @400V | 121 kW |
| Power Loss at Rated Current | Approx. 800 W |
| Control System | Analog closed‑loop: speed, current, armature voltage |
| Interfaces | Analog set‑point input, binary control I/O terminals |
| Cooling | Forced‑air cooling with integrated fan, fan data:95 W, 0.24 A, airflow 570 m³/h |
| Protection Class | Power unit IP00, control electronics IP20 |
| Mounting | Cabinet floor‑mount installation |
| Operating Ambient Temperature | 0 °C … +45 °C; forced cooling required above 35 °C |
| Weight | Approx. 23 kg |
| Country of Origin | Germany |
| Certifications | CE |
