Technical Data Sheet: Siemens 6RA2877-6DS21-0
SIMOREG K 6RA28 Series Fully Digital DC Converter
| Parameter | Value |
|---|---|
| Product Type | SIMOREG K 6RA28 Series Fully Digital DC Converter |
| Order Number | 6RA2877-6DS21-0 |
| Quadrant Operation | Single-Quadrant (1Q), Non-reversing |
| Rated DC Current (Id) | 250 A |
| Rated DC Voltage (Vd) | 485 V |
| Rated Supply Voltage | 3-phase AC 400V (+15% / -20%) |
| Rated Frequency | 45 – 65 Hz (Auto-sensing) |
| Typ. Motor Power (at 400V) | 121 kW |
| Power Loss (at rated current) | Approx. 800 W |
| Exciter Circuit | Single-phase uncontrolled bridge |
| Rated Exciter DC Voltage | 340 V |
| Rated Exciter DC Current | 15 A (Max 25 A) |
| Protection Class | IP00 |
| Ambient Temp (Rated Operation) | 0 °C to +45 °C (Forced cooling required above 35°C) |
| Weight | Approx. 23 kg |
| Cooling Method | Forced air cooling (integral fan) |
| Fan Ratings | 95W, 0.24A, 570 m³/h airflow |
