Internal Reference:
Solis-3250-MV
The Solis-3250-MV is a medium-voltage station for 1500V Solis 350K string inverters, delivered as a 20' HC container with LV panel, 3250 kVA oil-immersed transformer (0.8 kV / 10–35 kV) and MV switchgear for a mainstream 3.25MW subarray. It needs only LV and MV cables connected on site, with full frontal maintenance and modular MV equipment.
Technical Specifications
| Models | Solis-3250-MV |
| MCCB specification | 400 A / 800 Vac / 3P, 10 pcs |
| ACB specification | 3200 A / 800 Vac / 3P, 1 pcs |
| Connection form with transformer | Copper busbar |
| Transformer type | Oil immersed |
| Rated output power | 3250 kVA @ 40°C |
| Max. output power | 3500 kVA @ 30°C |
| LV / MV voltage | 0.8 kV / 10 - 35 kV |
| Max. input current | 2526 A |
| Tapping on HV | ±2 × 2.5% |
| Vector group | Dy11 |
| Frequency | 50 Hz / 60 Hz |
| Cooling type | ONAN |
| Impedance | 7% (± 10%) |
| Oil type | Mineral oil (Optional: plant oil) |
| Winding material | Al / Al (Optional: Cu / Cu) |
| Insulation class | A |
| Connection form with MV switchgear | Cable |
| Type of insulate | SF6 (Optional: SF6-Free) |
| Rated voltage | 12 - 40.5 kV |
| Rated current | 630 A |
| Internal arcing fault | 20 kA / 1 s |
| Qty of feeder | 3 feeders |
| Protection | |
| LV surge protection | AC type I + II |
| AC input protection | Circuit breaker |
| Transformer protection | Oil-temperature, oil-level, oil-pressure |
| Fire protection | Smoke detection, emergency lighting |
| General Data | |
| Dimensions (W × H × D) | 6058 × 2896 × 2438 mm |
| Approximate weight | 14.5 T |
| Operating ambient temperature range | -25 ~ +60°C |
| Max. operation altitude | 2000 m |
| Auxiliary power supply | 5 kVA / 230 V (Optional: max. 50 kVA) |
| UPS | 1 kVA 30 min (Optional: max. 2 kVA 2h) |
| Degree of protection | IP54 |
| Anti-corrosion Class | C4-H (Optional: C5-M) |
| Allowable relative humidity range | 0 - 95% |
| Communication | RS485, Ethernet, Optical fiber |
| Compliance | IEC 60076, IEC 62271, IEC61439 |