From 2500 kW to 5000 kW, the SW-2500K-UD, SW-3450K-UD, and SW-5000K-UD are medium-voltage grid-forming energy storage units with built-in step-up transformers — ready for direct connection to 6–35 kV grids in large-scale microgrid and grid-side projects.
The UD series is a compact, all-in-one power conversion platform for large-scale energy storage. Each model — SW-2500K-UD, SW-3450K-UD, and SW-5000K-UD — delivers 2500 kW, 3450 kW, or 5000 kW of rated output and comes with an integrated step-up transformer (2500–5000 kVA, 0.69/6–35 kV, DY11), allowing the unit to tie directly into medium-voltage grids from 6 kV to 35 kV. Merging the PCS and transformer into one enclosure reduces land use, transport effort, and project cost while increasing power density.
On the DC side, the series operates on a 1500 V architecture with a wide voltage window and supports grid-forming modes such as VF, PQ, and VSG. Multiple units can run in parallel off-grid with black-start capability, extending deployments from tens to hundreds of megawatts. The cabinets are protected to IP54/IP55 for reliable performance in cold, hot, and high-salinity environments, with coordinated multi-layer protection for system safety. For integration, CAN/RS485/Ethernet plus Modbus, IEC 104, and IEC 61850 protocols enable remote monitoring and smooth connection to large-scale energy management systems.
| Modèle | SW-2500K-UD | SW-3450K-UD | SW-5000K-UD |
| AC Side Parameters | |||
| Rated Output Power [kW] | 2500 | 3450 | 5000 |
| Rated Output Voltage [kV] | 6~35 | ||
| Rated Output Frequency [Hz] | 50/60 | ||
| Facteur de puissance | 1 (0.9 Leading~0.9 Lagging) | ||
| Transformer Parameters | |||
| Rated Capacity [kVA] | 2500 | 3450 | 5000 |
| Voltage Transformation Ratio[kV/kV] | 0.69/6~35 | ||
| Connection Group | DY11 | ||
| Transformer Type | Dry Type/Oil-immersed | ||
| Paramètres généraux | |||
| Protection contre les infiltrations | IP54/IP55 | ||
| Méthode de refroidissement | Refroidissement par air | ||
| Humidité relative | 0~95%, Non-condensing | ||
| Operating Temperature [℃] | -20~+50 | ||
| Altitude [m] | 4000（>2000 Derating) | ||
| Communication | CAN/RS485/Ethernet | ||
| Communication Protocol | Modbus/IEC104/IEC61850 | ||
| Weight [T] | ≈16 | ≈17 | ≈22.5 |
| Dimension(W*D*H) [mm] | 6058*2438*2896 | 12192*2438*2896 | |
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