Outdoor Cabinet ESS 2500-5000kW

The SW-2500K-UD, SW-3450K-UD, and SW-5000K-UD are medium-voltage grid-forming energy storage power conversion systems rated 2500–5000 kW, with integrated step-up transformers for 6–35 kV grid connection — built for large-scale microgrid and grid-side energy storage.

Parameter	SW-2500K-UD	SW-3450K-UD	SW-5000K-UD
Rated Output Power	2500 kW	3450 kW	5000 kW
Rated Output Voltage	6~35 kV
Transformer Capacity	2500 kVA	3450 kVA	5000 kVA
Reference Weight	≈ 16 t	≈ 17 t	≈ 22.5 t

The UD series is a range of highly integrated, medium-voltage energy storage power conversion systems designed for large-scale microgrid, grid-side, and PV+ESS applications. The SW-2500K-UD, SW-3450K-UD, and SW-5000K-UD deliver rated output power of 2500 kW, 3450 kW, and 5000 kW respectively, each with a matching step-up transformer (2500–5000 kVA, 0.69/6–35 kV, DY11) for direct connection to 6–35 kV grids. The integrated design delivers high power density while reducing footprint, transport, and land costs.

Built on a 1500 V DC architecture with a wide DC voltage range, the UD series supports multiple operating modes including VF, PQ, and VSG, and enables off-grid multi-unit parallel operation with black-start capability — suitable for off-grid applications from tens to hundreds of megawatts. High ingress protection (IP54/IP55) ensures reliable operation in cold, hot, and high-salinity environments, while coordinated multi-layer protection enhances system safety. Communication via CAN/RS485/Ethernet with Modbus, IEC 104, and IEC 61850 protocols supports remote monitoring and seamless integration into large-scale energy management systems.

Model	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
Power Factor	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
General Parameters
Ingress Protection	IP54/IP55
Cooling Method	Air Cooling
Relative Humidity	0~95%, Non-condensing
Operating Temperature [C]	-20~+50
Altitude [m]	4000（>2000 Derating)
Communication	CAN/RS485/Ethernet
Communication Protocol	Modbus/IEC104/IEC61850
Weight [T]	≈16	≈17	≈22.5
Dimension(WDH) [mm]	605824382896		1219224382896

ABOUT SUNWAY

Sunway Solar, established in 2016, is a pioneering photovoltaic technology trading company offering a comprehensive range of solar products (panels, inverters, batteries, mounting systems) and one-stop energy storage power solutions. Certified with CE, TUV, RoHS, and UL, we professionally design systems from 300W to 1MW, provide on-site installation guidance by engineers, and ensure fast delivery with high-quality after-sales support through our 2024-established European branch with a warehouse in the Netherlands, covering markets across the Americas, Europe, Middle East, Africa, and Southeast Asia.