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Transformer Station
The SES2H-2580/3450-MV-NA Integrated MV Transformer Station is a heavy-duty, turnkey power transformation solution designed specifically for grid-scale energy storage systems (BESS) and utility solar projects. By consolidating 1500V high-density PCS modules, a medium-voltage oil-immersed transformer (11kV–33kV), motorized circuit breakers, and protection systems into a compact 20ft container footprint (6058*2896*2438mm), this factory pre-commissioned MV Skid drastically cuts on-site installation time, civil engineering expenses, and overall project CapEx.
Features
Flexible Configuration
- Integrated inverter and booster, highly compact
- Improves space efficiency, easier installation
- Modular, configurable power
High Efficiency & Stability
- 1500V wide-range DC voltage
- Multi-branch DC design prevents battery looping currents
Intelligent Collaboration
- Automated peak shaving operation
- VSG/ PQ/VF mode capabilities
- Islanding, black start capable
Safety & Compatibility
- With LVRT and HVRT
- 4-quadrant active and reactive power control
- Fast power response (<10ms)
Products Description
| LV EQUIPMENT | |
| Nominal power | 2580kVA/3450kVA |
| DC voltage range | 1000~1500V |
| Full load voltage range | 1070~1500V |
| Number of DC branches | 2*1/4/8 |
| Maximum DC current | 2*1248A/1664A |
| Voltage regulation accuracy | ≤±1% |
| Current regulation accuracy | ≤±1% |
| MV EQUIPMENT | |
| Nominal AC power | 2580kVA@40°C |
| PCS embedded | 2* PWS1-1725KTL-NA (6/8 Modules) |
| Transformer Vector | Oil-immersed transformer |
| Transformer protection | Protection relay for pressure, temperature (two levels). |
| Oil retention tank | Galvanized steel. Integrated with hydrocarbon filter. Optional |
| AC connection | Dy1 (Consult with Sinexcel for customized) |
| Overload capability | 100% |
| MV AC voltage | 11kV-33kV (Consult with Sinexcel for other voltage level) |
| LV AC voltage | 690V(-5%~5%)V (Consult with Sinexcel for other voltage level) |
| AC frequency | 50/60 (-1~1) Hz |
| Transformer impedance | 5.75%~8% |
| Cooling type | KNAN |
| THDi | ≤3% |
| AC PF | -0.9~0.9 |
Turnkey All-in-One MV Skid
As a complete turnkey solution, our Integrated 1500V PCS MV Transformer Station combines high-density power conversion and medium-voltage step-up capabilities within a single heavy-duty, transportable frame. We factory-assemble and pre-commission the entire MV skid before shipping, which eliminates complex on-site wiring and minimizes civil construction needs. This streamlined approach allows project developers and EPC contractors to drop the unit onto a basic concrete pad, connect the DC inputs and grid lines, and get utility-scale solar or energy storage sites up and running with minimal downtime and lower overall installation costs.
FAQ
Q: How does the multi-branch DC design protect battery system health?
A: The system features a 2*1/4/8 DC branch structure that segregates separate battery racks. This multi-branch topology prevents cross-looping currents between parallel battery strings, reducing capacity degradation, eliminating circulating energy losses, and extending overall battery pack lifespan.
Q: What protection systems are included for the oil-immersed transformer?
A: The transformer features comprehensive dual-level protection relays monitoring internal pressure and temperature. Medium-voltage protection is handled by high-interrupting MV fuses, while low-voltage inputs utilize motorized circuit breakers.
Q: How is the internal equipment protected in high-salinity or coastal locations?
A: The containerized enclosure is rated to IP54 ingress protection and finished with a C4-class heavy industrial anti-corrosion coating system.
Q: What SCADA protocols are natively supported for plant-level integration?
A: The unit includes RS485, Ethernet, and CAN communication hardware interfaces. It natively supports standard industrial protocols, including Modbus TCP/RTU and CANopen, allowing simple integration into plant-level Power Plant Controllers (PPC) and EMS/SCADA platforms.
Q: How are internal maintenance access and component replacements handled on-site?
A: The containerized structure features wide-opening access doors with mesh security barriers around the transformer section. PCS modules are slide-in/slide-out modular designs, allowing single technician crews to service or swap power modules.
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