Specialized Medium/Low Voltage (10kV/0.4kV) distribution solutions engineered to optimize the power stability and energy conversion efficiency of Battery Energy Storage Systems (BESS). Our designs focus on ultra-low loss, resilience to the harsh operating environments of storage sites, and seamless adaptation to the frequent fluctuations of charge-discharge cycles.
Core Value Propositions
Adaptation to Fluctuating Charge-Discharge Loads
BESS loads are characterized by extreme volatility, involving frequent switching between charging and discharging modes and multi-unit cluster coordination. Our transformers feature wide-range load regulation capabilities, perfectly matching the "high dynamic power and frequent mode switching" nature of storage systems, effectively preventing light-load losses or overload failures.Extreme Environmental Resilience
From outdoor centralized storage plants to indoor distributed battery rooms, equipment faces high temperatures, humidity, dust, and significant Electromagnetic Interference (EMI). We utilize C5-M marine-grade anti-corrosion coatings and fully sealed enclosures with debris-proof cable entries to shield the core components from environmental degradation.Maximizing ROI through OPEX Reduction
Storage projects are highly sensitive to energy conversion costs. Our transformers utilize Tier 1 High-Efficiency designs, drastically reducing electricity waste during idle and peak operation. This directly lowers the long-term operational expenses (OPEX) for operators and improves the overall economic viability of the BESS project.
Specialized Product Portfolio
We provide a comprehensive range of hardware tailored for diverse storage scales, from distributed residential units to massive grid-scale plants
S22 Series Energy Storage Transformer (Oil-Immersed Upgrade)● Voltage Rating up to 10kV / 2000kVA
● Wide Load Regulation Capability
● Dust-Resistant / Foreign Object Protection
● Ideal for Large-Scale Centralized Energy Storage Stations
D11 Series Single-Phase Distribution Transformer● Single-Phase Power Supply / Compact Design
● Capacity Range: 5kVA–50kVA
● Voltage: 220V / 10kV
● Pole-Mounted for Small Distributed or Residential Energy Storage Systems
SCB14 Series Resin-Insulated Dry-Type Transformer● Fire-Resistant / Low Noise
● Maintenance-Free Operation
● Moisture-Resistant for High-Humidity Environments
● Ideal for Indoor Energy Storage Rooms and Data Center Applications
Engineered for BESS Performance
We integrate specialized technical features to extend the service life of transformers within the storage grid:
Load-Adaptive Voltage Regulation
Windings integrate an intelligent voltage regulation module that responds in real-time to fluctuations caused by rapid charge-discharge switching. It automatically compensates for voltage deviations with ±0.5% accuracy, protecting battery cells and power conversion systems (PCS).
Load-Decoupled Multi-Circuit Windings
This design allows multiple independent loads—such as charging circuits, discharge output circuits, and station auxiliary power—to connect to a single transformer. The decoupling windings minimize cross-circuit interference and reduce the total number of transformers required on-site.
Reinforced Impulse Insulation
The insulation system is specifically strengthened to withstand the impulse currents generated during the instantaneous transition between power states, catering to the "high-intensity, intermittent" operation of BESS.
Technical Specifications
● LV Interface: 0.22 / 0.38 kV (Matches PCS and auxiliary station facilities)
● MV Interface: 10 kV (Mainstream grid-connection voltage)
● Tapping Range: ±2 × 2.5% (Flexible grid voltage compensation)
● Vector Group: Dyn11 (The standard for harmonic mitigation in storage grids)
● Short-Circuit Impedance: 4.0% - 6.0% (Optimized for short-distance voltage drop)
● Energy Efficiency: Tier 2 or Tier 1 (Compliant with latest international standards)
● Operating Temp: -20℃ to +45℃ (Covers most global climates)
● Maximum Altitude: Up to 1500 meters (Customizable for higher regions)
● Protection Rating: IP54 / C5-M (Resistant to dust, salt spray, and moisture)
FAQ: Integration & Installation
Q: Why choose a dedicated BESS transformer over a standard distribution unit?
A: Standard transformers are not designed for the rapid bidirectional power flow and harmonic stress of a BESS. Our dedicated solution provides a "one-stop" integration of the transformer, LV switchgear, and protective casing, specifically tuned for the high-frequency switching and EMI challenges of battery networks.
Q: How does the "One-Stop" solution speed up project deployment?
A: By housing the transformer and high/low voltage compartments in independent, prefabricated protective cabins, we eliminate the need for complex on-site assembly. The unit arrives factory-tested and ready for immediate cable connection, significantly shortening the construction cycle of the energy storage plant.
