Growatt WIT 28–55K-HU-US L2 Commercial Hybrid Inverter – 208/220V Three-Phase
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Description
Description
The Growatt WIT 28–55K-HU-US L2 Series is a high-performance commercial three-phase hybrid inverter designed for solar PV, high-voltage battery storage, backup power, peak shaving, and energy management applications.
Available in 28kW, 35kW, 40kW, and 55kW models, the WIT L2 series supports 208/220V three-phase systems, high PV oversizing, 380–650V battery storage, UPS operation, black start, generator control, and 100% unbalanced backup loads.
Key Features
- 28kW / 35kW / 40kW / 55kW models
- 208/220V three-phase AC output
- Up to 108kW recommended PV input
- Up to 10 independent MPPT trackers
- 800V maximum PV input voltage
- 180–600V MPPT operating range
- 380–650V high-voltage battery range
- Up to 62.3kW battery charge/discharge power
- 100% unbalanced backup load support
- 110% continuous AC overload capability
- 20ms grid-to-backup transfer time
- UPS and black-start capability
- Remote diesel generator control
- 98% maximum efficiency
- IP66 protection rating
- RS485 / CAN communications
- Scalable system configuration up to 165kW
Model Specifications
| Model | AC Output | Recommended PV | MPPTs | Battery Power |
|---|---|---|---|---|
| WIT 28K-HU-US L2 | 28kW | 54kW | 5 | 31.7kW |
| WIT 35K-HU-US L2 | 35kW | 75.6kW | 7 | 39.7kW |
| WIT 40K-HU-US L2 | 40kW | 86.4kW | 8 | 45.3kW |
| WIT 55K-HU-US L2 | 55kW | 108kW | 10 | 62.3kW |
Commercial Solar + Battery Storage
With multiple MPPT trackers and high PV input capacity, the Growatt WIT L2 series is ideal for commercial projects that require maximum solar utilization while integrating battery storage.
The inverter supports a 380–650V DC battery operating range with a recommended battery voltage of 512V, making it suitable for compatible commercial high-voltage battery systems.
Reliable Commercial Backup Power
The HU-US L2 models feature separate grid and emergency backup AC ports, allowing automatic on-grid/off-grid transfer. The system supports 100% three-phase unbalanced backup loads, UPS functionality, and black start for enhanced energy resilience.
Ideal Applications
Perfect for:
- Commercial solar + battery systems
- Warehouses and industrial facilities
- Farms and agricultural operations
- Retail and office buildings
- Peak shaving and demand management
- Solar self-consumption
- Emergency backup power
- Microgrids
- Generator-assisted energy systems
The Growatt WIT 28–55K-HU-US L2 provides a flexible and scalable solution for businesses looking to reduce energy costs, maximize solar production, and add reliable commercial battery backup.
Shipping & Returns
Shipping & Returns
- Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
- Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
- If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.
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Talk to Our Solar Experts
Have questions about this system? Our solar specialists are here to help you choose the right setup for your needs. Whether you need sizing guidance, installation support, or bulk pricing, we're ready to assist.