Deye SUN-20K-SG05LP3-EU is a high-capacity, three-phase hybrid inverter engineered for residential villas, commercial buildings, and small industrial facilities that demand reliable three-phase power and substantial load capacity. As the industry’s first high-power low-voltage three-phase hybrid inverter, it combines a 20kW rated AC output with 48V low-voltage battery support, making it an ideal solution for both grid-tied and off-grid energy storage systems.

Key Features

High Power Output with Full Unbalanced Capability
Delivering 20kW of rated AC active power and up to 22,000VA maximum apparent power, the SUN-20K-SG05LP3-EU-SM2 supports 100% unbalanced output across all three phases. Each phase can independently deliver up to 50% of the rated power, ensuring stable operation even under severely uneven three-phase loads — a critical advantage for properties where single-phase loads dominate.

Powerful Battery Performance
The inverter supports 48V low-voltage battery configurations with either lead-acid or lithium-ion chemistry, featuring a maximum charging and discharging current of 350A. Its transformer-isolated design provides galvanic isolation for enhanced safety and reliability, while the system self-adapts to the battery management system (BMS) for seamless lithium battery integration. Six configurable time periods allow precise scheduling of battery charging and discharging, enabling users to optimize energy costs based on time-of-use tariffs.

Advanced PV Input Capability
Equipped with two independent MPPT trackers and a maximum PV access power of 40,000W, the inverter allows for significant PV oversizing. The maximum PV input power is 32,000W, and the MPPT voltage range spans 160V to 650V, accommodating a wide variety of panel configurations. With 36A+36A maximum input current per MPPT, the system is compatible with high-current PV modules. MPPT efficiency exceeds 99%, ensuring optimal solar energy harvest.

Rapid Switching and Generator Compatibility
The inverter transitions between grid-tied and off-grid modes within 4 milliseconds, ensuring uninterrupted power supply during grid outages. It also supports storing energy from a diesel generator, providing an additional layer of energy resilience for remote or backup power applications.

Peak Power Capability
For demanding loads such as motor startups or elevator operations, the inverter delivers peak power at twice the rated capacity for up to 10 seconds, providing the surge capability needed for inductive loads and high-inrush applications.

Target Applications

Residential villas with high energy consumption and three-phase power requirements;
Commercial buildings — offices, retail spaces, and small manufacturing facilities;
Off-grid and backup power systems where reliable three-phase power is essential;
Solar retrofits — AC coupling enables integration with existing PV installations;
Diesel generator hybrid systems for remote or unreliable grid locations.