en.Wedoany.com Reported - US solar manufacturer Sol-Ark has launched a hybrid inverter called the Limitless 12K-2P-LL, a transformerless DC system manufactured in Texas. It features a three-MPPT architecture, with each MPPT supporting two strings, designed to enhance power generation performance in complex rooftop scenarios.
The inverter allows a maximum photovoltaic input power of 19,200W and is compatible with large solar arrays and modern high-power modules. When connected to the grid or a load, the device provides a continuous AC output of 12kW; off-grid peak surge capacity is 24kW (for 10 seconds); for standalone battery applications, the maximum continuous AC output is 10kW. The system integrates a 100A continuous AC pass-through function, enabling direct connection to larger backup load panels without external contactors. It also features a dedicated "GEN" port that supports external AC power sources up to 14kW (such as generators, microinverters, or AC-coupled sources) without requiring an external transfer switch.
As a 48V low-voltage system, its battery input architecture is compatible with lead-acid and lithium-ion batteries, with a capacity range of 50Ah to 9,900Ah and a maximum charge/discharge current of 220A. Sol-Ark states that the inverter achieves a grid-to-battery charging efficiency of 96% and an overall maximum efficiency of 97.6%. To expand energy storage or power requirements, up to 12 units can be stacked in parallel.
The inverter has an enclosure protection rating of IP65/NEMA 3R, dimensions of 654mm × 452mm × 254mm, and weighs 29.5kg. It uses intelligent air cooling and operates in an ambient temperature range of -40°C to 60°C, with automatic derating above 45°C. Safety features include integrated PV DC disconnection, ground fault detection, rapid shutdown control, arc fault detection (AFCI), and AC and DC Type II surge protection.
The product complies with major North American standards, including UL1741 3rd Edition SB, UL1741 CRD-PCS, IEEE1547-2018, and Hawaiian Electric SRD V2.0, and achieves interoperability via IEEE2030.5. Sol-Ark offers a standard 10-year warranty for this hybrid inverter.
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