Inverter – SOLAX – X3-ULT-15KP – hybrid – AFCI – HV

X3-ULTRA

X3-ULTRA is a series of three-phase transformerless inverters designed to work with photovoltaic installations and lithium-ion batteries. It supports grid-tied operation and EPS emergency power with a battery, with a switching time below 10 ms. Maximum efficiency reaches 98.0%, and MPPT tracking efficiency reaches 99.9%.

Main advantages of X3-ULTRA

• Rated AC apparent power 15–30 kVA and maximum DC input power 30–60 kW, depending on the model.
• 2–3 MPPT trackers, depending on the model, with two panel strings per MPPT and a voltage range of 160–950 V.
• Support for lithium-ion batteries with voltage 180–800 V and maximum charging/discharging current 60 A (2 × 30 A).
• EPS emergency power with battery: rated power 15–30 kVA depending on model, peak power equal to twice the rated power for 10 seconds, and switching time below 10 ms.
• Ingress protection IP66 and operating temperature range from −35 to +60°C, with power derating above +45°C.
• Electrical protections: anti-islanding protection, DC reverse polarity protection, AC short-circuit and overcurrent protection, overheat protection, and Type II surge protection on DC and AC sides.

Who is this a good choice for?

X3-ULTRA is aimed at owners of photovoltaic systems who want to combine grid-tied operation with the use of lithium-ion batteries. For users needing emergency power it provides an EPS output with a battery and switching below 10 ms. The rated AC apparent power range of 15–30 kVA allows selecting the variant matching the system power requirements.