SolaX X3-ULTRA-25K 25kW C&I Hybrid Inverter 3-phase AFCI

The 3-phase X3-ULT-25K from SolaX (MPN: 1010140022) is a hybrid inverter for professional use in the C&I sector. With a rated power of 25kW, three independently operating MPP trackers, and a wide MPPT range (120-950V), the system enables flexible design of large PV systems. It can be combined with various SolaX batteries. The robust input architecture allows you to feed in up to 200% of the PV power. With intuitive control and full VPP compatibility, your system is optimally prepared for future energy supply requirements. The parallel connection of up to ten devices—grid-parallel and off-grid—allows for customized large-scale projects.

Product highlights of the X3-ULTRA

• 3 MPP trackers with ultra-wide MPPT range of 120-950 V
• 200% PV oversizing and up to 110% AC power
• Up to 10 inverters in parallel operation, ON- and OFF-Grid
• Intelligent shade and load management
• Optimized for high-performance solar modules
• Up to 200% EPS power for 10s
• Switchover time at UPS level, <10 ms
• 0.3s response time to load changes
• Type II SPD on AC&DC side, AFCI protection
• Individual operating modes, versatile operation
• Low start-up voltage for longer operation
• VPP-ready with different providers and protocols
• Simplified cabling and installation
• Manufacturer product warranty: 5 years, information can be found here

200% PV oversizing, 110% AC power

Thanks to robust PV input architecture and a maximum of 36 A per tracker, high-performance modules and strings with increased current can be easily integrated. Up to 200% oversizing on the DC side ensures stable system performance even with low solar radiation. In the short term, the AC power output is up to 110% of the inverter's rated power in order to make use of PV yield peaks.

Virtual power plant connection (VPP-ready)

The VPP capability of the X3 Ultra enables integration into virtual power plants (VPP). Here, decentralized energy sources such as photovoltaic systems, battery storage, and flexible consumers are digitally combined into a controllable network, aggregated, and externally controlled. In this way, systems can participate jointly in the energy market in a targeted manner, provide balancing energy, compensate for peak loads, and contribute to stabilizing the power grid in the C&I sector.

Flexible storage integration, fast switching

Compatible with SolaX high-voltage batteries (120–800 V). Maximum charging and discharging rate of 60 A each. Uninterrupted switching to EPS takes less than 10 ms, ensuring seamless operation of critical loads in the event of a power failure. The integration of a generator to form a microgrid reduces downtime.

Various modes

In on-grid operation, the inverter offers you 6 different operating modes. This allows you to select the mode that best suits your energy needs. In the event of a power failure in the public grid, the inverter automatically switches to EPS mode (emergency power supply). This ensures that your connected consumers continue to be reliably supplied with energy.

Own consumption – use your solar power for your household appliances first. Surplus energy charges the battery, and only then is electricity fed into the grid. This allows you to effectively save costs when electricity prices are high and feed-in tariffs are low.
Feed-in priority – ideal when feed-in tariffsare high. Your PV system first supplies your consumers, and surplus electricity is fed into the grid and remunerated.
Backup – keeps the battery sufficiently charged at all times so that important devices continue to run reliably in the event of a power failure. This is particularly suitable for regions with frequent power failures.
Peak shaving - charges the battery when power consumption is low and releases energy when the load is high. This reduces peak loads and saves electricity costs.
TOU (Time-of-use) - is set via the SolaXCloud app or web interface. You can assign up to 10 time slots per day with different operating modes such as self-consumption, peak shaving, charging, or discharging. This allows you to flexibly adapt your system to your needs and electricity tariffs.
Manual mode - is intended exclusively for qualified personnel for maintenance and troubleshooting. Here, specific functions such as forced discharging, charging, or charging stop can be activated. After 6 hours, the system automatically switches back and exits manual mode.

SolaXCloud

SolaXCloud is an intelligent platform for managing your home energy. It offers you clear monitoring of your energy consumption and electricity generation, as well as easy control of all connected devices. This allows you to optimize the efficiency of your electricity consumption and get the most out of your solar system. Your data is transmitted securely and reliably at all times. You can also conveniently download the app directly. Instructions for this can be found in the user manual.

Protection and safety

• Overvoltage/undervoltage protection
• AC overcurrent protection, AC short-circuit protection
• DC insulation protection, DC reverse polarity protection, DC feed-in monitoring
• Grid monitoring
• Regenerative power monitoring
• Fault current detection
• Overtemperature protection

Technical data

PV input

• Max. recommended PV power: 50000 kWp
• Max. PV input voltage: 1000 V
• Nominal PV input voltage: 600 V
• Operating voltage range: 120 - 950 V
• MPPT voltage range: 160 - 950 V
• Start voltage: 200 V
• Number of MPPT: 3
• Number of strings per MPPT: 2/2/2
• Max. input current: 36 A / 36 A / 36 A (per MPPT)
• Max. short-circuit current: 45 A / 45 A / 45 A (per MPPT)

AC input and output (grid-connected operation)

• Nominal output power: 25000 W (VDE4105 24900 W)
• Nominal output current: 36.3 A
• Max. apparent output power: 27500 VA (VDE4105 24900 VA)
• Max. output current: 39.9 A (VDE4105 36.3 A)
• AC rated voltage: 3/N/PE, 220/380 V, 3/N/PE, 230/400 V
• Max. AC input apparent power: 25 kVA
• Max. AC input current: 36.3 A
• AC rated frequency: 50/60 Hz

Battery

• Battery type: Lithium
• Battery voltage range: 120-800 V
• Max. charging and discharging current: 60 A (30 A x2)

EPS output (with battery) Off-grid operation

• EPS output voltage, frequency: 230/400 V, 50/60 Hz
• EPS rated output power: 25000 VA
• EPS peak output power: 2x rated power for max. 10 s
• Switchover time: <10 ms

General data

• Max. efficiency: 98%
• European efficiency: 97.7%
• Cooling concept: Intelligent cooling
• Operating temperature range: -35°C to +60°C (power reduction from 45°C)
• Protection class: IP66
• Weight: 47 kg
• Dimensions: 696 x 526 x 240 mm

Scope of delivery

1x SolaX X3-ULTRA-25K 25kW C&I hybrid inverter, 3-phase AFCI
1x mounting bracket
1x dongle
Includes mounting and installation accessories