FoxESS - P3-125-PLUS

The FoxESS P3-PLUS hybrid inverter is a three-phase, high-efficiency inverter designed for large commercial and industrial installations with energy storage.  It combines advanced power electronics, extensive safety features, and flexible compatibility with LFP batteries to ensure stable and economical operation of the PV system.

The inverter belongs to the P3 Plus series, which includes devices with power ratings from 50 to 125 kW, dedicated to demanding commercial installations and large-scale photovoltaic systems.  With a high output power and the ability to work with several PV strings and multiple batteries, it is ideal for industrial facilities, logistics centers, farms, and larger public buildings.

The device operates in hybrid mode, which means simultaneous support for PV sources, the grid, and energy storage, with intelligent energy flow management. This allows for maximizing self-consumption, reducing grid consumption, and better utilization of dynamic energy tariffs and discounts.

The P3-PLUS models offers a nominal AC output power allowing for safe oversizing of the PV generator and flexible load control.  The inverter operates in a standard 380/400 V three-phase grid, with the possibility of adjusting the power factor in the range from 0.8 capacitive to 0.8 inductive, which supports grid stability and reactive power compensation.

The device is equipped with 4/8 independent MPPT trackers, each with two inputs, which provides great flexibility in designing chains, working with different roof exposures, and reducing losses resulting from shading.

The P3-PLUS inverter works with high-efficiency lithium iron phosphate (LFP) batteries, offering a battery voltage range from 180 to 950 V.  The device has three independent battery ports with CAN communication, and the maximum total charging/discharging current is 240 A, which allows for intensive operating cycles with high energy storage capacity.

The integrated EPS (Emergency Power Supply) function ensures power backup for priority circuits in the event of a power failure, with a switching time of less than 10 ms, which is virtually imperceptible to most receivers. The manufacturer declares the possibility of long-term power backup – even more than 6 hours – depending on the capacity of the energy storage used.

The P3-PLUS achieves a maximum efficiency of approximately 98.5%, with a European efficiency of 98.5%, thanks to its advanced non-isolated topology and refined power path.  The very high efficiency of the MPPT track (up to 99.9% in the P3 series) translates into efficient use of solar energy, reducing conversion losses even in variable sunlight conditions.

The device is equipped with a comprehensive security package, including a DC input switch, PV and battery reverse polarity protection, AC overload and short-circuit protection, AC/DC surge protection, leakage current and ground fault detection, and AFCI arc flash protection.  The IP65 protection class and intelligent air cooling allow for safe operation in harsh outdoor conditions, at temperatures ranging from approximately -30 to 60°C and high humidity.

The inverter has a color LCD display and LEDs for local viewing of operating parameters and quick diagnosis of possible faults.  Extensive communication interfaces (USB, RS485, Bluetooth, Wi-Fi/LAN, optional 4G and CAN) allow integration with BMS systems, energy meters, and external energy management systems.

Thanks to the FoxCloud V2.0 platform, the user has remote access to installation operating data, historical reports, and alarms, which facilitates service, energy consumption optimization, and ongoing production and storage control. This solution is particularly important in commercial installations, where monitoring multiple energy consumption and generation points is critical to operating costs.

The P3-PLUS has a compact design – the model's dimensions are approximately 730 × 1060 × 305 mm, with a weight of about 120 kg, which facilitates mounting on a wall or suitable support structure.  The non-isolated topology reduces the size and weight of the device while maintaining high efficiency and meeting safety standards.

The operating noise level does not exceed approximately 70 dB, which is acceptable for technical rooms, transformer stations, or industrial interiors. Low power consumption in standby mode (below 60 W) reduces the system's own losses, which brings measurable savings on a large-scale installations on an annual basis.