FSolar 14kW Three-Phase Hybrid Solar Inverter

The FSolar 14kW Three-Phase Hybrid Solar Inverter is a powerful and intelligent energy-management solution designed for demanding residential, commercial, agricultural, and industrial solar installations.

With a rated three-phase output of 14,000W, maximum AC output of 15,400W, and support for up to 20,000W of solar-panel input, this inverter efficiently manages energy from solar panels, batteries, the utility grid, and a compatible diesel generator.

The inverter supports both on-grid and off-grid operation, EPS backup output, time-based battery charging and discharging, and high-capacity battery systems. Its IP65 enclosure and wall-mounted design make it suitable for professional solar energy installations.

Powerful 14kW Three-Phase Output

The inverter delivers stable three-phase power at 380V or 400V AC, making it suitable for larger homes, commercial premises, workshops, farms, offices, and industrial equipment.

AC Output Performance

• Rated AC output power: 14,000W
• Maximum AC output power: 15,400W
• Output voltage: 380V / 400V AC, three-phase
• Output frequency: 50Hz / 60Hz
• Maximum continuous AC pass-through current: 50A
• Power factor range: 0.8 leading to 0.8 lagging
• Current harmonic distortion: THD below 3%
• Peak off-grid output: 1.8 times rated power for 10 seconds
• Maximum efficiency: 97.9%
• European efficiency: 96.9%

The high peak-power capability helps support compatible motors, pumps, compressors, and other equipment with demanding startup requirements.

100% Unbalanced Three-Phase Output

The FSolar 14kW inverter supports 100% unbalanced output, allowing different loads to be connected across the three phases without requiring identical consumption on each phase.

Each phase can provide up to 50% of the inverter’s rated output power, offering greater flexibility for installations where electrical loads are not evenly distributed.

Dual MPPT with 20kW PV Input

The inverter includes two independent MPPT trackers, helping maximise solar generation from separate panel strings or arrays with different orientations.

Solar Input Specifications

• Maximum DC input power: 20,000W
• PV input voltage: 650V nominal
• PV operating voltage range: 160V–800V DC
• MPPT operating range: 200V–700V DC
• Full-load DC voltage range: 260V–650V DC
• Startup voltage: 160V DC
• Number of MPPT trackers: 2
• PV strings per MPPT: 2 + 1
• PV input current: 26A + 17A
• Maximum PV short-circuit current: 34A + 20A
• MPPT efficiency: 99.9%

Solar-panel strings must be designed so that the maximum open-circuit voltage remains within the inverter’s permitted input range under all expected temperature and weather conditions.

High-Power Battery Charging and Discharging

The FSolar three-phase inverter supports a low-voltage battery system with strong charging and discharging capability.

Battery Specifications

• Supported battery types: Lithium-ion and lead-acid
• Battery voltage range: 40V–60V DC
• Maximum charging current: 280A
• Maximum discharging current: 280A
• Charging curve: Three-stage charging with equalisation
• Lithium battery charging strategy: Automatic adaptation through the BMS
• Optional external battery temperature sensor
• BMS communication: CAN and RS485

The charging and discharging currents must be configured according to the connected battery manufacturer’s specifications.

Time-Based Energy Management

The inverter supports scheduled battery charging and discharging. Users can configure the system to charge batteries during selected periods and discharge stored energy when required.

This feature is useful for:

• Reducing grid consumption during peak-price periods
• Charging batteries during off-peak hours
• Maximising daytime solar-energy use
• Reserving battery capacity for backup power
• Managing generator charging schedules

Grid, Off-Grid and EPS Operation

The FSolar 14kW inverter supports flexible operating modes for different energy requirements.

Supported Operating Functions

• On-grid operation
• Off-grid operation
• On-grid and off-grid mode switching
• EPS emergency backup output
• Solar energy storage
• Battery backup
• Grid-assisted operation
• Generator-assisted operation

The EPS output helps provide backup power to selected essential loads when the utility supply is interrupted.

Dedicated Generator Input

The inverter includes an independent AC input for a compatible diesel generator. Generator energy can be used to power connected loads and charge the battery system.

This makes the inverter suitable for remote areas, farms, industrial sites, and locations where grid power may be unavailable or unreliable.

Parallel System Expansion

Up to 20 compatible inverter units can be connected in parallel for off-grid operation, allowing the system to be expanded for larger energy requirements.

Parallel installations must use compatible equipment and follow the approved wiring, communication, and programming procedures.

7-Inch Colour Touchscreen

The integrated 7-inch colour touchscreen provides convenient access to important system information and settings, including:

• Solar-panel production
• Battery status
• Grid condition
• Generator status
• Output load
• Energy flow
• Charging and discharging information
• Operating mode
• System alarms and warnings

Integrated System Protection

The inverter includes a comprehensive range of protection functions designed to improve system safety and operational reliability.

Protection Features

• PV input lightning protection
• Anti-islanding protection
• PV string reverse-polarity protection
• Insulation-resistance detection
• Residual-current monitoring
• Output over-current protection
• Output short-circuit protection
• Output over-voltage protection
• Optional PV arc-fault detection

IP65 Weather-Resistant Enclosure

The inverter has an IP65 protection rating, providing resistance against dust and water exposure when correctly installed.

Its smart cooling system, low operating noise, and wide temperature range make it suitable for professional energy-storage installations.

Key Features

• 14kW rated three-phase output
• 15.4kW maximum AC output
• 20kW maximum PV input
• Dual MPPT solar tracking
• 99.9% MPPT efficiency
• 97.9% maximum inverter efficiency
• 40V–60V battery voltage range
• 280A maximum charging current
• 280A maximum discharging current
• Lithium-ion and lead-acid battery support
• CAN and RS485 BMS communication
• 100% unbalanced three-phase output
• Each phase supports up to 50% of rated power
• On-grid and off-grid operation
• EPS emergency backup output
• Independent diesel-generator input
• Generator battery-charging support
• Time-based battery charging and discharging
• Parallel operation for up to 20 compatible units
• 7-inch colour touchscreen
• IP65 protection
• Smart cooling system
• Optional arc-fault detection
• Wall-mounted installation

Technical Specifications

The specification table lists an IP65 enclosure, smart cooling, noise below 45dB, dimensions of 510 × 630 × 290mm, and a weight of 45kg.

Suitable Applications

• Large residential solar systems
• Villas and apartment buildings
• Commercial solar installations
• Offices and retail premises
• Farms and agricultural facilities
• Workshops and warehouses
• Industrial backup power
• Off-grid three-phase systems
• Generator-supported solar systems
• Lithium battery energy-storage systems
• Peak-shaving and scheduled energy management
• Expandable parallel inverter systems