FLYFINE · FH-3000 / FH-3500 / FH-4200

500V PV Off-Grid Inverter for 24V Battery Systems

The FLYFINE FH-3000, FH-3500 and FH-4200 offer 3kW, 3.5kW and 4.2kW rated output options. This off-grid hybrid inverter series combines pure sine wave AC output, integrated MPPT solar charging and AC charging for compatible 24V battery systems.

The series supports a maximum PV input voltage of 500VDC and an MPPT operating range of 60–450VDC. Lithium battery support, an activation function, LCD display and RS485 communication support system setup and operation.

FH-3000 3kW Maximum PV input: 3.5kW
FH-3500 3.5kW Maximum PV input: 4kW
FH-4200 4.2kW Maximum PV input: 4kW

Key Features

500V Maximum PV Input

A 60–450VDC MPPT range supports compatible solar string configurations. Maximum PV input voltage is 500VDC; check module open-circuit voltage and temperature effects during design.

Pure Sine Wave Output

Select single-phase 220VAC, 230VAC or 240VAC output to match compatible loads. Peak conversion efficiency is specified at 93%.

Lithium Battery Support

The series supports lithium batteries and includes a battery activation function. Confirm battery voltage, charging settings and communication compatibility before installation.

LCD Display and RS485

A built-in LCD provides a local interface for system operation. RS485 communication supports integration with compatible equipment.

Model Specifications

Rated Output and Maximum PV Input Power
Model Rated Output Max. PV Input
FH-3000 3kVA / 3kW 3.5kW
FH-3500 3.5kVA / 3.5kW 4kW
FH-4200 4.2kVA / 4.2kW 4kW

Common Technical Parameters

24V Battery System · 500V Maximum PV Input
Parameter Specification
Battery System Voltage 24VDC
AC Output in Battery Mode Single-phase 220 / 230 / 240VAC selectable, ±5%
Output Waveform Pure sine wave
Peak Conversion Efficiency 93%
Switchover Time 10ms (Home) / 20ms (PC), as listed in the datasheet
Battery Float Voltage 27VDC
Battery Overvoltage Protection 33VDC
MPPT Voltage Range 60–450VDC
Maximum PV Input Voltage 500VDC
Maximum Solar Input / Charge Current 18A / 80A
AC Input Voltage 230VAC
AC Input Voltage Range 90–280VAC (Home appliance) / 170–280VAC (PC)
AC Input Frequency 50Hz / 60Hz adaptive
Maximum AC Charge Current 40A / 60A; confirm the applicable configuration
Communication RS485
Display LCD
Weight 9kg
Packaging Size 420 × 315 × 145mm (L × W × H)
Operating Temperature 0°C to 50°C
Storage Temperature −30°C to 70°C
Relative Humidity 5%–95%, non-condensing
IP Rating IP21

Specifications follow the linked datasheet and are subject to change. Packaging dimensions are not installation dimensions. Confirm the final charging configuration, battery compatibility and mounting requirements when ordering.

Applications

Off-Grid Solar Power

Combine compatible solar modules and a 24V battery system to supply selected loads in off-grid installations. Match PV strings and battery capacity to the site requirements.

Backup Power Systems

Pair the inverter with a compatible battery to support selected loads when AC input is interrupted. Backup duration depends on battery energy, load demand and conversion efficiency.

System Selection and Installation

  • Select the rated output: Choose 3kW, 3.5kW or 4.2kW according to continuous load demand and confirm starting-load requirements.
  • Design the PV string: Check maximum input power, voltage and current. Allow for cold-weather module open-circuit voltage when checking the 500V maximum input limit.
  • Match the battery system: Confirm the compatible 24V-class battery, charging settings, current capability and communication requirements.
  • Confirm battery-free operation: The datasheet lists operation without a battery. Verify the required PV/AC conditions and load limitations before selecting this mode.
  • Use a protected location: Plan an indoor installation suitable for IP21, with appropriate ventilation, clearances, wiring and protective equipment.

Frequently Asked Questions

Does 500V refer to the battery voltage?

No. It is the maximum PV input voltage. The battery system voltage is 24VDC. The MPPT operating range is 60–450VDC.

How does this differ from the 160V PV series?

This series supports a maximum PV input voltage of 500VDC, a 60–450VDC MPPT range and maximum PV input power of 3.5kW or 4kW, depending on model. Select the inverter according to the planned PV string and load requirements.

Does the system include a storage battery?

This product is an inverter with integrated charging functions. Battery capacity depends on the compatible external battery selected for the installation.

Can it be used with lithium batteries?

The datasheet lists lithium battery support and an activation function. Confirm the exact battery model, voltage range, charging settings and communication compatibility with FLYFINE.

Can it operate without a battery?

Independent operation without a battery is listed in the datasheet. Confirm the supported operating conditions and load requirements before installation.

Request a 500V PV Off-Grid Inverter Quote

Send FLYFINE your preferred model (FH-3000, FH-3500 or FH-4200), quantity, destination market, load requirements, battery model and planned PV configuration. Our team can confirm the suitable configuration and provide a quotation.