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FGH Series 3–6kW Off-Grid Solar Inverter
FGH Seriesis a single-phase off-grid solar inverter combining inverter, MPPT solar charging and AC battery charging in one compact unit.
Available in 3 kW, 3.6 kW, 5 kW and 6 kWmodels for residential, commercial and remote power applications.
Flexible energy management:Solar, utility and battery priority modes adapt the system to different power conditions.
Reliable power output:Pure sine wave output supports household appliances, office equipment and compatible motor loads.
Battery and monitoring flexibility:Supports 48 V lead-acid and lithium batteries, with CAN, RS485, USB, dry contact and optional wireless monitoring.
Scalable operation:Up to 6 unitscan operate in parallel for higher system capacity.
PV array, battery capacity and charging configuration are selected according to the project load.
Applications
Government
Finance
IT
Education
Transportation
Broadcasting
Medical
Energy
Data Parameters
Technical Specifications
| AC Input & Bypass | |
| Rated Input Voltage | 220 / 230 VAC |
| Input Voltage Range | 170–280 VAC for personal computers; 90–280 VAC for home appliances |
| Input Frequency | 50 / 60 Hz, automatic detection |
| Frequency Range | 45–55 ±0.2 Hz at 50 Hz; 55–65 ±0.2 Hz at 60 Hz |
| AC Mode Efficiency | >94% |
| Transfer Time | 10 ms typical, bypass to inverter |
| LN Reverse Protection | Available |
| Overload / Short-Circuit Protection | Circuit breaker |
| Inverter Output | |
| Output Waveform | Pure sine wave |
| Parallel Capability | Yes, maximum 6 units |
| Power Factor | 1.0 |
| Rated Output Voltage | 230 VAC; 200 / 208 / 220 / 240 VAC settable |
| Output Voltage Regulation | ±2% |
| Output Frequency | 50 Hz ±0.3 Hz / 60 Hz ±0.3 Hz |
| Maximum Efficiency | >93% |
| Overload Protection | 105% to below 150% load: output shuts down after 10 seconds; 150% to below 200% load: output shuts down after 5 seconds; Short circuit: output shuts down after 200 ms |
Model Comparison
| Model | FGH03-48H | FGH03.6-48H | FGH05-48H | FGH06-48H |
|---|---|---|---|---|
| Rated Output Power | 3,000 VA / 3,000 W | 3,600 VA / 3,600 W | 5,000 VA / 5,000 W | 6,000 VA / 6,000 W |
| Peak Power | 6,000 VA | 7,200 VA | 10,000 VA | 12,000 VA |
| Motor Load Capability | 2 HP | 2 HP | 4 HP | 5 HP |
| Maximum Bypass Current | 20 A | 20 A | 40 A | 40 A |
| Bypass Breaker | 20 A | 20 A | 40 A | 40 A |
| Maximum AC Charge Current | 60 A | 60 A | 80 A | 100 A |
| AC Charging Breaker | 20 A | 20 A | 40 A | 40 A |
| Maximum PV Input Power | 4,200 W | 4,200 W | 5,000 W | 6,000 W |
| Maximum PV Input Current | 18 A | 18 A | 22 A | 27 A |
| Adjustable PV Charge Current | 0–60 A | 0–60 A | 0–80 A | 0–100 A |
| Dimensions (L × W × D) | 387 × 371 × 125 mm | 387 × 371 × 125 mm | 387 × 371 × 125 mm | 387 × 371 × 125 mm |
| Net Weight | 9 kg | 9 kg | 11 kg | 11 kg |
| Battery & PV Charging | |
| Battery Type | Lead-acid or lithium battery |
| Rated Battery Voltage | 48 VDC; minimum starting voltage 44 VDC |
| Battery Voltage Range | 40–60 VDC ±0.6 VDC |
| Power-Saving Mode | Load ≤40 W |
| AC Charging Voltage | 40–60 VDC |
| Maximum PV Open-Circuit Voltage | 500 VDC |
| PV Operating Voltage Range | 120–500 VDC |
| MPPT Voltage Range | 120–450 VDC |
| Charging Protection | Fuse protection, reverse-polarity protection and overcharge protection |
| Overcharge Protection | Alarm and charging shutdown after one minute |
| Environment, Communication & Certification | |
| Certification | CE, IEC 62109-1 |
| EMC Level | EN 61000, C2 |
| Protection Rating | IP20 |
| Operating Temperature | −15°C to +50°C |
| Storage Temperature | −25°C to +60°C |
| Humidity | 5%–95%, conformal-coating protection |
| Noise | ≤60 dB |
| Altitude | Below 2,000 m |
| Cooling Method | Forced-air cooling with variable-speed fan |
| Communication Interfaces | CAN, USB, RS485 and dry contact; Wi-Fi, 4G and SNMP depending on configuration |