3KW String Inverter
Compact Power. Smart Efficiency.
Perfect balance of performance and simplicity for home solar systems.
The Feston 4KW Enfield Series offers Highly-efficient, compact, and grid compatible— reliable solar conversion with smart monitoring and robust protection. Ideal for homes and small businesses.
- Up to 97.5% efficiency.
- 1 MPPT tracker, wide range (70–500V)
- Low start-up voltage: 80V
- Zero export & VSG support
- Anti-PID function, IP65 protection
- Natural cooling
- 10-year warranty
Product Specification
| Model | FE-1.5-1P-0G | FE-2.2-1P-0G | FE-2.7-1P-0G | FE-3.1-1P-0G | FE-3.3-1P-0G | FE-3.6-1P-0G | FE-4.0-1P-0G |
|---|---|---|---|---|---|---|---|
| Input Side | |||||||
| Max. DC Input Power (kW) | 2 | 2.9 | 3.5 | 3.9 | 4.3 | 4.7 | 5.2 |
| Max. DC Input Voltage (V) | 550 | ||||||
| Start-up DC Input Voltage (V) | 80 | ||||||
| MPPT Operating Range (V) | 70–500 | ||||||
| Max. DC Input Current (A) | 20 | ||||||
| Max. Short Circuit Current (A) | 30 | ||||||
| No. of MPPT Trackers | 1 | ||||||
| No. of Strings per MPPT Tracker | 1 | ||||||
| Output Side | |||||||
| Rated Output Power (kW) | 1.5 | 2.2 | 2.7 | 3.3 | 3.3 | 3.6 | 4.0 |
| Max. Active Power (kW) | 1.65 | 2.42 | 2.97 | 3.3 | 3.63 | 3.96 | 4.4 |
| Max. Apparent Output Power (kVA) | 1.65 | 2.42 | 2.97 | 3.3 | 3.63 | 3.96 | 4.4 |
| Rated Output Voltage/Range (V) | 3L/N/PE, 220/380V, 230/400V ±0.85Un (may vary with standards) | ||||||
| Rated Grid Frequency (Hz) | 50 | ||||||
| Phase | Single Phase | ||||||
| Rated AC Grid Output Current (A) | 7.2 | 10.5 | 11.7 | 13.4 | 15.8 | 17.2 | 19.2 |
| Output Power Factor | 0.8 leading to 0.8 lagging | ||||||
| Total Harmonics Current Distortion (THDi) | <3% | ||||||
| DC Injection Current (mA) | <0.5% | ||||||
| Grid Frequency Range (Hz) | 45–55 | ||||||
| Efficiency | |||||||
| Max. Efficiency | 97.3%–97.5% | ||||||
| Euro Efficiency | 97.1%–97.3% | ||||||
| MPPT Efficiency | >99% | ||||||
| Protection | |||||||
| DC Reverse-Polarity Protection | Yes | ||||||
| AC Short Circuit Protection | Yes | ||||||
| AC Output Overcurrent Protection | Yes | ||||||
| Leakage Current Protection | Yes | ||||||
| Output Overvoltage Protection | Yes | ||||||
| Insulation Resistance Protection | Yes | ||||||
| Ground Fault Monitoring | Yes | ||||||
| Anti-Islanding Protection | Yes | ||||||
| Temperature Protection | Yes | ||||||
| Integrated DC Switch | Optional | ||||||
| Surge Protection | DC Type II / AC Type II | ||||||
| General Data | |||||||
| Size (mm) | 280W × 275H × 175D (Excluding connectors & brackets) | ||||||
| Weight (kg) | 4.8 | ||||||
| Topology | Transformerless | ||||||
| Internal Consumption | <1W (Night) | ||||||
| Running Temperature | -25°C to +60°C; >45°C derating | ||||||
| Ingress Protection | IP65 | ||||||
| Noise Emission (Typical) | <35 dB | ||||||
| Cooling Concept | Natural Cooling | ||||||
| Operating Surroundings Humidity | 0–100% | ||||||
| Max. Operating Altitude Without Derating | 2000 m | ||||||
| Warranty | 10 Years | ||||||
| Compliance | IEC 61727, IEC 62116, IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 | ||||||
| Features | |||||||
| Display | LCD1602 | ||||||
| Interface | RS485 / RS232 / WiFi / GPRS | ||||||