NEWSLETTER
SE 4/6KFG-S1/LV
Features
Excellent Performance
200% PV oversizing, 150% PV usable power
Max. 36A PV inuput current for high-power solar panels
Max. battery charge/discharge current of 140A/160A
Max. 11.5kW utility input power
High Flexibility
Support Lead-acid battery
Independent generator port
Dual output with smart load
Up to 12 pcs in parallel, support 3-phase parallel system（Only 6K model）
Safety and Reliability
IP54 protection rating
Multiple built-in protections，DC/AC Type III SPD
3 year Warranty
Intelligent Function
USB OTG function
Time-Based battery charging/discharging
Built-in Wi-Fi and bluetooth for local and remote monitoring
Single Phase Off-Grid Inverter
Senergy SE 4/6KFG-S1/LV is a single phase off-grid inverter developed for residential solar energy storage, backup power and areas with an unstable utility supply. Available in 4kW and 6kW versions, it integrates PV input, battery charging and discharging, utility bypass, generator access and intelligent load management in one compact system.
The inverter delivers 220V, 230V or 240V single-phase output and supports both 50Hz and 60Hz systems. Its low-voltage battery architecture is compatible with lithium-ion and lead-acid batteries, while the 500V maximum PV input and 60–450V MPPT range provide flexibility when configuring residential solar arrays.
With 200% PV oversizing, 150% usable PV power and a maximum PV input current of 36A, the SE 4/6KFG-S1/LV can accommodate modern high-power solar modules and help improve solar generation during periods of lower irradiation.
Single Phase Off-Grid Inverter Specification
| Model Name | SE 4KFG-S1/LV | SE 6KFG-S1/LV |
| Efficiency | ||
| Max. Efficiency | 95% | |
| PV Input | ||
| Max. PV Usable Power | 6,000W | 9,000W |
| Max. PV Input Voltage | 500V | |
| MPPT Operating Voltage Range | 60V-450V | |
| Start-up Voltage | 60V | |
| No. of MPP Trackers | 1 | |
| No. of Strings per MPP Tracker | 1 | |
| Max. Input Current Per MPPT | 18A | 36A |
| Battery | ||
| Battery Type | Lithium-ion/Lead-acid | |
| Nominal Battery Voltage | 24V/25.6V | 48V |
| Battery Voltage Range | 20-30V | 40-60V |
| Max. Solar Charging Current | 140A | 140A |
| Max. AC Charging Current | 140A | 140A |
| Max. Charging/Discharging Current | 140A/160A | 140A/140A |
| AC Input | ||
| Max. Grid Input Power | 6,000W | 11,500W |
| Max. Input Current | 27.3A | 50A |
| Nominal Voltage | 220V/230V/240V, L+N+PE | |
| Grid Voltage Range | 170V-280V (For UPS), 90V-280V(For Home Appliances) | |
| Nominal Frequency | 50Hz/60Hz | |
| AC Output | ||
| Nominal AC Output Power | 4,000W/4,000VA | 6,000W/6,000VA |
| Nominal Voltage | 220V/230V/240V, L+N+PE | |
| Nominal AC Output Current | 18.2A/17.4A/16.7A | 27.3A/26A/25A |
| Nominal Frequency | 50Hz/60 Hz | |
| Max. Grid Passthrough Power (grid to load) | 4,000W | 9,000W |
| Peak Output Apparent Power | 200% @ 5.5s | |
| THDV | ＜3% @ R Load | |
| Parallel Capacity | Not Support | 12 PCS |
| Transfer Time | 10ms Typical (For UPS) 20ms Typical (For Home Appliances) |
10ms Typical (For UPS) 20ms Typical (For Home Appliances) 50ms Typical(For Parallel Operation) |
| Protection | ||
| Ingress Protection Degree | IP54 | |
| Overvoltage Protection | Yes | |
| Overload Protection | Yes | |
| AC Short Circuit Protection | Yes | |
| Over Temperature Protection | Yes | |
| Surge Protection | DC: Type III, AC: Type III | |
| General | ||
| Communication Interfaces | USB(OTG), RJ45(for BMS,CAN/RS485),RJ45(for Parallel), Dry-Contact, WIFI/LAN(Optional) | |
| Operation Temperature Range | -10°C~55°C | |
| Relative Humidity | 5%~95% | |
| Max. Operating Altitude | 4,000m, (>2,000m derating) | |
| Cooling Method | Smart Cooling | |
| Display | LED+LCD | |
| Mounting | Wall Bracket | |
| Dimensions (W*H*D) | 347mm*445mm*120mm | |
| Certification | EN/IEC62109-1, EN/IEC62109-2,EN/IEC 61000 | |
| Warranty | 3 Years | |
Recommended Applications of Single Phase Off-Grid Inverter
This single phase off-grid inverter is suitable for residential and small distributed energy systems that require solar self-consumption, battery backup or multiple energy inputs.
- Residential solar energy storage systems
- Home backup power during utility outages
- Rural homes with weak or intermittent grid supply
- Off-grid houses, cabins and remote properties
- Solar systems supported by a diesel or gasoline generator
- Critical-load backup for lighting, refrigerators, communication equipment and security systems
- Time-of-use energy management with scheduled battery charging and discharging
- Expandable residential energy systems using parallel 6kW units
Advantages of the Single Phase Off-Grid Inverter
- 4kW and 6kW output options for different residential power requirements
- 200% PV oversizing and 150% usable PV power
- Up to 36A PV input for high-power solar modules
- Compatible with lithium-ion and lead-acid batteries
- Maximum battery charge/discharge current of 140A/160A
- Independent generator port for extended backup power
- Dual outputs with smart-load management
- 200% peak output capacity for 5.5 seconds
- Typical 10ms transfer time in UPS mode
- Built-in Wi-Fi and Bluetooth for remote monitoring
- Up to 12 units in parallel for the 6kW model
- IP54 protection with integrated DC/AC Type III SPD
- Time-based battery charging and discharging
- Three-year product warranty
How to Choose Between the 4kW and 6kW Models
| Selection factor | SE 4KFG-S1/LV | SE 6KFG-S1/LV |
|---|---|---|
| Nominal AC output | 4,000W | 6,000W |
| Maximum usable PV power | 6,000W | 9,000W |
| Maximum MPPT input current | 18A | 36A |
| Battery system | 24V/25.6V | 48V |
| Maximum utility input power | 6,000W | 11,500W |
| Maximum grid passthrough power | 4,000W | 9,000W |
| Parallel operation | Not supported | Up to 12 units |
Why Source from Senergy?
Senergy is a solar inverter manufacturer supported by its parent company, Asia Power Devices Inc. The company states that its group brings more than 30 years of power-electronics product-management experience and approximately 20 years of solar-inverter development and manufacturing expertise. Its product portfolio covers residential energy storage, single-phase grid-tied inverters and three-phase commercial inverter systems.
- Integrated R&D and manufacturing: Product development is supported by research capabilities in Taipei and Shenzhen, together with established power-electronics manufacturing resources.
- Controlled production processes: Manufacturing procedures include SPI, SMT, AOI, functional testing, Hi-Pot testing, burn-in testing and final inspection.
- Certification support: Senergy works with international testing organizations and supplies products designed for different regional standards.
- OEM and ODM services: Available options include product appearance, logo, packaging, documentation, accessories, application interfaces and monitoring-platform customization.
- Platform-based development: Distributors and energy brands can select an established inverter platform or discuss deeper hardware and software modifications.
- Technical documentation: Datasheets, user manuals, installation guides, certificates, warranty information and videos are available through the company’s support center.
- Three-year product warranty: The SE 4/6KFG-S1/LV is covered by a three-year warranty under the published product terms.