Xiamen D.T. Multi Tech Co., Ltd. is one of the most reliable manufacturers and suppliers of off grid power inverter in China. With abundant experience, we warmly welcome you to wholesale cheap off grid power inverter from our factory. If you have any enquiry about cooperation, please feel free to email us.
Off-Grid Power Inverter for Reliable Solar Energy Systems
An off-grid power inverter is the core of any independent solar power system, responsible for converting DC electricity from solar panels and battery storage into stable AC power without relying on the utility grid. Designed for long-term operation in off-grid environments, this inverter series delivers reliable power conversion, strong system compatibility, and stable performance for residential, commercial, and remote energy applications.
Products Description
| Model | GPEO-3KL1 | GPEO-4KL1 | GPEO-6KL1 | GPEO-12KL1 | |
| PV (DC Input) | Recommended max. PV input power | 4500W | 6000W | 8000W | 16000W |
| Max. input voltage (Voc) | 500V | 500V | 500V | 500V | |
| MPPT operating voltage range | 85V-450V (85V start up) | 85V-450V (85V start up) | 85V-450V (85V start up) | 85V-450V (85V start up) | |
| Number of MPPT | 1 | 1 | 1 | 2 | |
| Max. number of input strings per MPPT | 1 | 1 | 2 | 2 | |
| Max. input current per MPPT | 15A | 15A | 27A | 27A/27A (MAX.54A) | |
| Max. short-circuit current per MPPT | 18A | 18A | 35A | 37A/37A | |
| Grid (AC Input) | Max. input power | 4600W | 6440W | 11500W | 20700W |
| Max. input current | 20A | 28A | 50A | 90A | |
| Rated grid voltage | 220/230/240Vac | 220/230/240Vac | 220/230/240Vac | 220/230/240Vac | |
| Rated grid frequency | 50/60Hz | 50/60Hz | 50/60Hz | 50/60Hz | |
| Acceptable range | 170-280Vac (For UPS) / 90-280Vac (For Home Appliances) | ||||
| Battery Parameters (Bidirectional) | Battery type | LiFePO₄ / Lead-acid | LiFePO₄ / Lead-acid | LiFePO₄ / Lead-acid | LiFePO₄ / Lead-acid |
| Battery voltage range | 20~30Vdc | 20~30Vdc | 40~60Vdc | 40~60Vdc | |
| Rated Battery Voltage | 24Vdc | 24Vdc | 48Vdc | 48Vdc | |
| Max. charge/discharge current | 120A/160A | 120A/160A | 120A/130A | 210A/280A | |
| BMS communication mode | RS485 | RS485 | RS485 | RS485 | |
| Back-up Output (AC Output) | Rated output power | 3000W / 3600VA | 4000W / 4000VA | 6000W / 6000VA | 12000W / 12000VA (Twin output) |
| Rated output current | 15.6A | 18.2A | 27.3A | 54.5A | |
| Rated output voltage / Frequency | 220/230/240Vac 50/60Hz | 220/230/240Vac 50/60Hz | 220/230/240Vac 50/60Hz | 220/230/240Vac 50/60Hz | |
| Parallel Capacity | Single-phase Max. 12 units / Three-phase Max. 12 units | Single-phase Max. 12 units / Three-phase Max. 12 units | Single-phase Max. 12 units / Three-phase Max. 12 units | Single-phase Max. 6 units / Three-phase Max. 12 units | |
| Surge power | 7200VA 2s | 8000VA 5s | 12000VA 5s | 24000VA 5s | |
| THDv (@ linear load) | <3% | <3% | <3% | <3% | |
| Switching time | 10ms typical (For UPS) / 20ms typical (For Home Appliances) | ||||
| Efficiency | Peak efficiency | 95.00% | 95.00% | 98.00% | 98.00% |
| Max. MPPT efficiency | 99.90% | 99.90% | 99.90% | 99.90% | |
| Protection | Inner protection | Output short-circuit protection, Output overvoltage protection | |||
| Surge protection | PV type III, AC type III | ||||
| IP rating | IP54 | ||||
| General Parameters | Operating temperature range | -10°C ~ +55°C- | |||
| Relative humidity range | 10%~95% | 5%~95% | 5%~95% | 5%~95% | |
| Max. operating altitude | >2000m derating | >2000m derating | >2000m derating | >2000m derating | |
| Standby self-consumption | <10W | <10W | <10W | <20W | |
| Installation type | Wall-mounted | Wall-mounted | Wall-mounted | Wall-mounted | |
| Cooling mode | Fan cooling | Fan cooling | Fan cooling | Fan cooling | |
| Communication | RS232/RS485 | RS232/RS485/Dry contact/Wi-Fi | RS232/RS485/Dry contact/Wi-Fi | RS232/RS485/Dry contact/Wi-Fi | |
| Display | LCD | LCD | LCD | LCD | |
| Mechanical Specification | Inverter dimensions (L×W×H) (mm) | 395×315×105 | 445×347×120 | 445×347×120 | 630×525×125 |
| Net weight (kg) | 7.9 | 9.2 | 12.4 | 28.5 | |
| Shipping dimensions (L×W×H) (mm) | 495×385×165 | 560×465×240 | 560×465×240 | 715×602×210 | |
| Gross weight (kg) | 9 | 11.4 | 14.6 | 32 | |
| Warranty Period | 3 Years | ||||
In off grid solar power projects, equipment is often installed in locations with dust, humidity, high temperatures, or unstable weather conditions. DT Solar Power off grid inverters are designed with an IP54 protection rating, providing strong resistance against dust ingress and water splashes from all directions.
This level of protection ensures stable long-term operation in outdoor power rooms, rural installations, agricultural sites, and industrial environments where environmental conditions are less controlled.
Compared with standard indoor inverters, the IP54 enclosure significantly reduces the risk of internal component damage caused by dust accumulation, moisture, and accidental water exposure. This helps minimise maintenance requirements, extend service life, and lower total operating costs for project owners and system integrators.
By choosing an off grid power inverter with IP54 protection, EPC contractors and distributors can confidently deploy systems in challenging environments while maintaining high reliability and operational safety.
Advanced MPPT Solar Input Design
One of the most important factors when selecting an off grid power inverter is the flexibility of the solar input. DT Solar Power off grid inverters are designed with an advanced MPPT system that allows installers and EPC contractors to connect a wide range of solar panel strings without redesigning the entire system.
With an MPPT operating voltage range of 85–450VDC and a maximum PV input voltage of 500VDC, our inverters support high-voltage solar arrays while maintaining stable and safe operation.
In addition, the 12kW model supports up to 16000W of PV input, allowing system oversizing to improve energy harvesting in low-sunlight conditions. The dual MPPT design also enables separate panel arrays with different orientations or shading conditions, maximising total power generation.
This flexible MPPT architecture significantly reduces system design limitations, lowers installation costs, and makes future system expansion easier for off grid solar power projects.
FAQ
Q: What is the maximum solar panel input I can connect?
A: Depending on the model, the maximum recommended PV input ranges from 4500W to 16000W. The 12kW model supports up to 16kW PV input, enabling system oversizing to improve energy generation.
Q: What MPPT voltage range does the inverter support?
A: The MPPT operating voltage range is 85–450VDC, with a maximum PV open-circuit voltage of 500VDC, allowing flexible string design and high-voltage solar arrays.
Q: Can multiple inverters be connected in parallel?
A: Yes. Our off grid power inverters support parallel operation, up to 12 units, to increase system capacity or create three-phase off grid power systems for larger projects.
Q: What communication and monitoring options are available?
A: The inverters support RS232 / RS485 communication, and the 12kW model also offers WiFi and dry contact, enabling remote monitoring and system control.
Q: What certifications and quality control do you provide?
A: Each inverter undergoes strict factory testing and quality inspections. OEM customisation and project-based quality requirements can also be supported.
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