Xiamen D.T. Multi Tech Co., Ltd. is one of the most reliable manufacturers and suppliers of solar inverter for off-grid applications in China. With abundant experience, we warmly welcome you to wholesale cheap solar inverter for off-grid applications from our factory. If you have any enquiry about cooperation, please feel free to email us.
Solar Inverter for Off-Grid Applications
Reliable power conversion is the foundation of any off-grid solar system. Our solar inverter for off-grid applications is designed for residential, commercial, and remote energy projects that require stable output, flexible battery compatibility, and long-term operational reliability. Available in 1.5kVA and 3.0kVA power classes, this inverter series provides a dependable solution for off-grid solar power systems where grid access is limited or unavailable.
Built for real-world operating conditions, the system integrates solar input, battery storage, and AC power management into one compact unit, making it an ideal choice for professional installers, system integrators, and bulk procurement projects.
Products Description
| Item | DT-1K8L1-M | DT-3K6L1-M | |
| PV (DC Input) | Recommended Max. PV Input Power | 650W | 1500W |
| Max. Input Voltage (Voc) | 130V | 145V | |
| MPPT Operating Voltage Range | 15V–120V (@21V start-up) | 30V–120V (@36V start-up) | |
| Number of MPPT | 1 | 1 | |
| Number of Input Strings per MPPT | 1 | 1 | |
| Max. Input Current per MPPT | 20A | 25A | |
| Max. Short-Circuit Current per MPPT | 25A | 27A | |
| Grid (AC Input) | Max. Input Power | 2300W | 4600W |
| Max. Input Current | 10A | 20A | |
| Rated Grid Voltage | 220/230/240Vac (L,N,PE) | 220/230/240Vac (L,N,PE) | |
| Rated Grid Frequency | 50/60Hz | 50/60Hz | |
| Acceptable Voltage Range | 170–280Vac (UPS) / 90–280Vac (Home Appliances) | 170–280Vac (UPS) / 90–280Vac (Home Appliances) | |
| Battery Parameters (Bidirectional) | Battery Type | Lead-acid | LiFePO₄ / Lead-acid |
| Battery Voltage Range | 9.5V–14.5V | 20V–30V | |
| Rated Battery Voltage | 12Vdc | 24Vdc | |
| Max. Charge / Discharge Current | 105A / 150A | 120A / 180A | |
| Back-up Output (AC Output) | Rated Output Power | 1500W / 1800VA | 3000W / 3600VA |
| Rated Output Current | 7.8A | 15.6A | |
| Rated Output Voltage | 220/230/240Vac (L,N,PE) | 220/230/240Vac (L,N,PE) | |
| Output Frequency | 50/60Hz | 50/60Hz | |
| Surge Power | 3600VA (2s) | 7200VA (2s) | |
| THDv (Linear Load) | < 3% | < 3% | |
| Switching Time | 10ms typical (For UPS) / 20ms typical (For Home Appliances) | ||
| Efficiency | Peak Efficiency | 95% | 95% |
| Max. MPPT Efficiency | 93% | 92% | |
| Protection | Inner Protection | Output short-circuit / Output overvoltage | |
| Surge Protection | PV: Type III / AC: Type III | ||
| IP Rating | IP21 | ||
| General Parameters | Operating Temperature | -10°C ~ +50°C | |
| Relative Humidity | 5% ~ 95% | 5% ~ 95% | |
| Max. Operating Altitude | >2000m (Derating) | >2000m (Derating) | |
| Standby Self-Consumption | <10W | <10W | |
| Installation Type | Wall-mounted | Wall-mounted | |
| Cooling Mode | Fan cooling | Fan cooling | |
| Communication | RS232 | RS232 / RS485 | |
| Display | LCD | LCD | |
| Mechanical Specifications | Inverter Dimensions (W×H×D) | 350 × 290 × 108 mm | 350 × 290 × 108 mm |
| Net Weight | 5.5 kg | 6 kg | |
| Carton Dimensions (W×H×D) | 495 × 385 × 165 mm | 495 × 385 × 165 mm | |
| Gross Weight | 6.5 kg | 7 kg | |
| Warranty Period | 2 Years | ||
Why Professional Buyers Choose This Off-Grid Inverter
Professional buyers select this solar inverter for off-grid applications because it balances technical reliability, system flexibility, and commercial practicality. The product is suitable for bulk procurement, project-based installations, and OEM cooperation, making it an ideal choice for distributors, EPC contractors, and solar system integrators seeking a stable long-term supply.
With proven electrical performance, flexible battery compatibility, and a compact design optimized for off-grid solar power systems, this inverter series delivers dependable performance where power stability matters most.
OEM, Bulk Orders, and Project Support
This off-grid inverter series is available for bulk orders and long-term supply cooperation. OEM branding, project-based configuration support, and technical documentation are available upon request. Our team supports professional buyers from system design through deployment, ensuring smooth integration into off-grid solar projects.
FAQ
Q: What types of solar projects is this inverter typically used for?
A: This inverter is commonly used in residential off-grid homes, rural electrification projects, farms, remote cabins, island installations, and telecom backup systems. Its compact design and stable output make it suitable for both household and light commercial off-grid applications.
Q: Can this inverter handle surge loads like pumps or refrigerators?
A: Absolutely. The inverter offers strong surge capability, delivering up to 2× rated power for 2 seconds. This ensures the reliable startup of inductive loads such as water pumps, refrigerators, and power tools commonly used in off-grid systems.
Q: What happens during power transfer between PV, battery, and AC input?
A: The inverter features fast transfer switching. In UPS mode, switching time is typically 10 milliseconds, while standard household applications maintain 20 milliseconds, ensuring minimal interruption to connected loads.
Q: Is the inverter suitable for high-temperature or humid environments?
A: Yes. The inverter operates reliably in temperatures from -10°C to +50°C and humidity levels from 5% to 95%. Active fan cooling ensures thermal stability under continuous operation.
Q: What is the warranty period and after-sales support policy?
A: The inverter is supplied with a standard 2-year warranty. Technical support, troubleshooting assistance, and replacement parts are available to support long-term system operation and project deployment.
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