Working Principle of Solar Inverter
The solar inverter converts DC power generated by solar panels into stable AC power for household or commercial applications. During the day, PV panels produce direct current (DC) under sunlight. The inverter optimizes this DC via internal circuits and converts it into standard alternating current (AC), synchronizing with grid voltage and frequency.
Excess power can be stored in connected batteries or fed back to the grid. When sunlight is insufficient, the inverter draws energy from the batteries, inverting it to AC to ensure a continuous power supply. Integrated BMS communication monitors battery status in real-time, enhancing system safety and overall efficiency.
Solar Inverter Features
Designed for long-term outdoor reliability, this solar inverter features a rugged IP65-rated waterproof and dustproof enclosure. It utilizes an intelligent cooling system to ensure efficient operation under various conditions. The unit supports stackable battery connections for flexible capacity expansion and is equipped with built-in BMS communication for safe, coordinated battery management. Backed by a 10-year warranty, this inverter offers exceptional reliability and a long service life for residential and light commercial PV systems.
Basic Parameters of Solar Inverters
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DG-15KH3 |
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PV (DC Input) |
Recommended max. PV input power |
22800W |
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Max. input voltage (Voc) |
1000V |
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MPPT operating voltage range |
200-850V (@200V start up) |
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Number of MPPT |
2 |
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Max. number of input strings per MPPT |
1+2 |
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Max. input current per MPPT |
15A+30A |
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Max. short-circuit current per MPPT |
19.5/40A |
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On-grid (Bidirection) |
Rated input power |
15000W |
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Rated input current |
21.7A |
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Rated grid voltage |
400V (L1,L2,L3,N,PE) 50/60Hz |
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THDi |
<3% |
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Power factor |
-0.8~+0.8 |
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Battery Parameters (Bidirection) |
Battery type |
SLA & LiFePO4 |
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Battery voltage range |
160-800V |
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Rated Battery Voltage |
400V |
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Max. charge/discharge current |
50A |
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BMS communication mode |
485;CAN |
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Back-up Output (AC Output) |
Rated output power |
15000W/15000VA |
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Rated output current |
21.7A |
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Rated output voltage |
400V (L1,L2,L3,N,PE) 50/60Hz |
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Surge power |
16500VA |
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THDv (@ linear load) |
<3% |
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Switching time |
<10ms |
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Efficiency |
Max. MPPT efficiency |
99.90% |
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Max. efficiency |
98.00% |
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European efficiency |
97.50% |
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Battery charging/discharging efficiency |
97.00% |
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Protection |
Protection |
√ DC switch |
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Surge protection |
PV: Type III; AC: Type III |
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General Parameters |
IP rating |
IP65 |
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Operating temperature range |
-20~60℃ |
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Relative humidity range |
10~90% |
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Installation type |
Wall mounted |
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Cooling mode |
Smart cooling |
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Communication |
Wi-Fi; RS485; CAN; GPRS |
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Display |
LCD; APP |
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Mechanical Specifications |
Inverter dimensions (LWH) (mm) |
480425202 |
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Net weight (kg) |
27 |
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Carton dimensions (LWH) (mm) |
637545326 |
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Gross weight (kg) |
31 |
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Warranty |
5 Years Standard (10/15 Years Optional) |
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