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| Model | NKD-8KW | NKD-10KW | NKD-15KW | NKD-20KW | NKD-30KW | |
| Rated power | 8KW | 10KW | 15KW | 20KW | 30KW | |
| Battery | Rated voltage | 96V DC/192V DC/220V DC/384V DC | ||||
| Voltage of over discharge protection | 96VDC/172V DC/194V DC/345V DC | |||||
| Controller | Rated current | 100A | ||||
| Rated voltage | 192V DC/220V DC/384V DC | |||||
| Number of inputs | 4 | |||||
| Max. current of each input | 25A | |||||
| Solar input voltage | <165VDC/<330V DC/<378V DC/<660V DC | |||||
| Voltage of overcharge protection | 220V DC/255V DC/445V DC(programmable) | |||||
| Control accuracy | ±0.1 | |||||
| Display accuracy | ±0.1 | |||||
| Efficiency | >95% | |||||
| Inverter | Input voltage | 88-132V AC/176-264V AC | ||||
| Input frequency | 45-65Hz | |||||
| Output voltage | 110V AC/220V AC | |||||
| Output frequency | 50/60Hz | |||||
| Output waveform | Pure sine wave, THD<4% (full load) | |||||
| Protection function | Output short circuit protection, over-voltage protection, under-voltage protection, low battery protection, etc. | |||||
| Manual power-on/off | Manual power-on/off preferred | |||||
| Automatic power on/off | Light-operated power-on+fixed-time power-off (programmable) | |||||
| Other | Ambient temperature for operation | 0-40℃ | ||||
| Relative humidity for operation/storage | 20-90% (No condensation, maximum) | |||||