Growatt 12KW Split phase 120/240Vac Off-Grid Solar Inverter
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Growatt 12KW Split phase 120/240Vac Off-Grid Solar Inverter
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What it is, and what it is for
Growatt 12 kW Split-Phase 120/240 V Off-Grid Inverter-Charger
A 12 kW low-frequency off-grid inverter for a 48 V battery bank, with split-phase 120/240 V output, a built-in 120 A MPPT solar charger and a 100 A charger from a generator or the grid. The size for a full off-grid house or a shop: it starts a well pump, a central air unit or a compressor on its 36 kW surge, and its copper transformer takes the abuse of motor loads that high-frequency inverters cannot.
The MPPT accepts up to 7,000 W of panels at up to 250 V DC, and you can set solar or grid as the priority source and schedule charging from the AC input, so a generator runs only when it must. Transfer between sources is under 10 ms, so the house does not notice. It works with LiFePO4 and lead-acid banks, monitors over Wi-Fi or GPRS, and is listed to UL 1741 and CSA C22.2 No. 107.1. 97 percent peak efficiency; IP21, so it mounts indoors in a dry, ventilated space; about 75 kg (165 lb); 2-year warranty.
Size the battery for the 12 kW: a 48 V LiFePO4 bank of 200 Ah or more, and 4/0 AWG battery cable with a 300 A fuse or breaker. For a matched package with panels and battery see the 12 kW off-grid system. Specifications are from Growatt's datasheet and are for reference; the installation must follow the manual, the NEC and local code, be carried out by a licensed electrician.
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The figures the manufacturer publishes. The datasheet above is the reference if the two ever differ.
| Specification | Growatt 12KW Off-Grid Solar Inverter Details |
|---|---|
| Battery Voltage | 51.2VDC |
| Battery Type | Lithium/Lead-acid |
| Inverter Output (Rated Power) | 12KW |
| Surge Rating | 36KW |
| Waveform | Pure sine wave/ same as input (bypass mode) |
| Nominal Output Voltage RMS | 104-110-115-120/208-220-230-240VAC(optional) |
| Output Frequency | 50Hz/60Hz +/-0.3 Hz |
| Inverter Efficiency (Peak) | 97% |
| Transfer Time | <10ms |
| Solar Charger (Maximum PV Charge Current) | 120A |
| Maximum PV Array Power | 7000W |
| AC Input Voltage | 240VAC |
| Max. Charging Current | 100A |
| Protection Degree | IP21 |
| Dimensions (W/H/D) | 380/650/225mm |
| Weight | 75kg |
| Operating Environment (Temperature Range) | 0°C to 50°C |
| Warranty | 2 Years |
| Certifications | UL STD.1741, CSA STD CSA C22.2 No.107.1 |
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