SAJ H2-20K-T3 is a new-generation hybrid inverter for three-phase photovoltaic systems with battery storage. Three independent MPPT trackers enable efficient allocation of PV strings across different roof orientations or pitches. The system supports flexible DC oversizing, fast charging and discharging of a compatible battery, and backup power with a transfer time of no more than 20 ms.
Key benefits
- Rated three-phase output power 20 kW.
- Three MPPT trackers for more flexible PV-system design.
- Support for high-current PV modules up to 20 A per string.
- Support for a larger PV array with maximum input power up to 40 kWp.
- Support for fast charging and discharging of a high-voltage LiFePO₄ battery.
- Supports 100% unbalanced three-phase loads.
- Backup transfer in no more than 20 ms.
- Maximum efficiency 98,0 %.
- Integrated Type II surge protection on both AC and DC sides.
- Protection rating IP65 and a ten-year manufacturer's warranty according to the datasheet.
| Parameter | Value |
| Model | H2-20K-T3 |
| Rated AC power | 20 kW |
| Maximum AC apparent power | 22 kVA |
| Maximum PV array power | 40 kWp |
| Maximum DC voltage | 1.000 V |
| MPPT voltage range | 180–900 V |
| Number of MPPTs / strings | 3 / 2+2+2 |
| Maximum PV input current | 40 A / 40 A / 40 A |
| Battery type and voltage | LiFePO₄, 180–800 V |
| Maximum charging/discharging current | 50 A / 50 A |
| Number of battery inputs | 2 |
| Rated output current | 29,0 A |
| Maximum output current | 31,9 A |
| Backup output | 20 kVA; short-term peak power 30 kVA for 3 s |
| Rated grid voltage | 220/380 V, 230/400 V or 240/415 V; 3L+N+PE |
| Maximum / European efficiency | 98,0 % / 97,6 % |
| Backup transfer time | ≤20 ms |
| Protection | IP65; Type II AC and DC surge protection |
| Operating temperature | from −40 °C up to +60 °C; power derating above 45 °C |
| Cooling / noise | intelligent fan cooling / less than 50 dBA |
| Dimensions (H × W × D) | 576 × 659 × 242 mm |
| Weight | 50 kg |
| Communication | Wi-Fi/Ethernet; 4G optional |
| Warranty according to datasheet | 10 years |