Growatt Hybrid Inverters WIT-28-55K-HU
The WIT-28-55K-HU is a three-phase commercial hybrid inverter. Designed for schools, mosques, agritech farms, and SMEs across the Middle East replacing diesel gensets with PV+battery.
Models and prices
- WIT-28-55K-HUAED 17,477incl. VAT
Technical Specifications
| Parameter | WIT-28-55K-HU |
|---|---|
| Electrical Data | |
| Max. recommended PV power (for module STC) | 56kW / 75.6kW / 86.4kW / 108kW |
| No. of MPPT trackers | 5 / 7 / 8 / 10 |
| AC nominal power/max. AC apparent power | 28kW/30.8kVA / 35kW/38.5kVA / 40kW/44kVA / 55kW/60.5kVA |
| Max. output current | 85.4A@208V / 106.9A@208V / 122.2A@208V / 168.1A@208V |
| Max. charging / discharging current | 79A / 99A / 113A / 156A |
| Continuous charging / discharging power | 31.7kW / 39.7kW / 45.3kW / 62.3kW |
| PV Input | |
| Start voltage | 195V |
| Max. open circuit voltage of PV | 630V |
| MPPT voltage range | 360V-1000V / 360V-550V / 360V-550V / 360V-550V |
| Max. input current per MPPT tracker | 32A |
| Max. short-circuit current per MPPT tracker | 40A |
| No. of PV strings per MPPT tracker | 2 |
| AC Output | |
| Nominal AC voltage/range | 208V/220V, -15%~10% |
| AC grid frequency/range | 60Hz, 55-65Hz |
| Adjustable power factor | -1...+1 |
| THDi | <3% (100% load) |
| AC grid connection type | 3P3W+PE/3P4W+PE |
| Battery Input | |
| Battery voltage range | 380V-650V, recommended @ 512V |
| BMS communication | RS485/CAN |
| Battery type | Lithium |
| Efficiency | |
| Max. efficiency | 98.2% |
| Protection Features | |
| PV reverse polarity protection | Yes |
| Battery reverse protection | Yes |
| AC/DC surge protection | Type II |
| Insulation resistance monitoring | Yes |
| Ground fault monitoring | Yes |
| Grid monitoring | Yes |
| Residual-current monitoring unit | Yes |
| AC short-circuit protection | Yes |
| String monitoring | Yes |
| Anti-islanding protection | Yes |
| PID protection | Yes |
| AFCI function | Opt |
| Communication | |
| Interfaces | RS485/CAN |
| Interfaces/WIFI/4G | Yes/Opt |
| Mechanical Data | |
| Dimensions (W/H/D) | 33.5/53.1/20.1 inch (850/1350/510mm) |
| Weight | 153kg/337.3lbs / 160kg/352.7lbs / 160kg/352.7lbs / 160kg/352.7lbs |
| Operating Conditions | |
| Operating temperature range | -22°F~+140°F, >122°F derating |
| Altitude | 13123ft(4000m) |
| Topology | Transformerless |
| Cooling | Smart air cooling |
| Enclosure | IP66/NEMA 4X |
| Display | OLED+LED/WIFI+APP |
Figures are measured at the test conditions the manufacturer’s datasheet states. A dash means the manufacturer publishes no figure for that model.
Availability & grid compliance in the UAE
| Market | UAE |
|---|---|
| Grid authority / regulator | DEWA, ADDC, SEWA |
| Quotation currency | AED |
| Support hours timezone | Asia/Dubai |
| Main cities | Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah |
Key Features & Technical Highlights
- Scalable system configuration, extend to 165kW
- Support UPS function and black start
- 100% unbalanced load when backup
- 110% continuous AC overloading capacity
- Support remote control of DG
- Grid-support functions
Frequently Asked Questions
What are the AC output specifications of the Growatt WIT-28-55K-HU inverter?
On the Growatt WIT-28-55K-HU inverter, the AC nominal power/max. AC apparent power is 28kW/30.8kVA / 35kW/38.5kVA / 40kW/44kVA / 55kW/60.5kVA, the nominal AC voltage/range is 208V/220V, -15%~10%, the AC grid frequency/range is 60Hz, 55-65Hz, the adjustable power factor is -1...+1 and the THDi is <3% (100% load).
What are the PV input specifications of the Growatt WIT-28-55K-HU inverter?
On the Growatt WIT-28-55K-HU inverter, the start voltage is 195V, the max. open circuit voltage of PV is 630V, the max. input current per MPPT tracker is 32A, the max. short-circuit current per MPPT tracker is 40A and the number of PV strings per MPPT tracker is 2.
What are the battery specifications of the Growatt WIT-28-55K-HU inverter?
On the Growatt WIT-28-55K-HU inverter, the battery voltage range is 380V-650V, recommended @ 512V, the max. charging / discharging current is 79A / 99A / 113A / 156A, the continuous charging / discharging power is 31.7kW / 39.7kW / 45.3kW / 62.3kW, the BMS communication is RS485/CAN and the battery type is lithium.
What are the efficiency specifications of the Growatt WIT-28-55K-HU inverter?
On the Growatt WIT-28-55K-HU inverter, the max. efficiency is 98.2%.
Which protection functions does the Growatt WIT-28-55K-HU inverter have?
The Growatt WIT-28-55K-HU inverter specification lists PV reverse polarity protection, battery reverse protection, AC/DC surge protection (Type II), insulation resistance monitoring and ground fault monitoring.
What are the dimensions, weight and enclosure specifications of the Growatt WIT-28-55K-HU inverter?
On the Growatt WIT-28-55K-HU inverter, the dimensions (W/H/D) are 33.5/53.1/20.1 inch (850/1350/510mm), the topology is transformerless, the cooling is Smart air cooling and the enclosure is IP66/NEMA 4X.