Growatt WIT-28-55K-HU
Growatt — the world's #1 residential solar inverter brand by Wood Mackenzie. The WIT 28-55K-HU is a three-phase commercial hybrid inverter (4–100 kW). Designed for schools, mosques, agritech farms, and SMEs across the Middle East replacing diesel gensets with PV+battery.
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 Sudan
| Market | Sudan |
| Grid authority / regulator | Sudanese Electricity Distribution Company (SEDC), Ministry of Energy and Petroleum |
| Quotation currency | SDG |
| Support hours timezone | Africa/Khartoum |
| Delivery & installation coverage | Khartoum, Omdurman, Port Sudan, Kassala, Nyala |
Figures on this page are the manufacturer's own, measured at the test conditions the datasheet states — they do not change by country. What changes is the approval that has to be met before the unit is energised: in Sudan that is Sudanese Electricity Distribution Company (SEDC), Ministry of Energy and Petroleum. Confirm the grid code, import requirements and any local certification with them, or with us, before you order.
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
Is the Growatt WIT 28-55K-HU approved for use in the UAE?
Yes — Growatt inverters are widely used in DEWA Shams Dubai, SEWA, FEWA, EtihadWE, and SEC Saudi Arabia installations. Verify the WIT 28-55K-HU on the latest DEWA Approved Equipment List before EPC submission. Growatt MJS Solutions can supply DEWA documentation on request.
What warranty comes with the Growatt WIT 28-55K-HU, and is it valid in the Middle East?
5-Year Manufacturer Warranty, valid across every market we serve, including UAE, KSA, Oman, Bahrain, Qatar, Kuwait, Egypt, and the wider Middle East/North Africa. Extended warranty options are available at the time of purchase. All warranty claims are processed locally through Growatt MJS Solutions in Dubai.
How do I monitor the Growatt WIT 28-55K-HU remotely?
All Growatt inverters and batteries integrate with the ShinePhone mobile app and ShineServer cloud platform. Add a ShineWiFi-X dongle or use the built-in WiFi (depending on model) for real-time monitoring, alerts, and multi-site management. The app supports English, Arabic, and 20+ languages.
What batteries does the Growatt WIT 28-55K-HU pair with?
WIT 28-55K-HU is compatible with Growatt's LFP battery range — most commonly the ARK XH, ARK HV, or APX HV stack depending on model and topology. Battery sizing depends on your daily backup load; a typical UAE villa uses 10–20 kWh of usable storage. Contact Growatt MJS Solutions for a tailored sizing recommendation.
What's the lead time for the Growatt WIT 28-55K-HU in Dubai?
In-stock units typically ship within 1–2 business days from our Dubai warehouse. For larger orders or specific configurations, lead times of 2–4 weeks may apply. Contact Growatt MJS Solutions on +971 4 255 0887 or sales@growatinverter.com for an exact quote.
How does the Growatt WIT 28-55K-HU perform in UAE summer rooftop temperatures?
Growatt inverters are rated -25 to +60 °C ambient operation, but real-world derating begins around 45 °C. For UAE rooftops where temperatures can exceed 50 °C in summer, we recommend mounting in a shaded location with good airflow, and slightly oversizing PV-to-AC ratio to compensate for afternoon clipping. The IP65/IP66 rating handles dust and humidity.