Product Overview
| Manufacturer | Growatt |
| Type | 3-phase Hybrid Storage Inverter |
| Max PV Input | 108 KW |
| Max Output | 55kW/60.5kVA |
| Nominal AC voltage/range | 208V/220V, -15%~10% |
| MPP Trackers | 10 |
| Max Battery charge/discharge current | 156A |
| Max Efficiency | 98.2% |
| Types of battery | Lithium |
| Electronics Protection Degree | IP66/NEMA 4X |
| Warranty | 10 years |
| Communications | RS485/CAN, WiFi//4G/LAN(OPT) |
| Certificate | UL1741:2021, UL1741 SA/SB:2020, IEEE1547:2018, IEEE1547.1:2020, HECO Rule14, E-5000, CSIP, SA17-SA18, UL1998:2018, CEC, FCC Part 15, CSA C22.2.107.1 |
Key Features
- 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
PV Input Data
Max.PV Power Input: 108 KW
Start voltage: 195V
Max.DC Voltage: 800V
MPPT nominal voltage/range: 360V, 180V-550V
No. of PV Strings per MPPT: 2
Max. input current per MPPT: 32A
Max. short-circuit current per MPPT: 40A
Output Data
AC nominal power: 110kW
Nominal AC voltage/range: 208V/220V, -15%~10%
Battery Data
Battery voltage range: 380V-650V, recommended @ 512V
Max charging and discharging current: 156A
Continuous charging and discharging power: 62.3kW
Type of battery: Lithium
Advanced Protection & Safety
PV reverse polarity protection
Battery reverse protection
AC/DC surge protection: Type II
Insulation resistance monitoring
Ground fault monitoring
Grid monitoring
Residual-current monitoring unit
AC short-circuit protection
String monitoring
Anti-islanding protection
PID protection
AFCI function: Opt
General data
Dimensions( W/H/D ): 33.5/53.1/20.1inch (850/1350/510mm)
Weight: 160kg/352.7Ibs
Protection degree: IP66/NEMA 4X
Display: OLED+LED/WIFI+APP
Communication: RS485/CAN, WiFi//4G/LAN(OPT)
Warranty: 5 Years, 10 Years (OPT)
Download
Datasheet:
Growatt_WIT_28_55K-HU-US_L2_Datasheet_EN_202405.pdf
User Manual:
Growatt_WIT_28-55K-US_L2_User_Manual_EN_202312.pdf
Quick Guide:
Growatt_WIT_28-55K-HU-L2_QuickGuide_EN_202408.pdf
UL1741 Certified:
Growatt_WIT_50-100K_28-55K-US_UL1741SA_UL1741SB_UL1741_CSAC22.2_IEEE1547_2018_IEEE1547_2020_HECO.pdf
C&I ESS Demand Checklist
Growatt C&I ESS Demand Checklist US version.pdf
About Growatt
Growatt is a leading global manufacturer of solar inverters, energy storage solutions, and smart energy management systems. Founded in 2010, the company has grown rapidly to become a trusted brand in the renewable energy industry, with a presence in over 100 countries and regions around the world.
Growatt’s innovative products are designed to maximize energy efficiency and enable customers to reduce their carbon footprint while saving money on energy bills. The company’s range of solar inverters includes both string and central inverters, which are suitable for a wide range of applications, from residential rooftops to large-scale commercial and utility-scale projects.
In addition to solar inverters, Growatt also offers a range of energy storage solutions, including lithium-ion batteries and hybrid inverters. These products allow customers to store excess energy generated by their solar panels and use it when needed, further reducing their reliance on grid power.
With a commitment to innovation and customer service, Growatt is dedicated to providing reliable, high-quality products and solutions that meet the evolving needs of the renewable energy industry.
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