Solar Inverter

Growatt 50KW 75KW 100KW Hybrid Solar Energy Storage Inverter

This is Growatt’s commercial three-phase transformerless hybrid inverter series, covering models WIT 50/63/75/100K-H and WIT 50/63/75/100K-HU, with an expandable system capacity up to 300kW. The HU version supports UPS backup and black start functions.

Product Configuration：

Datasheet	WIT 50K-H WIT 50K-HU	WIT 63K-H WIT 63K-HU	WIT 75K-H WIT 75K-HU	WIT 100K-H WIT 100K-HU
Input Data (PV)
Max. recommended PV power(for module STC)	109.2kW	124.8kW	156kW	156kW
MPPT nominal voltage/range	550V,180V~800V
No. of PV strings per MPP tracker	2
No. of MPP trackers	7	8	10	10
Battery Data (DC)
Battery voltage range	600-1000V (for 3P3W) / 680-1000V (for 3P4W)
Recommended battery voltage	768V
Max charging and discharging current	83.3A	105A	125A	167A
Backup Power (AC)
Backup Power (AC)	50kW	63kW	75kW	100kW
Max. AC apparent power	60kVA	75.6kVA	90kVA	120kVA
Rated AC output voltage	220V/230V/240V(L-N),380V/400V/415V(L-L)
Nominal AC output frequency	50/60 Hz
Load connection	3P3W+PE/3P4W+PE

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Detailed description

Advantage

– Built-in UPS and black start
– 100% unbalanced output
– 110% continuous AC overloading
– Type II SPD on DC and AC side

– Multiple MPPTs input
– DC/AC Ratio up to 2.0
– Max. efficiency up to 98%

– Scalable up to 300kW
– Support lithium and lead-acid battery
– Remote control of DG

Basic Parameters

Datasheet	WIT 50K-H WIT 50K-HU	WIT 63K-H WIT 63K-HU	WIT 75K-H WIT 75K-HU	WIT 100K-H WIT 100K-HU
Input Data (PV)
Max. recommended PV power(for module STC)	109.2kW	124.8kW	156kW	156kW
Start voltage	195V
Max. input voltage	1100V
MPPT nominal voltage/range	550V,180V~800V
Max. input current /MPP tracker	32A
Max. short-circuit current /MPP tracker	40A
No. of PV strings per MPP tracker	2
No. of MPP trackers	7	8	10	10
Battery Data (DC)
Battery voltage range	600-1000V (for 3P3W) / 680-1000V (for 3P4W)
Recommended battery voltage	768V
Max charging and discharging current	83.3A	105A	125A	167A
BMS communication	RS485/CAN
Backup Power (AC)
Backup Power (AC)	50kW	63kW	75kW	100kW
Max. AC apparent power	60kVA	75.6kVA	90kVA	120kVA
Rated AC output voltage	220V/230V/240V(L-N),380V/400V/415V(L-L)
Nominal AC output frequency	50/60 Hz
Load connection	3P3W+PE/3P4W+PE
Max. output current	90.9A	114.5A	136.4A	181.8A
THDv	<3% (Linear load)
Load unbalance	100% three-phase unbalanced
Overload capacity	≤110%: Continues; 110%~120%: <10min; >120%: 200ms
On/off grid transfer time	≤20ms
Max. efficiency	98.2%
Protection Devices
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
Strings monitoring	Yes
Anti-islanding protection	Yes
PID protection	Yes
AFCI function	Opt
General
Weight	153kg	153kg	160kg	160kg
Operating temperature range	–30 °C~60 °C (> 50°C, derating)
Relative humidity	0~100%
Altitude	4000m
Topology	Transformerless
Cooling	Smart air cooling
IP degree	IP66
Display	OLED+LED/WiFi+APP
Interfaces: RS485/CAN/USB	Yes
Interfaces: WIFI/LAN	Opt
Warranty (5/10 years)	Yes/Opt
EN 62920-2017, IEC/EN 62477-1, IEC/EN 62109-1, IEC/EN 62109-2, IEC 62116, IEC 61727, G99:2020, EN 50549-1, VDE 4105, NRS 097-2-1

Project

Application Scenarios：

Factory
Business Districts
Farm, Residential House
Hospital

FAQ：

What is the Growatt WIT 100K-HU and what applications is it designed for?

The WIT 100K-HU is a 100kW three-phase hybrid storage inverter designed for large-scale commercial and industrial (C&I) solar projects, medium-to-large commercial rooftops, agricultural installations, and micro-grid applications. It integrates PV inverter functionality with energy storage and diesel generator (DG) input support, offering eight distinct application modes including self-consumption, peak shaving, demand charge reduction, backup power, and power quality optimization. The "HU" version is specifically designed for integrated solar + storage + grid + DG systems
What monitoring and communication options does the WIT 100K-HU offer?

The WIT 100K-HU comes with integrated Wi-Fi and 4G (optional) for seamless connection to Growatt’s ShineServer platform and ShinePhone mobile app. Users can monitor real-time performance, historical data, battery status, and system alarms remotely. For third-party integration, the inverter supports RS485, CAN, and dry contact interfaces. It is compatible with Modbus RTU / Modbus TCP protocols, allowing integration into existing building management systems (BMS) or SCADA platforms. The WIT series also supports multiple inverter parallel monitoring – up to 9 units can be managed from a single portal.
Can the WIT 100K-HU work with an existing diesel generator? How does that function?

Yes – the WIT 100K-HU has a dedicated generator (DG) input port, specifically designed to integrate a diesel generator as a backup power source. In off-grid or weak-grid areas, when battery levels are low and solar is insufficient, the inverter can automatically start the generator (via dry contact signal), use generator power to charge the battery and supply loads, then stop the generator once conditions recover. This feature significantly reduces diesel consumption and operating costs. The generator connection is synchronized with the inverter’s AC output, ensuring seamless transfer without voltage spikes or disruption to sensitive loads.
Does the inverter provide backup power during grid outages?

Yes. The WIT 100K-HU features both UPS (Uninterruptible Power Supply) and black start functions, ensuring seamless power supply to critical loads during grid failures. In backup mode, it supports 100% unbalanced load, meaning each phase can deliver up to full power even if the load is not equally distributed across phases.

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Hybrid Inverter Solar Inverter

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Solar Inverter

Growatt 50KW 75KW 100KW Hybrid Solar Energy Storage Inverter

Detailed description

Advantage

Basic Parameters

Project

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