Description
Growatt WIT 20K-HU 20kW Hybrid Solar Inverter
The Growatt WIT 20K-HU 20kW hybrid solar inverter is designed for commercial and industrial facilities that require solar generation, battery storage and dependable backup power. With a maximum recommended PV input of 40kW and maximum conversion efficiency of 97.6%, it provides a flexible foundation for businesses looking to improve energy management and reduce reliance on conventional electricity supplies.
High-Capacity Solar Performance
This inverter supports a maximum PV input voltage of 1,000V and an MPPT operating range of 150–850V. Its two MPPT trackers, each supporting two PV strings, allow installers to design solar arrays around different roof sections or panel orientations, subject to electrical design limits. The 99.90% MPPT efficiency helps the system track available solar power effectively.
Battery Storage and Backup Power
The WIT 20K-HU supports both lithium-ion and lead-acid batteries, with a specified battery voltage range of 40–60V and a recommended voltage of 51.2V. Its maximum charging and discharging current is 420A, while RS485/CAN communication supports compatible battery management systems.
The inverter provides a rated backup AC output of 20kW, a grid transfer time below 10ms and UPS functionality. Black-start support can also be valuable when designing systems that need to restart under appropriate operating conditions. Actual backup performance depends on battery capacity, load demand, configuration and installation.
Generator Integration for Business Continuity
Integrated generator input and smart load control give system designers additional options for managing energy supply during limited solar production or grid interruptions. Generator compatibility should be confirmed against the generator’s electrical characteristics and the inverter’s installation requirements.
For EV charging installations, the inverter may form part of a wider solar-plus-storage solution. However, direct EV charger compatibility, available charging capacity and load-management requirements must be checked separately.
Applications Across Pakistan
The Growatt WIT 20K-HU is worth considering for factories, warehouses, commercial buildings, workshops, offices and other facilities with substantial daytime electricity demand. Businesses in Lahore, Karachi, Islamabad, Faisalabad, Multan and Rawalpindi can evaluate it for projects involving rooftop solar, battery storage and backup power.
Its IP66 enclosure rating supports installation planning in demanding environments, although correct mounting, ventilation clearances, protection devices and local installation requirements remain essential.
Choose a properly engineered solar system: confirm PV sizing, battery compatibility, generator integration, backup loads and the required AC configuration with a qualified installer before purchasing.
Technical Specifications Table
|
Specification |
Growatt WIT 20K-HU |
|---|---|
|
Brand |
|
|
Model |
WIT 20K-HU |
|
Inverter type |
Hybrid solar inverter |
|
Rated backup AC output |
20,000W |
|
Maximum recommended PV power |
40,000W |
|
Maximum PV input voltage |
1,000V |
|
PV start voltage |
180V |
|
Nominal PV voltage |
625V |
|
MPPT voltage range |
150–850V |
|
Number of MPPT trackers |
2 |
|
PV strings per MPPT |
2 |
|
Maximum input current per MPPT |
40A |
|
Maximum short-circuit current per MPPT |
50A |
|
Maximum efficiency |
97.6% |
|
European efficiency |
97% |
|
MPPT efficiency |
99.90% |
|
Battery chemistry |
Lead-acid or lithium-ion |
|
Battery voltage range |
40–60V |
|
Recommended battery voltage |
51.2V |
|
Maximum charging/discharging current |
420A |
|
Battery communication |
RS485/CAN |
|
Rated AC output power (grid) |
20,000W |
|
Maximum AC apparent power (grid) |
22,000VA |
|
AC nominal voltage options |
220/380V, 230/400V, 240/415V |
|
AC frequency |
50/60Hz |
|
Grid connection |
3P+PE / 3P+N+PE |
|
AC output power factor |
Adjustable, −1 to +1 |
|
Total harmonic distortion |
Less than 3% |
|
Backup overload capability |
2 times rated apparent power for 10 seconds |
|
Backup output current |
60.61A maximum |
|
Grid transfer time |
Less than 10ms |
|
Three-phase load imbalance |
100% |
|
Generator input |
Supported |
|
UPS function |
Supported |
|
Black start |
Supported |
|
Cooling |
Smart air cooling |
|
Enclosure protection |
IP66 |
|
Display |
OLED / LED + app |
|
Connectivity |
RS485, USB, Wi-Fi, LAN |
|
Dimensions (W × H × D) |
475 × 695 × 241mm |
|
Weight |
55kg |
|
Operating temperature |
−30°C to +60°C; derating above +45°C |
|
Maximum operating altitude |
4,000m |
|
Noise level |
≤55dB(A) |
|
Relative humidity |
0–100% |
|
AFCI |
Optional |
|
Warranty |
10 years options indicated; confirmation required |
Frequently Asked Questions
1. What is the rated power of the Growatt WIT 20K-HU?
The model is rated at 20kW for backup AC output and 20kW for grid-connected AC output. Its maximum AC apparent power on the grid side is 22,000VA.
2. What is the maximum solar panel capacity supported?
The datasheet specifies a maximum recommended PV power of 40,000W (40kW). The actual solar array design must also meet the inverter’s voltage, current, MPPT and string configuration limits.
3. What is the efficiency of this 20kW inverter?
The maximum efficiency is 97.6%, European efficiency is 97%, and MPPT efficiency is 99.90%. These are three different performance measurements and should not be used interchangeably.
4. Is the Growatt WIT 20K-HU compatible with lithium batteries?
Yes. The datasheet lists lithium-ion and lead-acid battery support. Its specified battery voltage range is 40–60V, with a recommended voltage of 51.2V. Confirm the battery model, BMS compatibility and communication protocol before installation.
5. Can it work with a generator?
Yes. The datasheet specifies generator input and smart load control. Generator sizing, electrical parameters, connection arrangements and control requirements should be verified for the particular installation.
6. Does the inverter provide backup power during a grid outage?
Yes, it has a rated backup output of 20kW, UPS functionality, black-start support and a specified grid transfer time below 10ms. Actual operation depends on the system configuration, available battery energy and connected loads.
7. What is its maximum battery charging and discharging current?
The specified maximum charging and discharging current is 420A. The battery bank and its BMS must support the intended current, and the installer should confirm permissible operating limits for the complete system.
8. Can this inverter support an EV charger?
It may be incorporated into a solar-plus-storage system that supplies an EV charger, but the datasheet does not explicitly certify direct EV charger compatibility. Confirm charger input requirements, simultaneous load demand, backup operating limits and any required load-management equipment.
9. Is the Growatt WIT 20K-HU suitable for outdoor installation?
Its enclosure is rated IP66, and its specified operating temperature range is −30°C to +60°C, with derating above +45°C. The final installation must still follow the manufacturer’s mounting, clearance, environmental and electrical requirements.
10. What warranty comes with this inverter?
The uploaded datasheet shows warranty options of 5 or 10 years but does not establish which term applies to the specific unit sold in Pakistan. Confirm the applicable warranty, registration requirements and local after-sales support with the supplier before publishing a guaranteed warranty period.
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