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The Growatt WIT 4K-HU Inverter
The Core of Your Intelligent Home Energy System

why choose our products
In an age of energy awareness and smart living, the inverter is more than a component, but rather the central nervous system for your home's energy consumption. It is for those who seek to not only consume energy but to define, regulate, and optimize energy consumption with sophistication and simplicity. This is where engineering meets smart living: a seamless flow of effortless, intelligent, and dependable energy.
Product Advantages
A new layer of control and awareness
The age of treating your solar investment as a "set it and forget it" piece of equipment is gone. The WIT 4K-HU changes the way you relate to energy. With its elegantly simple monitoring platform, you will have a window into the inner workings of your home's energy consumption and production. You will actually see energy flow from your panels and start converting the energy to power your life in real-time. This level of awareness is the first step to truly conscious energy use, where you can make decisions informed by your lifestyle and values.


Created to Disrupt, Built for Peace of Mind
We recognize that trust is rooted in dependability. The WIT 4K-HU is designed with a single-minded commitment to resilience and performance consistency. It performs with quiet certainty, immune to common weather fluctuations, providing your home with a continuous power source without disruption. Reliability is the foundation of your peace of mind. You can focus on the day ahead, knowing your energy ecosystem is safeguarded, with layers of built-in protection, preventing issues before they occur.
Smooth Integration for a Simplified Lifestyle
The hallmark of our modern technology is its ability to integrate unnoticed into your life. The WIT 4K-HU really delivers in this core principle. Its compact, stylish form guarantees that it will fit into your home, not complicate it. It reminds you that it is simple to operate for everyone simply by using an intuitive user interface or companion mobile application. Whether you are home or away, you have access to the latest energy ecosystem. You can change settings, look at historical values, and get meaningful updates with ease.


Supporting your Sustainable Journey
Acquiring this inverter is proactive step toward your personal self-sufficient and sustainable future. It allows you to utilize more of your energy production and reduce your dependence on the traditional grid. It safely uses all the solar energy you produce, and it essentially transforms your home into your own power plant. It can substantially decrease your electricity cost while also lowering your carbon footprint. This is not just a product; it's a partnership in your journey towards energy independence and stewardship of the planet.
We Promise: Quality and Support You Can Trust
Your investment is safeguarded by Growatt's legacy of quality and a global network of support. From a straightforward installation process to comprehensive warranty coverage, we ensure your experience is hassle-free. Our commitment extends beyond the sale, providing you with the confidence that comes from choosing a brand renowned for durability and exceptional customer care.


environment-friendly
We always use natural wood and log as materials, without any splicing or chemical processing, which is natural, environment-friendly and of good quality. Give your home the best touch and atmosphere.
Technical Parameters
|
Datasheet |
Growatt WIT 4K-HU Inverter |
| Input data (PV) | |
| Max. recommended PV power (for module STC) | 6400W |
| Max. input voltage | 1000V |
| Start voltage | 180V |
| Nominal voltage | 600V |
| MPPT voltage range | 150V-850V |
| Max. input current per MPP tracker | 40A |
| Max. short-circuit current per MPP tracker | 50A |
| No. of PV strings per MPP tracker | 2 |
| No. of MPP trackers | 1 |
| Input/Output AC (Including the Gen Port) | |
| AC input/output nominal power(Grid) | 8000W/4000W |
| Max. AC input/output apparent power(Grid) | 8800VA/4400VA |
| Max. input/output current(Grid) | 13.4A/6.7A |
| Max. input current(GEN/AC couple) | 12.2A |
| Max. continuous AC passthrough current | 50.1A |
| Nominal AC voltage/range | 220V/380V, 230V/400V, -15%~+10% |
| Nominal AC grid frequency/range | 50/60Hz, 45~55Hz/55-65 Hz |
| THDi | <3% |
| AC grid connection type | 3P3W+PE/3P4W+PE |
| Battery data (DC) | |
| Battery type | Lead-acid or Lithium-ion |
| Battery voltage range/Rated voltage | 40-60V /51.2V |
| Max charging and discharging current | 110A |
| BMS communication | RS485/CAN |
| Backup power (AC)* | |
| Rated AC output power | 4000W |
| Max. AC apparent power | 2 time of rated power, 10s |
| Rated AC output voltage | 220V/380V, 230V/400V |
| Nominal AC output frequency | 50/60Hz |
| Max. output current |
12.2A@220V 11.6A@230V |
| THDv | 3% (Linear load) |
| Load unbalance | 100% three-phase unbalanced |
| On/off grid transfer time | 10ms |
| Efficiency | |
| Max. efficiency | 97.60% |
| European efficiency | 97.00% |
| MPPT efficiency | 99.90% |
Professional Integration and Support
The WIT 4K-HU can be easily installed by certified solar professionals to allow for the most effective installation features, performance, and configuration for your systems. Growatt has a comprehensive support network for all of the products in its catalog, which includes service resources and technical support to ensure proper installation and performance for the life of the product. When your system is professionally installed, you can rest assured that all components of your system are working together effectively to maximize the value of your solar investment while maintaining the warranty and performance contract for your system.
Firmware updates and ongoing remote monitoring enable your system to operate at high performance for the life of the product. These support features ensure that your inverter continues to be at the forefront of technology standards, improving energy management capabilities as energy management needs and technology advances. Through professional installation and the layered support service options, consumers can rest assured that they have the complete energy solution that continues to operate effectively, year after year.
FAQ
Q: What is the main advantage of adding battery storage to my solar system?
Answer:It allows you to store excess solar energy generated during the day for use at night or during power outages, significantly increasing your energy independence.
Q: How long can a residential solar power system last?
Answer: With proper maintenance, a high-quality solar system can reliably produce electricity for 25 years or more.
Q: Will my solar system work during a blackout?
Answer: Only if it includes a battery backup. Standard grid-tied systems without batteries automatically shut off for safety during a blackout.
Q: What is net metering?
Answer: It's a billing mechanism where you earn credits for sending your excess solar electricity back to the grid, which can offset your future energy bills.
Q: How much maintenance do solar panels typically need?
Answer: They require very little maintenance. Occasional cleaning to remove dirt, dust, or debris is usually sufficient to maintain optimal performance.
Q: Does a solar system work on cloudy or rainy days?
Answer: Yes, though at a reduced efficiency. Solar panels can still generate electricity from diffused sunlight, but output will be lower than on bright, sunny days.
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