Low price use new energy generate electricity 50 kw solar inverter off grid hybrid solar inverter hybrid
Product introduction
Function Introduction
Compared with the traditional off grid inverter system, the biggest difference between the new off grid inverter system and the traditional off grid inverter system is that there is no need for batteries or a small amount of batteries, so as to reduce the initial investment cost, make full use of new energy to generate electricity, and achieve the purpose of reducing the use of grid electricity or diesel generator. The new off grid inverter system consists of solar panels, combiner box, new off grid inverter and other components.
The electric energy generated by solar panels is directly connected to the new-type off grid inverter after converging through the combiner box, and then DC is converted to AC through the new-type off grid inverter for the use of load equipment.
The diesel engine / power grid is connected through the AC input terminal of the new off grid inverter, and it will participate in the inverter after rectification. When the power supply of solar panel is insufficient, it will automatically switch and supplement, and the switching time is 0ms.
In the system with a small number of batteries, some solar panels are connected to the controller to charge the batteries. The battery plays a supporting role in the switching process between solar panels and diesel generator, so as to avoid power failure of the system during the switching process.
In some application, the new off grid inverter can also be used in wind power, hydropower and other systems.
Performance Characteristics
- The drive protection is Mitsubishi inner works, and the perfect drive protection circuit ensures the reliable operation of IGBT.
- Fast dynamic response (Patented technology): Double closed-loop feedback circuit, internal loop current environmental protection certificate non-distorted non-linear load waveform; external loop voltage environmental protection certificate sudden load voltage drop ≤ 1%, reaction speed ≤ 2 ms.
- Reasonable combination of components, inversion efficiency ≥ 90%.
- Output frequency 50/60Hz switching to meet different device power requirements, other frequencies can be customized.
- Built-in isolation transformer with pure sine wave output and resistance, induction, capacitance and mixed load.
- Reasonable airway design and high heat dissipation efficiency.
- Strong carrying capacity, can withstand 200% power impact for 10 seconds.
- Friendly interactive interface, touch-display integration.
- Display DC input voltage, AC output voltage, frequency, power, temperature, status indication and fault indication.
- Digital technology design, high adjustability, DC over/under voltage, DC under voltage recovery, output over/under voltage, output overload can be set within a certain range.
- Wide voltage input range, 48-800V DC input, customizable input voltage.
- Full and efficient protection function, to protect against damage under any load, with input connection back protection, input over/under voltage protection, output under/voltage protection, IGBT drive protection, output over load protection, current limit protection, overheat protection, three-phase unbalance protection.
- Accurate switching of solar panels, batteries and grid power to maximize energy utilization.
- The generator start dry contact can start the generator in advance before the power supply is under voltage, and the start voltage can be set.
- Optional: Bypass input.
- Communication: RS485, USB, WiFi, GPRS, CAN. Data can be accessed to the Internet of Things, monitored remotely, and queried for historical data.
- Communication protocol: Modbus RTU.
| Type |
SPI 220-50K |
SPI 380-50K |
SPI 440-50K |
| Solar Input |
| Solar power |
50KWp |
50KWp |
50KWp |
| Solar panels voltage (Vmp) |
450V |
525V |
525V |
| Battery (optional) |
| Battery rated voltage (DC) |
360V |
420V |
420V |
| Input voltage range (DC) |
300-450V |
350-525V |
350-525V |
| Three-phase AC input |
| Allow voltage range (AC) |
220V ± 15% |
380V ± 15% |
440V ± 15% |
| Input rated current |
145A |
84A |
73A |
| Transfer time |
0ms |
| AC bypass(optional) |
| Allow AC input voltage range |
220V ± 15% |
380V ± 15% |
440V ± 15% |
| Input frequency accuracy |
50Hz/60Hz ± 10% |
| Bypass transfer time |
≤ 100ms (≤ 10ms optional) |
| Three-phase AC output |
| Rated power |
50KW |
| AC Rated voltage |
220V |
380V |
440V |
| Rated phase current |
130A |
76A |
66A |
| Output voltage accuracy |
220V ± 1% |
380V ± 1% |
440V ± 1% |
| Output frequency accuracy |
50Hz/60Hz ± 0.05% |
| Waveform distortion (THD) |
≤ 3% (Linear load) |
| Overload capacity |
110% for 10 minutes, 200% for 10 seconds |
| Crest factor (CF) |
3:1 |
| Inverter efficiency |
> 90% |
| Working Environment |
| Dielectric strength |
1500VAC, 1 minute |
| Noise (1m) |
< 50dB |
| Ambient temperature |
-10°C ~ +50°C |
| Humidity |
0 ~ 90%, No condensation |
| Altitude |
< 2000m (Higher than 2000m rated power should be reduced) |
| Protection function |
| Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection |
| Size |
1000mm * 1000mm * 1640mm |
| Weight |
500KG |
Product application scenario
BUYERS FEEDBACK
COMPANY PROFILE
Our manufacturing facility was established in 2004. After five years of accumulation, by 2009, our operations steadily matured and we relocated to self-owned factory premises to begin a new journey. In 2012, we established our Foreign Trade Division to expand into global markets. By 2015, we achieved rapid development, securing 2 invention patents, 6 utility model patents, and 1 design patent. We were recognized as a national High-Tech Enterprise and obtained ISO 9001 quality management system certification. In 2018, we continued to innovate, earning four more invention patents, six utility model patents, and two software copyrights, while successfully renewing our High-Tech Enterprise status. In 2019, we passed the intellectual property management system certification, and in 2020, we applied for an additional three invention patents and six utility model patents.
1. Our main product line includes off-grid wind turbine controllers, on-grid wind turbine controllers, solar charging controllers, wind-solar hybrid controllers, wind-solar hybrid street lamp controllers, on-grid inverters, off-grid inverters, frequency converters, and stabilized frequency power supplies.
2. Leveraging advanced manufacturing technologies, first-class equipment, strong technical capabilities, rigorous testing protocols, and robust personnel management, we have implemented 17 research and development projects over the past three years. This has resulted in the successful commercialization of 16 scientific and technological achievements, averaging 5.3 achievements transformed annually.
3. We place technological innovation at the core of our enterprise development, investing no less than 20% of sales revenue annually into R&D. We continuously explore advanced technologies in the field of new energy power sources, such as electromagnetic control for wind turbines, MPPT technology, yaw control technology, and wind-solar hybrid IoT monitoring. We currently hold five national invention patents and twelve utility model patents for core technologies.
4. We maintain a complete product quality assurance system backed by ISO 9001 certification. Comprehensive, unit-by-unit testing ensures that each product exceeds relevant national quality standards. All products have passed EU CE certification, ensuring reliable operation and user safety. Our products are the preferred choice for major domestic manufacturers and are exported to over 120 countries and regions including Germany, Japan, the United States, the United Kingdom, Canada, Australia, Egypt, Brazil, and Saudi Arabia.
5. Guided by market demands and customer needs, we deliver high-quality products supported by scientific management and standardized operations. We are dedicated to meeting new energy challenges while building a modern, progressive global enterprise.
OUR FACTORY
Frequently Asked Questions
Can you provide OEM service?
Yes, we can provide OEM services tailored to your specific requirements.
Can you design the complete solar wind power system?
Yes, we can design the complete system based on your operational and application requirements.
Are you a factory or a trading company?
We are a dedicated manufacturer specializing in wind turbine solar controllers and various types of power inverters.
Is product customization acceptable?
Yes, customization is acceptable. We can manufacture products according to customers' specific requirements.
May I visit your factory?
Yes, you are highly welcome to visit our production facility. Please contact us in advance to schedule.
Can you provide samples?
Yes, we can provide samples for evaluation and performance testing.
Demin Power
