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.
| Type | NB48-20KSZ | NB96-20KSZ | NB120-20KSZ | NB240-20KSZ | |
|---|---|---|---|---|---|
| DC Input | Input rated voltage | 48 VDC | 96 VDC | 120 VDC | 240 VDC |
| Input rated current | 463 A | 231 A | 185 A | 93 A | |
| Input DC voltage range | 40-62VDC | 80-124 VDC | 100-155 VDC | 200-310 VDC | |
| AC Input (AC Bypass) |
Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC | |||
| Input rated current | 55.5A / 30A / 29A | ||||
| Bypass transfer time | ≤100ms (Can be customized ≤4ms version) | ||||
| AC Output | Output rated power | 20KW | |||
| Output rated voltage & frequency | 220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz | ||||
| Output rated current | 55.5A / 30A / 29A | ||||
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ±2% | ||||
| Output frequency accuracy | 50Hz / 60Hz ± 0.05% | ||||
| Waveform distortion (THD) | ≤3% (Linear load) | ||||
| Dynamic response time (0→100%) | 2ms | ||||
| Power factor (PF) | 1 | ||||
| Overload capacity | 120%, 5 minutes / 200%, 3 seconds | ||||
| Crest factor (CF) | 3:1 | ||||
| Inverter efficiency | 94% | ||||
| Working Environment | Dielectric strength | 1500VAC, 1 minute | |||
| Noise (1m) | ≤50dB | ||||
| Ambient temperature | -20℃ ~ +60℃ | ||||
| Humidity | 0~90%, No condensation | ||||
| Altitude | <6000m (Higher than 2000m rated power should be reduced) | ||||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | ||||
| Pure Sine Wave | Yes | ||||
| Equipped with copper transformer | Yes | ||||
| Communication mode | RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) | ||||
| Solar Charger / AC Charger / Generator Port | Optional, available | ||||
| Size & Weight | 520×1160×1350 mm | 280 kg | ||||
| Type | NB120-30KSZ | NB240-30KSZ | NB380-30KSZ | |
|---|---|---|---|---|
| DC Input | Input rated voltage | 120 VDC | 240 VDC | 380 VDC |
| Input rated current | 278A | 139 A | 88 A | |
| Input DC voltage range | 100-155 VDC | 200-310 VDC | 320-496 VDC | |
| AC Input (AC Bypass) |
Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC | ||
| Input rated current | 83A / 45.5A / 43.5 A | |||
| Bypass transfer time | ≤100ms (Can be customized ≤4ms version) | |||
| AC Output | Output rated power | 30KW | ||
| Output rated voltage & frequency | 220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz | |||
| Output rated current | 83A / 45.5A / 43.5 A | |||
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ± 1% | |||
| Output frequency accuracy | 50Hz / 60Hz ±0.05% | |||
| Waveform distortion (THD) | ≤3% (Linear load) | |||
| Dynamic response time (0→100%) | 2ms | |||
| Power factor (PF) | 1 | |||
| Overload capacity | 120%, 5 minutes / 200%, 3 seconds | |||
| Crest factor (CF) | 3:1 | |||
| Inverter efficiency | 94% | |||
| Working Environment | Dielectric strength | 1500VAC, 1 minute | ||
| Noise (1m) | ≤50dB | |||
| Ambient temperature | -20℃ ~ +60℃ | |||
| Humidity | 0~90%, No condensation | |||
| Altitude | <2000m (Higher than 2000m rated power should be reduced) | |||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | |||
| Pure Sine Wave / Copper Transformer | Yes / Yes | |||
| Communication mode | RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) | |||
| Solar Charger / AC Charger / Generator Port | Optional, available | |||
| Size & Weight | 660*1300*1600mm | 360kg | |||
| Type | NB220-40KSZ | NB240-40KSZ | NB380-40KSZ | |
|---|---|---|---|---|
| DC Input | Input rated voltage | 220Vdc | 240Vdc | 380 VDC |
| Input rated current | 202 A | 185 A | 117 A | |
| Input DC voltage range | 180-279 VDC | 200-310 VDC | 320-496 VDC | |
| AC Input (AC Bypass) |
Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC | ||
| Input rated current | 111.2A / 60.8A / 58A | |||
| Bypass transfer time | ≤100ms (Can be customized ≤4ms version) | |||
| AC Output | Output rated power | 40KW | ||
| Output rated voltage & frequency | 220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz | |||
| Output rated current | 111.2A / 60.8A / 58A | |||
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ± 1% | |||
| Output frequency accuracy | 50Hz / 60Hz ±0.05% | |||
| Waveform distortion (THD) | ≤3% (Linear load) | |||
| Dynamic response time (0→100%) | 2ms | |||
| Power factor (PF) | 1 | |||
| Overload capacity | 120%, 5 minutes / 200%, 3 seconds | |||
| Crest factor (CF) | 3:1 | |||
| Inverter efficiency | 94% | |||
| Working Environment | Dielectric strength | 1500VAC, 1 minute | ||
| Noise (1m) | ≤50dB | |||
| Ambient temperature | -20℃ ~ +60℃ | |||
| Humidity | 0~90%, No condensation | |||
| Altitude | <6000m (Higher than 2000m rated power should be reduced) | |||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | |||
| Pure Sine Wave / Copper Transformer | Yes / Yes | |||
| Communication mode | RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) | |||
| Solar Charger / AC Charger / Generator Port | Optional | |||
| Size & Weight | 760*1400*1600mm | 550kg | |||
| Type | NB480-50KSZ | NB380-50KSZ | |
|---|---|---|---|
| DC Input | Input rated voltage | 480 VDC | 380 VDC |
| Input rated current | 115 A | 146 A | |
| Input DC voltage range | 400-620 VDC | 320-496 VDC | |
| AC Input (AC Bypass) |
Allow input voltage range | 220 VAC / 380 VAC / 400 VAC ± 15% VAC | |
| Input rated current | 139A / 76A / 72.5A | ||
| Bypass transfer time | ≤100ms (Can be customized ≤4ms version) | ||
| AC Output | Output rated power | 50KW | |
| Output rated voltage & frequency | 220 VAC / 380 VAC / 400 VAC, 50Hz / 60Hz | ||
| Output rated current | 139A / 76A / 72.5A | ||
| Output voltage accuracy | 220 VAC / 380 VAC / 400 VAC ± 1% | ||
| Output frequency accuracy | 50Hz / 60Hz ±0.05% | ||
| Waveform distortion (THD) (Linear load) | ≤3% | ||
| Dynamic response time (0→100%) | 2ms | ||
| Power factor (PF) | 1 | ||
| Overload capacity | 120%, 5 minutes / 200%, 3 seconds | ||
| Crest factor (CF) | 3:1 | ||
| Inverter efficiency | 94% | ||
| Working Environment | Dielectric strength | 1500VAC, 1 minute | |
| Noise (1m) | ≤50dB | ||
| Ambient temperature | -20℃ ~ +60℃ | ||
| Humidity | 0~90%, No condensation | ||
| Altitude | <2000m (Higher than 2000m rated power should be reduced) | ||
| Production function | Input reverse protection, input under-voltage protection, output overload protection, output short circuit protection, thermal protection | ||
| Pure Sine Wave / Copper Transformer | Yes / Yes | ||
| Communication mode | RS485, Wifi, GPRS, Ethernet (Modbus RTU protocol) | ||
| Solar Charger / AC Charger / Generator Port | Optional | ||
| Size & Weight | 660*1300*1600mm | 450kg | ||
Our company was established in 2004 and acquired two registered trademarks in the same year. After five years of accumulation in 2009, the company gradually matured steadily. The company purchased factory buildings with independent property rights, and relocated to start a new journey. In 2012, the Ministry of Foreign Trade was established to open up markets and begin to expand foreign markets. In 2015, the company achieved rapid development, with 2 invention patents, 6 utility model patents, 1 appearance patents, obtained the "high-tech enterprise certificate" recognition, and obtained the ISO 9001 quality management system certification. In 2018, the company continued to innovate, with four invention patents, six utility model patents, and two software registration rights, and again successfully recognized high-tech enterprises. On July 10, 2019, it passed the certification of intellectual property management system. In 2020, three patents for invention and six patents for utility models were applied for.
1. Our main products are off grid wind turbine controller, On grid wind turbine controller, solar charging controller, wind-light complementary controller, wind-light complementary street lamp controller, On grid inverter, off grid inverter, frequency converter, stabilized frequency power supply, etc.
2. With first-class manufacturing technology, advanced technology and equipment, strong technical force, perfect testing means and personnel management, we have carried out 17 research and development projects in the last three years, completed 16 transformation of scientific and technological achievements, and invested all by ourselves to implement the transformation, averaging 5.3 transformation of scientific and technological achievements each year.
3. We take technological innovation as the basis of enterprise development, annual R&D cost is not less than 20% of sales revenue, and continuously explore advanced technologies in the field of new energy power sources, such as electromagnetic control technology for wind turbines, MPPT technology, yaw wind turbines control technology, wind and solar complementary system Internet of Things monitoring, etc. Now we have five national invention patents for core technologies, twelve utility model patents, and the control technology for wind turbines has reached the advanced international level.
4. We have a complete product quality assurance system and 9001 certification. Perform comprehensive quality control, rigorous test one by one, each performance is superior to the relevant national standards, all products have passed the EU CE certification. Ensure user safety and reliable use. Now our products have been the preferred supporting products for well-known manufacturers. The products export to more than 120 countries and regions, such as Germany, Japan, the United States, the United Kingdom, Canada, Australia, Egypt, Brazil, Saudi Arabia, and have established a good image in the domestic and foreign markets.
5. We are based on the market, pay attention to customers, provide high-quality products, adhere to technological progress, scientific management and standardized operation are the key to our success. We will jointly meet the challenges of the new century, shape a good image outside, and construct the blueprint of a modern enterprise in an all-round and three-dimensional way.