Three phase 4 wire 50Hz/ 60Hz low frequency off grid inverter for sale, no battery storage system, two kinds of start mode: Step-down voltage start and variable frequency start. 80kW pure sine wave inverter, wide DC input voltage range to 220V/ 380V/ 480V AC using in solar power system.
- Two kinds of start modes: Step-down voltage start and variable frequency start. Customers can set start mode according to the type of their load.
- The output voltage can be set between -40 % to +20 % of the rated voltage. And the output voltage with an accuracy ±1%.
- Pure sine wave output. With a good dynamic response of less than 50MS, the waveform distortion rate is smaller, with higher conversion efficiency and stable output voltage.
- Adopts black pure aluminum radiator, which confirms the best radiating performance.
- Powerful data display function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, power consumption (kWH), time and date, temperature, and fault code display.
- Wide input voltage can work without battery and solar charge controller, save more cost, and with MPPT wide voltage input function, maximum use of solar power.
||CE, UL, SA, SAA, VDE
||AC input voltage is the same value as the AC output
||240V/ 300V/ 360V/ 480V DC (can be customized)
||167A @480V DC
||Rated output power
||Pure sine wave
||208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 460V/ 480V (optional)
||3 phase 4 wire+PE wire (single phase/ split phase can be customized, please contact us by email)
|Rated phase current
||121A @380V AC
||50Hz or 60Hz
||150%, 5 seconds
|Waveform distortion rate
|Dynamic response (0 to 100% load)
|Electrical insulation properties
||RS485 (optional), can remote control the start/stop of the inverter and convey the data as below:
1. Input DC current
2. Input DC voltage
3. Output AC current
4. Output AC voltage
5. Power consumption (kWH)
6. Some fault information
|Battery charging function
||Can be customized, please contact us
||Input reverse polarity, under voltage, over-voltage, output over-current, short circuit, overheating
||No automatic recovery, need to restart the machine
||Noise (1 meter）
|Degree of protection
||The above parameters are for reference only, and can be customized according to the customer's requirement!
Tips: Cooling method of a power inverter?
At present, there are two main ways of cooling the inverter: One is natural cooling, and the other is forced air cooling.
1. Natural cooling
Natural cooling means that the local heating device is cooled to the surrounding environment to achieve temperature control without using any external auxiliary energy. This usually includes three main heat transfer modes: Heat conduction, convection, and radiation.
Natural heat dissipation or cooling is often applied to low-power devices and components that do not require high-temperature control, low heat flux density for device heating, and were sealed or densely assembled devices are not (or are not required to) use other cooling techniques.
At present, mainstream single-phase inverters on the market and three-phase inverters below 20 kW, most manufacturers adopt natural cooling.
2. Forced air cooling
Forced air cooling is mainly a method of forcing the heat emitted by the device by means of a fan or the like to force the air around the device to flow. This method is a heat dissipation method that is easy to operate and has obvious effects.
This cooling method can be used as much as possible if the space between the components within the component is suitable for air flow or for the installation of a local heat sink. The method of improving the forced convection heat transfer capability increases the heat dissipation area and generates a relatively large forced convection heat transfer coefficient on the heat dissipation surface. Increasing the heat dissipation area of the surface of the heat sink to enhance the heat dissipation of electronic components has been widely used in practical engineering.