0.75 kW Three Phase Solar Pump Inverter

High performance DC to AC 0.75 kW / 1 hp solar pump inverter on sale, MPPT PV 450VDC to 750VDC or three phase AC power input, three phase 220/380/480V AC output, compatible with popular solar arrays & three-phase asynchronous motors.
SKU: GK330-R7D-3B
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Delivery date: 6-12 days

0.75 kW solar pump inverter/variable frequency drive, built-in Maximum Power Point Tracking controller system, drive centrifugal pump, irrigation pump, axial flow pump,etc.


Basics Model GK330-R7D-3B
Capacity 0.75 kW (1 hp)
Weight 2.5 kg
Product dimension 189.5*167*120 mm
Input Feature Input voltage DC 260~350V, recommend DC 300~350V for 3-phase 220/230/240V motor
DC 450~750V, recommend DC 600~700V for 3-phase 380/400/415/440/460/480V motor
Three phase 220/380/480V AC (±15%)
Vmp/Voc voltage VMP≥560V, voc≤800V
Rated input current 5 A at 220V
3.4 A at 380/480V
Input frequency 47~63 Hz
Input power of solar panel About 1.5 times the solar pump inverter rated power
Output Feature Output voltage Three phase 0~rated input voltage
Rated output current 3.8 A at 220V
2.1 A at 380/480V
Output frequency 50Hz/ 60Hz (output 0-300Hz please contact us)
DC 270~320V corresponds to 0-50Hz for 220V AC, DC 450~550V corresponds to 0-50Hz for 380/480V AC
Control        Control mode SVPWM, SVC
Motor type Asynchronous motor
Speed ratio Asynchronous motor 1:100 (SVC)
Speed control accuracy ±0.2%(SVC)
Speed fluctuation ±0.3%(SVC)
Torque response <20ms (SVC)
Torque control accuracy 10%(SVC)
Starting torque 0.25 Hz / 150% (SVC)
Overload capability 150% of rated current: 1 minute
150% of rated current: 10 seconds
200% of rated current: 1 second
Running control Frequency setting method Digital settingAnalog setting
Pulse frequency setting
Multi-step speed running settingSimple PLC setting
PID setting, MODBUS communication setting
Shift between the set combination and set channel
Operation method Keyboard/ terminal/ communication
Auto-adjustment of voltage Keep a stable voltage automatically when the gird voltage transients
Fault protection Overcurrent, overvoltage, undervoltage, overheating, phase loss, overload, etc.
Special functions for PV water pumps Maximum power tracking, pre-warning at weak light, auto wake up at strong light,
Pre-warning when full water, auto wake up at low water level,
Underload pre-warning and protection of water level sensor,
When pre-warning, the inverter is in stand-by
Environment Environment temperature -10℃~40℃ (environment temperature is among 40℃~50℃; please use it with derating)
Storage temperature -20℃~65℃
Environment humidity Less than 90 % R.H, not exceeding 90% R.H
Altitude, Vibration Below 1000 m, below 5.9m/s² (=0.6g)
Cooling method Forced cooling and natural air cooling
Enclosure rating IP 20
Warranty 18 months


  • Solar pump inverter adopts advanced MPPT control technology, real-time detection of solar panels power voltage, tracking the highest voltage and current, efficiency is as high as 98%.
  • It can enter automatically to sleep mode when the intensity of sunlight is weak, as well as can exit the sleep mode when the intensity of sunlight is becoming strong.
  • Automatic sleep when on high-water level and automatic restart when on low-water level to realize automatic control through water level.
  • Multiple power supply design, power input can be solar energy photovoltaic DC power supply (DC 260~350V, DC 450~750V), can also be single phase or three phase AC power, simple wiring.
  • Smart operation, water level detection and operation panel to prevent overflow, dry pumping.
  • Protect itself in trouble and improve the reliability of whole system.
  • The bypass- AC source which runs automatically when the sun is Not sufficient or absent.

solar pump inverter wiring application

Tips: Solar pump inverter for agricultural irrigation
The traditional agricultural irrigation is to work with diesel-driven pumps. The cost of diesel is expensive and not environmentally friendly.
Today, many farmers use solar pump systems (solar panel, solar pump inverter, pump) to irrigate crops. These devices are not only environmentally friendly but also help them solve the problem of agricultural irrigation.
When there is sunlight, the solar panels generate DC power, and the DC power generated by the solar energy is converted into AC power for AC motors through solar water pump inverter. At the same time, the solar pump inverter assumes the role of a controller for the pump/AC motor.

Products specifications
Attribute name Attribute value
User Manual

PDFSolar Pump Inverter User Manual

Existing reviews
The best solar pump inverter!
To be honnest, I bought several inverters here and everything goes great. Therefore, I couldn't help a writing hight rating. The shopping experience is wonderful. You really should have a try.
William Ben | 4/29/2022 1:02 AM
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