18.5 kW Three Phase Solar Pump Inverter

18.5 kW (25 hp) solar pump inverter / solar variable frequency drive, built-in MPPT controller, intelligent track maximum power point, automatic regulation of pump flow, converts DC 450V-750V from the solar panel to 3-phase AC voltage.

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SKU: GK330-018D-3B

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Delivery date: 6-20 days

Input Voltage (Three Phase) ±15% *

$1,149.00

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Products specifications

User Manual	Solar Pump Inverter User Manual

DC/AC 18.5 kW MPPT based solar Pump VFD, dual mode DC and AC input with strong anti-jamming capability, stable frequency output for solar water pumping.

Specification

Basics	Model	GK330-018D-3B
	Capacity	18.5 kW (25 hp)
	Weight	19 kg
	Product dimension	345230203 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%)
	Rated input current	76 A at 220V 38.5 A at 380/480V
	Input frequency	47~63 Hz
Output Feature	Output voltage	Three phase 0~rated input voltage
	Rated output current	75 A at 220V 37 A at 380/480V
	Output frequency	0~50 Hz DC 270-320V corresponds to 0-50Hz for 220VAC, DC 450-550V corresponds to 0-50Hz for 380/480VAC
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

Features

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.

solar pump inverter wiring application

Tips: Solar AC water pump vs. DC water pump
At present, the DC pump power on the market is relatively small, and the maximum power is about 2KW-3KW. The solar AC pump power can reach more than 100 KW, and the power range is much wider than that of the DC pump.
In terms of use, if the head and water demand are small, a DC pump can be selected. When high lift or high flow is required, then the AC pump can be selected.
A simple example: a DC pump is equivalent to a small car, and an AC pump is equivalent to a bus. In the case of transporting a few people, you can use a small car. When transporting dozens or hundreds of people, the bus is more suitable.
Therefore, there is no good or bad difference between the solar AC water pump and the solar DC water pump, only the environment is different.