NFD Solar inverter for PV pump-Nietz Electric Co.,Ltd

Features

In order to meet the needs of various Pumping applications, series NFD Solar water pump controller uses the the maximum power tracking and the motor drive technology which has been long-tested to maximize the output power of the Solar module, and it can support both the DC input and AC input.

When the sunlight is not strong enough, this controller can be switched into the single-phase AC input or three-phase AC input just like the electric generator or battery. It offers the functions of trouble detection, motor soft start and speed governing, you can use it once you open it and the installment is very convenient.

Specifications

Item		Series NFD
Main control method	Control Method	V/F control, Space vector control.
	Output Frequency Range	0～400.0Hz
	Carrier frequency Setting	0～15kHz
	Frequency Setting Resolution	Digital input: 0.1Hz
	Frequency Setting Resolution	Analog input: 0.1% of max. frequency
	Accuracy of output frequency	0.1Hz
	Overload	Type G: 150% rated current in 60s; 180% rated current in 3s.
	Overload	Type P: 120% rated current in 60s; 150% rated current in 3s.
	Torque control accuracy	Auto boost; customized boot 0.0~20.0%
	V/F control	Can be arbitrarily set line V/F
	PLC, Multi-speed operation	Internal PLC or input terminals able can be set 16 section
	Internal PID	it realizes process-controlled closed loop control system easily.
	Voltage	0～220VAC; 0～380VAC
	Acceleration and deceleration time settings	0～999.9s Respectively provided acceleration and deceleration time
	Communication methods	RS -485
Operation	Running command channel	Operation panel, control terminal, Seriel communication port
	Frequency source	Digital setting, analog voltage setting, analog current setting, pulse setting and serial communication port setting.
	Input terminal	six digital input terminal; two analog input terminal: one just support input voltage 0～10V (FIV), other support input current 4～20mA (FIC)
	Output terminal	one digital output terminal ( M01); one relay output terminal ( RA, RB, RC)
	Output terminal	one analog output terminal, support output voltage 0～10V (FOV)
Keyboard	LED screen	display parameters
Keyboard	Protection function	Motor short-circuit detection at power-on, input/output phase loss protection, over current protection, overvoltage protection, under voltage protection, overheat protection and overload protection.
Environment	Installation location	Indoor, free from direct sunlight, dust, corrosive gas,combustible gas, oil smoke, vapour, drip or salt.
	Altitude	Lower than 1000 m
	Ambient temperature	-10°C ～40°C (de-rated if the ambient temperature is between 40°C and 50°C)
	Humidity	Less than 95%RH, without condensing
	Vibration	Less than 5.9 m/s2 (0.6 g)
	Storage temperature	-20°C～60°C
	Class protection	IP20

Application

NFD Solar inverter for PV pump

Mainly used in the project of water diversion for the planting and protecting of the river water soil losing. Normally solar energy is widely applied for those region where is no power or power unstable. The system can be adapted into the irrigation for the Economic crops (Barren mountain forest ), water supply for the Desertification control of the natural ecological protection zone. We can using the system to provide the living water for the region where is lack of electricity in remote mountainous areas, farms, schools, hospitals, factories and household.

Widely used in desert landscaping, desert control, agricultural irrigation, domestic water supply, urban water, gas pump systems, water purification systems, water desalination and so on.
The series NFD AC solar pumping system mainly consists of PV array, mounting system, combiner box, NFD solar pump controller, submersible/surface AC pump, reactor , liquid level switch and water tank, shown as Figure 1.

Solar Pumping System-5.png

NDF Solar Pumping System-6.png

This system does not have storage batteries, and it is completely powered by solar energy, thus realizing a cost-effective purpose.

An appropriate water tank can be prepared to store water for later use.

High-efficient AC submersible/surface pump is adopted for the system, thus satisfying different requirements.

The system is characterized by Maximum Power Point Tracker technology, regulating the work of the pump automatically and realize the maximum generated energy for the system.

Automatic control is adopted for the system such as: automatic start-up and shut-off respectively in the morning and evening, automatic shut-off for full tank and water shortage in the well.

Protection measures are taken for the rotation jam of the pump, 3-phase equilibrium etc. thus prolonging the service lifetime of both the pump and controller.

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Input voltage,V	Power range, kW
220/ single phase	0.4 - 1.5
380 / 3 phase	0.75 - 22