Off-Grid Solar Inverter 300W

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Product Description:

Features

Pure sine wave output (THD<3%)

Power ON-OFF switch

Input voltage range:-20% ~ +30%

Output voltage regulation:±10%

Thermo control cooling fan

Two-color indicators display power and fault status

Protections:short circuit, overload, over temperature,

Low battery voltage, over battery voltage, lack-voltage alarm.

Topology: Pull-push

Approvals: CE mark / EMC / LVD/ RoHS

1 year warranty (Remarks: Customizable input voltage such as 36v, 72v, 96v,110v;output voltage such as 120v, 130v, 200v,240v, etc; )



Order model No

P300w-12A

P3000w-24A

P300w-48A

P300w-12B

P3000w-24B

P300W-48B

Output

AC voltage

110V±10%

220V±10%

Rated power

300W

300W

Peak power

600W

600W

Waveform (THD)

Pure sine wave (<3%)

Pure sine wave (<3%)

Frequency

60Hz ±0.3% or 50Hz ±0.3%

Input

NO load current draw

<0.34A

<0.32A

<0.2A

<0.34A

<0.32A

<0.2A

DC voltage

12V

24V

48V

12V

24V

48V

DC Voltage range

9.5~16V

19~32V

38~63V

9.5~16V

19~32V

38~63V

Efficiency

> 86 %

> 88 %

> 90%

> 86 %

> 88 %

> 90 %

DC connector

Cables With Clips or Car Adaptor

Cables With Clips or Car Adaptor

Protection

DCLow voltage alarm

10.3~10.6V

20.6V ~21.2V

41.2V~42.4V

10.3~10.6V

20.6V ~21.2V

41.2V~42.4V

DC Low voltage shut down

9.4~9.6V

18.8~19.2V

37.6~38.4V

9.4~9.6V

18.8~19.2V

37.6~38.4V

Over load

Shut Off Output

Shut Off Output

DC Over voltage shut down

15.8~16.2V

30~32V

60~63V

15.8~16.2V

30~32V

60~63V

Over thermal

Shut Off Output Automatically

Shut Off Output Automatically

Fuses

Short Circuit

Short Circuit

Environment

Working temperature

-10°c ~ +50°c

-10°c ~ +50°c

Working humidity

10%~90%RH

10%~90%RH

Storage temperature

-20°c ~ +50°c

-20°c ~ +50°c

Work altitude

≤1000m

Package

Machine Size(mm)

220*118*63

220*118*63

Packing Size(mm)

250*120*66

250*120*66

Net Weight

1.3kg/unit

1.3kg/unit

Gross Weight

1.4kg/unit

1.4kg/unit

Packing Mode

Carton

Carton

Other

Star

Soft Star

Soft Start

Cooling Ways

Cooling Fan

Cooling Fan


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Q:What is the PV inverter starting voltage
Photovoltaic inverter, also known as power regulator, according to the inverter in the use of photovoltaic power generation system can be divided into two kinds of independent power supply and grid. According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter. For the inverter for the grid system, depending on whether the transformer can be divided into transformer-type inverter and transformer-free inverter.
Q:PV grid-connected inverter can directly load it?
Grid-connected inverter is usually equipped with island protection function, can only receive the power grid, if the load directly, the output is disconnected.
Q:PV grid-connected inverter and independent inverter in the control of what is the difference
The independent inverter in the output voltage phase amplitude of the frequency control is initially set good. Independent inverter, you should refer to off-grid inverter, do not need to consider the grid situation.
Q:What are the methods of photovoltaic grid-connected inverter control
The square wave output of the inverter using pulse width modulation integrated circuits, such as SG3525, TL494 and so on. Practice has proved that the use of SG3525 integrated circuits, and the use of power FET as a switching power components, to achieve high performance of the inverter, because the SG3525 has a direct drive power FET capability and has an internal reference source and operational amplifiers and Undervoltage protection, so its peripheral circuit is very simple.
Q:Is the PV inverter a current source or a voltage source?
According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter.
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
Have a low pressure through the function set, low pressure through the scope of the project requirements, grid and network requirements and the actual situation of the design), low voltage grid to pass the voltage range is less than the medium pressure, parameter settings are not sensitive and complex.
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.
Q:Generally a large grid-connected photovoltaic power plant will have several inverters
, This method is simple to design, easy maintenance, but also for the power grid harmonics smaller, good power quality!
Q:Photovoltaic grid-connected inverter problem
Hello, the definition of the zero line is not caused by the transformer three-phase electric tail connection? I now do not understand why there is no isolation transformer AC output marked is N (zero line), and it is not the transformer three-phase power of the tail connection leads to, this is the zero line? The The
Q:The working principle of photovoltaic grid - connected inverter
Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, the power transistor to adjust the output pulse width, the output AC voltage RMS that changes. Since the circuit has a freewheeling circuit, even if the inductive load, the output voltage waveform will not be distorted. The disadvantage of this circuit is that the upper and lower arms of the power transistor are not common, so you must use a special drive circuit or use isolated power supply. In addition, in order to prevent the upper and lower arm co-conduction, must be designed to turn off after the conduction circuit, that must be set dead time, the circuit structure is more complex.

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