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
sine wave becomes narrower and the voltage width in the center of the sine wave is widened and the switching element is always operated in a direction at a certain frequency in a half cycle, A pulse wave train (pseudo sine wave). Then let the pulse wave form a sine wave through a simple filter
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
Photovoltaic inverters for grid-connected photovoltaic power generation systems are primarily capable of receiving DC power from photovoltaic arrays and converting them into sine-wave currents of the same frequency and in phase with the access grid for powering the grid or local loads.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
light is obtained by the electrons of the semiconductor device, thus generating electrical energy. This energy conversion of light energy into energy, that is, solar cells. Solar cells, like transistors, are made of semiconductors. Its main material is silicon, and there are some other alloys. High-purity silicon used in the manufacture of solar cells is subject to special purification. Solar cells as long as the sun or light exposure,
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
DC voltage and AC side voltage does not matter, the general PV inverter AC output is 400V / N / PE. With no isolation transformer and output voltage does not matter, grid-connected inverter is the regulation of current, and network voltage depends on the grid voltage. And the grid before the inverter will detect the grid voltage, meet the conditions will be network.
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
Inverter main circuit need to have a control circuit to achieve, generally have square wave and sine wave two control methods, square wave output inverter power supply circuit is simple, low cost, but low efficiency, harmonic components. Sine wave output is the development trend of the inverter, with the development of microelectronics technology, there are PWM function of the microprocessor has also come out, so the sine wave output inverter technology has matured.
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?
The difference is that the current at low voltage and the grid is large, the current is small when the voltage is small, followed by the low voltage crossing parameter setting problem (such as PV inverter integrated with inverter and low voltage crossing function, not all photovoltaic inverter
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Offline generally need energy storage, not to send energy online. Power grid has no right to interfere.
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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