Off-Grid Pure Sine Wave Solar Inverter 200W, DC 24V to AC 220/230V,STI200

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Description

STI series is a sine wave power frequency inverter which can convert 12V or 24V DC to 220VAC or 230VAC 50Hz based on full digital and intelligent design. The inverter can be applied in many fields especially for solar photovoltaic power system.

 

 

Features:

·Complete isolation-type inverter technology, noiseless output
·Adoption of advanced SPWM technology, pure sine wave output
·Dynamic current loop control technology to ensure inverter reliable operation.
·Wide DC input voltage range
·Excellent EMC design
·Low output harmonic distortion(THD≤3%)
·LED indicators display input voltage range, load power range, normal output & failure state
·Optional energy saving mode
·Wide working temperature range (industrial level)
·Continuous operation at full power

 

Protections

·Output Short Circuit protection
·Overload protection
·Input reverse polarity protection
·Input low voltage protection
·Input over voltage protection
·Inverter abnormal protection
·Overheating protection

 

Specification:

Model

STI200-12-220

STI200-24-220

STI200-12-230

STI200-24-230

Nominal battery voltage

12V

24V

Input voltage range

10.5~16V

21~32V

Consumption no load(ON)

≤4W

≤5W

Consumption no load (Saving)

≤2W

≤2W

Output voltage

AC220/230V±3%

Continuous power

200VA

Power 10sec

300VA

Power 1.5sec

400VA

Surge power

640VA

Output mode

Single Phase

Wave form

Pure Sine Wave

Frequency

50Hz±0.2%

Distortion THD

( resistive load)

≤ 3%

≤ 2%

Efficiency at rated power

≥81%

≥85%

Max. efficiency

≥88%

≥89%

Dimension

315*166*101mm

Net  weight

4.5kg

Working  

temperature

-20℃~ +50℃

Humidity

< 95%(non-condensation)

Altitude

< 5000m(Derating to operate according to IEC62040 at a height exceeding 1000 m)

 

FAQ

Can a solar powered LED lighting without inverter?

Of course you can run lights without inverters. Both LEDs and incandescent lamps are quite happy on DC. And there are fluorescent ballasts that take a DC input (although they do have a sort of inverter inside). I have one in my shed and it has been working just fine for at least 15 years. It is very simple, easy and efficient. You can do away with the electrical code for wiring, lower you cost. Use less energy and lower the cost to install. In fact is we did this to power may of our day to day items we would also lower the demand for power. 

Keep in mind this goes against every manufacturer and government policy and you will be shut down, squashed and run out of town for even talking about this, or at least you used to. I am working on a way to use the current wiring in a home to have direct solar, batter bank lighting. By coming off the grid for your lighting and many other functions, a power outage would hardly make a difference to your home.

 

Does inverter long warranty mean high quality?

SMA did bump up the warranty to 10 years when CSI demanded all inverter manufacturers to do so. The European Sunny Boys are only warrantied for 5 years. 

iPhones only have a one year warranty. Does that mean Apple products aren't reliable? Enphase offers a 25 year warranty on their inverters
 but only one year on their monitoring. Does this mean their monitoring is not as reliable as their inverter? Of course not. 

Offering long warranties have very real costs, especially for publicly traded companies like SMA. If we were to offer a 25 year warranty, we would have to hold a higher reserve on our balance sheet, making our products more expensive. We think that our customers would rather have our high quality products at a lower cost.
 

Start-ups invariably offer long warranties to make up for lack of track record or the perception of quality problems. As the unfortunate recent events at Solyndra have shown
, long warranties offered by start-ups can have limited practical value. 

Analogies can be drawn to the wind industry: in the early days, customers requested very long warranties (20 years or so), since it was the wild west and no one had a clue about long term O&M requirements for these big new turbines. Now that the wind industry has matured, turbine warranties are again very short (2 years is typical) since the large suppliers have a track record of shipping quality product that does not fail when properly maintained. You could say that PV today is like the wild west environment in wind 10 years ago.

 

 

 

 

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Q:After the PV inverter, how to achieve the same period before the network?
It can automatically detect the generator and the grid frequency and voltage, in the frequency, voltage, phase are in line with the requirements of the grid to set the time before the release of the closing signal, so that it can be safely and securely connected.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
Solar photovoltaic power generation technology is the use of solar cells, the photovoltaic effect of semiconductor materials, solar radiation can be directly converted into a new type of power generation system, solar energy is a radiant energy, solar power means --- to direct conversion of sunlight Into electricity,
Q:Installation and maintenance of photovoltaic grid - connected inverter
photovoltaic systems Power generation system used in the cable must be connected firmly, good insulation and specifications appropriate.
Q:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
Grid-connected inverter is generally used with large-scale photovoltaic power plant system, a lot of parallel PV string is connected to the same set of inverter DC input, the general power of the use of three-phase IGBT power module, power
Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
Which depends on the grid inverter in the absence of the grid there is no independent operation of the function of the general grid inverter is the current type, only responsible for the power to the grid, the voltage is maintained by the grid,
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:Is the PV inverter a current source or a voltage source?
Inverter is a kind of semiconductor device composed of power adjustment device, mainly used for DC power into AC power.
Q:The function of photovoltaic grid - connected inverter
Finally, a sinusoidal AC output for a grid-connected photovoltaic power generation system is generated by a low-pass filter.
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.

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