Silicon Solar Monocrystalline Solar Panels 250w

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Tianjin
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Min Order Qty:
10 pc
Supply Capability:
1000 pc/month

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Product Description:

Maximum power(Pm)

190W

195W

200W

240W

245W

250W

250W

255W

260W

Voltage at max. Power  (V)

36.8V

37.0V

37.2V

29.8V

30.0V

29.7V

30.4V

30.6V

30.8V

Current at max. power (A)

5.17A

5.27A

5.38A

8.05A

8.17A

8.43A

8.23A

8.34A

8.44A

Open-Circuit(V)

44.9V

45.1V

45.3V

37.9V

38.2V

37.8V

37.5V

37.6V

37.7V

Short-Circuit (A)

5.54A

5.63A

5.72A

8.58A

8.71A

8.75A

8.72A

8.81A

8.90A

Power Temp.Coeff(/℃)

-0.43%

-0.47%

-0.48%

Current Temp.Coeff(/℃)

0.04%

0.05%

0.04%

Voltage Temp.Coeff(/℃)

-0.32%

-0.34%

-0.34%

Series Fuse Rating  (A)

12

12

15

Ambient Temp.(/℃)

-40~85

Power tolerance

±3%

NOCT

46℃±2

Max-System Voltage

1000V DC(IEC)/600V DC(UL)

Connector

H+S/MC4/MC4 Compatible

Cell typical and quantity

72pcs Monocrystalline silicon(125×125mm)

60pcs Polycrystalline silicon(156×156mm)

60pcs Monocrystalline silicon(156×156mm)

Dimension

1580×808×35mm

1660×994×45mm

1660×994×45mm

Weight

15.8kg

19.7kg

19.7kg

 

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Q:solar panel in a grid tied system?
That would depend on the panels themselves. There are many different specifications when it comes to panels, but if you wanted to be technical, just about any would give some impact - even if it were only a few cents.
Q:automated way to clean solar panels?
Hire Tinkerbell, Disney hasn't had much for her to do lately.
Q:What is the principle of solar panels work?
The sun is irradiated on the semiconductor p-n junction to form a new hole-electron pair. Under the action of the p-n junction electric field, the holes flow from the n region to the p region. The electrons flow from the p region to the n region, and the current is formed after the circuit is turned on. This is the photoelectric effect of the working principle of solar cells.
Q:Is it worth getting solar panels fitted on my roof?
Payback for your investment is 5-25 years, depending on sunny skies, durability of your system, rate of your utility company/taxes, and luck. If you have storm damage, accidents, or equipment failure, add that expense. It would be tough to get full value at the sale of your property, based on actual productivity (kwh produced) and relative condition/durability.
Q:Solar panels on the roof?
Just had them installed on a development of 4 homes and they look goood! So far each user has free electricity during daytime for 3/4 of the year. If you live in a hot country - that's free A/C to keep you cool. The downside is that it is grid-tied so there is no storage, which means that if you use electricity to cook the evening meal - you don't get that free. What we advise to do instead is to make use of slow cookers that cook meals during the day - for FREE, and just serve it up in the evening as it keeps the heat. It would be more effective if you used storage radiators and heated hot water tanks for washing/bathing using it but this hasn't been added yet. It's free power all day - so what is there to complain about? The only catch I have found is that some power companies charge YOU if you export power to the grid - so just watch out for that, and design your system to avoid this if this applies, but most just don't pay anything - so you may as well use what you get.
Q:Home made solar panel?
Building your own panels can be an interesting experiment, but if you are looking for solar panels to provide significant, consistent output, you should buy factory made ones. I get lots of calls from people who built their own panels and get a fraction of the advertised output from them. Plus, factory built panels will last 40 - 50 years, with a 25 year warranty, how sure are you that you can build something that can withstand the outdoors for that long? The price of panels has dropped a lot this year, plus with rebates and tax credits, it's getting more affordable.
Q:are solar panels worth buying?
There are different kinds of solar panels. The biggest division is between photovoltaic panels that produce electricity and thermal solar panels that produce heat for hot water and space heating. Commercial photovoltaic panels are from 8 to 24% efficient while solar thermal panels are from 60 to 80% efficient. Solar thermal panels especially for hot water have a much higher ROI (return on investment) than photovoltaic panels. A solar hot water system may have a payback period (when savings equal the investment) as short as 3 to 5 years while photovoltaic panels will typically have a payback period between 7 and 5 years. Solar panels especially in times of low interest rates may be a very worthwhile investment with a better return than you can find almost anywhere else. But they are also highly dependent upon your situation. Owning a home with a good southern exposure is a prerequisite.
Q:Using solar panels to replace electrical wiring?
No. solar panels would not solve your problems and are usually not cost effective. Solar panels will not help to compensate for undersized electrical service. You would still have to upgrade the existing service. Once that is done you should have no problems and all the electricity you need would come from your power company. Have an electrician come out and do an inspection and tell you what all needs upgrading. Solar panels would save you money on the monthly power bill but the cost to install them would be higher than your savings. If it made economic sense to have solar power then everybody would be doing it. That's why you see very few houses with solar panels on top.
Q:how the energy of solar panel measure?
Most PV solar panels are labelled with their peak power output - this is the maximum power (measured in Watts) which that panel can generate in full sunlight. Remember these simple formula- V=IR and P=VI The current flowing through load keep the flow of electrons and thus energy is produced.
Q:Help with solar panels?
Unless you're very rich, you won't be able to afford solar panels that can meet the average demand of a home. In the US, the average demand for a home is 920 kwh per month, which amounts to 3,833 Watt panels if you assume 8 hours of usable sunshine and don't take into account your location. At current installation rates that's easily a $9,65 project. If you assume a 25 year useful life, it amounts to a return of 3.3% per annum at 0 cents a kwh not counting the costs of repair, insurance, the inverter, any fees to the utility for net metering if any etc. You would be better off putting $9,65 into a mutual fund until better technology or government incentives came along, in some areas, the government subsidies can make it worth your while. Also, keep in mind that in many areas, the net metering arrangements only deducts the power you've generated from your bill so you would want to size the array to meet your base usage in order to get the most from your investments. So meeting your actual needs would result in a loss on the return as there will be months where your usage is less than your average. In theory, if you put $7,208.69 into a mutual fund expected to return 4.4% per annum then you could withdraw enough to pay each month's power bill for 25 years at $0.0 a kwh and therefore be self sufficient through financial means. You would get more mileage focusing on heating and hot water as heating and hot water is 75% of a home's energy use and can be addressed with lower cost technologies like passive solar and solar thermal panels. You have to put it into perspective, it's an investment and you want a return that's competitive with your investment opportunities.

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