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Item specifice:

Material: Monocrystalline Silicon Max. Power(W): 250 Number of Cells(pieces): 60

Product Description:

Product Description:

1. Structure of Polycrystalline Silicon Solar Panel Type CR290P-CR250P

Solar modules, which are widely used in ground mounted utility-scale PV plants, large-scale and small civil and commercial power generating system such as BIPV combined to the grid, roof-mounted PV power system, rural electrification, communications, emergency auxiliary power.

Solar PV module is comprised of some solar cells which are connected in serial with high efficiency and enhanced reliability.


Rated maximum power (Pmax)250W
Open circuit voltage (vOC)45.43
Short circuit current (Isc)5.56
Maximum power voltage (Vmp)37.94
Maximum power current (Imp)5.24
Cell efficiency (%)18.00%
Max system voltage (VDC)1000V DC
Temperature coefficient of Vm-0.241%/K
Temperature coefficient of Im0.033%/K
Temperature coefficient of power-0.37%/K
Maximum Series Fuse Rating10A
Solar cell and configuratiou72pcs(6*12)in series,125*125mm monocrystalline

module mismatch losses leading to improved system yield.



- Tests by independent laboratories prove that Solar modules:

 Fully conform to certifi cation and regulatory standards.

 Withstand wind loads of up to 2.4kPa and snow loads of up to 5.4kPa, confi rming mechanical stability.

 Successfully endure ammonia and salt-mist exposure at the highest severity level, ensuring their performance in adverse conditions.


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Q:Nuclear reactors vs. Solar panels?
You should research nuclear reactors and their emissions. Mostly it's waste heat, and if they use a water-based cooling reactor, there can be significant emissions of water vapor. Some might consider the spent fuel an emission too. Waste nuclear material disposal is a problem. Research it. Solar panels have no emissions during operation, but there is some nasty stuff emitted when they are manufactured. 2: Maintenance of solar panels is pretty straightforward: keep them clean, trim overhanging trees, shrubs, etc., check for and clean corrosion, contaminants, etc. regularly. Maintenance of nuclear power plants, so far, is a full time job for many technicians and engineers. The recently developed portable (the size of a shed) nuclear generators claim zero maintenance for 20+ years. That's a big improvement.
Q:solar panels for my home.?
You will first need to know how much power you'll be using. Follow the link I left and it will take you to a page that has an Electrical Load Computation Worksheet. It's about the fifth one down on the page. After that, you'll be able to figure out what you need and what it will cost. The page link I left has other helpful articles, too.
Q:How do solar panel power systems work?
Solar panel power system contains off-grid and on-grid types, for off-grid type: the panels convert solar energy into electric power and the power will be stored in batteries through controller at daytime, when the loads need power, the battery will charge them through controller; the on-grid system is almost the same, but without battery, it will connect with city grid.
Q:can I easily build my own solar panels for my home?
I honestly don't know but I have done lots of internet searches and there are several site where you can buy the plans to do this for around $49 and in the blurb it says that the hardware is very cheap to buy too. These are american based sites saying that all the hardware is easily available so why not give it a try though it could all be a con - $49 dollars might be worth a try
Q:A Question about Solar panels?
You are missing one bit of information in order to get an answer. Watts = Volts x Amps Find out how many amps the collector can put out and you can then plug in the numbers into the equation and get your answers.
Q:What home appliance can be powered by a solar panel?
First and foremost, you are talking about photovoltaic panels. These harness solar energy and convert it to electricity. The downside to these is that they are expensive, although you will see a huge return on your electric bill in usually 5-7 years. The photovoltaic panels produce DC electricity, so if you want to power your home appliances you will need an inverter that takes DC electricity and converts it to AC (since almost all home appliances run off of AC). You will also need a battery and an optional but very useful charge controller. The battery stores electricity that is generated from the sun to be used on cloudy days. The charge controller is the brains of the operation and deciphers how much electricity should go to the appliance(s) or the battery.
Q:How can a solar panel work for me?
Yes, it can. Now what do you expect out of it? It can reduce your electric bill by some amount. That amount depends on how many solar panels you install and how sunny your days are. You have to pretty much cover a roof to get a substantial electric reduction. There are 2 companies where I live that have installed solar panels and covered most of their roofs with them. They've reduced their electric bill by about 30%. It's expensive to do this. Don't expect a fast pay back. In fact you may save more by using solar heating panels for hot water than by using solar electric panels. I think it's cheaper as well.
Q:Where can i buy mini (v - 2v) solar panels?
Q:Solar Panel watts needed?
Mimi: Solar Power is not really that economical, and has many other disadvantages as well. You did not specify much info in your question as to the size of the water or air pump. So let's make some assumptions to get you some numbers. ) Let's say the water and air pump are about HorsePower (HP). The HP pump , considering efficiency losses, will draw around ,000 Watts , or kW. 2) The 600 Watt LED Light is quite high --- they are usually much smaller lights 40 Watts or less. BTW --- these LED lights are very expensive light as well. Just so you are aware. Between the pump(s) ( maybe 000 to 400 Watts) and the 600 Watt light ----- and without knowing the specifics --- you are probably looking at around 2,000 Watts or 2 kW. A 2 kW Solar PV unit will run around $20,000. The PV unit will only run at full capacity during daylight hours. They usually average about 5 hours per day. So you will only be able to run your pump and LED Lights during the middle of the day --- maybe 0:00 AM to 5:00 PM. If you want to run the pump and lights after sundown, you will need battery back-up. The electric storage batteries will likely run about an extra $5,000. They will last about 5 years. If you decide this doesn't work out well --- you can stay with the local utility --- at $0.0 per kWh. It will cost you about $0.0 per hour to run the pump --- maybe 30 to 50 cents per day. It would cost you about 6 cents per hour to run your light. Maybe 30 or 40 cents per day. You could essentially run your pumps and light several hours each day --- all for about $ per day, or $365 per year. This sounds like a less costly alternative.
Q:Amount of solar panels needed to run a/c and pool pump?
Solar panels are not going to be able to run a pool pump 24/7. They will only produce their rated electricity for 4 to 8 hours a day. For the balance you will need a grid connection or a battery backup. Running the AC would require different power levels depending upon humidity, outside temperature levels, solar gain for the house, and insulation levels. An underground house in Maine will be much easier to AC than a Glass house in Arizona. First find the power requirements. If you had the existing equipment they will have a label with the power requirements or the minimum breaker required if nothing else. For example the pool pump may require a 0 amp 240 breaker while the AC may require a 30 amp 240 breaker. That would be 2400 watts for the pump and (30 x 240) 7200 watts for the AC or a total of 9.6kW each hour of operation. (max) You will next need to find the rated capacity of the solar panels. If each panel were rated at 300 watts then you would need 32 panels for the daytime use and perhaps more to fill in a battery backup. All the numbers are very rough estimates.

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