250W Polycrystalline silicon solar panels
- Ref Price:
-
- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 200000 watt
- Supply Capability:
- 20000000 watt/month
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Introduction
This installation Manual contains essential information for the electrical and mechanical installation that your must know before installing CUSTOMER PV modules. This also contains safety information you need to be familiar with .All the information described in this manual are the intellectual property of CNBM and based on the technologies and experiences that have been acquired and accumulated in the long history of CUSTOMER. This document does not constitute a warranty, expressed or implied.
CUSTOMER does not assume responsibility and expressly disclaims liability for loss, damage, or expense arising out of in anyway connected with installation, operation, use or maintenance of the PV modules. No responsibility is assumed by CUSTOMER for any infringement of patents or other rights of third parties that may result from use of PV module.
CUSTOMER reserves the right to make changes to the product, specifications or installation manual without prior notice.
Data sheet
Maximum Power | 250W |
Efficiency | 0.154 |
Backsheet | White |
Frame Colar | Silver |
Manufacture Site | China |
Frame | Anodized Aluminum Alloy |
Weight | 19 kg |
Work Principle
FAQ:
1. How long will my inquiry get response?
Your inquiry related to our products or prices will be replied within 24 hours.
2. Can I get professional service and suggestion?
Well-trained and experienced staffs to answer all your questions in fluent English.
3. Do you accept OEM or customized design?
OEM & ODM, any your customized lightings we can help you to design and put into product.
4. What if I need specific design?
Distributorship are offered for your unique design and some our current models.
- Q:Can solar panels power an entire home?
- Yes, solar panels can power an entire home. By harnessing the energy from the sun, solar panels can generate electricity to meet the energy needs of a household. The number of solar panels required depends on factors such as the home's energy consumption, sun exposure, and panel efficiency. With proper installation and sizing, solar panels can effectively provide power for all the electrical needs of a home, including lighting, appliances, and heating/cooling systems.
- Q:i need to make a mini-solar car which shouldn't cost much. it's for my science project. for now, i just found out how to make a solar panel using copper oxide, but it does not generate enough power to power up the engine of the toy car [ the small engine they used in the toys, like from TAMIA]
- There are several types of solar panels. If you mean photovoltaic panels for generating electricity, that is a really advanced project that few amateurs are equipped to do. In the long run, it will be a lot cheaper and easier to buy factory made PV panels. You can try building one by sandwiching an array of photovoltaic cells between a sheet of glass or plexiglass and a sheet of aluminum. Remember that this assembly must be able to withstand great heat, and it must be sealed to make absolutely sure it does not leak.
- Q:Are there any tax credits available for installing solar panels?
- Yes, there are tax credits available for installing solar panels.
- Q:How do solar panels affect insurance premiums?
- Solar panels can potentially lead to a decrease in insurance premiums as they are considered to be a low-risk investment that adds value to a property. However, the exact impact on insurance premiums may vary depending on factors such as location, system size, and the insurance provider's policies.
- Q:Can solar panels be installed on a warehouse or industrial facility?
- Yes, solar panels can be installed on a warehouse or industrial facility. In fact, these large rooftops often provide ideal conditions for solar panel installations, as they have ample space to accommodate a significant number of panels. Installing solar panels on warehouses or industrial facilities can help offset energy costs, reduce carbon emissions, and contribute to the organization's sustainability goals.
- Q:How are solar panels made?
- Solar panels are made using a complex manufacturing process that involves several key steps. First, high-quality silicon ingots are sliced into ultra-thin wafers. These wafers are then treated with various chemicals to enhance their electrical properties. Next, metal contacts are added to the front and back of the wafers, allowing for the flow of electricity. The wafers are then assembled into a module, encapsulated in a protective layer, and sealed with a glass cover. Finally, the completed solar panels undergo rigorous testing to ensure their efficiency and durability before being ready for installation.
- Q:I am doing a science fair project on solar panels, and I need four solar panels to conduct the experiment. I would only need the solar panels for a week. What type of solar panel should I get?
- Your USB power booster may be fragile and is likely expensive, so possibly you should get your 5 volts some other way. 3.7 volts plus a .2 volts D cell is 4.9 volts which is likely close enough for charging most anything with a USB charging cable. If bright sunlight is falling on your solar panel the battery voltage will go to about 5. volts charging at 700 MA, which is also likely acceptable, and will generally be less as part of the 700 ma is being used to charge something else. Also 300 ma may be more typical output of your solar panel even when the sun looks like it is bright. Over charging is unlikely unless the lithium cell has a lower amp-hour = AH rating than the Ni-cad (or nickel metal hydride NiMH 4 AH) D cell, but perhaps you should disconnect the solar panel, if it has been more than one bright sunny day since you charged something with a USB cable. If your battery reads over 5 volts with the solar panel unlighted or disconnected, you are likely to over charge either the lithium cell or the D cell. The PCB protected may complicate adding the D cell (probably not) so you may want to follow your original plan. Your solar panel may send as much as 9 volts to your PCB protection board, when the lithium cell does not need charging: Can the protection board tolerate 9 volts? Probably. If in doubt you can put either a .5 volt or .2 volt rechargeable D cell in series with the solar panel which reduces the input to your PCB protection by about .5 volts. That D cell will over charge, unless you replace it weekly, perhaps oftener. I think your PCB protection prevents over charging and cuts off the load if the lithium cell is discharged to an unsafe level or the load is demanding excessive current. Only the last is a possible problem = one of your USB cords may demand an amount of current that the PCB protection considers excessive. Your USB booster needs about twice as much current as the usb cord is supplying. You don't get the extra voltage by magic. Neil
- Q:I purchased some small 3.6 v 70mA solar panels online. I have no experience with solar panels. I am confident of the layout of the parallel circuit I want to create, however I don't know how to properly connect the tabs that come from the sides of the panels. Any help on connecting them?
- If okorder
- Q:When you consider that solar panels will not produce enough electricity in their service life to cover their cost should we subsidize them anyway? that much of the cost of a solar panel is the energy to manufacture, install, transport and maintain them. Shouldn't the market determine whether they are worth installing?Is subsidizing them taking money away from research that could be spent on more viable alternatives?Should we be taxed to pay for others solar panels when they don't work?
- Recent investments into solar panels have brought about a couple of interesting realizations and developments. One, as you state, is that traditional solar panels (silicon crystalline panels) are not currently cost effective, even will full-scale manufacturing production. It's possible that improved manufacturing techniques will bring the retail price down somewhat, but it needs to be brought down a lot to make economic sense without incentives. The other, though, is that a new method of producing solar panels - thin film technologies - has been developed. These are currently quite expensive, but because there are no crystals to grow, they are expected to drop significantly in price as production increases. I believe that this technological development has been made as a direct result of government support for solar energy. It is not taking money away from research - rather it is providing the incentive for research. I could be wrong. I've been wrong before. But I think that these new solar technologies, which are already hitting the market, will dramatically change the economics of solar energy.
- Q:I need a solar panel for my laptop as i am going camping in the desert, and i need my laptop. There are two choices of solar panels, One is 0 watts and 2 V and maximum power current 0.56 amps. The other one is 2 watts, 2 V and no mention of current. My laptop plug says input 00-240V and .5A and then output 5V-5A. Which one should i get for my laptop. If there are other choices please tell me ill look them up on OKorder.Thanks
- I'm afraid neither of these panels will do much for charging or running your laptop. If the power brick is supposed to emit 5 volts at 5 amps, that's 75 watts. Neither of those panels provides enough voltage and the power output is obviously far too small. The capabilities of solar power are vastly overestimated for small panels. Sunlight is limited to about kilowatt per square meter under ideal conditions (summer time, clear blue sky, for a few hours around noon in the US southwest). But consumer panels top out at about 5% efficiency, so your limit is 50 watts per square meter - in other words you would need about half a square meter, or about six square feet, of panel to provide 75 watts. And even under ideal conditions you will only get that much for a few hours each day. Also, the panel's voltage output is not regulated, so even if you find a panel that emits 5 volts (this would actually have to be made up of groups of 30 cells in series, as they emit half a volt each at most) you can't just connect the panel output into your laptop's DC in. You'd need a regulated DC-to-DC supply, and since that is not 00% efficient it will cost a bit of the power... now you need even more panel area. All in all, not really a practical thing to carry along on a camping trip.
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250W Polycrystalline silicon solar panels
- Ref Price:
-
- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 200000 watt
- Supply Capability:
- 20000000 watt/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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