400 Watt Solar Polycrystalline Panels (25w-35w)
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- Min Order Qty:
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- Supply Capability:
- 100000/month watt/month
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Solar Polycrystalline Panels (25W-35W)
Introduction of Solar Polycrystalline Panels (25W-35W)
Solar polycrystalline panels is designed for large electrical power requirements. It is the optimal choice for both on-grid and off-grid power systems. CNBM Solar panel offers high performance of power per square foot of solar array.Poly- or multicrystalline silicon(poly-Si or mc-Si): made from cast square ingots — large blocks of molten silicon carefully cooled and solidified. Poly-Si cells are less expensive to produce than single crystal silicon cells, but are less efficient. US DOE data shows that there were a higher number of multicrystalline sales than monocrystalline silicon sales.
Characteristics of Solar Polycrystalline Panels (25W-35W)
I Solar Cell : High efficiency crystalline solar cell. Even if under the weak light, the solar module can produce maximum power output.
II Tempered glass (toughened glass): Anti-reflecting coating and high transmission rate glass increase the power output and mechanical strength of solar module.
III EVA and TPT: Using high quality EVA and TPT to prevent destroying and water.
IV AI frame: Without screw, corner connection. 6 holes on the frame can be installed easily.
V Junction box: Multi function junction box with water proof.
VI Long lifetime: ≥25 years; Less power decrease.
VII Good performance of preventing from atrocious weather such as wind and hails.
VIII Resisting moisture and etching effectively, not effected by geology. .
Standard Test Conditions of Solar Polycrystalline Panels (25W-35W)
The opto-electrical specifications shown below are stabilized values being measured at Standard Test Conditions of multicrystalline silicon Solar Panel, Irradiance: 1000W/m2, Spectrum: AM1.5 at 25°C, The info below is subject to manufacturing tolerances. Where appropriate minutes of measurement are available and are used for the dimensioning of the installation.
Advantages of Solar Polycrystalline Panels (25W-35W)
• CNBM Solar performance guarantees for 25 years
• 2 years guarantee for workmanship for multicrystalline silicon Solar Panel
• Timeliness of delivery
CNBM International Corporation's products including Monocrystalline Solar Panel, Polycrystalline Solar Panel ( multicrystalline silicon Solar Panel) have received and enjoyed famous reputation in many countries and regions in the world .As a solar panel manufacturer in China, we strive to provide our customers with excellent service, superior products and unmatched value.
Characteristics of Solar Polycrystalline Panels (25W-35W)
Max Power Voltage Vmp (V) | 18.4V | 18.4V | 18.0V |
Max Power Current Imp (A) | 1.36A | 1.63A | 1.94A |
Open Circuit Voltage Voc (V) | 23.0V | 23.0V | 22.6V |
Short Circuit Current Isc (A) | 1.46A | 1.74A | 2.08A |
Max Power Pm (W) | 25W | 30W | 35W |
Temperature Coefficient of Cells
NOCT | 47℃±2℃ |
Temperature Coefficients of Isc (%/℃) | 0.064 |
Temperature Coefficients of Voc (%/℃) | -0.33 |
Temperature Coefficients of Pmp (%/℃) | -0.45 |
The dimension of the modules can be changed according to the demand of clients
Limits
Operating Temperature | –40 °C to +85°C |
Storage Temperature | –40 °C to +85°C |
Max System Voltage | 700V |
Guarantee of Solar Polycrystalline Panels (25W-35W)
Products Guarantee | 2 yrs free from defects in materials and workmanship |
Performance Guarantee | No less than 90% within 10yrs and no less than 80% within 20yrs |
Certificates | IEC, ISO, TUV, CE |
The Equipment of Solar Polycrystalline Panels (25W-35W)
The usage of Solar Polycrystalline Panels
- Q:I'm building a solar panel for the first time and have the tabbed solar cells. I put together 4 strings of 9 cells. And the cells are each 0.55V, 3.6A.Because I'm going to be using the panel indoors and leaning it up against a window pane, I put them in a 24x36 inch poster-size frame. The frame has a plexiglass cover and a thick cardboard backing. My question to you is this. Will the cardboard backing up against the metal underside (positive side) of the solar cells be ok? I don't know if it may catch fire or if holes may burn through when there's full sun.My guess here is it should be ok. But maybe I'm wrong. If I am wrong, or if something should be put in between, please let me know what I should use.Thanks everyone!
- In commercial panels some sort of polymer is often used for backing. With a 2V panel there are 36 cells, which means they can still output about 4V for charging a 2V battery even when hot. The voltage reduces about 2.2mV per degree C per cell. Commercial panels are meant to work up to about 60 degrees C, which is quite normal in the sun. I have found just lying them on the grass the air circulation is reduced, and they get too hot to charge a 2V battery. This means the backing should have good thermal conductivity while being an electrical insulator, as well as mechanical strength. The cells are often encapsulated in a thermosetting plastic first, then laid face down so a liquid polymer can be poured as backing.. I have removed commercial panels from their frames and re-packaged them to work in a very wet environment. I suppose cardboard would work, but it is unlikely to have good cooling so the expected voltage would be lower. As you intend to only operate indoors I suppose it is unlikely you have full sun most of the time anyway, so there could be less heating and less output current accordingly. I think the cardboard is only useful for a short time, and is not strong enough. Temperature wise it is marginal. The link below uses plywood for the backing. The backing is supposed to provide strength too. A sheet of some sort of plastic or laminate (including melamine laminate as in kitchen bench tops) comes to mind too. The cells are supposed to be bonded to the backing for better thermal conductivity. Use silicon RTV to stick cells to the backing, very thinly.
- Q:Maximum size of solar panel i have to use is - 8 * 5 feet - this is the limitation given to us.
- As in the reply to the other version of your question - you should be able to get that wattage much of the time during full daylight from the area you specify, but your location, weather, and ability to mount the panel(s) at the best angle to the sun at time you most need the energy (winter? summer?) Instead of going with guess work on the efficiency of the panels you are considering, the people who want to sell you panels (or their website) should be able to tell you from the angle of your mount (roof?) and location, etc., an estimate of the average and maximum power available and the kWH during various seasons. This has to be known for either buying the batteries for storage or knowing the economics of feeding back into the grid, depending on the method used.
- Q:How much roof space is needed for solar panels?
- The amount of roof space needed for solar panels varies depending on various factors such as the size and efficiency of the panels, the energy requirements of the building, and the geographical location. However, on average, a typical residential solar panel system requires approximately 100 to 400 square feet of roof space.
- Q:i need as many bad things there is about solar panels
- If it is cloudy out, the solar panels won't pick up any sun, therefore they won't work. Also, not all areas actually get a lot of sun, so solar panels would only be useful in certain places.
- Q:We are thinking about useing solar panels for our house.Does anyone know about solar panels? If so could you please tell me some information on them,and the cost for a home,to install them.
- solar panels are device that convert sun energy into electric energy by physic and chemical effect.solar panels price is high,but you will save your late electricity bill,it is cost effictive.
- Q:Can anyone give me a simple but informative explanation on how solar panels produce electricity/power? Thank you!
- This forum of solar panel is for electric You also get a diffrent type of solar panel this type of panel has a liquid that flows through it and is heated up by the same photovoltaic cells but is ran through the water tank to keep the water warm
- Q:So, assuming that a solar panel is flush with the ground (i.e. only the photovoltaic side is visible, the other sides are covered by dirt,) what would happen if it was run over by a car? How about an SUV? Would it break?Would the solar panel still generate electricity?
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- Q:How long does it take to recoup the cost of solar panels through energy savings?
- The time it takes to recoup the cost of solar panels through energy savings varies depending on factors such as the cost of the panels, the amount of sunlight in the area, the energy consumption of the household, and available government incentives. On average, it can take anywhere between 5 to 20 years to recoup the initial investment. However, with technological advancements and decreasing costs of solar panels, this payback period is steadily decreasing, making solar energy an increasingly attractive and financially viable option for many homeowners.
- Q:Hey was looking at a 5 watt 2 volt solar panel and was wondering if it'd be enough to power a regular light bulb. Also need to power a 5volt 6.5 amp pump for at most a minute at a time. So basically if I had this panel would I be able to plug a lamp into it and have it light for 5+ hours at a time with the possibility of running the pump? If not what size panel would I need?
- The specifications you give say the solar panel produces 5 watts at 2 volts (DC) so that isn't enough voltage to power an ordinary (20-volt) light bulb. You could get 0 of these panels and connect them in series so they put out a total of 20 volts and the total power available would be 50 watts. The panels would light the bulb that way, provided the bulb isn't over 50 watts and you can afford the panels. A panel does provide enough power for a 2-volt car light bulb less than 5 watts. However, the maximum current you can get from these panels is .25 amperes (5 watts divided by 2 volts = .25 A.) This isn't enough power to run your pump which takes 6.5 amperes - at 20 volts, that would be 780 watts. Another thing to check is the pump motor; many electric motors are designed to run on AC only and will be damaged if you try to run DC through them. Remember solar panels produce DC so the raw output from a panel will not work on an AC motor.
- Q:Can solar panels be installed on forests or protected areas?
- Solar panels can be installed on forests or protected areas, but it is important to carefully consider the potential environmental impact and sustainability of such installations. Proper planning and assessment should be conducted to determine the potential disturbance to ecosystems, wildlife habitats, and biodiversity. In some cases, it may be more appropriate to explore alternative locations or prioritize the use of existing infrastructure for solar panel installations.
1. Manufacturer Overview |
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| Location | Jiangsu, China |
| Year Established | 2004 |
| Annual Output Value | Below US$1 Million |
| Main Markets | Australia；Asia；South East Asia; South America；North America； Europe；Africa |
| Company Certifications | ISO 9001:2008; CE; TUV; UL |
2. Manufacturer Certificates |
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| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period | |
3. Manufacturer Capability |
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| a)Trade Capacity | |
| Nearest Port | Shanghai |
| Export Percentage | 1% - 10% |
| No.of Employees in Trade Department | 200-300 People |
| Language Spoken: | English；Chinese |
| b)Factory Information | |
| Factory Size: | Above 8,000 Square meter |
| No. of Production Lines | 6 |
| Contract Manufacturing | OEM Service Offered；Design Service Offered |
| Product Price Range | Average |
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400 Watt Solar Polycrystalline Panels (25w-35w)
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT
- Min Order Qty:
- 1 watt
- Supply Capability:
- 100000/month watt/month
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