Solar Polycrystalline Panels (25W-35W)

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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)

Solar Polycrystalline Panels (25W-35W)

 

The usage of Solar Polycrystalline Panels

Solar Polycrystalline Panels (25W-35W)

 

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Q:i have three 30 watt solar panel and 6 battery cells of 2 volts 550AH. but my batteries are never fully charg?
Well you are stating the solar panel powers but no mention of their voltage??. Yes, they should do the job. I suspect the lack of blocking diodes may be your problem, assuming you have done the homework. You have 6 battery cells at 2 volts each, that is ...err..2 volts, assuming you have them connected in series. Count the number of cells on the solar panels and maybe we have a starting point. One solar cell is 0.6 v, in this case you would need a minimum of around 30 cells (physically it will probably be 32 to make it 'square'), you need a fair bit of over- sizing in that direction. Solar panels are resistive when not illuminated so must have a blocking diode included to prevent the batteries from discharging into the solar panels at night. Check that each array has a blocking diode included, if not add them. Solar power is pretty useless unless you have loads of sunshine. You seem to have gone through a bit of trouble and expense on this one, so give me some basic facts and I will help you through it. Update 7 Dec If the batteries take 20 hours to fully charge and there are 0 hours of sun each day then the batteries will be fully charged in 2 days. The question was, can the battery be charged, answer is yes, it can. There is no mention of load. If the batteries are not charging there is something wrong.
Q:What ever happened to solar powered panels?
The technology did not die out. It is in fact quite alive and well, and there exist many different manufacturers of solar panels and devices utilizing them. The problem is that the technology has not yet advanced sufficiently to generate large amounts of power with solar panels, at least not with panels of any practical size and weight. You can easily buy a panel which will trickle-charge your car's battery during the day, but nothing that can generate anywhere near the power required to actually move a car's mass at any significant speed. You would need to buy panels with a very large surface area to make any significant amount of power, and these panels would be very heavy and very expensive.
Q:Questions about the okorder.com solar panels?
I believe Earth4Energy to be a bald-faced scam, selling plans that will not do what is implied in the marketing, and imparting no information that is not publicly available on the internet, already. If you were to search for solar panel on torrent sites, most likely, some disgruntled customer has posted the material. It probably violates the E4E copyright, so I'm not suggesting that you get it in this manner. I'm going to skip many of your questions, given my already-stated opinion of Earth4Energy. Professionally-installed panels have a net cost of thousands of dollars in general. While they can save money (and Southern Cal is an ideal place for this), consider that it generally takes 0 years or more to get your money back. If you're on S Cal Edison, or SD Gas and Electric, you can go on net metering. They don't really pay you, they credit your electric bill. After a year, if you used more electricity than you generated, you pay them. If you generated more than you used, they reset the balance to zero and say thanks for your donation. You never really get a check, like in some other states. But you should have lower electric bills. You can put up panels for your own use without any certification. To put up panels professionally, you'll need a C-0 contractor's license from the state, or will need to be under the supervision of someone with such a license. But if it's the latter, you might just be the grunt that carries the panels off the truck and up the ladder, for minimum wage. I'd say better than 95% of residentail solar is connected to the grid, if the grid is available. It's a clear winner. Who wants to pay 50% more for their system, just to have batteries that need their water and acid checked all the time? Below is one of many unsatisfied customers from Earth4Energy. Be careful in your search, people selling these reports have bought up the keywords such as scam and ripoff to direct you back to sites selling the product.
Q:what are solar panels?
every time i hear the word solar panels i think those large or small flat shiny black or grey surfaces that absorb the sunlight and convert the heat and so on so forth into energy like electricity But ...i dont know how they fully work really so, i dunno.
Q:Anybody install solar panels themselves?
i have always been interested in it but the storage (batteries) and power grid tie in (to get paid for excess) technicalities made me shy away. since your getting it installed im sure labor is a huge part of that -OKorder has tons of the equipment. I think wind may be a good home renewable source depending on where you live (cheaper than solar if you got the wind and space) I would doubly check any goverment offerings - I know they used to and maybe still do offer sizable credits if you are within the bureacratic standards so make sure the installers work with you on that. good luck -its new - and going to be a hassle to get right but the world needs more like you. willing to pay more now for a better tommorow (and not just $ wise) you should come out ahead as interest rates and market provides little value on that cash and saving any equipment falure you sound good. does the price include the batteries for all your produce kwh's? panels and labor aside batteries are the next big one
Q:Solar panel angle question..?
2.20 approximatey (2 /4 -- ish) X = (tan7)(8/tan45)
Q:Questions about solar panels?
In the US, the average electricity consumption for a house is 958 kwh per month which is 32 kwh per day for a 30 day month. Once you get to New York City, the number of hours of usable sunlight drops to four hours per day so using six hours a day as a guideline and the fact that inverters tend to be 65% efficient, you wind up requiring 8.205 kw of solar panels which at $5 a watt amounts to $4,205 not including the inverter. Your first task would be to reduce your energy use. Keep in mind that the effective cost of solar power in 2007 was 38 cents per kwh. Without government incentives, you wind up paying more for your electricity than had you just bought it from the grid.
Q:_How many solar panels needed to light up a whole house?
this is according to the load, that is to say, how many electricity do you need in one day.
Q:Wattage on soldering iron for solar panel?
Rosin okorder.com/
Q:How to make 2V 4.5A solar panel from solar cells?
To increase current, you connect the cells in parallel. But I think you really mean you need 4.5 watts rather than 4.5 amps of current. For an RC car, 4.5 amps would be huge, literally a regular car battery. So I think you mean you need a 2v, 4.5w panel. That would make more sense for an RC car battery. I went on OKorder and bought a 2v, 5 watt panel for about $30.

1. Manufacturer Overview

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

a) Certification Name  
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Reference  
Validity Period  

3. Manufacturer Capability

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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