Polycrystalline Solar Panels for 20kw Rooftop Systems

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Tianjin
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Min Order Qty:
78000 watt
Supply Capability:
10000000 watt/month

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Product Description:

CNBM Polycrystalline Solar Panels for 20kw Rooftop Systems


Solar modules use light energy (photons) from the sun to generate electricity through the photovoltaic effect. The majority of modules use wafer-based crystalline silicon cells or thin-film cells based on cadmium telluride or silicon. The structural (load carrying) member of a module can either be the top layer or the back layer. Cells must also be protected from mechanical damage and moisture. Most solar modules are rigid, but semi-flexible ones are available, based on thin-film cells. These early solar modules were first used in space in 1958.


Polycrystalline Solar Panels for 20kw Rooftop Systems

Specifications:

Electrical connections are made in series to achieve a desired output voltage and/or in parallel to provide a desired current capability. The conducting wires that take the current off the modules may contain silver, copper or other non-magnetic conductive transition metals. The cells must be connected electrically to one another and to the rest of the system. Externally, popular terrestrial usage photovoltaic modules use MC3 (older) or MC4 connectors to facilitate easy weatherproof connections to the rest of the system.


solar panels from 5W--300W, made of TAIWAN MOTECH brand cells,with CO in TAIWAN,Mono and Poly with VDE,IEC,CSA,UL,CE,ISO.

We import solar cells from Taiwan Motech brand, with this CO in taiwan and our CSA certification,we can still sell goods to Anti-dumping areas like USA. Our main products are solar panels, off grid and on grid solar home systems , solar street lighting systems, solar water heating system,solar pump,solar attic fan, solar DC LED lights and solar DC refrigerators.

Certificates : ISO, CE, VDE IEC, MCS, CSA-UL, CEC.
Delivery time: sample 10days, order 25-30days.
Sample: charged.
Payment term: T/T 30% as deposit, 70% before shipment. Or irrevocable L/C at sight.
Trade term: FOB Shenzhen or CIF destination seaport or Airport.

Characteristics:

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.
IX.The certificate issued by international authority: UL, TUV, IEC, VDE, CE.
 

Quality and Safety

1. Rigorous quality control meets the highest international standards.

2. High-transmissivity low-iron tempered glass, strong aluminium frame.

3. Using UV-resistant silicon.

4. IS09001/14001/CE/TUV/UL  

Warranties

1. 10 years limited product warranty

2. 15 years at 90% of the minimal rated power output

3. 25 years at 80% of the minimal rated power output

Technical date :

ITEM NO.:

Poly 156*156 cell ,60pcs . Power range from   230Wp-260Wp

Maximum Power(W)

230

235

240

245

250

255

260

Optimum Power Voltage(Vmp)

29.4

29.5

29.7

30.1

30.3

30.5

30.7

Optimum Operatige Current(Imp)

7.83

7.97

8.08

8.14

8.25

8.37

8.48

Open Circuit Voltage(Voc)

36.7

36.8

36.9

37.1

37.3

37.5

37.7

Short Circuit Current(Isc)

8.52

8.59

8.62

8.65

8.69

8.73

8.78

Solar Cell:

156*156 Poly

Number of Cell(pcs)

6*10

Name of Solar Cells

Polycrystalline Cell

Size of Module(mm)

1650*992*40/45/50

Cable & Connector Type

Pass the TUV Certificate

Frame(Material Corners,etc.)

Aluminium-alloy

Back sheet

TPT

Weight Per Piece(KG)

19.5KG

FF (%)

70-76%

Junction Box Type

Pass the TUV Certificate

Tolerance Wattage(e.g.+/-5%)

±3%, or 0-3%

Front Glass Thickness(mm)

3.2

Temperature Coefficients of Isc(%)

+0.04

Temperature Coefficients of Voc(%)

-0.38

Temperature Coefficients of Pm(%)

-0.47

Temperature Coefficients of Im(%)

+0.04

Temperature Coefficients of Vm(%)

-0.38

Temperature Range

-40°C to +85°C

Surface Maximum Load Capacity

5400Pa

Allowable Hail Load

23m/s ,7.53g

Bypass Diode Rating(A)

12

Warranty

90% of 10 years, 80% of 25 years.

Standard Test Conditions

AM1.5   1000W/ 25 +/-2°C

Packing

carton or pallet

1*20'

14 Pallets / 316pcs

1*40'STD

25 Pallets / 700pcs

Polycrystalline Solar Panels for 20kw Rooftop Systems

Polycrystalline Solar Panels for 20kw Rooftop Systems



FAQ:

I..Will you focus on the safety of the goods during transportation?

Yes, Safety of the cargo is the primary element that we would consider on transportation.

II..How would guarantee the quality will meet the requirements of your clients?

Before shipment, we will have inspection for each batch of goods.

III..What certificates do you have?

IEC,UL,TUV,CSA,etc.

IV..Can you do OEM according to clients’ requirements?

Yes, we have our own brand while we can provide OEM service.


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Q:How can I run my house purely off of solar panels?
I ve been researching this myself! I need appr 6000w per year. I live in MN which a zone 5 on a solar map (4.4 hrs of sunlight per day). I would need 56 panels at 300w each!!! pffft - I d be dead before I recouped my cost, plus my roof isn t even that big! Sure, I can reduce my bill, but then again the $ to reduce it..... I m now looking into wind turbine since it always seems windy here.
Q:Homemade Solar Panel : Hi! guys i want to know what do you think about Homemade Solar Panel?
If you want to make hot water then they are easy to make. Search the web.
Q:Solar Panel Wiring in SERIES?
You should be fine with the series as long as you use a multimeter and verify configuration Get a charge controller. Will be worth the small cost and prevent many issues.
Q:how do buildings circulate energy?
The answer depends upon the type of solar energy captured . Photovoltaic Solar Panels convert the energy into electricity. This electricity is ran throughout the building via wires. Thermal Solar Panels typically capture the energy in the form of heat. The hot water is circulated through the building in water pipes.
Q:Run a air conditioner off solar panel?
This Site Might Help You. RE: Run a air conditioner off solar panel? Can someone tell me if I can run a air conditioner off solar panel? I have a ET-P65420 20Wp solar panel. What do I need to make it work? I am told I will need a Enphase Energy Microinverter M20. Is that true? I am looking to run a 5000 to 8000btu air conditioner to a max of 0000btu air...
Q:Feedback on Solar Panels?
They work. If you have realistic expectations of them, understand their limitations and have a good knowkedge of electronics, you will be glad you have them, and you will also likely want to add more as you can afford them. If you need someone else to install them and you know little to nothing about electronics, your installation cost will be much higher. However they are not always a total solution, and for those wanting to continue using energy the way they do when attached to the grid they will be disappointed. You do need to make some changes to how you use energy. Get them for the right reasons, and at some point you can unplug your house from the gtid. Grid tir is fine for some, but highly overrated by those who wish to social engineer society to have things both ways- tied to the grid to produce power while letting the power company do it's thing to your appliances,
Q:Maintenance for solar panels....?
New sunlight panels are easy and shiny they usually look cool. Then they get dirty with dirt and particles caught on the wind and residues left in the back of by rain and birds. Solar panels need to be by and large cleaned and maintained to be able to hold them running effectively and maximize the quantity of sunlight they convert into electricity. Unlike home windows your sun procedure wants to have a clean and clear surface to make sure they are working at their highest efficiency. If they are not at their surest performance it approach they are not producing the amount of electrical energy that they might be. Sun panels will attract filth, dirt, soot, pollen, tree sap and salt crystals in coastal areas creating a nice layer of dust. This sediment reduces the amount of light reaching the silicon cells underneath the glass floor and reduces the panel's effectiveness. A solar panel that has on no account been cleaned would be producing almost a 3rd less power than it or else could be. Some have mentioned a ten to fifteen percentage lack of sun output as a result of dirty panels. From the ground the panels may just appear to be clean, similar to your windows. Up close nevertheless you will see the grime that has built up from the grime and pollution within the air. A extra visible deposit that can be left on panels is fowl droppings. These tend to wholly block the sunshine from areas of the photovoltaic panel and may colossal scale back its effectiveness. See much more about sun panels preservation beneath link
Q:Solar panels in the Bay Area?
PV Solar panels all work the same. There aren't any climate specific ones. There is enough sun in San Francisco to produce energy using solar panels however, the the same panels located in a sunnier area will produce more energy. Depending on the size of your system, you will probably need a few more panels than an area that receives more sun to produce the same amount of energy. But they will still produce energy, even on overcast days. The solar installers will make all the calculations to determine what size system you will need to produce as much energy as you want. In California, you don't want to produce more than you consume in a 2 month period because currently, you are not able to sell your excess credits back to PGE after your 2 month cycle. Your system will cost more to produce the same amount of power than my system because I have less overcast days than you do. You will have to make the decision if the cost is worth your while. I expect my system to be totally paid for in around 8-9 years, working in the cost of inflation for electricity. After that, I will be paying nothing for electricty for as long as I stay in my house.
Q:explanation of solar panels?
It depends upon your product. If it is a solar panel, I want to know if it is a photovoltaic panel or a thermal panel. If you don't know enough to know the difference for your question it might be somewhat difficult to suggest others should buy them. Products have to be marketed to a need either already felt or not so apparent. Photovoltaic panels supply an electric need and will offset electrical usage or may supply the grid if there is excess power. A discussion of payback periods including property values will be needed in any event. Thermal panels supply heat and hot water. They are more efficient than photovoltaic panels and will give faster payback times. (are cheaper) If you are a bit more specific more information may be possible.
Q:How many volts does a small solar panel on a calculator produce?
It isn't Volts that matter if you're trying to put the calculator solar panel on the camera. It would be the amps. The calculator's solar panel will put out however many volts or very close to what the battery puts out. If you want you can test it out with a Volt/Ammeter. You see, those cameras use 2 double A batteries. They are going to put out a higher current than the small dime shaped battery in the back of your calculator; a higher voltage perhaps too. Those disposable cameras have a photo flash capacitor in them that has to charge. You can hear them charge up when you tell it to turn on the camera's flash. Sounds like a winding then the little orange light comes on. That light means the capacitor is charged. You SHOULDN'T be able to change out the batteries in the camera with a solar panel from a calculator without having to wait days for that flash capacitor to charge. Sorry. EDIT: HOWEVER, you can take multiple solar panels and wire them in a parallel circuit to get more current(amperes) or wire them in a series circuit to get a higher voltage. If you were to do this you could power whatever you wanted with them. Even your house if you were to get a rectifier to convert the power from DC to AC.

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