Polycrystalline 310w Solar Panel Solar Energy

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
10 watt
Supply Capability:
100000 watt/month

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Product Description:

 Packaging & Delivery

Packaging Details: 25PCS/Pallet, carton box with wooden pallet or wooden box with pallet

 

Delivery Detail: 7-15 days according to the order quantity

 

Product Description

A Grade 250w high efficiency Poly PV Solar panels

Max Power Voltage Vmp(V)

31.5

Max Power Current Lamp(A)

7.94

Open Circuit Voltage Voc(V)

37.5

Short Circuit Current Isc(A)

8.72

Temperature Coefficients of Isc (%/)

0.0825

Temperature Coefficients of Voc (%/)

-0.4049

Temperature Coefficients of Pmp (%/)

-0.4346

Max Power(w)

250

 

We now provide
• Monocrystalline Solar Panel
• Polycrystalline Solar Panel( multicrystalline silicon Solar Panel)

Features of our products:
• High conversion efficiency mono/poly-crystalline amorphous silicon solar cells 
• Modules incorporate high performance bypass diodes to minimize the power drop caused by shading 
• High transmittance, low-iron tempered glass 
• High performance EVA encapsulant to prevent destroying and water.
• AI frame: without screw, corner connection. 8 holes on the frame can be installed easily
• Good performance of preventing from atrocious weather such as wind and hails
Polycrystalline 310w Solar Panel Solar Energy

Company Profile

China National Building Material (CNBM) Group Corporation

Polycrystalline 310w Solar Panel Solar Energy

CNBM International Corporation is a professional solar panel manufacturer in China for CNBM brand . Silicon panel ( silicon module), as our main product, has high quality and good service. Our products are very popular in Europe, Australia, England, Middle East, Mexico, Argentina, Chili, Singapore and Africa.

Furthermore, our products have gained international authorized certificates like TUV, UL and CE.

China National Building Material (Group) Corporation (CNBM), established in 1984, is one of the largest State-owned group corporations of building & mechanical materials which specializes in the design, manufacturing and distribution of building materials in the world.

As the whole world turns “green”, CNBM enters into the Photovoltaic Industry in 2005.After 6 years' fast growth, now our annual capacity is 500MW solar panel and 500MW solar cell.

 

FAQ

We have organized several common questions for our clientsmay help you sincerely

1.what price for each watt?

it depends on the quantity, delivery date and payment terms,

2.what is your size for each module? can you tell me the parameter of your module?

we have different series of panels in different output, both c-si and a-si. please take the specification sheet for your reference.

3.Can you provide the peripheral products of the solar panels, such as the battery, controller, and inverter? If so, can you tell me how do they match each other?

Yes, we can, we have two companies for solar region, one is CNBM International, the other is CNBM engineering Co.

We can provide you not only the solar module but also Solar Cells, the off grid solar system, we can also provide you service with on grid plant.

4What is your warranty system?

 Our product  performance guarantees for 25 years

12 years guarantee for workmanship

Timeliness of delivery

Quality Products certified (TÜV, UL, CE, ISO)

5.How do you pack your products?

We have rich experience on how to pack the panels to make sure the safety on shipment when it arrives at the destination.

6. Can you do OEM for us?

Yes, we can.

7.How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers. Commonly 7 to 10 working days can be served.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Solar Battery System?
A solar panel is usually 36 cells and intended to charge a 2V lead acid battery. The battery in laptops may be somewhere between 5 and 20V. The panel might charge a laptop when it is cold, but they heat up in the sun and then it would no longer charge. Typical lap top power supplies are 3 to 4 amps. You need 2 panels in series to get enough voltage to charge the battery directly, but this is wasteful. If you want to charge at the same rate as a lap top power supply you need large panels to provide 5 amps. The 5 Amp panel will only give 5A when pointed directly at the full sun. There may be between 2 and 5 hours a day equivalent full sun depending where you are, time of year. If you want more than that, you need larger panels, or more than one in parallel for a 2V system. It makes sense to charge a 2V battery with the solar panel, and use that to operate the lap top with a car type power supply for a laptop, which runs from a 2V battery (see link below for an example). Get the biggest panel you can afford, and the battery should be larger if you want to run the lap top when the sun isn't shining. Perhaps a 20AH battery is a minimum size. All this costs more than a lap top.
Q:Solar panel angle question..?
2.20 approximatey (2 /4 -- ish) X = (tan7)(8/tan45)
Q:cost of solar panels?
That's a rather low power for that size. Is it an old panel? Is it amorphous silicon, or crystalline? That should easily fetch $ per watt on craigslist. If I was buying a panel myself, I would probably get a more mainstream panel from a major internet vendor.
Q:How may solar panels/wind turbines may be made affordable?
Wind okorder.com/ For the period 87 - 200: Low Risk = bonds = .8% ROI High Risk = stocks = 5.4% ROI For the period 982 - 200: Low Risk = bonds = 5.% ROI High Risk = stocks = 6.% ROI
Q:solar panels on projectors?
Solar panels put out DC voltage, like a battery. The projectors that plug into the wall require AC voltage. Unless you got a travel projector that plugs into a cigarette lighter (does that exist?), you would need to convert the DC power from the solar panel to AC for the projector with an inverter. And if you want to use it when the sun isn't shining, you'd need batteries to store the power.
Q:Do I need to run a ground form my solar panel?
Although okorder.com
Q:What type of wires should i use for a solar panel?
You might want to be careful about soldering. Some panels can be easily damaged by excess heat. Check the manufactures website for recommended attachment methods. Solder tape or conductive epoxy might be better. If you do not have such things already, a good idea might be to take it into a TV repair shop or electronic hobbyist store. Some folks are kind enough to do it for you for free.
Q:How much do solar energy panels cost?
I co own Sunpower Solutions. We are a solar company in South Jersey. I can tell you that the average cost for a system under 7Kw, is $7.95 per watt. What people fail to realize, is that there is a lot more that goes into a PV system than just panels. Racking, hardware, combiner box, inverters, labor to put the panels up, pay the electrician that ties it all together, the architect that measures the wind load on the panels, etc. It's not cheap. Although, in the state of NJ, the the amount of time it takes for the system paying for itself, is 4 years. It doesn't matter if it's a huge system or the smallest PV system, it's 4 years. Any questions, just ask. @Martin: The thing with those programs, is that the company that is leasing the system, is taking advantage of the renewable energy credit that the system is producing. Yes you get cheap electricity, but you are not taking advantage of the money making ability of the renewable energy credits.
Q:How can I adapt an automotive reglator to a solar panel?
solar panels will naturally produce a certain DC voltage which is what your battery needs - the current will vary based on the sun light. You need probably 4V to have some over voltage. So based on your specs look at having at least 4 V but not too much over that (tells you how many panels you need in series) I would have blocking diodes (probably the solar cell has them built in) to insure the battery does not discharge thru the panel.
Q:Help with Solar Panels?
Be perpared to spend $20,000. The system will cut your bills by $500 per year. If you are over 50, you will die before you see a nickel back into your account.

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