250watt Crystalline Solar Panels for Rooftop Systems
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 78000 watt
- Supply Capability:
- 10000000 watt/month
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CNBM 250watt Crystalline Solar Panels for Rooftop Systems
Specifications:
Solar panel refers either to a photovoltaic (PV) module, a solar hot water panel, or to a set of solar photovoltaic modules electrically connected and mounted on a supporting structure. A PV module is a packaged, connected assembly of solar cells. Solar panels can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Each module is rated by its DC output power under standard test conditions, and typically ranges from 100 to 320 watts. The efficiency of a module determines the area of a module given the same rated output – an 8% efficient 230 watt module will have twice the area of a 16% efficient 230 watt module. There are a few solar panels available that are exceeding 19% efficiency. A single solar module can produce only a limited amount of power; most installations contain multiple modules. A photovoltaic system typically includes a panel or an array of solar modules, an inverter, and sometimes a battery and/or solar tracker and interconnection wiring.
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 |
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.
- Q:I thought that I had a fairly good understanding of watt's law, but i'm starting to doubt myself.If I have a load of 4500watts at 240 volts, how many watts of solar panels do I need, if the solar panels are at 2v?Yes, Yes... I have a charge controller, batteries, etc...So the way I looked at this at first:watts = volts * amps For the load4500 = 240 * xx would be 8.75aFor the power source (each solar panel)00 = 2 * xx would be 8.3a8.75 / 8.3 = 2.25, rounded up = 3So... based on that I came to the conclusion that I needed 3 solar panels...But... then I was thinking. Does it work that way?Or do I need 4500 / 00 = 45, aka 45 solar panels?In other words...If I have a 2v power source, how many watts do I need to drive a load of 4500w at 240v?ThanksMatt
- You okorder / Solar Pro Magazine another of their publications
- Q:Hoping to find instruction, materials list and hardware needed to construct solar panels myself, how many and make it happen instead of talking about it
- If you think that a solar storm is going to knock out most power utilities in that time, what makes you think that your solar panels will not be affected as well? The cost to even come close to light up half your house will be prohibitive and will take at least a decade or 2 to just break even on your original costs. May want to do a little more research on your 202 storms. If you are concerned about the power going out for a while, then you better check at what else may happen.
- Q:Can solar panels be installed on a hotel or hospitality establishment?
- Yes, solar panels can be installed on a hotel or hospitality establishment. In fact, many hotels and hospitality establishments are increasingly adopting solar energy to reduce their carbon footprint, lower energy costs, and showcase their commitment to sustainability. Solar panels can be installed on rooftops, parking lots, or even as shading structures, providing clean and renewable energy to power the establishment's operations.
- Q:Do solar panels require a battery for storage?
- No, solar panels do not require a battery for storage.
- Q:How can solar panels be used for heating water?
- Solar panels can be used for heating water by utilizing the sun's energy to generate electricity, which powers a heating element that warms the water. This process involves the conversion of solar energy into electrical energy, which is then used to heat the water, making it an eco-friendly and cost-effective method for water heating.
- Q:How do solar panels affect the property's carbon footprint?
- Solar panels can significantly reduce a property's carbon footprint as they harness clean and renewable energy from the sun. By generating electricity without emitting greenhouse gases, solar panels help to offset the carbon emissions that would otherwise be produced by using traditional fossil fuel-based energy sources. This reduction in carbon footprint contributes to a more sustainable and environmentally friendly property.
- Q:i don't know very much about it, but can you somehow take off the little solar panels off of the outdoor light things and make it so you can hook an outlet up to it and plug in to it like a phone charger for electricity.
- Little solar panels on lights are very low power. The battery in one such may be 0.5 Amp-hours and .2 V ; it may be different but it should be marked on the panel/battery/manual. An outlet in your house is designed to run on 20 V (typically in N. Am.) and they run on alternating current (AC) whereas the panel generates direct current (DC). (If you don't know the difference, do not worry to much but just understand that they are not directly compatible.) You therefore need an inverter to change DC to AC (and lose some although inverters are now very efficient). But the amount of power generated by those panels is still very small. That is why solar lights are low power (just a few watts in most cases). To make things even more irritating, phone chargers do not work off 20 V AC as you are charging the battery and need a low voltage DC -- which is what the solar panel is giving you. It is almost certain that the voltage from the panel will be less than the voltage required for the phone. The charger is mostly cable but there is a black box incorporated and it should say what the voltage and current output are (the input will be 20V). So you should be able to overcome this not by hooking up the panel to a 20V outlet and then plugging the charger in but by hooking up the panel to the phone directly if you can get enough voltage out of the solar panel (or hook up several) and if you fashion a connection device. They already make them -- solar battery chargers and I am sure you can enter that into a search engine and find loads. Typically the panel alone is much more than a solar light -- which shows the relative power requirements.
- Q:solar panels are way too expensive to buy, can they be homemade cheaply? i want at least 500 watts. everyone on the web sells these instructions, but i'd like a link to free info, if it is really possible for a non-sciencey person to make. thank you
- The idea is to hand assemble scrap solar cells that would otherwise be thrown out. At one point in time, very few people would want to do this so you could get the broken solar cells for free but now they sell them by the watt. It's still cheaper than a pre-fabricated solar panel but it's very labour intensive. Technically it's like wiring a bunch of batteries together, you measure the voltage and current a broken cell produces and decide whether or not to wire it in series or in parallel with other cells to get the performance characteristics that you want plus try to fit them onto some kind of structural panel in a fashion that uses the space efficiently. Since your handiwork is likely to be fragile, you'll probably have to put some plate glass on top to protect the cells from the elements, you can also improve performance by positioning fresnel lenses to increase the amount of light on active elements versus inactive areas of the panel.
- Q:I got an 8v solar panel for a project today, the only problem is that it came without any wires attached to it. Now i don't know what type of wires i should use and if i should solder them on or if i should use epoxy instead. Can anybody help me out?
- 6 gauge wire would be a good size. Just solder it on and run it wherever you want.
- Q:im making an energy efficiant house for science class and i need to price the house. im putting solar pannels on the roof and would u please tell me how much they are per like 2 sq. feet of a pannel?
- Completely self-efficient and autonomous??? Forget it. Too expensive. It's only worth if you use like 8 lights (2-20w) about 4 hours a day, a fridge, a tv about 4 hours/day and basically nothing else or a few low consume stuff. Forget about microwaves, dryers, or other stuff. Too much watts. And that would cost you no less than 5000-6000$. You need panels (about 4 or 6 20w would suit maybe), 2 batteries (about 600Ah at least), inverter(500w/24v) and a regulator, lets say a 30A one. Just stick to normal energy supply. A single 20w panel may cost about 750$ at least.
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250watt Crystalline Solar Panels for Rooftop Systems
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 78000 watt
- Supply Capability:
- 10000000 watt/month
OKorder Service Pledge
OKorder Financial Service
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