• Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse System 1
  • Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse System 2
  • Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse System 3
  • Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse System 4
Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse

Solar PV Panel 250Watt Polycrystalline Solar Panels for Greenhouse

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
290 pc
Supply Capability:
26800 pc/month

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Solar PV panel 250Watt Polycrystalline Solar Panels

Cell:polycrystalline silicon solar cells 156mm square

Number of cells and connections:60 in series

Application :DC24V system

Maximum system voltage(V) DC1000

Series fuse rating (A): 15

Nominal power(W):250W

Dimension(mm)1640*992*50

Open circuit voltage:37.8V

Maximum power voltage:38.4V

Short circuit current:31.8A

Maximum power current:8.25A

Maximum power:250W

Module efficiency:15.10%

Power output tolerance:0~﹢3%

Solar PV panel 250Watt Polycrystalline Solar Panels

Specifications:

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: what do I need to do to disconnect a solar panel from a battery to protect the panel?
Know that solar panels almost always incorporate a blocking diode to prevent a battery from back-feeding through an un-illuminated panel. Know that solar panels are usually connected to a battery via an electronic switching charge controller, not directly connected. Know that when a solar panel is open-circuited (disconnected from everything) it's terminal voltage will rise to almost twice it's nominal voltage. (22V is common for a 2V panel), unless it is stored in total darkness.
Q: How often do solar panels need to be replaced or repaired roughly? Is it costly to do so?
Maintenance Of Solar Panels
Q: Can solar panels be installed on flat surfaces?
Yes, solar panels can be installed on flat surfaces. While it is more common to install solar panels on angled surfaces or rooftops to optimize their exposure to sunlight, flat surfaces can also be used. In such cases, mounting systems or support structures are used to tilt the panels at an angle that maximizes their efficiency.
Q: Can solar panels be installed on government buildings?
Yes, solar panels can be installed on government buildings. In fact, many governments around the world are actively promoting the adoption of renewable energy sources, including solar power, in their buildings to reduce carbon emissions and promote sustainability. Installing solar panels on government buildings not only helps in reducing energy costs but also sets an example for the public and encourages wider adoption of renewable energy.
Q: Is it really necessary to make solar panels that expensive?
First Solar recently announced that their costs to produce panels dropped below $ per watt. I don't know how much of that is accounting tricks. Of course, that doesn't mean that they would sell panels for that price - any capitalistic company is expected to drive the price up to what the market will bear. Crystalline silicon panel producers are coming in at about $2.50/watt right now for the best of them. But again, the selling price is what the market will bear.
Q: About how much would it cost to purchase and install solar panels for the average American house so that the house can be off the power grid and use the same amount of electricity as it normally does?
I had a survey of my home and it was estimated at $30K with a 30% rebate from the government. It would take about 5 years to pay back the cost. I elected to go solar water heating instead. 2 panels with piping installed to an 80 gallon electric water heater with an internal heat exchanger. One small photo voltaic panel to run the pump. There is ethylene glycol inside the pipe and it circulates and heats the water. Works excellent. I live in Nor-Cal and we get a lot of sun. I need to comment on another statement that photo voltaic cells cost more energy to produce they generate. Maybe once but not true any longer. {Solar cells and energy payback In the 990s, when silicon cells were twice as thick, efficiencies 30% lower than today and lifetimes shorter, it may well have cost more energy to make a cell than it could generate in a lifetime. The energy payback time of a modern photovoltaic module is anywhere from to 20 years (usually under five)[9] depending on the type and where it is used (see net energy gain). This means solar cells can be net energy producers, meaning they generate more energy over their lifetime than the energy expended in producing them}
Q: How do solar panels affect the property's community engagement?
Solar panels can positively impact a property's community engagement by promoting sustainability and renewable energy. They serve as a visible and tangible example of the property's commitment to reducing its carbon footprint, which can inspire others in the community to adopt similar practices. Additionally, solar panels often generate excess energy that can be shared with the community, fostering a sense of collaboration and local energy independence.
Q: what kind of rays are used in solar panels?
Electrons----- okorder /
Q: want to run 400 watt heater 8 hrs a day how many solar panels do i need and batteries
well, you need to produce 3200 watt-hours per day with your solar panels how many you need depends on the type of panel and size and how much sun you get (the energy of the rays depends on your latitude and the time of year) the amount of batteries you need again depends on your requirements and your insolation if you only need to heat when the sun is shining then you don't need any batteries at all if you want to heat for 8 hours after the sun has quit shining then you obviously need batteries to hold 3200 watt-hrs of electricity to actually size a 3200+ watt-hr solar system you need a lot more information
Q: Are there any noise or sound-related issues with solar panels?
No, solar panels do not produce any noise or sound-related issues. They work silently and efficiently, converting sunlight into electricity without creating any disturbance or noise pollution.

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