Polycrystalline Silicon Solar Modules 72Cell-300W

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10000 watt
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10000000 watt/month

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1. Structure of Polycrystalline Silicon Solar Modules 72Cell-300W Description

Solar panel refers either to a photovoltaics (PV) module, a solar hot water panel, or to a set of solar photovoltaics 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.



2. Main Features of the Polycrystalline Silicon Solar Modules 72Cell-300W


- 10-year limited product warranty1.

- Limited power warranty1: 1 year at 98% of the minimal rated power output, 10 years at 92% of the minimal rated power output, 25 years at

82% of the minimal rated power output.


IEC 61215, IEC 61730, MCS, CE, ISO 9001:2008, ISO 14001:2004, BS OHSAS 18001:2007, PV Cycle, SA 8000

High effi ciency, multicrystalline silicon solar cells with high transmission and textured glass deliver a module effi ciency of up to 16.0%,

minimizing installation costs and maximizing the kWh output of your system per unit area.

Tight positive power tolerance of 0W to +5W ensures you receive modules at or above nameplate power and contributes to minimizing

module mismatch losses leading to improved system yield.


3. Polycrystalline Silicon Solar Modules 72Cell-300W Images




4. Polycrystalline Silicon Solar Modules 72Cell-300W Specification

Electrical parameters at Standard Test Conditions (STC)

Power output

P max



Power output tolerances

ΔP max


0 / + 5

Module effi ciency

η m



Voltage at Pmax

V mpp



Current at Pmax

I mpp



Open-circuit voltage

V oc



Short-circuit current

I sc





5. FAQ of Polycrystalline Silicon Solar Modules 72Cell-300W

Q1:Can we visit your factory?

A1:Sure,welcome at any time,seeing is believing.


Q2:Which payment terms can you accept?

A2:T/T,L/C,Moneygram,Paypal are available for us.


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Q:Air conditioner 25 volt 5 amps: how many solar panels and batteries to run 24/7?
OK, in addition to the solar panels, you wil need an inverter (DC to AC; 2V t0 20V) capable of delivering 20A continuously and as much as 40A for the compressor starting surge, and a fairly large battery bank capable of delivering something over 2000 watts continuously (losses in the charging and conversion process) as well as the surge. So, if your actual demand is now calculated around 2000 watt/hour, and you need to both run the unit and charge batteries during the daylight hours - and considering that the ideal charging rate for a lead-acid battery is on the order of 0% of its capacity, you will need a huge reserve on the battery section and a huge excess on the solar section to make up for the 5 hours maximum input. So, the average high-quality deep-discharge battery will do about 400Ah @ 2.6V. Which comes to 5040 watts for one hour. For round figures, it will give you 2000 watts for 2.5 hours. You will need a minimum of eight of them just to make your system run for the 9 hours you are anticipating. Given that you do not want to run the batteries to zero each night, a 50% reserve would be a wise investment - comes to now twelve (2) batteries. Now, you will have to make 2000 watts (to run the unit) and also produce and another 8600 (per hour for five hours) watts to charge the batteries for the next night. Again, for round figures, you will need 0,000 watts of solar power, or seventy (70) panels. At ~0 watts/s.f. (00 watts/meter), that comes to about 000 square feet or 00 square meters. Modern non-crystaline panels may reduce this by 20%, or so but no more than that. You will be charging the batteries at roughly 20% of their discharge capacity - which will pretty much cut their service live in half, or so. As the average deep-discharge battery has about an 8-year life span under ideal conditions (and your situation will be far from ideal) you may expect to replace them every four years or so with good care. Much less with no care.
Q:Advice on Solar Panel....................................?
I okorder.com/
Q:Solar panel Efficiency in Tropics?
0 kWh
Q:how do you make solar panel?
Solar panel is a sheet of highly expensive, purest Silicon manufactured in a factory of exceptional killingly stringent specifications. You can't do that as a cottage industry, at least the material.
Q:How to maintain a battery with a solar panel?
What I would suggest is that you find a panel that is rated for 00 mA, at any voltage higher than 8 volts. A 2 or even 8-volt panel will do, because the voltage will drop to match the battery. Then I would get a diode to put in series with the panel to prevent the battery from discharging through the panel at night. That's called a blocking diode. At such low currents, a charge controller is not worth it. There is not enough power to overheat the battery, which is principally what a charge controller protects against in a larger system. Be aware that you could also simply plug a trickle charger for the battery into the wall outlet, at a cost of less than a penny a day in electricity.
Q:Why do solar panels stop working?
They really don't stop working unless there is some sort of manufacturers deficiency, where a connecting tab(wire) is broken. Generally their output just decreases over the years. There are plenty of solar panels over 40 years old still producing electricity, which is 0 years past the typical 30 year manufacturers waranty.
Q:Help with Solar Panels?
Guide okorder.com/
Q:How to connect a solar panel to an outlet?
A typical solar panel will deliver 50 watts of power in the form of 24 volts DC. You need 20 volts AC. So here is what it takes: Since you will need at least 200 watts to do a small TV, you need four solar panels, and a solar controller. Then you need a 24 volt solar type battery to load the output of the panels. Next you need an inverter. This is a device that changes 24 volts DC into 20 volts AC, which you can wire to a standard outlet for the TV set. Solar panels cost around $6 per watt of power. 200 X $6 = $200 Solar Controller will cost around $50 The battery will cost around $00 The inverter will cost around $200 You could get by with less than 200 watts of solar panels if you just let it charge the battery all day and only use the TV for an hour or two in the evening with the TV running on the inverter which is powered by the battery. The link is for a similar system ready to go. Wind is not a viable option.
Q:Single Solar Panel savings?
I am afraid you are in for some disapointment. A typical solar panel might put out something over 00 watts, and cost a pretty big bundle. Then, what would you do with the power? It will be low voltage DC. You could charge a battery, or run a DC appliance. You would get less than ten cents worth of electricity per day. If you wanted to use it for household appliances, you would need an inverter. More big bucks. Type solar panels in the green search box at the top of this page, and read previous Q A. Also do the same on the Internet. Sorry to be a wet blanket.
Q:Feedback on Solar Panels?
Our solar electric system has been up for 5 years now. No trouble so far, and output has not diminished noticeably. They have survived gale-force winds (gusting to 00 mph) without loosening. If I installed the same system today, it would have been half the cost for the same power, and smaller, too. Can't say I have any regrets. It keeps up with our yearly electricity demand, but we live in a mild climate. We only turned on our heat today, and have no A/C in the summer.

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