Factory wholesale price for Poly-crystalline Solar Panel 300W Supply to Afghanistan
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Poly-crystalline Solar Panel 300W
Technical parameter
Maximum Power(W) 300W
Optimum Power Voltage(Vmp) 37.15V
Optimum Operating Current(Imp) 8.08A
Open Circuit Voltage(Voc) 45.30V
Short Circuit Current(Isc) 8.87A
Mechanical Characteristics
Cell Type Poly-crystalline 156x156mm (6 inch)
No of Cell 72 (6x12pcs)
Dimensions 1956x992x50mm
Weight 22.5Kg
Front Glass 3.2mm,High Transmission, Low Iron,Tempered Glass
Junction box IP65 Rated
Output Cable TUV 1×4.0mm2/UL12AWG,Length:900mm
Temperature and Coefficients
Operating Temperature(°C): -40°C ~ + 85°C
Maximum System Voltage: 600V(UL)/1000V(IEC) DC
Maximum Rated Current Series: 15A
Temperature Coefficients of Pmax: -0.47%
Temperature Coefficients of Voc: -0.389%
Temperature Coefficients of Isc: 0.057%
Nominal Operationg Cell Temperature (NOCT): 47+/-2°C
Materials of solar panel
1).Solar Cell——Poly-crystalline solar cell 156*156mm
2).Front Glass——-3.2mm, high transmission, low iron, tempered glass
3).EVA——-excellent anti-aging EVA
4).TPT——-TPT hot seal made of flame resistance
5).Frame——anodized aluminum profile
6).Junction Box——-IP65 rated, high quality, with diode protection
Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resistance.
Features
1. High cell efficiency with quality silicon materials for long term output stability
2. Strictly quality control ensure the stability and reliability, totally 23 QC procedures
3. High transmittance low iron tempered glass with enhanced stiffness and impact resistance
4. Both Poly-crystalline and Mono-crystalline
5. Excellent performance in harsh weather
6. Outstanding electrical performance under high temperature and low irradiance
Quality assurance testing
Thermal cycling test
Thermal shock test
Thermal/Freezing and high humidity cycling test
Electrical isolation test
Hail impact test
Mechanical, wind and twist loading test
Salt mist test
Light and water-exposure test
Moist carbon dioxide/sulphur dioxide
ECOWORTHY public their solar panel ICO-SPC-20 as 18V 20W (@ Aliexpress).
In reality, this is very low performance panel providing less than 5W at sunny day.
This video comparing this panel with another panel about the same size.
The Eco-Worthy is 41X31C”m (1271cm2) and the reference panel is 38X38 cm (1444cm2).
The reference panel is 13% larger but providing 84% more power!
At sunny day, the reference panel providing 57.4W/M2 and the Eco-Worthy is providing 35.4 W/M2 only.
At less optimized condition (less sunny) differences are worse.
I sent the numbers to ECOWORTHY Official Store at Aliexpress, but they claim the product is perfect, and keep asking for additional info.
So I made this video,
DO YOU THINK IT”S PERFECT???
Test was done with MPP controller adjusting to 18V (panel side).
Check best price and review at http://www.amazon.com/dp/B00E7NDMC4/?tag=birdblueg-20 Get a Renogy 50 Watt 12 Volt Monocrystalline Solar Starter Kit.] Compare prices from all Sellers: Renogy 50 Watt 12 Volt Monocrystalline Solar Starter Kit.
