Factory Promotional Poly-crystalline Solar Panel 250W Factory in Sao Paulo
Short Description:
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Poly-crystalline Solar Panel 250W
Technical parameter
Maximum Power(W) 250W
Optimum Power Voltage(Vmp) 30.25V
Optimum Operating Current(Imp) 8.26A
Open Circuit Voltage(Voc) 36.61V
Short Circuit Current(Isc) 8.89A
Mechanical Characteristics
Cell Type Polycrystalline 156x156mm (6 inch)
No of Cell 60 (6x10pcs)
Dimensions 1640x990x40mm
Weight 18.5KGS
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——Polycrystalline 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
A glitter refill based on Calcium Chloride to create a high specific gravity solution to support glitter. The colour is inkjet refill ink with a few drops of magenta and about ten drops of yellow to give a bright tungsten-friendly orange colour.
There are various grades of calcium chloride, and the best choice is food-grade as it is very pure, but the stuff I got was “hexahydrate” (six molecules of water?) and very slushy. I guess if you could get pure CaCl2 in “dihydrate” form (which is very dry and white) it would require much less weight of the calcium chloride to water. As it is, it required only about 300ml of water to 1kg of the slushy calcium chloride.
The choice of glitter is important too. It should be coated glitter which has the layer of clear plastic, a metallisation layer and a protective coating that prevents the metal from tarnishing or corroding in the strong solution. Fortunately most common glitters on ebay seem to be coated. Some coloured glitters lose their coloured coating into the water, so I tend to recommend using plain silver glitter.
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Facebook: Krungthep Solar
Fanpage: แผงโซล่าเซลล์
Website: www.extra-solar.com
Line: sunnergygrp
Tel: 061-545-5353
