Factory supplied Poly-crystalline Solar Panel 250W Factory from Latvia
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
Robert checks the quality of his solar panels which have been installed for almost 2 years.
Cleaning Solution Video: http://www.youtube.com/watch?v=U_GOaqBh7Yk
This is a little teaser video for my semi-portable solar box.
It’s using an 80 watt cdr-king solar panel and the angle is adjustable. Inside is a 40 Ah motolite solar master battery and a cdrking 10 amp charge controller. There’s a desktop case fan mounted in the top panel to exhaust any heat or battery charging gases from the box. The fan is wired directly to the solar panel so it only runs while its hot outside and the panel is generating power. There’s a little switch box (diy) for turning loads on and off individually.
With the battery removed, I’d estimate the box weighs around 15-20KG and can be moved pretty easily by just one person. With the battery still inside, i’d estimate the weight to be about 35KG and can be moved by one strong person but it’s much easier for two people to use the carrying handles either side.
Aside from expanding my personal solar capacity. This box will serve as a test platform for rescue/charity use. After Yoolanda hit the Philippines, I was a volunteer driver for Oplan Hatid for a few weeks at Villamor airbase. The airforce were flying in survivors from Tacloban and then we’d drive them from Villamor airbase to their family in metro manila, batangas, bulacan, everywhere! Aside from driving, I also provided the wifi that was used by Oplan Hatid volunteers. It was used for map lookups, posting updates or requests for more volunteers, other related activities and to just kill some time while waiting for the planes to land.
I setup multiple access points with different 3G providers for redundancy. Power wasn’t a major issue but occasionally things were unplugged or moved and it did sometimes cause problems. A self contained unit like this that can provide internet, cellphone/radio charging, wifi networking for printers etc etc could be an ideal thing for charities, volunteers and government agencies to keep available for these kind of emergency uses.
