20 Years Factory Poly-crystalline Solar Panel 40W Supply to London
Short Description:
We take "customer-friendly, quality-oriented, integrative, innovative" as objectives. "Truth and honesty" is our management ideal for 20 Years Factory Poly-crystalline Solar Panel 40W Supply to London, Our tenet is clear all the time: to deliver high quality product at competitive price to customers around the world. We welcome potential buyers to contact us for OEM and ODM orders
Poly-crystalline Solar Panel 40W
Technical parameter
Maximum Power(W) 40W
Optimum Power Voltage(Vmp) 17.35V
Optimum Operating Current(Imp) 2.31A
Open Circuit Voltage(Voc) 21.16V
Short Circuit Current(Isc) 2.53A
Mechanical Characteristics
Cell Type Polycrystalline 156 x 52mm
No of Cell 36 (4x9pcs)
Dimensions 670x420x30mm
Weight 4.0Kg
Front Glass 3.5mm,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*52mm
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
It was tough to fit this topic of off grid water systems into a 15 minute video! And we totally forgot to mention black and grey water systems. We don’t have to deal with black water because we use a composting toilet. Our grey water system in on the list of projects yet to do . . . we hope to re-use our grey water to water our kitchen garden.
Here are some of the highlights of our learning:
– For rainwater catchment in cold climates, tanks need to be
insulated or sheltered.
– Dark colored tanks will save you the hassle of having to paint
or cover the tank to keep algae from growing inside. There
are plenty of other ways to spend your time on the
homestead.
– An automatic float valve system is ideal for the first flush
when capturing rainwater off a roof. Having to manually
open and close the pipe can be challenging.
– A 3,000 gallon tank would be ideal for a large family, unless
a smaller tank can be filled as needed from a well or spring.
– The largest Berkey available or two Big Berkey filters would be
ideal for a large family.
– Having an indoor hot water tank, as well as a dual hot water
(wood and solar heated) system would be ideal in cold
climates.
– Swale/Pond systems are amazing!
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Welcome to our channel and thank you for taking the time to watch our vlog. We are a family of 8 living in a 600 sq. ft. off grid home on 20 acres in the Ozarks. We are endeavoring to put in “1000′s of roots” on our land through permaculture design principles. We try to upload videos on Mondays, Wednesdays, and Fridays.
Please leave any thoughts or questions you may have in the comments below. We would love to connect with you! And be sure to subscribe and share us with others who may be interested in our videos.
Thanks again for watching,
Kip, Carrie, and children
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