Electronics Projects

18V 140W Photovoltaic Solar Cells , Polycrystalline Solar Panel Double Sided Backsheet

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????? ?There& acute;re 7 major inspection procedures for Each piece solar panel during production :
3 times EL testing to ensure panel without micro-break/invisible break;
3 times?appearance inspection?to ensure panel without defect?,
1 time power testing, power inspection tolerance, we ensure each panel has enough power output;
besides the standard inspection, each production procedure will inspect the upwards procedure;?

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Vglory Monocrystalline Solar Panels & Polycrystalline Solar Panels range from 1w to 320w,?guarantee with excellent electrical performance ,producing by?advanced materials and equipments,The exterior design and electrical?performance of each module?are fully tested to guarantee superior quality.?Design to meet unique demand of customers.?Built-in diode?prevents reverse charging .

Our solar products exported to?global like European , UK , Portugal ,America , Egypt , Africa , asia etc

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?Warranties of solar panel :
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1.?10 years limited product warranty
2. 15 years at 90% of the minimal rated power output
3. 25 years at 80% of the minimal rated power output

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Features:
# # High Conversion Efficiency Solar Module?Using UV-resistant silicon.
# 100% A grade cells with positive?power tolerance?low module price
# Anti-reflective and high viscous EVA
# High light transmission Anti-reflective glass
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high frame resistant TPT to laminate and anodized aluminum alloy frame ,

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Be resistant to atmospheric exposure and effects of delaminating

# High quality Junction box with Built-in diodes prevents reverse charging and keep excellent protection ;?
# Aesthetic appearance with excellent efficiency based on innovative, Be resistant to atmospheric exposure and effects of delaminating
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Strong frame, passing mechanical load test of 5400Pa, instead of the normal ,?2400Pa,to withstand heavier snow load and higher wind-pressure

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10?years product warranty , 25 years limited power warranty.?Strong productive ability and quick delivery.?



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? ? ? ? ? ? ?????140W Polycrystalline Solar Panel Electrical Characteristics?

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Maximum Power(Pmax) | 140W | ? |
Power Tolerance | 0~+3% | ? |
Open Circuit Voltage(Voc) | 22.20V | ? |
Short Circuit Current(Isc) | 8.40A | ? |
Maximum Power Voltage(Vmp) | 18.00V | ? |
Maximum Power Voltage(Imp) | 7.78A | ? |
Cell Efficiency | 16.5% | ? |
Max. System Voltage | 1000VDC | ? |
Solar Cells | Polycrystalline156*156mm(6 inch) | ? |
Cells series | 36cs(4*9) | ? |
Bypass Diodes | 3pcs 12A | ? |
Temperature Coefficients of Pmax | -0.47%/°C | ? |
Temperature Coefficients of Voc | -0.33%/°C | ? |
Temperature Coefficients of Isc | 0.05%/°C | ? |
NOTC-Nominal Operating Cell Tepm. | 45℃(±2°C) | ? |
STC Condition | 1000W/m2, AM1.5, 25°C | ? |
Temperature Range | -40C------+85C | ? |
Allowable Hail Load | steel ball fall down from 1m height | ? |
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5> 135W Polycrystalline Solar Module Mechanical Characteristics

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Dimension | 1470*670*30(mm) |
Frame | Anodized Aluminum Alloy |
Construction | Front: High transmision 3.2mmTempered glass; Rear: White PET; Encapsulant: EVA |
Output cables | 4.0m㎡ 12AWG cable with weatherproof connectors.cable lengths 900mm |
Weight | 12.0KGS |
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Front Cover | 3.2mm thick low iron temperature glass |
Back Cover | TPT(Tediar-PET-Tediar) |
Encapsulant | EVA(Ethylene vinyl acetate) |
Frame | Anodized aluminum alloy, double wall |
Junction Box | IP65 rated, TUV certification |
Max Load | Certified to 5400Pa |
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Efficiency:
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1. Low voltage-temperature coefficient allows higher power output at high-temperature condition.
2. High efficient, high reliable solar cells ensure our?product output stability.
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Benefits:
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1. High efficiency, high safety, High stability ,high reliability
2. Output power tolerance ofguaranteed +-3% and ensuring investment return .
Optimized Packaging to protect product during loading and delivery .
4. Strong productive ability and quick delivery .
5. Enjoy our Excellent quality, competitive price, prompt delivery and on-time service
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Applications:?
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1. On-grid commercial ,utiitysolar power systems .
2. Home solar lighting system? .
4. Off-grid solar power system .
5. Communications,pumping and irrigation .
6. Commercial and industrial building roof-top systems?

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History of solar Photovoltaic Technology

The PV effect was observed as early as 1839 by Alexandre Edmund Becquerel, and was the subject of scientific inquiry through the early twentieth century. In 1954, Bell Labs in the U.S. introduced the first solar PV device that produced a?amount of electricity, and by 1958, solar cells were being applied in a variety of small-scale scientific and commercial .

The 1970s& acute;?energy crisis?saw the beginning of major interest in using solar cells to produce electricity in homes and businesses, but prohibitive prices (nearly 30 times higher than current price) made large-scale applications impractical .

Industry developments and research in the following years made PV devices more feasible and a cycle of increasing production and decreasing costs began which continues even today.

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