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320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box

Good quality Polycrystalline Solar Panel for sales
Good quality Polycrystalline Solar Panel for sales
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320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box

China 320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box supplier
320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box supplier 320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box supplier

Large Image :  320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box

Product Details:

Place of Origin: Ningbo,China
Brand Name: LongSun Solar
Certification: ISO9001:2000, CE, EMC, LVD
Model Number: LS-320W-M

Payment & Shipping Terms:

Minimum Order Quantity: 50pcs
Price: Negotiable
Packaging Details: Single carton packing, pallets packing, wood cases packing.
Delivery Time: 7-15days after receiving your payment( exactly based on your order quantity)
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10000pcs/ month
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Detailed Product Description
Material: High Efficiency MONO Solar Panel 20.5%-21% Description: Black Mono Crystal Solar Panel 320W
Size: 1950*990*45mm Cell Size: 156.75*156.75mm
TPT: Hot Seal Made Of Frame Resistance Glass: 3.2mm High Transimission Glass
EVA: White 0.29mm Thickness Frame: Anodized Aluminum Frame
Warranty: 10years Using Life: 25years
Cells Quantity: 6*12( Totally 72cells) Grade: A
Efficiency: 20.5%-21.5%


                   MONOCRYSTALLINE SERIES.



The working principle of photovoltaic power generation
Photovoltaic is a technology that uses the solar effect of the semiconductor interface to directly convert light energy into electricity. The key component of this technology is solar cells. Solar cells can be packaged and protected in series to form a large area of solar cell components, and then with power controllers and other components to form a photovoltaic power generation device.


The advantage of photovoltaic power generation is that it is less limited by the region, because the sun shines on the earth; The PV system also has the advantages of safety and reliability, no noise, low pollution, on-site power generation and power supply without the need to consume fuel and set up transmission lines, and a short construction cycle.

PV power generation is based on the principle of photovolt effect, using solar cells to convert sunlight directly into electrical energy. Whether it is used independently or connected, the photovoltaic power generation system mainly consists of three parts: solar panels(components), controllers, and inverters. They are mainly composed of electronic components and do not involve mechanical components. Therefore, photovoltaic power generation equipment is extremely refined. Reliable and stable life long, easy to install and maintain. In theory, photovoltaic technology can be used in any field that requires power supply.

Together, up to spacecraft, down to home power supply, up to megawatt power station, down to toys, photovoltaic power supply everywhere. The most basic components of solar photovoltaic power generation are solar cells(tablets), such as monocrystalline Silicon, polysilicon, amorphous silicon, and thin film cells. At present, single crystal and polycrystalline batteries are the most used, and amorphous batteries are used in some minor systems and calculator auxiliary power supplies.




Description: high output / high efficiency mono cells panel 320W

Excellent module efficiency up to 19.58%
Mono crystal solar panel 320W
18V Solar panel
SolarWorld high-quality solar cells





Technical data:


cells size(mm): 156*156
Tolerance: ±3%
Optimum power voltage(WP): 320w
Optimum power voltage(Vmp): 35.6
Optimum operating current(Imp): 8.99
open circuit voltage(Voc): 44.6
short circuit current(Isc): 9.71
Max system power(VDC): 1000V(IEC)
Working temperature range: -40℃ to + 85℃
Efficiency : 18.44%
Max temperature cofficient: -0.48%/℃
Temperature cofficient: -0.34%/℃
ISC temperature cofficient: 0.015%/℃
Rated operating battery: 45+/-2℃
Standard test conditions( STC) 1000W/M²; 1.5AM
Type of connectors: MC4
Size(mm): 992*1950*40




Materials of solar panel

1).Solar Cell------Mono-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.


320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box




             Polycrystalline/Monocrystalline Solar Panel Specification


Model No. Maximum power      ( W ) Dimension      L*W*H               ( MM ) Maximum Power Voltage     ( VMP/V) Optimum Operating Current      ( IMP/A) Open Circuit Voltage     ( VOC/V) Short Circuit Current     ( ISC/A)  Weight    ( KG)
LS-3W-P 3 240*160*17 9 0.33 10.8 0.37 0.5
LS-5W-P 5 290*200*17 18 0.28 21.6 0.31 0.65
LS-10W-P 10 320*290*17 18 0.56 21.6 0.62 1
LS-20W-P 20 485*360*25 18 1.11 21.6 1.23 2
LS-30W-P 30 650*360*25 18 1.67 21.6 1.85 2.5
LS-40W-P 40 420*670*25 18 2.22 21.6 2.47 3.2
LS-50W-P 50 700*540*30 18 2.78 21.6 3.09 4
LS-60W-P 60 820*540*30 18 3.33 21.6 3.70 4.5
LS-80W-P 80 1000*540*30 18 4.44 21.6 4.94 5.8
LS-100W-P 100 1200*540*30 18 5.56 21.6 6.17 7.5
LS-120W-P 120 1330*540*30 18 6.67 21.6 7.41 8.2
LS-150W-P 150 1470*670*35 18 8.33 21.6 9.26 12
LS-200W-P 200 1330*990*35 36 5.56 43.2 6.17 15
LS-250W-P 250 1640*990*40 30 8.33 36 9.26 16.4
LS-270W-P 270 1640*990*40 30 9.00 36 10.00 16.4
LS-300W-P 300 1950*990*45 36 8.33 43.2 9.26 21
LS-320W-P 320 1950*990*45 36 8.89 43.2 9.88 21
LS-340W-P 340 1950*990*45 36 9.44 43.2 10.49 21


Recommended applications:
1. Any large or small connected or off-grid solar power station.
2. Roof systems for commercial and industrial buildings
3. Biochemical system.
4. Any commercial or industrial ground installation system
5. Solar TV sets, solar power generation, solar water heaters, solar street lights, road solar street lights, solar vehicles/electric vehicles, satellites, spacecraft, space solar power stations, energy-saving lights, environmental protection.




Is solar power difficult to use?
Although the production of solar panels incorporates a high-tech manufacturing process, it is really very easy to use a photovoltaic system. Solar panels have no moving parts to wear out, they can be used alone or in combination with other energy sources, and they are silent, reliable and long lasting.

What can you power with Photovoltaics?
A properly designed photovoltaic system can supply electricity for many applications, from small remote lighting needs to megawatts of power for large utility companies. An advantage of photovoltaic power is that it can do anything a traditional power generator can do, only without consuming pollution-causing fuel, or requiring noisy motors.

What is a PV system?
A PV system consists of all the equipment and materials needed to generate solar energy, including solar panels (often called modules), a support structure, wiring, an inverter, a meter and other equipment as required by a specific application. Longsun Solar’ s PV system for commercial buildings, and ET Solar system for residential uses are examples of complete PV systems.

What is a solar module?
Solar modules are series of solar cells, wired together and enclosed protect them from the environment. They are often referred to as in self-contained glass units to solar panels as well.

How do solar cells work?
Solar cells are solid-state devices in which photons (or packets of light) collide with atoms. This process transforms the resulting into electrons. These electrons flow into wires connected to the cell, thus providing electric current to appliances, lighting systems or other electrical loads; and all of the power comes directly from the sun.

What is Photovoltaic Power?
Photovoltaic (PV) power is a term used to describe the process of converting sunlight into electricity with solar cells. These cells are specially constructed from semiconductor materials, and are treated to generate a flow of electricity when sunlight shines on them.


About us:

Longsun Solar( old Kelan Solar), established in 2008, is a professional green power producer and exporter of solar panel and solar module in Ningbo, China.

Our main products are 2 -350 watt mono crystalline and poly crystalline silicon solar panels in standard or special sizes and shapes. We also design solar street light system and solar power systems for homes and industrial use.

Our factory is located in Daxie development zone, with convenient transportation access. It closes to port of Ningbo.


Besides, we have received ISO9001 and CE certificates. High quality raw materials, strict control system, advanced technology and testing equipment ensure each piece of solar panel from LONGSUN SOLAR with extremely supper efficiency and long usage time of 25 years. Until now, our solar panels and systems were exported to the overseas market, like Southeast Asia countries, Middle east countries, South America countries and Africa.


Choose us means you get a reliable partner with mutual development and mutual benefits.



Why Choose Us?

  • Golden supplier approved by MIC.
  • Supply suitable price and high quality product.
  • Offer free samples before order confirmed.
  • Commitment to delivery on time.
  • Offer a perfect pre-sale and after sale service.
  • Providing fast and economical transportation solutions.
  • We guarantee that the product is 100% compensated.
  • Providing product certificate,instructions and installation method.
  • Long-term cooperative attitude and the concept of development together.
  • A professional R&D team with 9 years history and Perfect quality management system.


We have a wild range of successful project all over the world.

We have advanced ,mature and stable supply production line, support your request on solar market.


320W Black TPT High Efficiency PV Panels With IP67 Waterproof Junction Box




2pcs per box, with pallets or without pallets.


Quality and Safety

1. Rigorous quality control meets the highest international standards.

2. High-transmissivity low-iron tempered glass, strong aluminium frame.

3. Using UV-resistant silicon.

4. IS09001/14001/CE/TUV/UL








Payment Term







30% T/T in advance, paid the balance before shipment



30% T/T in advance, paid the balance against copy of B/L

L/C L/C amount above 50,000 usd, we can accept L/C at sight
West Union


Amount lower than 5000usd

West Union

Contact Details

Contact Person: Angela Fan

Send your inquiry directly to us (0 / 3000)