ZHU JKL156-B-(620-640)NB

620-640W

TOPCon High-Efficiency Mono Solar panel
Bifacial Glass Module Receive Solar Energy
No. of cells: 156
Cell Type: N type Mono-crystalline
Click on the basic parameters below view more

Luan 620W solar panels offer you a 15-year quality promise and a 30-year power guarantee.

What are the advantages of 620-640W double-sided power generation solar panels?

1. Bifacial power generation technology:

Bifacial power generation solar panels not only generate electricity by absorbing sunlight from the front side, but also generate additional electricity from light reflected from the back side. Compared to traditional single-sided solar panels, it improves the overall power generation efficiency by 5%-30%, depending on the installation location and reflective surface conditions.

2. High power output:

The high power output of 620-640W enables higher power generation per unit area, especially in large-scale photovoltaic projects, which can effectively reduce the number of panels installed and lower the cost of supporting facilities such as racking and cables.
Looking for higher power solar panels? Click here

3. High-efficiency power generation:

Combined with advanced TOPCON technology, these panels have higher photoelectric conversion efficiency, and can still maintain better power generation performance in low-light environments, suitable for use in different climatic conditions.

4. Longer life and weather resistance:

The design of double-sided power generation is usually accompanied by more durable encapsulation materials that can withstand harsh environmental conditions, such as high temperature, humidity and sand, so that the performance of the panels in long-term use is less degraded, which prolongs their service life.

5. Higher energy density:

Through efficient double-sided power generation and high power output, the power generation capacity per square meter of these panels is dramatically increased, making them suitable for scenarios where space is limited but efficient power generation is required.

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Product Features
Basic Parameters
Product Features

Excellent electricity generation

Excellent version design effectivelyenhances module output power.

Double sided power generation

The gain of double-sided powergeneration increases with the backlight exposure,reaching up to 25% significantly reducing LCOE.

PlD Resistance Guarantee

Minimize the probability of attenuationcaused by PlD phenomenon throughoptimization ofbattery productionte chnology and material control.

Low Attenuation

The first year attenuation is less than1.0%,with alinear attenuation of 0.4% per year for 30 years.
Leading Quality Standards
15
yr

Quality assurance

30
yr

Power guarantee

-
0.40
%

annual decay

Why Choose N Type 620-640W Solar Panels for Your Commercial Project?

When it comes to selecting solar panels for your business, efficiency and reliability are paramount. Luan Solar’s N Type 620-640W panels deliver on both fronts. Utilizing the latest in N-type technology, these panels boast a higher conversion efficiency compared to traditional P-type panels, ensuring you generate more power even under challenging conditions such as low light or high temperatures.


Advanced N-Type Technology: N-type solar cells are less prone to light-induced degradation (LID), meaning they retain their efficiency over time better than P-type panels. This translates to higher overall energy generation throughout the lifespan of the panels, offering greater long-term value for your commercial installation.


High Power Output: At 620-640W solar panel, these panels deliver exceptional energy output, allowing you to achieve your energy goals with fewer panels. This makes them particularly suitable for commercial projects where maximizing space and minimizing installation costs are critical.


Key Benefits of N Type 620-640W Solar Panels for Commercial Use

Increased Energy Efficiency

With a power rating of 620-640W, Luan Solar’s N Type solar panels are designed to maximize energy production, even in suboptimal weather conditions. Thanks to their superior light absorption and reduced power losses, they ensure optimal performance, making them a reliable solution for businesses looking to enhance energy efficiency and reduce reliance on grid electricity.


Lower Maintenance Costs

The long-term reliability of N Type pv panels means fewer maintenance requirements. They degrade at a much slower rate, retaining up to 90% of their original output after 25 years of use. This low degradation rate ensures that your commercial project continues to benefit from substantial energy savings, with reduced long-term operational costs.


Space Optimization

High power density per panel means fewer panels are required to achieve your energy needs. This is especially beneficial for commercial projects where roof or land space is limited. By installing fewer panels, you can reduce both upfront installation costs and long-term maintenance, while still generating significant power for your operations.


Strong Performance in Low-Light Conditions

Commercial projects often operate in a variety of environments. The 620-640W N Type solar panels from Luan Solar are engineered to perform efficiently even in low-light or shaded areas, ensuring that your business benefits from consistent energy production, regardless of the weather.


Built for Durability in Any Environment


Commercial solar installations require robust, long-lasting solutions, and Luan Solar’s N Type 620W solar panels are designed with durability in mind. These panels are built to withstand harsh environmental conditions such as extreme heat, snow, wind, and salt mist, making them ideal for diverse commercial applications, whether installed on rooftops or ground-mounted solar farms.


Robust Design: Featuring a corrosion-resistant aluminum frame and high-quality tempered glass, our solar panel are designed to endure the toughest environmental conditions, ensuring reliable performance and a long lifespan.


Weather-Resistant: Whether your commercial project is in a coastal region with high humidity or an area prone to heavy snow, our N Type 620-640W solar pv panels provide peace of mind with their strong weather resistance, ensuring stable energy generation year-round.


Maximize ROI with Luan Solar’s N Type 620-640W Solar Panels

One of the main concerns for businesses investing in solar energy is the return on investment (ROI). With the high efficiency, durability, and long lifespan of Luan Solar’s N Type 620-640W panels, you can expect a quicker payback period and greater overall savings. By generating more power with fewer panels, you significantly reduce your installation costs while maximizing your energy savings.

Solar Photovoltaic Panels for Sale

These high efficiency N-Type bifacial solar panels are customisable in terms of specification and power.Topcon solar technology represents one of the most advanced solar cell technologies available to meet customer requirements for high efficiency and high reliability.

Our bifacial solar panels include a wide range of power from 400W to 700W, usually the warranty of solar panels is 15-20 years, during this period you don't have to worry about after-sales problems, we will provide a long 30-year warranty!

For any questions about solar panels, please click below to contact us!

Basic Parameters
Mechanical Parameters
CellN-type TOPCon(156)
Dimensions2465±2mmx1134±2mmx30±1mm
Weight35kg±3%
Glass2.0mm AR coating heatstrengthened glass,low iron
FrameAnodized aluminium alloy
junctionboxIP68,3 diodes
Wireway4mm²,350mm(+)/350mm(-) or Customized Length
Packaging36 pieces/pallet
Loadingquantity40 HC:576pieces; 17.5 meter truck:936pieces;
Drawing
Drawing
Mechanical Parameters
Maxsystem voltage1500V DC
-OT-40°C~+85°C
Fuse's rated current25A
Maxload,front5400Pa
Maxload,back2400Pa
-NOCT45±2°C
Backside rate80%±5°C
safety levelClass Ⅱ
Fire performanceUL Type Ⅰ
I-V Curve
I-V Curve
Electrical Parameters
ModelJKL156-B-620NBJKL156-B-625NBJKL156-B-630NBJKL156-B-635NBJKL156-B-640NB
STC/NOCT
STCNOCTSTC
STCNOCTSTC
STCNOCTSTC
STCNOCTSTC
STCNOCTSTC
Maximum power [W]
620466496
625470500
630474504
635477508
640481512
Maximum working voltage [V]
46.7643.9346.74
46.9344.1146.91
47.1344.3247.11
47.3244.5147.31
47.5344.7247.52
Maximum working current [A]
13.2610.6110.77
13.3210.6610.91
13.3710.7111.06
13.4210.7511.16
13.4710.8111.25
Open circuit voltage [V]
56.0453.9956.02
56.2454.0556.22
56.4453.6256.39
56.6253.8156.61
56.8353.9956.82
Short circuit current [A]
13.9511.1611.23
14.0111.2111.29
14.0711.2611.35
14.1211.3111.41
14.1811.3611.45
EFF [%]   22.18%   22.36%   22.54%   22.71%   22.90%
Power tolerance [W]0 ~+5W
Short circuit current temperature coefficient+0.046%/℃
Open circuit voltage temperature coefficient-0.250%/℃
Maximum power temperature coefficient-0.300%/℃
STCIrradiance 1000W/m2, Cell temperature 25℃,Spectral AM1.5
NOCTIrradiance 800W/m2, Ambient temperature20℃, Spectrum AM1.5,Wind speed 1m/s

Note:The electrical performance parameters in this product catalog do not only refer to a single module, nor are they promised in the contract.
The electrical parameters are only used for comparison between different module types.

If this product does not meet your needs, you can click the link below or tell us your needs directly. We have TOPCON solar panels, PERC solar panels, all-black solar panels, N-type solar cells and modules, P-type solar cells and modules, single-sided solar panels, double-sided solar panels, solar wattage from 400W to 710W, if you need lower or higher wattage, we can also customize it for you!


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