Half-cut Cell Mono PERC Solar Panel 325W 120Cells

Prostar residential PMS325M-120 renewable half cell solar panel 325w

Half cell Solar Panel 325w | 5BB PERC | Monocrystalline | Dimension: 1708x1000x35mm

SKU: PMS325M-120 Category:

Prostar residential PMS325M-120 renewable half cell solar panel 325w has solar cells that are cut in half, which improves the solar module’s performance and durability. Traditional 60-cell and 72-cell solar panels will have 120 half-cut cells and 144 half-cut cells, respectively.

Smaller cells experience reduced mechanical stresses, reaching a decreased opportunity for cracking. Prostar residential PMS325M-120 renewable half cell solar panel 325w has higher output ratings and are more reliable than conventional solar panels.

Today new solar module generation technology has increased the module output of up to 15 watts per module, compared to standard solar modules. Boasting the efficiency of up to 19.99%.

Prostar residential PMS325M-120 renewable half cell solar panel 325w consists of conventional 158.75×158.75mm monocrystalline silicon cells cut in half. So 60-cells standard PV module becomes 120-cells half-cell PV module. As a result, new half cells have shorter bus bar conductors. The shorter conductors mean less amperage, thus, lower resistance. Lower resistance reduces power loss to 6% and increase the output power from 5W to 8W per module. It means 16.5% lower risk of hot-spots due to lower temperature in partially shaded cells compared to standart full cell modules.

Half Cell Solar Module Features

-1- 5 busbar cell design improves module efficiency and offers better aesthetic appearance for rooftop installations

-2- IP68 junction box for long-term weather endurance

-3- Limited power degradation of Eagle module caused by PID effect is guaranteed under strict testing condition (85℃/85%RH,96hours)for mass production

-4- Higher module conversion efficiency thanks to half-cut cell design

-5- LOW hot spot temperature risk

-6- Advanced glass and cell surface textured design ensure excellent performance in low-light environment

-7- Less shade impact

-8- High salt mist and ammonia resistance certified by TÜV NORD

Why cut solar cell in half?

Solar cells are cut in half to reduce the cell-to-module losses during assembly. Power loss is generally proportional to the square of the current times resistance.

Half-cut Cell Electrical Losses

Splitting the cell into two halves the current (not the voltage) of the cell, so when you apply this change to the equation the losses are reduced by 75%. The overall panel efficiency increased by 1,5-3% and this results in a reduction in panel heat production.

PV module with half cells constructively consists of 12 strings of cells instead of 6 strings in conventional 60-cells module. It handles the performance mismatch happened between cells, caused by shading, cells’ initial heterogeneity and uneven degradation.

Half-cut Cell Solar Panel Details

Split Junction Box

Panels with half cut solar cells can have junction boxes that are split into three, as you can see in this picture of  half cut panel. The middle box is for the middle bypass diode.

split junction box
split junction box

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Model PMS325M-120
Electrical Data
Maximum Power (Pmax) 325Wp
 Maximum Power Voltage (Vmp) 34.0V
Maximum Power Current (Imp) 9.56A
Open Circuit Voltage (Voc) 40.6V
Short Circuit Current (Isc) 10.11A
Power Tolerance(Positive) 5%
Module Efficiency STC 19.10%
Maximum System Voltage 1000VDC (IEC), 600VDC(UL)
Series Fuse Rating 15A
Temperature Coefficient of Pmax -0.36%/°C
Temperature Coefficient of Voc -0.28%/°C
Temperature Coefficient of Isc 0.04%/°C
Application Class Class A
Qualification Test Parameters
Dielectric Insulation Voltage 6000VDC max
Operating Temperature Range -40°C to +85°C
Max. Snow Load 5400Pa
Max. Wind Load 2400Pa
Hailstone Impact 25mm(1inch) at 23m/s(52mph)
Fire Rating Class C
Nominal Operating Cell Temperature(NOCT) 45±2°C
Mechanical Characteristics
Cell Type Monocrystalline 158.75×79.36mm / 5BB PERC
Cell Number 120 (6×20)
Dimensions (mm) 1708x1000x35
Weight(Kgs) 18.80(approx)
No. of Draining Holes in Frame 16
Front Glass 3.2 mm, High Transmission, Low Iron,Tempered Glass
Frame Type Clear Anodized Aluminium Alloy Type 6063T5
Junction Box Protection Class IP 68 Rated
Connector Type Compatible type MC4
Output Cables TUV 1×4 mm² / UL 12AWG, Length:300±5 mm
Packing Configuration
Packing Type 31Pcs/CTN, 2Pcs/CTN
Container Loading 858Pcs/40HQ, 330Pcs/20GP
Standard Test Conditions (STC): Irradiance 1000W/m2, AM 1.5, Cell temperature 25°C

Nominal Operating Cell Temperature (NOCT): Irradiance  800W/m2, AM 1.5, Wind Speed 1m/s, Ambient temperature 20°C