Prostar PMS390M-144 monocrystalline perc half cell solar panels 390w is increased efficiency of half cut solar cells produce higher power output compared to a traditional solar module. This in turn increased the overall efficiency of the entire solar power system – be it solar power packs, rooftop solar power plants and land based solar power plants. Smaller cells experience reduced mechanical stresses, reaching a decreased opportunity for cracking. Prostar PMS390M-144 monocrystalline perc half cell solar panels 390w 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 PMS390M-144 monocrystalline perc half cell solar panels 390w consists of conventional 158.75×158.75mm monocrystalline silicon cells cut in half. So 72-cells standard PV module becomes 144-cells half-cell solar 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.
Solar Panels Specification
Model
PMS390M-144
Electrical Data
Maximum Power (Pmax)
390Wp
Maximum Power Voltage (Vmp)
40.8V
Maximum Power Current (Imp)
9.56A
Open Circuit Voltage (Voc)
48.6V
Short Circuit Current (Isc)
10.06A
Power Tolerance(Positive)
5%
Module Efficiency STC
19.14%
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 158.75x79.36mm / 5BB PERC
Cell Number
144 (6x24)
Dimensions (mm)
2038x1000x40
Weight(Kgs)
21.80(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 1x4 mm² / UL 12AWG, Length:300±5 mm
Packing Configuration
Packing Type
27Pcs/CTN, 2Pcs/CTN
Container Loading
638Pcs/40HQ, 253Pcs/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
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- Excellent space utilization performance, increasing power density effectively and reducing costs of solar panel -7- Lower temperature coefficient, zero depth reflection increasing -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. 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.
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
A split junction box leads to lesser metallization than a standard panel in comparison to poly or mono panels and creates lesser internal resistance which saves space.
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 PMS390M-144 monocrystalline perc half cell solar panels 390w consists of conventional 158.75×158.75mm monocrystalline silicon cells cut in half. So 72-cells standard PV module becomes 144-cells half-cell solar 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. 
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. 
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