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Home / Products / Solar Panel / WERAN Solar Panel / WERAN 640-670W Back Contact Solar Panel – OEM High-Efficiency Single-Glass PV Module for Distribution and Commercial Projects

WERAN 640-670W Back Contact Solar Panel – OEM High-Efficiency Single-Glass PV Module for Distribution and Commercial Projects

  • Monofacial, Back Contact, N-type
  • Up to 24.8%
  • 640-670 Wp
  • 28.5 kg

▶ High-efficiency single-glass back-contact module for commercial and industrial rooftops

▶ HPBC 2.0 cell technology delivers high power output and lower operating temperature

▶ Lightweight 28.5 kg design is suitable for color steel tile roofs and distributed solar projects

▶ No front gridlines improve module aesthetics and sunlight absorption

▶ Reliable long-term performance under demanding rooftop installation conditions

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  • Technology Monofacial, Back Contact, HPBC 2.0, N-type
  • Power Range 640-670 Wp
  • Region China
  • Weight 28.5 kg
  • Product Warranty 15 Years
  • Power Warranty 1 Years of 99 %, 30 Years of 88.85 %
  • Panel Efficiency 23.7 %-24.8 %
  • Dimension 2382×1134×30 mm
  • Glass 3.2 mm tempered glass
  • Temperature Coefficient of Pmax -0.26 %/°C
  • Cell Number 144
  • Frame Anodized aluminum alloy frame
  • Junction Box IP68, three diodes
  • Cable Cross Section 4 mm²
  • Temperature Coefficient of Voc -0.20 %/°C
  • Temperature Coefficient of Isc +0.05 %/°C
  • Maximum System Voltage DC1500V
  • Maximum Series Fuse Rating 25A
  • Operational Temperature -40°C ~ +85°C
  • Power Output Tolerance 0 ~ +3%
  • Nominal Operating Cell Temperature 45±2°C

  • HPBC 2.0 back-contact cell technology

  • Up to 670 W high power output for C&I rooftop systems

  • Up to 24.8% module efficiency for higher energy density

  • Single-glass structure with lower module weight

  • No front gridlines for premium visual appearance and better light absorption

  • Lower operating temperature under real-world rooftop conditions

  • Suitable for commercial rooftops, industrial buildings, and distributed solar plants

  • 15-year product warranty and 30-year linear power warranty
WERAN 640-670W Back Contact Solar Panel – OEM High-Efficiency Single-Glass PV Module for Distribution and Commercial Projects

Additional Value
30-Year Power Warranty

Mechanical Parameters

Cell Orientation 144 (6×24)
Junction Box IP68, three diodes
Output Cable

4mm², +400, -200mm/±1400mm

Length can be customized
Glass Single glass, 3.2mm coated tempered glass
Frame Anodized aluminum alloy frame
Weight 28.5kg
Dimension 2382×1134×30mm
Packaging 36pcs per pallet
144pcs per 20'GP / 720pcs per 40'HC

Electrical Characteristics
STC: AM1.5 1000W/m² 25°C NOCT: AM1.5 800W/m² 20°C 1m/s Test uncertainty for Pmax: ±3%

Module Type LR7-72HVH-640M LR7-72HVH-645M LR7-72HVH-650M LR7-72HVH-655M LR7-72HVH-660M LR7-72HVH-665M LR7-72HVH-670M
Testing Condition STC NOCT STC NOCT STC NOCT STC NOCT STC NOCT STC NOCT STC NOCT
Maximum Power (Pmax/W) 640 487 645 491 650 495 655 499 660 502 665 506 670 510
Open Circuit Voltage (Voc/V) 53.7 51.04 53.8 51.13 53.9 51.23 54 51.32 54.1 51.42 54.2 51.51 54.3 51.61
Short Circuit Current (Isc/A) 15.13 12.15 15.21 12.22 15.29 12.28 15.37 12.34 15.45 12.41 15.52 12.47 15.6 12.53
Voltage at Maximum Power (Vmp/V) 44.36 42.15 44.46 42.25 44.56 42.35 44.66 42.44 44.76 42.54 44.86 42.63 44.96 42.73
Current at Maximum Power (Imp/A) 14.43 11.56 14.51 11.63 14.59 11.69 14.67 11.76 14.75 11.82 14.83 11.88 14.91 11.94
Module Efficiency(%) 23.7 23.9 24.1 24.2 24.4 24.6 24.8

Operating Parameters
Operational Temperature -40℃ ~ +85℃
Power Output Tolerance 0 ~ 3%
Maximum System Voltage DC1500V (IEC)
Maximum Series Fuse Rating 25A
Nominal Operating Cell Temperature 45±2℃
Protection Class Class II
Fire Rating IEC Class C

Mechanical Loading
Front Side Maximum Static Loading 5400Pa
Rear Side Maximum Static Loading 2400Pa
Hailstone Test 25mm Hailstone at the speed of 23m/s

Temperature Ratings (STC)
Temperature Coefficient of Isc +0.050%/°C
Temperature Coefficient of Voc -0.200%/°C
Temperature Coefficient of Pmax -0.260%/°C

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About Us
Weran Solar Co., Ltd.
Weran Solar Co., Ltd.

Weran Solar Co., Ltd. (WERAN) is China Wholesale WERAN 640-670W Back Contact Solar Panel – OEM High-Efficiency Single-Glass PV Module for Distribution and Commercial Projects Company and WERAN 640-670W Back Contact Solar Panel – OEM High-Efficiency Single-Glass PV Module for Distribution and Commercial Projects Authorized Dealer, founded in 2015 and headquartered in Shanghai, is a global new energy enterprise specializing in the research, development, and application of intelligent solar power generation systems. We integrate product design, manufacturing, sales, installation, and maintenance, delivering reliable and competitive solar solutions to customers worldwide.


Internationally, WERAN supplies high-quality photovoltaic modules to solar projects and distributors across multiple countries — including, but not limited to, Tier 1-equivalent panels with outstanding cost-performance ratios. Leveraging first-hand access to China’s photovoltaic supply chain, we ensure both quality and competitiveness. In the domestic market, our business also covers solar module manufacturing and EPC contracting for new energy projects.

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