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EGing EG-685NT66-HU/BF-DG 680W N-Type TOPCon Bifacial Solar Panel
Model EG-685NT66-HU/BF-DG | N-Type TOPCon | 132 Half-Cell | Bifacial | 1500V System Voltage
Product Overview
The EGing EG-685NT66-HU/BF-DG 680W N-Type TOPCon bifacial solar panel delivers very high efficiency and reliable power for large projects. This advanced module uses N-Type TOPCon cells and bifacial glass construction to increase energy yield on every suitable site. A maximum front-side power output of 680 W is combined with panel efficiency up to 21.89 percent for strong performance in constrained spaces. The panel sits in the Aurora Pro Series range from EGing PV and is engineered for utility scale and commercial rooftops. Bifacial technology allows additional harvest from reflected light on the rear side under suitable mounting conditions. A robust anodized aluminium frame, 2 mm dual glass design and IP68 junction box support long term durability. Installers gain a dependable Tier 1 module with low degradation and optimized temperature behavior. Project owners benefit from a long linear power warranty backed by an experienced Chinese manufacturer founded in 1998. This makes the EGing PV 680 module a strong option where long term output and bankability matter most.
Key Benefits
High power density for large arrays: Each module delivers up to 680 watts at STC, allowing more system power from fewer panels on commercial roofs and ground mount sites.
Efficient N-Type TOPCon cell design: N-Type TOPCon cells with multi busbar layout reduce resistive losses and improve light capture, which supports strong performance in real conditions and higher specific yield.
Bifacial energy gain potential: The bifacial double glass structure captures light from the front and rear sides, enabling extra energy generation on reflective surfaces such as light concrete, white membranes or snow.
Low degradation and stable output: A linear power warranty with only 0.42 percent annual degradation supports 90 percent power at year ten and 87.4 percent at year thirty, helping projects meet long term yield targets.
Durable construction for harsh sites: A 2 millimetre glass thickness, anodized aluminium alloy frame, MC4 compatible connectors and IP68 junction box deliver strong mechanical stability and improved resistance to moisture and dust ingress.
Bankable Tier 1 manufacturer: EGing Photovoltaic Technology, a BloombergNEF Tier 1 producer since 1998, offers in house CNAS approved testing and TUV and VDE certified processes that support project financing and investor confidence.
How It Works
The EGing PV 680 N-Type TOPCon bifacial module converts sunlight into electricity using advanced crystalline silicon cells. Incoming light on the textured glass surface is absorbed by N-Type TOPCon cells arranged in a 132 half cell layout. These cells generate direct current that flows through multi busbar conductors with reduced resistance. The bifacial glass glass design also captures reflected light at the rear side under suitable installation conditions. Both sides feed current through a robust IP68 junction box and MC4 compatible connectors into the DC strings. Inverters then convert this DC power into usable alternating current for on site loads or grid export. Optimized temperature coefficients and low light response support energy production through varied climates and seasons while minimizing performance losses.
N-Type TOPCon cell architecture: N-Type TOPCon cells use a different doping structure than conventional P-Type cells, which reduces light induced degradation and improves carrier lifetime. This structure helps the module maintain higher power at elevated temperatures, supported by a Pmax temperature coefficient of around -0.30 percent per degree Celsius.
Bifacial double glass construction: The module uses 2 millimetre glass on both sides instead of a polymer backsheet, allowing light to reach the rear cell surfaces. When installed above reflective ground or roofing, the rear side contributes additional power and can push effective module efficiency beyond the front side value.
Multi busbar and low resistance layout: A multi busbar cell design shortens the distance that current travels through the fingers, which lowers resistive losses. Increased busbar reflectance also sends more light back into the cell, improving energy capture and helping the panel reach its 660 to 685 watt power range.
Optimized for varied conditions: The module performs well under low light thanks to advanced surface texturing and anti reflective glass treatment. Stable electrical characteristics at the nominal operating cell temperature help maintain consistent output across seasonal temperature swings on both rooftop and ground mount systems.
Technical Specifications
| Manufacturer | EGing Photovoltaic Technology Co., Ltd. |
| Model Number | EG-685NT66-HU/BF-DG |
| Technology | N-Type TOPCon bifacial, Aurora Pro Series |
| Power Range | 660 Wp to 685 Wp (front side, STC) |
| Maximum Power (Pmax) - STC | 680 Wp front side, up to 753 Wp with 10% rear gain |
| Module Efficiency (front) | 21.89 % at 680 Wp (range 21.24 % to 22.05 %) |
| Bifacial Output Efficiency (10% gain) | Up to 24.24 % module efficiency at 10 % rear gain |
| Power Tolerance | 0 to +3 % positive power tolerance |
| Voltage at Maximum Power (Vmpp) | 39.63 V at 680 Wp (STC) |
| Current at Maximum Power (Impp) | 17.16 A at 680 Wp (STC) |
| Open Circuit Voltage (Voc) | 47.43 V at 680 Wp (STC) |
| Short Circuit Current (Isc) | 18.18 A at 680 Wp (STC) |
| Nominal Operating Cell Temperature (NOCT) | 44 ± 2 °C typical |
| Operating Temperature Range | -40 °C to +85 °C |
| Temperature Coefficient of Pmax | -0.30 % / °C |
| Temperature Coefficient of Voc | -0.25 % / °C |
| Temperature Coefficient of Isc | +0.04 % / °C |
| Maximum System Voltage | 1500 V DC |
| Series Fuse Rating | 30 A |
| Total Degradation Rate | 0.42 % per year (linear) |
| Guaranteed Power at 10 Years | 90 % of initial power output |
| Guaranteed Power at 30 Years | 87.4 % of initial power output |
| Module Dimensions (H x W x D) | 2384 x 1303 x 35 mm |
| Weight | 38.3 kg |
| Cell Count and Type | 132 N-Type monocrystalline half cells |
| Cell Size | 210 x 105 mm |
| Front and Rear Glass Thickness | 2.0 mm tempered glass each side |
| Frame Type | Anodized aluminium alloy frame |
| Junction Box Protection Class | IP68 rated junction box |
| Connector Type | MC4 compatible connectors |
| Cable Cross Section | 4 mm² solar cable |
| Cable Length | Portrait layout: +300 mm / -300 mm |
Certifications & Compliance
Certifications: CNAS approved in house PV laboratory, TUV certified testing, VDE certified quality processes, BloombergNEF Tier 1 manufacturer status.
Inverter Compatibility: Designed for modern string and central inverters supporting 1500 V DC systems, with MC4 compatible connectors for broad compatibility across leading inverter brands.
Environmental: Double glass bifacial construction, IP68 junction box and anodized aluminium frame support use in demanding outdoor environments with high humidity, dust exposure, snow loads and wind loads when correctly engineered.
Warranty: 12 year product warranty covering material and workmanship defects, plus 30 year linear power warranty with 0.42 percent annual degradation, guaranteeing 90 percent power at year ten and 87.4 percent at year thirty under standard conditions.
Documentation
Product Datasheet (PDF)● Available | Contact us for lead time and pricing
| SKU | PES-SPS-SOL-4299 |
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| Manufacturer | PES Supply |
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| Pallet price | |
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