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Model EG-685NT66-HU/BF-DG | N-Type TOPCon | 132 Cells N-Type Mono | Bifacial | 1500V System Voltage
The EGing EG-685NT66-HU/BF-DG 685W N-Type TOPCon bifacial solar panel delivers high performance for large scale and commercial solar projects. This advanced module uses N-Type TOPCon cells and bifacial glass construction to harvest energy from both sides of the panel. Rated up to 685 Wp with module efficiency reaching 22.05%, it supports powerful arrays in limited roof or ground space. The Aurora Pro Series design offers low degradation and strong temperature behavior for long term output. A positive power tolerance from 0 to +3% helps ensure reliable nameplate performance in real conditions. The panel is engineered with 132 N type monocrystalline cells, a durable anodized aluminum frame, and IP68 junction box protection. With a maximum system voltage of 1500 V and robust 30 A series fuse rating, it integrates seamlessly into modern high voltage strings. This EGing PV 685 module is an excellent choice where high yield, reliability, and long lifecycle value are essential. Its bifacial design further increases energy yield when installed above reflective surfaces or light colored roofs.
Ultra high power density: Up to 685 Wp output and efficiency up to 22.05% reduce required array area. Higher power density allows more generation on constrained roofs or sites.
Bifacial energy gain: Bifacial glass construction captures light from the front and rear surfaces. This design can increase total energy yield, especially over reflective ground or light decks.
Low degradation performance: An annual degradation rate of only 0.42% supports long term power stability. After 30 years, at least 87.4% of initial output is warranted under the linear power warranty.
Strong temperature behavior: A temperature coefficient of Pmax at -0.3% per °C helps sustain output on hot days. Better temperature response means more real world energy in warm climates and summer peaks.
Robust build and safety: Anodized aluminum frame, 2 mm glass, and IP68 junction box ensure durable operation. MC4 compatible connectors, 4 mm2 cables, and 1500 V rating support safe high voltage systems.
Trusted Tier 1 manufacturer: EGing PV has operated since 1998 as a BloombergNEF Tier 1 global producer. Strict in house testing and TUV and VDE certified labs enhance product reliability and consistency.
This EGing TOPCon bifacial module converts sunlight into electricity using advanced N type monocrystalline cells. Each of the 132 cells sits between layers of glass and encapsulant to maximize light capture and durability. When sunlight hits the front surface, photons excite electrons in the semiconductor material and create direct current power. The bifacial rear surface also absorbs reflected and diffuse light from the ground or nearby surfaces. Busbars and multi busbar design guide the produced current through low resistance pathways to the junction box. From there, MC4 connectors deliver the DC power to inverters, which convert it into usable AC electricity. The module is optimized to maintain performance under low light, high temperatures, and long operating lifetimes. Carefully managed degradation and a linear performance warranty provide predictable long term energy generation.
N-Type TOPCon cell technology: The panel uses N type TOPCon cells that offer lower degradation than standard P type cells. These cells have improved passivation and contact structures that reduce recombination losses. As a result, more of the captured sunlight is converted into electricity across the life of the panel.
Multi busbar and bifacial design: Multi busbar cell design shortens current paths and lowers series resistance within each cell. This layout improves current collection and reduces power loss at interconnections. The bifacial glass glass structure lets light enter from both sides to boost energy harvest. Rear side gain can significantly increase annual output on bright or reflective surfaces.
System integration and protection: The module connects into 1500 V DC strings with 30 A series fuse protection for safety. An IP68 junction box shields internal connections from dust and water ingress in harsh sites. Temperature coefficients are carefully controlled so power loss stays modest as cell temperature rises. Combined with precise factory testing, this ensures dependable output across diverse climates and seasons.
| Manufacturer / Brand | EGing Photovoltaic Technology Co., Ltd. (China) |
| Model Number | EG-685NT66-HU/BF-DG |
| Technology | Aurora Pro Series N-Type TOPCon, bifacial glass glass module |
| Power Range | 660 Wp to 685 Wp |
| Maximum Power at STC (Pmax) | 685 Wp (front side rating) |
| Module Efficiency Range | 21.24% to 22.05% (front side) |
| Voltage at Pmax (Vmpp) | 39.85 V (685 Wp) / 37.3 V (520 Wp entry) |
| Current at Pmax (Impp) | 17.19 A (685 Wp) / 13.95 A (520 Wp entry) |
| Open Circuit Voltage (Voc) | 47.64 V (max bin) / 45 V reference value |
| Short Circuit Current (Isc) | 18.22 A (max bin) / 14.68 A reference value |
| Power Tolerance | 0 to +3% positive power tolerance |
| Total Degradation Rate | 0.42% per year (linear performance assumption) |
| Nominal Operating Cell Temperature (NOCT) | 44 ± 2 °C (typical operating condition) |
| Operating Temperature Range | -40 °C to +85 °C |
| Temperature Coefficient of Pmax | -0.30% per °C |
| Temperature Coefficient of Voc | -0.25% per °C |
| Temperature Coefficient of Isc | +0.04% per °C |
| Maximum System Voltage | 1500 V DC (IEC) |
| Series Fuse Rating | 30 A maximum series fuse |
| Bifacial Output (10% rear gain) | Up to 753 Wp equivalent, module efficiency up to 24.24% |
| Cell Type and Count | 132 N-type monocrystalline TOPCon cells, 210 x 105 mm |
| Panel Dimensions (H x W x D) | 2384 x 1303 x 35 mm |
| Weight | 38.3 kg |
| Glass Thickness and Type | 2.0 mm tempered glass, bifacial glass glass structure |
| Frame Material | Anodized aluminum alloy frame with mounting and drainage holes |
| Junction Box Protection | IP68 junction box, factory fitted |
| Cable and Connector Type | 4 mm² cables, MC4 compatible connectors, +300 mm / -300 mm length in portrait |
Certifications: CNAS approved in house PV lab with TUV and VDE certified testing. EGing PV is listed as a BloombergNEF Tier 1 global manufacturer for bankable quality.
Inverter Compatibility: Designed for modern 1500 V string and central inverters in commercial, industrial, and utility projects. MC4 compatible connectors support broad inverter and optimizer platforms.
Environmental: Bifacial glass glass construction and IP68 junction box support demanding outdoor environments. Suitable for a wide temperature range from -40 °C to +85 °C under standard installation rules.
Warranty: 12 year product warranty covers materials and manufacturing quality. Linear power warranty guarantees 90% of initial output at 10 years and 87.4% at 30 years, supported by a low 0.42% annual degradation rate.
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