Solární panel Longi LR7-54HVB-470M, 470 Wp

Detailní popis produktu

The LONGi LR7-54HVB is the flagship module in the EcoLife series, designed for modern residential installations. This isn't just an ordinary panel—it's a product that sets new standards in the residential segment. This model represents the pinnacle of their technological capabilities, achieving efficiency of up to 23.0% at a peak power of 470 Wp , and each unit is covered by an exceptional 30-year warranty on both the product and linear power output. The module is constructed of 108 Back Contact cells arranged in a 6x18 matrix. The front glass is tempered, low-reflective glass, 3.2 mm thick . The frame is made of black anodized aluminum alloy , ensuring both corrosion and UV resistance, as well as a sleek, uniform black appearance throughout the module. ----- BREAKTHROUGH HPBC 2.0 TECHNOLOGY ----- The heart of this module is LONGi's patented HPBC 2.0 technology – High Performance Back Contact – cells with electrical contacts relocated to the back of the cell. One of the greatest advantages of Back Contact technology is its low power temperature coefficient, a mere -0.260%/°C . In traditional modules, busbars run across the front surface of the cell, obscuring part of the silicon and reducing the amount of light absorbed. In Back Contact technology, all electrical connections are invisible from the front – the entire front surface of the cell works and absorbs light. The result? More energy from the same roof area, lower cell operating temperatures, and complete elimination of the risk of local overheating (hotspots) caused by the busbar shading effect. BC technology also makes the panel look completely different from traditional modules. The front side is uniform, deep black, with no visible metal lines. ----- EXTREME EFFICIENCY ----- The LR7-54HVB module has an efficiency of up to 23.0% – one of the highest values ​​achieved by modules designed for residential installations. In practice, this means you can achieve the same system power with fewer panels and a smaller roof area . The module is available in two power variants: 465 Wp (22.8% efficiency) and 470 Wp (23.0% efficiency) . Even with lower solar radiation, measured under nominal NOCT conditions (800 W/m², 20°C, 1 m/s wind), the 470M panel delivers as much as 358 W. The output power tolerance is 0 to +3% , which means you won't receive a unit that's weaker than declared – only more powerful or meets the nominal rating. ----- LOWER LOSSES IN HEAT ----- On a hot summer day, when the module temperature reaches 60°C, a LONGi panel loses about 9% of its power compared to test conditions. A typical PERC module loses 12-13% under the same conditions . This difference directly translates into more kilowatt-hours produced throughout the year – especially in summer, when energy production is at its most intense. The module's operating temperature range is from -40°C to +85°C , guaranteeing reliability in both frosty Polish winters and July heatwaves. ----- 30-YEAR LINEAR POWER DEGRADATION WARRANTY ----- LONGi offers one of the most stringent linear warranties on the photovoltaic market. For a full 30 years, the module retains a minimum of 88.85% of its nominal power output. This is real protection for your investment. Degradation in the first year is less than 1% , and in the subsequent years (2-30) just 0.35% per year . For comparison, standard PERC modules with a 25-year warranty typically degrade by 0.45–0.55% per year, and after 25 years only guarantee 80–82% of their original power.