DAH Solar unveils frameless double-glass TOPCon panels


Chinese solar module maker DAH Solar has developed new TOPCon solar modules with a frameless frontside to improve drainage and allow rain to wash away dust.

The DHN-72X16/DG/FS panels come in four versions, ranging from 570 W to 585 W nominal power, with a power conversion efficiency of 22.07% to 22.65%. They have an open-circuit voltage ranging from 51.0 V to 51.6 V and a short-circuit current of 14.02 A to 14.20 A.

The double-glass panels measure 2,278 mm x 1,134 x 32 mm and weigh 32 kg. They feature 2.0 mm heat-strengthened glass, with anti-reflective coating. The modules have IP68 junction boxes and anodized aluminum alloy frames. They can operate with a system voltage of 1,500 V and in temperatures ranging between -40 C and 85 C.

The temperature coefficient is -0.30% per degree Celsius. The PV panels come with a 15-year product warranty and a 30-year power output guarantee. The degradation in the first year is purportedly 1% and the 30-year end power output is guaranteed to be no less than 87.4% of the nominal output power.

“With the unique frameless design on the front of PV modules, the new module is installable both vertically & horizontally,” a company spokesperson told pv magazine. “It is also capable of preventing snow or sand accumulation, which may ensure an annual power generation increase of 6% to 15%.”

DAH Solar is based in Hefei, China’s Anhui province. It currently operates a 5 GW solar panel factory.

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