Trina TSM-505NEG18RC.27 Dual Glass Transparent Bi-facial Black Frame

The Trina Solar TSM-505NEG18RC.27 Vertex S+ Dual Glass Transparent Bifacial Black Frame is a 505 Wp N-type i-TOPCon solar module featuring a bifacial dual-glass construction, black anodised aluminium frame and transparent spaces between the solar cells. When installed in an open structure, light can pass through the spaces between the cells, while the bifacial solar cells can also convert irradiance reaching the rear side into electrical energy. The module has a bifaciality of 80% ±5%. This makes it suitable for both conventional rooftop installations and visible applications such as carports, verandas and canopies. With a positive power tolerance of 0/+5 W, a module efficiency of 22.7% and a power warranty of 87.4% after 30 years, the module combines high performance with an attractive transparent dual-glass appearance.

• 505 Wp + bifacial power gain: 505 Wp nominal power under STC and 559 Wp total equivalent power under BNPI test conditions with 135 W/m² rear-side irradiance; bifaciality 80% ±5%.
• Dual Glass Transparent Black Frame: Black anodised aluminium frame and dual-glass construction with transparent spaces between the cells, allowing light to pass through between the cells when installed in an open structure.
• N-type i-TOPCon, 108 cells and 22.7% module efficiency: High module power in compact dimensions of 1,961 × 1,134 mm.
• 25-year product warranty and 30-year power warranty: Maximum degradation of 1% in the first year and maximum annual degradation of 0.4% from year 2 through year 30, with 87.4% guaranteed power after 30 years.
• Dual glass and high mechanical load resistance: 1.6 mm heat-strengthened glass on both the front and rear, tested up to 5,400 Pa snow load and 2,400 Pa wind load.
• Maximum system voltage of 1,500 V DC: Designed for use with mainstream inverters, optimisers and mounting systems, provided that the electrical specifications and string configuration remain within the permitted limits of the inverter.

505 Wp N-type i-TOPCon bifacial dual-glass solar module with transparent spaces between the cells

The TSM-505NEG18RC.27 belongs to the Trina Solar Vertex S+ series and combines N-type i-TOPCon cell technology with a bifacial dual-glass construction. The module consists of 108 cells with transparent spaces between them. When installed in an open structure, part of the incoming light can pass through the module between the cells. This creates an open, light-transmitting appearance and makes the module particularly attractive for visible applications such as carports, verandas and canopies. The solar cells themselves are not transparent; the light transmission occurs through the spaces between the cells.

In addition to front-side irradiance, the bifacial N-type i-TOPCon cells can convert irradiance reaching the rear side into electrical energy. The bifaciality is 80% ±5%. According to the datasheet, the equivalent power is 530 Wp at 5% backside power gain and 556 Wp at 10% backside power gain. Under BNPI test conditions – 1,000 W/m² front-side irradiance and 135 W/m² rear-side irradiance – the 505 W version delivers a total equivalent power of 559 Wp. Actual bifacial energy yield depends on installation conditions, including ground reflectivity, mounting height, tilt angle, shading and the amount of irradiance reaching the rear side.

For correct pairing with an inverter, the electrical characteristics of the complete string must be checked. Under STC, the TSM-505NEG18RC.27 has a Vmpp of 33.5 V, Impp of 15.09 A, Voc of 40.3 V and Isc of 15.89 A. Under BNPI test conditions, Impp increases to 16.68 A and Isc to 17.65 A. Always check the inverter's MPPT voltage range, maximum DC input voltage, maximum input current and maximum permitted short-circuit current, together with the selected string configuration. The module's maximum system voltage is 1,500 V DC (IEC), and the maximum series fuse rating is 30 A. Explore our Solis inverters or GoodWe inverters for a suitable system configuration.

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