The German company said its new products are suitable for PV systems with tilt angles from 0 to 15.6 degrees.
German PV system supplier Wattstone has launched three new concrete foundations for rooftop PV projects.
“The concrete bases are ideal for the easy installation of PV systems on straight surfaces such as flat roofs or terraces, but also on gardens, without the need to drill through the roof skin or add additional weights,” the manufacturer said in a statement. a statement. .
The company said the new L-Shap products are suitable for both south- and east-west oriented arrays with a tilt angle ranging from 0 to 15.6 degrees.
“Previously there were only L-stones with a tilt angle of 10 degrees,” says Wattstone. “The mounting brackets are made of exposed concrete and are not only visually attractive, but also robust and durable.”
The modules are easily attached via the integrated threaded sleeves with four module clamps and screws. An additional threaded sleeve on the front of the L-bricks also allows the installation of a windshield or cable tray. An integrated hole with a diameter of 10 mm allows for the easy installation of microinverters or cable trays, making it easier to integrate additional components, according to the company.
Each model is specially designed for a specific orientation of the PV modules. Packaged east-west or south sets include plugs, screws and all connecting elements.
The company claims that the 28kg L-bricks with a 15-degree slope can deliver a 3% increase in energy yield compared to 10-degree systems. “These are particularly suitable for a south orientation with a self-developed wind deflector or an east-west installation in which the two L-stones are placed back to back and connected to each other,” it is further explained. The 15 degree angle was also said to have a self-cleaning effect in removing dirt and grime.
The 0 degree slope concrete bases weigh 43kg and are said to be ideal for vertical installations. According to Wattstone, these longer L-bricks are compatible with the clamping points of various module manufacturers.
The new products have been wind tunnel tested according to the DIN-EN 1991-1-4:2021 standard and are said to offer a high level of safety “when installed correctly”. On request, object-specific wind load calculations can be performed to meet specific requirements.
The concrete bases with a slope angle of 15 degrees cost € 179 excluding VAT for a set of two solar panels in a row structure, while the products with a slope angle of 10 degrees cost € 169.
The bases with an inclination angle of 0 degrees are available for €89.13.
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