OptiBond product sheet OptiBond The innovative fastening technique for big surface thin-film modules • • • • Structurally optimized for big module sizes Minimum mounting time Anti-theft device integrated Can be mounted starting from a 5 ° module inclination Due to the cost pressure caused by the annual decrease of the compensation for electricity fed into the grid, there is an increasing tendency towards big-surface modules in double-glass design, particularly with large-scale and open area plants, as these modules are likely to bring about a cost reduction both in the production process and in the photovoltaic plant itself. Due to the given environmental conditions (wind suction, snow loads, dynamic loads etc.), module sizes are limited in case of predetermined glass thicknesses, if the modules are supposed to be connected to the respective substructure only at the edges with clamps. The maximum tolerable tension in the glass plates and the structural behaviour of the EVA or PVB, especially at higher temperatures, put clear physical limits to this kind of application. Increased bearing capacity, and with this an extension in module measurements, can only be made possible through the application of appropriate fasteners within the module area. Tensile loads (impact by wind suction), pressure loads (impacts by wind pressure, weight force and snow load) and also shear force (roof parallel part of the resulting power vectors) have to be transferred. Schletter GmbH is developing appropriate bonding techniques in cooperation with numerous module manufacturers to connect these large surface modules in a mechanically optimal manner to the substructure. The mounting system OptiBond offers the components and the technology to mount unframed modules in big PV plants technically optimal and, therefore, also at low cost. Due to technical reasons, the bonding of the OptiBonds can exclusively be made by the module manufacturer himself. Please contact your module manufacturer. © Schletter GmbH • Gewerbegebiet an der B15 • Alustraße 1 • 83527 Kirchdorf/Haag i. OB • Germany • Phone: +49 8072 9191-200 Fax: +49 8072 9191-9200 • E-mail: solar@schletter.eu • www.schletter.eu • updated 07/2012 • subject to change without notice Your contact in the UK: Schletter UK Limited, Phone: +44 1296 461 800, Fax: +44 1296 461 801, E-mail: info@schletter.co.uk 1/2 OptiBond product sheet Characteristics and features • The connection points onto the module are optimized by means of FEM-calculation in such a manner that the module in connection with the fastening system reaches the maximum bearing capacity at a predetermined usage of material (glass thickness). • The OptiBond adhesive anchor is designed in such a manner that the complete glued surface is evenly loaded and thereby the transfer of forces is optimized. • The thickness profile of the adhesive anchor is chosen in such a manner that the mechanical tensions in the module are reduced in a controlled manner and consequently no cracks are caused in the module by tension. • By means of the application of a punctual fastening instead of a linear support, thermal tensions caused by different temperature coefficients and consequently long-term failure are avoided. • The fastening to the substructure is carried out swiftly and safely with a hook-in mechanism. • Process safety during the assembly is granted by a sufficient tolerance equalization in the connection and an audible snap-in connection (Klick position locking device). • The position locking device is also an anti-theft device for the modules. • The bonding is carried out onto profiles, which have been especially developed by Schletter for roofs and open areas and grant maximum load bearing capacity especially for typical elevation angles from 20 to 30 degrees. Material adhesive anchor Aluminum MgSi05 / EN AW 6063, EN AW 6005 Also available with anodised surface Eloxal E6 EV1. Gluing technique On request Optimization of the module connection Structural FEM calculation for the determination of the optimum bonding spots considering the glass characteristics as well as the utilized EVA / PVB on request. Engineering standards and approval of the glued connection Verification of durability according to the current module standards IEC 61215, 61646. Further standards on the extended authorization of glued glass connections and the extended durability verification on request. Structural analysis • • • • • • Load assumptions according DIN 1055, part 4, part 5, EC1, EC3 Structural calculations regarding the glued connections for all relevant load scenarios Individual structural calculation for the complete system (module, connection, substructure) Vibration simulation as well as earthquake simulation for the complete system on request Check of possible feedback of rack reactions on the mechanical module tension. Simulation of all relevant thermal expansions within the temperature ranges that are to be expected We are looking forward to submitting a non-binding offer. 2/2 © Schletter GmbH, 2012, I400051GB, V5 Technical data © Schletter GmbH • Gewerbegebiet an der B15 • Alustraße 1 • 83527 Kirchdorf/Haag i. OB • Germany • Phone: +49 8072 9191-200 Fax: +49 8072 9191-9200 • E-mail: solar@schletter.eu • www.schletter.eu • updated 07/2012 • subject to change without notice Your contact in the UK: Schletter UK Limited, Phone: +44 1296 461 800, Fax: +44 1296 461 801, E-mail: info@schletter.co.uk
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