Schletter Fastening Attachments
A wide range of roof hooks, flashed hanger bolts, standing seam and corrugated metal roof allow allow for mounting on almost any roof construction. Structural Design tools indicate the number of fastening elements that must be installed in the corner and edge zones (array perimeter) of the roof as well as define the possible rail span under specific wind and snow conditions.
Schletter Rails and Cross Rails
Series 05 Rails: The cross-beam or module carrying aluminum rails Eco05, Solo05, Profi05 and ProfiPlus05 are the most commonly used module carrying components of several different Schletter systems, especially in roof top installations. Each of the above mentioned rails has different characteristics with regard to its structural capabilities, such as span or load carrying ability.
S-Rail Series: The Rails in the S-Rail Series are named S0, S1, S1.5, S1.8, S2, S3, S3.5 and S4. These rails are commonly used as module carrying rails and are found mostly in the Schletter ground mounted systems (FS System, PvMax, Park@Sol) and the IsoTop penetrating roof top system. Often these rails are combined with existing structures, such as carports, to accomplish large spans and integrate rail layers.
DN-Rail Series: The DN rail series is mostly used in roof top applications as an additional load distributing beam running below the main racking system, resulting in a layer system or cross-rail system. DN rails are categorized from DN0, DN1, DN2, DN2.5 and DN3. Each of the rails has a different span capability and load-bearing capability. A variety of other profile shapes are available to cover various spans, systems and loading conditions.
Schletter Solar Module Clamps
Schletter mostly uses what is refered to as top-down mounting clamps. The clamps hold the modules to the rack by applying pressure to the module frame in a material-friendly manner. At the same time, the clamps distribute the loads evenly and avoid tensions on the module glass and the module cells. Schletter carries mid- and end-clamps for nearly all sizes of module frames, including ETL listed grounding clamps.
Eco Series Laminate Clamps are used for frameless solar panels. There are different clamps for different module thicknesses. Please note that safety hooks are required for portrait (vertical) installation of modules on tilted systems. On frameless modules there cannot be too much pressure applied to hold the module to the rack. Otherwise the glass modules would break. Therfore, the Eco Series clamps are more of a place holder rather than a structural element. The laminate safety hook prevents gravity from pulling the module out of place.
The Klick system describes the method used to mount the Schletter standard module clamps to the module carrying rail (cross-beam). Module clamps are usually bolted down, so a nut is needed to make the connection. The bolt channels of the Schletter rails are designed to hold that required nut. To eliminate sliding the nuts down the rail channel, Schletter has the Klick System, a small, green, plastic component that snaps into the rail channel and allows the square nut to be slid into the rail at the location needed while still being able to move along the rail channel afterwards. The result is time saved during installation.
The Schletter Rapid2+ Clamp quickly clamps the modules to the cross beams by using pressure to hold the module. The Rapid2+ eliminates the use of nuts and bolts, resulting in shorter mounting times and fewer parts.An integrated gounding pin eliminates the use of extra material to bond modules to the rack. Completely pre-assembled, the clamps snap into the Schletter rail channel and only needs to be tightened.