SECT
| V1 | INSTALLATION MANUAL | 202102
6
SCHLETTER SOLAR GMBH | SUBJECT TO CHANGES
2. LAYOUT AND ASSEMBLY
2.1. Fixing spacing
When SECT is installed in columns, the fixing spacing (distance between channel feet) is equal
to the purlin spacing, because a channel foot is used at each point where a channel crosses a
purlin. Also, the channels need to be extended past the modules to reach the next purlin
(maximum allowable cantilever between fixing and edge of module is 100 mm). When SECT is
installed in rows, the fixing spacing can be reduced down to the roof sheet rib spacing.
However, the purlin spacing needs to match the approved “clamping zones” defined by the
module installation manual, e.g., from 1000 to 1600 mm, to fit the typical “10-25 % clamping
zones” for a 2 m long module.
2.2. Length of column or row
SECT suits industry standard modules with nominal dimensions of 1000 x 2000 mm and
a 40 mm frame height. The length of a column of modules is a function of the exact width of
the modules used. For example, if JA Solar JAM72S10 modules are used, they have a width
of 996 mm and each pair of modules has a ‘repeat distance’ of 2021 mm.
SECT in a column
(or landscape format)
SECT in a row
(or portrait format)
Repeat length of each pair of JA Solar JAM72S10 modules (996 mm wide) is 2021 mm.
