Installation and Operating Guide
AUS240729 13
To determine the maximum possible number of modules per string, the open-circuit voltage at the
lowest temperature must be considered:
The specified protection classes are to observed, however, the minimum compliance required is
IP65. Ensure a gapless connection when connecting the plug-in connectors.
For a series connection, only modules with the same current rating should be used, and for a parallel
connection, only modules with the same voltage rating should be used. Modules can be connected
in series by connecting the positive connection of one module to the negative connection of the next
module.
Suitable overcurrent protection measures (e.g. string cut-out) are required for the parallel connection
of the modules. It must be ensured that the specified capacity regarding the return current IR of the
datasheet will not be exceeded. If there are more than two parallel strings, string fuses and string
diodes must be used.
Only use special solar cables and suitable plugs. Attach the cables to the mounting system using
UV-resistant cable ties and avoid exposing the cables to direct sunlight.
In order to reduce voltages caused by lightning strikes, the surface area of all conductor loops must
be as small as possible. Modules shall be installed in such a way that sufficient air circulation will be
possible to prevent an overheating of the modules and components.
IR, of 16 A for: AC-xxxM/60S: xxx = 310 – 325; AC-xxxMH/120S: xxx = 310 – 335 AC-xxxM/72S: xxx = 370 –
390; AC-xxxMH/144S: xxx = 370 – 405
IR, of 20 A for: AC-xxxMH/120VAU: xxx 360 – 385; AC-xxxMH/144VAU: xxx = 440 – 465
IR, of 25 A for: AC-xxxMH/108VAU: xxx 400 – 415; AC-xxxMH/144VAU: xxx = 530 – 555;
AC-xxxMH/108VAU: xxx 400 – 415
IR, of 30 A for: AC-xxxTGB/108BBA: xxx = 430; 440; AC-xxxTGB/108WBA: xxx = 430 – 440;
AC-xxxTGB/120BBA: xxx = 470; AC-xxxTGB/120WBA: xxx = 470;
AC-xxxTGB/144TSA: xxx = 565 – 580; AC-xxxTGBL/108WBA: xxx = 440 - 450;
AC-xxxTGBL/108BBA: xxx = 440 – 450; AC-xxxTGB/120TSA: xxx = 550;
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