Make sure to use power optimizers that have the required output conductor
length:
Do not
use extension cables between a module and a power
optimizer, between two modules connected to the same optimizer, or
between two optimizers other than in the cases specified below.
You can use extension cables between power optimizers only from
row to row, around obstacles within a row, and from the end of the
string to the inverter, as long as the maximum distance is not
exceeded.
The minimum and maximum string length guidelines are stated in the power
optimizer datasheets. Refer to the Designer for string length verification. The
Designer is available on the SolarEdge website at
https://www.solaredge.com/products/installer-tools/designer#/.
Completely shaded modules may cause their power optimizers to temporarily
shut down. This will not affect the performance of the other power optimizers
in the string, as long as the minimum number of unshaded power optimizers
connected in a string of modules is met. If under typical conditions fewer than
the minimum optimizers are connected to unshaded modules, add more
optimizers to the string.
To allow for heat dissipation, maintain a 2.5 cm / 1" clearance distance
between the power optimizer and other surfaces, on all sides except the
mounting bracket side.
Figure 3: Power optimizer clearance
When installing modules in a confined space, for example, if installing
Building-integrated photovoltaic (BIPV) modules, ventilation measures may
be needed to ensure the power optimizers are not be exposed to
temperatures outside their specifications.
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.2
16 Installation Guidelines
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