Step 1: Mounting And Grounding The Power Optimizers - SolarEdge SE66.6KUS Installation Manual

Step 1: Mounting and Grounding the Power Optimizers

Do not use extension cables between a module and a power optimiser, between two modules
o
connected to the same optimiser, or between two optimisers other than in the cases specified
below.
You can use extension cables between power optimisers only from row to row, around obstacles
o
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 optimiser datasheets.
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Refer to the D esigner for string length verification. The D esigner is available on the SolarEdge website
at https://www.solaredge.com/us/products/installer-tools/designer#/.
Completely shaded modules may cause their power optimisers to temporarily shut down. This will
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not affect the performance of the other power optimisers in the string, as long as the minimum
number of unshaded power optimisers connected in a string of modules is met. If under typical
conditions fewer than the minimum optimisers are connected to unshaded modules, add more
optimisers to the string.
Equipment grounding tightening torques: 4-6 AWG: 45 lb-in, 8 AWG: 4 0 lb-in, 10-14 AWG: 35 lb-in.
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T o allow for heat dissipation, maintain a 2.5 cm / 1" clearance distance between the power optimiser
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and other surfaces, on all sides except the mounting bracket side.
When installing modules in a confined space, for example, if installing Building-integrated photovoltaic
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(BIPV) modules, ventilation measures may be needed to ensure the power optimisers are not be
exposed to temperatures outside their specifications.
NOTE
The images contained herein are for illustrative purposes only and may vary depending on product
models.
Step 1: Mounting and Grounding the Power
Optimizers
For each of the power optimisers
1 Not applicable to smart modules.
16
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4
Figure 4: Power optimiser clearance
1
: