Step 3: Connecting Power Optimizers In Strings - SolarEdge Se K Series Installation Manual

Connect the Plus (+) output connector of the module to the Plus (+) input
connector of the Power Optimizer.
Connect the Minus (-) output connector of the module to the Minus (-) input
connector of the Power Optimizer.

Step 3: Connecting Power Optimizers in Strings

You can construct parallel strings of unequal length, that is, the number of Power
Optimizers in each string does not have to be the same. The minimum and maximum
string lengths are specified in the power datasheets. Refer to the SolarEdge Site
Designer for string length verification.
NOTE
The DC bus of each unit is separate and not shared for all units. Therefore, in
addition to following the inverter design rules, each unit should follow the
unit design rules as detailed in the Technical Specifications.
1. Connect the Minus (-) output connector of the string's first Power Optimizer to the
Plus (+) output connector of the string's second Power Optimizer.
2. To minimize electromagnetic interference (EMI), make sure to minimize the distance
between the positive and negative DC cables.
For detailed instructions, see:
https://www.solaredge.com/sites/default/files/se-emi-
performance-application-note.pdf.
3. Connect the rest of the Power Optimizers in the string in the same manner.
Three Phase Inverter with Synergy Technology P/N: SExxK-xxxxIxxxx SExxK-xxxxIxxxx
Chapter 2: Installing the Power Optimizers
Figure 4: Power Optimizer connectors
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