Installing the Power Optimizers
SolarEdge Installation Guide for Three Phase Inverters
– EU – Version 1.5
21
Connecting Power Optimizers
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To connect these power optimizers to the PV modules:
WARNING!
Verify that you have identified the inputs and outputs correctly. Do not connect PV
modules to power optimizer outputs.
NOTE:
The power optimizer has reverse polarity protection. Even so, you must still verify
the correct polarity by checking the PV module’s polarity with a voltmeter. Some
module manufacturers may use connector polarity that is different from that used by
SolarEdge power optimizer inputs.
The input connectors are shown in the figures above. The output
connectors are in the middle of each side.
The pairs of connectors on the power optimizers are provided sealed.
If you connect less than four modules to a PB250-TFI or PB350-TFI
power optimizer, then you can leave the unused connectors sealed (as
is) instead of plugging them.
The Plus (+) and Minus (-) input connectors on the PB250-TFI and the
PB350-TFI power optimizers are not specifically paired, meaning that
you can connect a PV module to any Plus (+) input connector and
Minus (-) input connector.
