Step 4: Verifying Proper Power Optimiser Connection - SolarEdge StorEdge Installation Manual

Three phase inverter with setapp configuration

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Step 4: Verifying Proper Power Optimiser Connection

When a model is connected to a power optimizer, the power optimizer outputs a safe

voltage of 1V (±0.1V). Therefore, the total string voltage should equal 1V times the

number of power optimizers connected in series in the string. For example, if 10 power

optimizers are connected in a string, then 10V should be produced.

Make sure the PVmodels are exposed to sunlight during this process. The power

optimizer will only turn ON if the PV model provides at least 2W.

In SolarEdge systems, due to the introduction of poweroptimizers between the PV

models and the inverter, the short circuit current I

hold different meanings from those in traditional systems.

For more information about the SolarEdge system's string voltage and

current, refer to the V

available on the SolarEdge website at:

https://www.solaredge.com/sites/default/files/isc_and_voc_in_solaredge_

sytems_technical_note.pdf

To verify proper power optimizer connection:

Measure the voltage of each string individually before connecting it to the other strings

or to the inverter. Verify correct polarity by measuring the string polarity with a

voltmeter. Use a voltmeter with at least 0.1V measurement accuracy.

NOTE

Since the inverter is not yet operating, you may measure the string voltage and

verify correct polarity on the DC wires inside the StorEdge Connection Unit.

For troubleshooting power optimizer operation problems, refer to Power Optimiser

Troubleshooting on page 60.

and I

in SolarEdge Systems Technical Note ,

StorEdge Three Phase Inverter Installation Guide MAN-01-00648-1.1

and the open circuit voltage V

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Step 4: Verifying Proper Power Optimiser Connection