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

18 Step 4: Verifying Proper Power Optimiser Connection
3. If you intend to monitor the installation, using the monitoring platform, record the
physical location of each power optimizer, as described in Creating Logical and
Physical Layout using Installation Information on page 50.

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 Connection Unit.
For troubleshooting power optimizer operation problems, refer to Power Optimiser
Troubleshooting on page 67.
StorEdge Single Phase Inverter with HD-Wave Technology MAN-01-00627-1.1
Figure 4: Power optimizers connected in series
and I in SolarEdge Systems Technical Note ,
OC SC
and the open circuit voltage V
SC OC