Verifying Proper Power Optimizer Connection - SolarEdge Power Harvesting System Installation Manual

SolarEdge Installation Guide for Three Phase Inverters – EU – Version 1.5

The power optimizer output cables are labeled + and – .

Connect the Plus (+) connector of the output wire of the first power
optimizer in the string to the Minus (-) connector of the second power
optimizer in the string. Repeat this step for each power optimizer in the
string. This procedure is similar to the standard procedure for
connecting PV modules.
WARNING!
Make sure that the Plus (+) and the Minus (-) connector cables are firmly and
totally inserted.
IMPORTANT NOTE:
Be sure to record power optimizer serial numbers during their installation, as
this information may be required later for troubleshooting.
The SolarEdge Monitoring Portal can be used to access SolarEdge site
information, as described in the Step 4, Reporting and Monitoring Installation
Data section on page 42.
Verifying Proper Power Optimizer
Connection
►
To verify proper power optimizer connection:

Make sure the PV modules are exposed to sunlight during this process.
Otherwise, the power optimizers may not be on.

Verify each string individually before connecting it to the other strings
or to the inverter.

Each power optimizer connected to a PV module initially produces a
safe voltage of 1 V. A string with properly connected power optimizers
should produce 1 V per power optimizer in the string. For example, if
10 power optimizers are connected in a string, then 10 V should be
produced. Use a voltmeter with at least 0.1V measurement accuracy to
verify that the total voltage produced is in accordance with the number
of power optimizers in the string.

If 0 V is measured for the string, check for a disconnection of the
outputs of one of the power optimizers.
Installing the Power Optimizers
23