Installation Guide

Table Of Contents
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 Safety Switch.
For troubleshooting power optimizer operation problems, refer to
Power Optimizer
Troubleshooting
on page 98.
-Three Phase System Installation Guide MAN-01-00002-4.3
30 Step 4: Verifying Proper Power Optimizer Connection