Step 3: Connecting Power Optimizers In Strings; Step 4: Verifying Proper Power Optimizer Connection - SolarEdge SE8000H-AU Installation Manual

Step 3: Connecting Power Optimizers in Strings

You can construct parallel strings of unequal length, that is, the number of power
optimizers in each string does not have to be the same. The minimum and maximum
string lengths are specified in the power optimizer datasheets. Refer to the Designer for
string length verification.
NOTE
Use at least 11 AWG/ 4 mm² DC cables.
l
The total cable length of the string (excluding power optimizers' cables) should not exceed
l
1000ft./300 m from DC+ to DC- of the inverter.
1. Connect the Minus (-) output connector of the string's first power optimizer to the Plus (+) output
connector of the string's second power optimizer.
2. Connect the rest of the power optimizers in the string in the same manner.
WARNING!
If using a dual-input power optimizer and some inputs are not used, seal the unused input
connectors with the supplied pair of seals.
3. If you intend to monitor the installation, using the monitoring platform, record the physical location
of each power optimizer, as described in Providing Installation Information on page 29.
Step 4: Verifying Proper Power Optimizer
Connection
When a module 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 PV modules are exposed to sunlight during this process. The power optimizer will only t urn
ON if t he PV module provides at least 2W.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-250-1.2
Figure 4: Power optimizers connected in series
Chapter 2: Installing the Power Optimizers
17