Step 2: Connecting A Pv Module To A Power Optimizer; Step 3: Connecting Power Optimizers In Strings - SolarEdge SE50K Installation Manual

2. If required, mark the mounting hole locations and drill the hole.
CAUTION!
Do not drill through the power optimizer or through the mounting holes. The drilling vibrations can
damage the power optimizer and will void the warranty.
3. Attach each power optimizer to the rack using M6 (1/4'') stainless steel bolts, nuts and washers or
other appropriate mounting hardware. A pply torque of 9.5 N*m / 7 lb*ft.
4. Verify that each power optimizer is securely attached to the module support structure.
5. Record power optimizer serial numbers and locations, as described in Reporting and Monitoring
Installation Data on page 44
Step 2: Connecting a PV Module to a Power
Optimizer
NOTE
Images are for illustration purposes only. Refer to the label on the product to identify the plus and
minus input and output connectors.
For each of the power optimizers:
Connect the Plus (+) output connector of the module to the Plus (+) input connector of the power
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optimizer.
Connect the Minus (-) output connector of the module to the Minus (-) input connector of the
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power optimizer.

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 SolarEdge Site Designer for string length verification.
NOTE
Use at least 11 AWG/ 4 mm² DC cables.
l
The total conductor length of the string (excluding power optimizers' conductors; including home
l
runs and necessary extensions between optimizers) should not exceed:
2300 ft./ 700 m from DC+ to DC- of the inverter
o
Extended Power Commercial Inverter Installation Guide MAN-01-00402-1.0
Figure 4: Power optimizer connectors
Chapter 2: Installing the Power Optimizers
15