3. Attach each power optimizer to the rack using the M6 (1/4'') stainless steel bolts, nuts and washers.
Apply torque of 9.5 N*m / 7 lb*ft. For 3NA series power optimizes, SolarEdge recommends mounting
the power optimizer on a rail with the smooth side facing out, so that the power optimizer body will
prevent its rotation.
4. Use the following methods to ground the power optimizer
1
:
WARNING!
The metallic enclosure of the power optimizer must be grounded in accordance with the
requirements of the local and national codes.
L'enceinte métallique de l’optimiseur de puissance doit être mise à la terre en accord avec les
régulations locales et nationales.
l
For mounting on a grounded metal rail
: Use the provided 5/16'' stainless steel grounding star
washer between the railing and the flat side of the mounting bracket. The grounding washer
should break through the anodize coating of the railing to ensure low resistive connection. Apply
torque of 9.5 N*m / 7 lb*ft.
Figure 2: Power optimizer installation and grounding using a star washer
l
For mounting on rails with sliding nut fasteners
: If the star washer cannot be used, use the
SolarEdge grounding plate (purchased separately) between the railing and the flat side of the
mounting bracket. Apply torque of 9.5 N*m / 7 lb*ft.
1
For a list of racking models and their appropriate grounding method, refer to
http://www.solaredge.us/files/pdfs/grounding_se_power_optimizers.pdf
.
Chapter 2: Installing the Power Optimizers
SolarEdge
-
StorEdge Installation Guide MAN-01-00262-1.0
13
Figure 3: Power optimizer installation and grounding using a grounding plate
