Chapter 2: Installing the Power Optimizers
SolarEdge Installation Guide – MAN-01-00002-1.7
14
String length must be eight power optimizers or more, or the entire string may shut down. (For
maximum string length, refer to the power optimizer datasheets in
Completely shaded modules may cause their power optimizers to temporarily shut down. This will
not affect the performance of the other power optimizers in the string, as long as eight power
optimizers are connected to unshaded modules. If under typical conditions fewer than eight
optimizers will be connected to unshaded modules, add more optimizers to the string.
Step 1, Mounting and Grounding the Power
Optimizers
1
Use the power optimizer mounting brackets to attach the power optimizer to the racking, as
described below. For optimizers supplied with frame-specific brackets, attach the power optimizer to
the module frame.
2
Determine the power optimizer mounting location..
3
If required, mark all mounting hole locations and drill the holes.
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.
Ne pas percer à travers la optimiseur de puissance ou ses trous de fixation. Les vibrations qui
en résulteraient peuvent endommager la optimiseur de puissance.
4
Attach each power optimizer to the rack using the 5/16'' or 1/4'' screws and washers.
5
Use the following methods to ground the power optimizer:
WARNING:
The metallic enclosure of the power optimizer must have equipment grounding.
L'enceinte metallique de la optimiseur de puissance doit être mise à la terre
For mounting on a grounded rail
: Use the provided 5/16'' stainless steel star washer between the
railing and the flat side of the mounting bracket. The star 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 Grounding Using the Star Washer
