Mounting the Auto-transformer
1. Determine the mounting location, on a wall, stud framing or pole. To allow proper heat dissipation
and cable entry, maintain the following minimum clearance areas between the auto-transformer and
other objects:
l
8 in / 200 mm to the top and bottom of the auto-transformer; if conduit entry to the auto-
transformer will be from the bottom, leave sufficient clearance for the conduits as well.
l
4 in / 100 mm to the right and left of the auto-transformer.
2. Install the bracket with the flat side facing down. Verify that the bracket is firmly attached to the
mounting surface.
3. Hang the auto-transformer on the bracket: Lift the auto-transformer from the sides, or hold it at the
top and bottom to lift the unit into place.
4. Insert the two supplied screws through the outer heat sink fin on both sides of the auto-transformer
and into the bracket. Tighten the screws with a torque of 4.0 N*m / 2.9 lb.*ft.
Figure 14: Installing the auto-transformer
Installing the Backed-up Loads Panel
Install a secondary AC panel for backed-up loads (not supplied by SolarEdge). Rewire the backed-up loads
through this panel.
Install two poles 25A main circuit breaker with integrated AFCI on this panel, to ensure the 25A phase
imbalance limit is maintained at all times.
Figure 15: Backed-up Loads Panel
Chapter 4: Auto-transformer and Backed-up Loads Panel Installation (for Backup Only)
SolarEdge
-
StorEdge Installation Guide MAN-01-00262-1.0
25
