P400 Installation

Setting the Inverter for 208V Delta Grid Support
SolarEdgeinvertersthatsupportthe208VDeltagridareequippedwithtwofuseholdersand
afuse.ThepositionofthefuseconfigurestheACgridconnection:WYE(4-wire)orDelta(3-
wire)gridconnection.Bydefault,thefuseislocatedintheWYEfuseholderoftheinverter,
andintheDeltafuseholderthereisaplasticdummyfuse.
TosettheinverterforDeltagridconnection,youmustmovethefusefromtheWYEfuse
holder,markedasYGRID,totheDeltafuseholder,markedas∆GRID(seeFigure 25).
CAUTION!
The only supported Delta grid is the 208V L-L grid. Connecting the inverter to other Delta
grids may damage the inverter and will void the warranty.
To set the inverter for 208V Delta grid connection:
NOTE
Perform this procedure before connecting the inverter Safety Switch to the AC grid.
1. Removetheinvertercover:Opentheinvertercover’ssixAllenscrewsandcarefullypull
thecoverhorizontallybeforeloweringit.
2. IdentifythefuselocationsandthemarkingsasdescribedinFigure 25
Figure 25: Fuse locations and markings
3. RemovethedummyfusefromtheDeltagridfuseholderandsetitaside.
4. MovethefusefromtheWYEgridfuseholdertotheDeltagridfuseholder.
5. PlacethedummyfuseintheWYEgridfuseholder.
Chapter 4: Connecting the AC and the Strings to the Safety Switch
SolarEdge-Installation Guide MAN-01-00002-4.0
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