Setting The Inverter To Support 208V 3-Wire Grid - SolarEdge SE66.6KUS Installation Manual

5. Close the Connection Unit cover: Attach the switch cover and secure it by tightening the six screws
with a torque of 1.2 N*m / 0.9 ft.*lb.
6. Ensure proper conduit sealing; inspect the entire conduit run and use standard conduit sealants to
avoid water penetration.

Setting the Inverter to Support 208V 3-wire Grid

SolarEdge inverters that support the 208V 3-wire grid a re equipped with two fuse holders and a fuse in
each unit. The position of the fuse configures the AC grid connection: 4- wire or 3-wire grid connection.
By default, the fuse is located in the 4-wire fuse holder of the inverter, and in the 3-wire fuse holder there
is a plastic dummy fuse.
To set the inverter for 3-wire grid connection, you must move the fuse from the 4-wire fuse holder,
marked as Y GRID, to the 3-wire fuse holder, marked as ∆ GRID (see Figure 32).
To set the inverter for 208V 3-wire grid connection:
NOTE
Perform this procedure for all inverter units.
NOTE
Perform this procedure before connecting the inverter to the AC grid.
1. Identify the fuse locations and the markings as described in Figure 32.
2. Remove the dummy fuse from the 3-wire grid fuse holder and set it aside.
3. Move the fuse from the 4-wire grid fuse holder to the 3-wire grid fuse holder.
4. Place the dummy fuse in the 4-wire grid fuse holder.
5. During s ystem setup, set the country to the appropriate 3-wire grid option. U sing the non-3-wire
setting may result in incorrect system operation.
CAUTION!
If the fuse was moved to support one of the grid types, do not connect the inverter to the other grid type
without switching the fuse back to the correct holder. Connecting the inverter to grids when the fuse is
incorrectly located may damage the inverter and void the warranty.
Si le fusible a été déplacé pour supporter l'un des types de réseau, ne branchez pas l'onduleur sur l'autre
type de réseau avant de remettre le fusible dans son bon support. Brancher l'onduleur au réseau quand
le fusible est mal placé, peut endommager l'onduleur et annuler la garantie.
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4
Chapter 4: Connecting the AC and DC Strings to the Connection Unit
Figure 32: Fuse locations and markings
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