ABB PVI-3.0-TL-OUTD-S-US Product Manual page 20

DC electrical schematics for front switchbox, AFD available on –A models only
+IN1
-IN1
DC IN
+IN2
-IN2
1
GRID 2
3
GND
WARNING! The DC disconnect switch disconnects the DC PV panel current from
the photovoltaic panels when the switch is in "OFF" position. The inverter will stop
producing power, but it DOES NOT disconnect the AC from the grid.
To disconnect the inverter from the AC grid, an AC switch (not included in the
switchbox) must be disconnected. It is the responsibility of the installer to provide
external disconnect switches and Overcurrent Protection Devices (OCPD) as re-
quired by National Electric Codes and other prevailing regulations.
To access the wiring terminals in the inverter and switchbox, the inverter cover and switchbox
cover must be removed.
• To remove the front cover of the inverter compartment, loosen the four captive screws
indicated using the Torx screwdriver provided.
• To remove the front cover of the switchbox, loosen the four captive screws indicated
using the Torx screwdriver provided in the box with the inverter.
• When connection operations are complete and the unit is connected, replace the covers
and tighten the cover screws with at least 1.5Nm (13.2 in-lbs) torque to maintain proper
waterproof sealing.
DC SWITCH
BOX
AFD
- 20 -
3 - Mounting and wiring
INVERTER
+IN1
-IN1
+IN2
-IN2
1
GRID
2
3