ABB PVI-3.0-TL-OUTD-S-US, Product Manual

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3007CC3
3 - Mounting and wiring
D
C array connections
WARNING! The DC disconnect switch disconnects ONLY the DC current from the photovoltaic
panels when the switch is open in the OFF position. It DOES NOT disconnect the AC connection to
the grid. To disconnect the inverter from the AC grid, an external, customer supplied AC switch must
be used.
• To prevent electrocution hazards, all the connection operations must be carried out with the DC
disconnect switch turned to the OFF position and locked out.
• When connecting the DC conductors verify polarity prior to terminating. Failure to perform these
checks may cause arcing and potential fire.
• The array equipment grounding must be installed per the requirements of the NEC and is the
responsibility of the installer.
Connect array to String 1 and String 2 input positions shown below, running separate wires for POS and NEG
for each array. The inverter can be configured with an independent MPPT (maximum power point tracking) for
each DC input channel or with the two input DC channels connected in parallel (operating with one MPPT) as
described on the following pages.
String
2
String
1
String
1
String
2