Input Connection To Pv Generator (Dc Side) - ABB REACT 2 Series Product Manual

I
nput connection to PV generator (DC side)
Check for correct polarity in the input strings and absence of any leakage to ground in the PV
generator. When exposed to sunlight, the PV panels supply DC direct voltage to the inverter.
The inside of the inverter may only be accessed after the equipment has been disconnected
from the grid and from the photovoltaic generator.
respect to earth: no pole of the generator must be connected to earth.
To avoid risks of electrical shock, all wiring operations must be carried out with the DC disconnect
switch internal and external (if present, applying LOTO procedures on it) to OFF position and
with the external AC disconnect switch to OFF position (applying LOTO procedures on it).
BATTERY
PV
COMM.
METER
POWER
DC SWITCH
BACKUP
18 19
connector must be respected, which is 18A.
Polarity inversion can cause serious damage. Check polarity before connecting each string!
in parallel mode. An incorrect setting of the input channels can lead to loss of energy production.
Once preliminary checks have been carried out and no problems found with
(parallel or independent) you may connect the inputs to the inverter.
of each string) located on the lower side of the REACT2-UNO are used.
seal of the connectors.
GRID
The number of connections for each input channel is 2 pairs of
connectors.
installed to the connectors, and install any which are missing. This is
necessary both for the inverter grade IP seal, and to avoid damage to
the free connector which may be used at a later time.
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strings required by the system, always checking the
5 - Installation