Salicru EQUINOX EQX2 10002-SX, Руководство пользователя, Страница: 54 / 80

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d. Insert the DC cable through the DC connector nut on the
metal terminal and press the terminal with professional
crimping pliers (pull the cable to check if the terminal is
well connected to the cable), as shown in Fig. 18:
To ensure an optimal connection,
use an approved tool to crimp
the terminals.
Fig. 18. Crimping the cable.
e. Insert the positive and negative cables into the corre-
sponding positive and negative connectors, pull the DC
cable to make sure that the terminal is well connected
to the connector.
f. Use an open-end wrench to screw the nut all the way in
and make sure that the terminal is sealed well, as shown
in Fig. 19:
Use the special wrenches for
MC4 connectors to ensure
that the correct tightening
torque is applied, without
damaging the connectors.
Fig. 19. Using an open-end wrench.
Warning
Before assembling the DC connector, make sure that the
cable has the correct polarity.
Warning
Use a multimeter to measure the DC input string
voltage, check the polarity of the DC input cable,
and make sure that the voltage of each string is
within the 600 V range.
See the "Input" section in Tab. 15.
3.
Connect the cables to the inverter as shown in the following
connection diagrams:
a.
Connection for installations with a single
solar field (panels in the same direction and
strings of equal length):
Solar field
1 MPPT
EQUINOX_2
Port 1
Port 2
USB / WiFi
MPPT A
FUS
JUNCTION
BOX
SPD
Fig. 20. Single solar field connection, 1 string and 1 MPPT.
Solar field
2 MPPTs
EQUINOX_2
Port 1
Port 2
USB / WiFi
MPPT A MPPT B
FUS
JUNCTION
BOX
SPD
Fig. 21. Single solar field connection, 2 strings and
2 MPPTs.
Fig. 22 shows the connection layout for customers
who have purchased an inverter with two MPPT
inputs and only a single string is available ; this type of
connection is not recommended, but it can be used (the in-
verter should be replaced with a different model with
a single MPPT).