•
CTa, CTb, CTc
(measures the current exchanged with the grid).
a) Position the
CTa
sensor on the same phase where the storage inverter is installed.
b) Position the
CTb
and
CTc
sensors on the other two phases.
c) Each sensor must be positioned at the output of the import/export meter so that all the
incoming and outgoing power flows can be read.
Same phase
Correctly position the current sensors (CT):
Note:
The direction of the CTpv is independent of the
installation.
•
CTpv
(measures the photovoltaic production).
It must be positioned on the phase cable coming out from
the photovoltaic inverter (AC side) on the same phase
where the storage was installed.
Unscrew the 4 screws (A) with a screwdriver.
Remove the cover (B), loosen the cable gland (C), and then remove
the stopper (G).
Route the CT cables through the cable glands on the right side of the
cover, connect the positive and negative cables to the counterpart
contained in the inverter kit, then insert the counterpart into the
corresponding ports on the inverter board.
For the extension cable, it is recommended to use a category five 8-pole mains
cable, or a 2x0.5 mm² cable. In the first case, four conductors will be connected to
one pole of the sensor and the other four will be connected to the other pole.
To prevent the conductor wires from breaking, it is recommended to use a cable
with flexible and non-rigid conductors.
Replace the cover and secure it with the four screws; then
tighten the cable glands.
INSTALLATION OF
THREE-PHASE SYSTEM
12. CURRENT SENSOR CONNECTION
Содержание Azzurro 3000SP
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