24
Installation
Guide
DLX series L00410622-01
NOTICE
Safety Equipment:
The system installer is responsible for providing safety
equipment that meets the requirements for both the DC and AC operations to
protect the equipment and prevent personal injury.
2.6. Checks before Start Up
Mounting:
-
Check that the bracket and the inverter are correctly mounted and secured.
PV wiring:
-
Check that the PV cables are rated for the PV current and for the present
environmental conditions.
-
Check that the wiring is performed according to local and national electrical
regulations.
Connection:
-
Check that the PV conductors are correctly torqued to the DC terminals.
-
Check that all connectors and cable glands are correctly tightened and sealed.
DC side:
-
Verify that the PV open-circuit voltage (V
OC
)
does not exceed
600 V
DC
-
Check that
the DC polarity is correct.
AC side:
-
Verify that the AC conductors are correctly connected to the AC terminals.
Grounded conductors:
-
Check that the grounded conductors are properly sized, and
not
fused or switched.
Jumpers:
-
Check that the jumpers for the grounding setup and for the termination resistance
are correctly positioned according to the grounding setup.
Disconnects:
-
Ensure that all current-carrying conductors on both the DC and AC sides have a
switch, and that the switch is located correctly and is readily accessible.
Overcurrent protection:
-
Ensure that the overcurrent protection on both the DC and the AC sides are rated
correctly, and capable of being changed without touching live contacts.
Inverter cover:
-
Ensure that no cables interfere with the sealing of the inverter lower cover, and fasten
the cover firmly to the housing. Recommended tightening torque is 1.0 Nm
CAUTION
Verify that the lower cover is correctly tightened, so that no moisture enters the
housing and damages the electronic components.
