Installation manual

16 Operation and installation manual SOLIVIA 3.3 AP G3 TR
The solar inverter has an insulation and grounding monitoring on the DC side. The
options can be congured in the Setup menu “S -> Solar ISO / GND” (see „8.3.7.1 Sub-
menu S: Solar ISO / GND“, page 31).
The insulation monitoring has two modes:
● ISO-ON-Error (the solar inverter is disconnected from the grid in the event of an
insulation fault)
● ISO-ON-Warning (the solar inverter indicates the fault but is not disconnected from
the grid).
Deltas solar inverters are factory-set to ISO-ON-Warning mode on delivery.
The grounding monitoring has two modes:
● PV+ grounding (grounding monitoring of the positive pole of the PV generator)
● PV- grounding (grounding monitoring of the negative pole of the PV generator).
In these modes the solar inverter remains in feed-in operation and will not be discon-
nected from the grid in case of a fault. The error message “PV+ grounding fault” or “PV-
grounding fault” will appear on the display.
If you need to connect the positive or negative pole of the PV system to meet require-
ments set out by the module manufacturer, you can do this. Earth continuity must be
implemented close to the inverter. We suggest using Deltas grounding kit “Grounding
Set A Solar” (EOE99000275). The grounding connection is monitored and should be
congured in the Setup menu (see „8.3.7 Submenu S (Setup)“, page 30).
Alternatively, it is possible to turn off the insulation- and grounding monitoring:
● ISO / GND OFF.
Required cable coupler types for DC cable connection to inverter:
CABLE
COUPLER
POLARITY
WIRE SIZE
2.5 MM
2
(AWG 14)
WIRE SIZE
4.0 MM
2
-
6.0 MM²
(AWG 12-10)
FEMALE
CABLE
COUPLER
MALE
CABLE
COUPLER
MULTI-CONTACT
ORDER NUMBER
Plus
coupler
● ●
32.0010P0001-UR
32.0012P0001-UR
Minus
coupler
● ●
32.0011P0001-UR
32.0013P0001-UR
Plus
coupler
● ●
32.0014P0001-UR
32.0016P0001-UR
Minus
coupler
● ●
32.0015P0001-UR
32.0017P0001-UR