Delta SOLIVIA 3.0 EU G3 Manuel De Fonctionnement Et D'installation page 13

The solar inverter has an insulation and grounding monitoring on the DC side. The options can be
configured in the Setup menu "S -> Solar ISO / GND" (see § 7.3.8.1).
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 disconnected 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 requirements 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" (EOE 99000115). The
grounding connection is monitored and should be configured in the Setup menu (see above).
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 WIRE SIZE
COUPLER 2.5 MM
2
POLARITY (AWG 14)
Plus •
coupler
•
Minus
coupler
Plus
coupler
Minus
coupler
Plus
coupler
Minus
coupler
Operation and installation manual SOLIVIA 3.0 EU G3
WIRE SIZE WIRE SIZE
4.0 MM 6.0 MM
2 2
(AWG 12) (AWG 10)
•
•
•
•
FEMALE CA- FEMALE CABLE
BLE COUPLER COUPLER
PLUS CODED MINUS CODED
•
•
•
•
•
•
TYCO
ORDER
NUMBER
1394462-1
1394462-2
1394462-3
1394462-4
1394462-5
1394462-6
11