31
EN-US
Monitoring the
Grid
Systems with
more than one in-
verter
For larger photovoltaic systems, it is possible to connect several inverters in parallel with-
out any problems.
240 V Delta : 120 V Stinger 240 V Delta
208 V Delta Jumper positions:
120 V 120 V
240 V
240 V
240 V
(1)
(2)
(2)
240 V
240 V
240 V
(2)
(2)
(2)
208 V
208 V
208 V
(2)
(2)
(2)
(1)
(2)
IMPORTANT! The resistance in the leads to the AC-side connection terminals must be as
low as possible for optimal functioning of grid monitoring.
NOTE! The inverters Fronius IG 2500-LV and Fronius IG 4500-LV are designed
to be connected to three-phase systems. Utilities generally allow up to 6 kVA of
unbalance, but check with your utility and try to balance the installation. Try to bal-
ance the installation.
The connection to the grid should be done in the following way:
- Connect Fronius IG No. 1, No. 4, No. 7, ... to L1 and L2
- Connect Fronius IG No. 2, No. 5, No. 8, ... to L2 and L3
- Connect Fronius IG No. 3, No. 6, No. 9, ... to L1 and L3
To Next Page
Loading...
Need help?
General