Kaco blueplanet 100 NX3 - System Layout

3.3 System layout
Inverter
with circuit-breaker
Inverter
with circuit-breaker
AC
AC
PV generator
PV generator
Daisy-chain operation
Fig.6: Circuit diagram with a short or long supply cable to the inverter
Grid connection point
P
Transf.
Inverter
with circuit-breaker
S
XFMR MV/LV
PE
PE
P
S
Fig.7: Circuit diagram from the grid connection point to the inverter
Key Definition / information on the connection
PV generator The PV generator converts the radiant energy of sunlight
into electrical energy.
Transformer
NOTE:The grounding takes place in the star point that is
fed out. (Dy5) – More information under Downloads - Ap-
plication note "Grid Type and impedance requirements …"
All three phases need to be set up on the medium-voltage
transformer or medium-voltage/high-voltage transformer.
In this case, the total impedance of the transformer stations
must be below 25%.
Grid connection point The clean PV-current is made available at the grid connec-
tion point.
DC isolator switch Use the DC isolator switch to disconnect the device from
the PV generator.
Manual Description of the device | 3
KACO blueplanet 100 NX3 KACO blueplanet 125 NX3 Page
11
EN