Description Of The Device; Mode Of Operation; System Layout - Kaco blueplanaet 150 TL3 Bedienungsanleitung

3

Description of the device

3.1

Mode of operation

The device converts the DC voltage generated by the PV-modules into AC voltage and feeds this into the power grid. The
starting procedure begins when there is sufficient sunlight and a specific minimum voltage is present in the device. The
feed-in process begins once the PV generator has passed the insulation test and the grid parameters are within the re-
quirements imposed by the grid operator for a specific monitoring time. If, as it gets dark, the voltage drops below the
minimum voltage value, feed-in mode ends and the device switches off.
3.2

System layout

PV generator
String combiner with
DC isolator switch
Fig. 1: Circuit diagram with a short or long supply cable to the inverter
Fig. 2: Circuit diagram from the grid connection point to the inverter
Key
PV generator
String combiner
KACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 110 TL3 KACO blueplanet 125 TL3
KACO blueplanet 137 TL3 KACO blueplanaet 150 TL3
PV generator
RS485
*
Switch box
Grid connection point
Transf.
P
XFMR MV/LV
S
Definition / information on the connection
The PV generator converts the radiant energy of sunlight
into electrical energy.
A string combiner can be coupled to the KACO device so
that the DC lines can be combined.
*) If the supply cable from the PV generator to the device is
long, the string combiner can also be installed in the vicinity
of the PV generator.
An integrated DC isolator switch enables disconnection on
the DC-side.
String combiner with
DC isolator switch
Inverter
with circuit-breaker
AC
Inverter
with circuit-breaker
AC
Equivalent mains
impedance up to 25%
Inverter
with circuit-breaker
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