Kaco blueplanet 125 TL3 Operating Instruction

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
Inverter
with circuit-breaker
String combiner with
DC isolator switch
*
Switch box
Inverter
with circuit-breaker
AC
AC
String combiner with
DC isolator switch
RS485
PV generator
PV generator
Fig.1: 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
Equivalent mains
impedance up to 25%
Fig.2: 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.
String combiner 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.
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
Page 9
EN

Kaco blueplanet 125 TL3 Specifications

General

Brand	Kaco
Model	blueplanet 125 TL3
Category	Inverter
Language	English