Description Of The Device; Mode Of Operation; System Layout - Kaco blueplanet 87.0 TL3 Betriebsanleitung

1 | General information
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 requirements 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
Page 8
Operating Instruction I
PV generator
RS485
*
Grid connection point
P
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.
KACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 105 TL3 KACO blueplanet 110 TL3
KACO blueplanet 125 TL3 KACO blueplanet 137 TL3 KACO blueplanet 150 TL3 KACO blueplanet 155 TL3
String combiner with
DC isolator switch
Switch box
Transf.
XFMR MV/LV
Equivalent mains
impedance up to 25%
Inverter
with circuit-breaker
Inverter
with circuit-breaker
AC
Inverter
with circuit-breaker
AC
KACO blueplanet 165 TL3