KACO Powador XP200-HV TL - Manual (Page 20)

Installation
Page 20 Operating Instructions Powador XP200-HV TL, XP250-HV TL, XP350-HV TL_EN
Electrician
Grounding the inverter
" Determine the lay-out of the permanent wiring.
" Secure the protective earth cables:
– Max. cross-section: according to regulations
– Connection bolt: M10
– Tightening torque: 25 ... 30 Nm
" Do not use plug connections.
" Check whether all connected cables are securely attached and protected from mechanical forces.
7.3 Connecting to the external transformer (grid connection)
The inverter is connected to the power grid via an external transformer using a 3-phase connection. The connection
for the power grid is located at the bottom of the right cabinet.
7.3.1 Selecting the external transformer
With an appropriate transformer, the inverters of the XP-HV TL series can be connected both to the low voltage grid
and the medium voltage grid.
" Choose the appropriate transformer voltage level depending on the grid connection of the PV plant (low vol-
tage or medium voltage)
NOTE
The XP-HV TL inverters may not operate properly if an inappropriate transformer is used. Especially
on the medium voltage level, the inverters require special transformers.
› Use only transformers that are manufactured according to the specification of KACO.
" When choosing the transformer for the medium voltage level check the transformer specification available on
the KACO-website.
" In case of questions regarding the specification please contact KACO for assistance.
NOTE
The inverters can be operated with more than one inverter on a single transformer (e.g. 3 XP350-
HV TL operating as a Megawatt station).
› Do not connect the inverters in parallel on one coil.
› Refer to the transformer specification for details.
7.3.2 Grid type
NOTE
Only an IT grid is suitable for the XP-HV TL inverters.
› Connect only an IT grid to the inverter.
› Do not ground the grid between the inverter and the medium voltage transformer.