3 Installation
16
3.2 Electrical installation
Solar generator connection
Extreme danger from electric shock!
· Touching live parts can result in death.
· All electrical work must be conducted by a quali-
fied electrician while observing the VDE regula-
tions, national and other regulations!
· Execute the direct current wiring in accordance
with the system dimensioning of your planning
expert.
· Prepare all solar generator cables before you
carry out the connection of the solar generator
to the Solar Inverter.
· Check each solar generator string for proper
operation with an open-circuit voltage and
short-circuit current measurement.
· Check using the rating plate on the Solar Inverter
whether it is approved for the maximum solar
generator voltage.
· The positive and negative lines must be kept
electrically separate from the earth potential.
· Touchable, live parts of the solar generator (e.g.
metal frame, carrying structure, etc.) must be
earthed (connection with PE).
· Check the solar generator against short-circuits
to earth.
· Before connecting the solar generator to the
Solar Inverter, the integrated DC load break
switch must be opened quickly (position 0).
· After the PV solar generator is connected to
the Solar Inverter and the DC load break switch
is switched on, the direct generator voltage is
present internally.
· The connectors may not be separated while
under load.
· Always separate the grid connection first by
switching off the corresponding mains fuse and
then the solar generator side by quickly opening
the DC load break switch.
Survey
The solar generator can be directly connected to the
Solar Inverter with two strings. The connection is
made via the shockproof Tyco Solarlok plug-in con-
nection system accessible from outside.
The Solar Inverter has two electrically connected
DC inputs, which are arranged in pairs on the
underside.
· The solar generator strings must be identically
dimensioned and comply with the specifications
of the Solar Inverter.
· No external DC load break switch is required. A
DC load break switch as required in accordance
with DIN VDE 0100-712 is integrated in the Solar
Inverter.
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1
2
3
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1 Connection of solar generator string 1
2 Connection of solar generator string 2
3 DC load break switch