ZAPTEC Pro Installationshandbuch Seite 11

5
Connect the cables
Connect the cables in the junction box in accordance with
the electrical system at the location. See the illustration
below. The terminal blocks must be tightened to a torque of
5 Nm.
If you install the system on a three-phase IT network,
we recommend that four-core cable be used in case a
Electrical connection
There are four possible connection variants, depending on whether three-phase or single-phase is used, and whether a TN
network, TT network or IT network is used, as shown under or on the label on the back plate.
L1 L2 L3 N PE L1 N PE
L1 L2 L3 N PE L1 L2 L3 N PE
L1 L2 L3 N PE L1 L2 L3 N PE
TN three-phase TN single-phase
TN 3-fase TN 1-fase
6
Test the connections
Test the connections in accordance with your chosen
configuration.
transformer is installed in order to provide better protection
in the future. This will mean that the neutral connection can
be made in the fuse box rather than on each individual
charging point, which will make it easier to carry out future
upgrades.
L1 L2 L3 PE L1 L3 PE
L1 L2 L3 N PE L1 L2 L3 N PE
L1 L2 L3 N PE L1 L2 L3 N PE
IT three-phase IT single-phase
IT 3-fase IT 1-fase
23 0 V 23 0 V
You must not mix up the phases on the charging
stations in the installation. If the phases do become
i
mixed up, the phase balancing will not work and the
fuses may trip.
EN
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