5.7 Start-up
34
no. 30b-d). All doors and covers of the cabinets are connected with grounding wires to the cabinet.
After the initial installation and if covers have been removed for future maintenance, ensure that they
are properly grounded again.
Start-up
Special Safety Instructions for Initial Commissioning
N O T I C E
Initial commissioning must be carried out by a Heinzinger technician or by an authorized company!
Start-up After Storage
If the device has been stored for more than a year prior to commissioning, a special switch-on proce-
dure must be carried out in order to reform the intermediate circuit capacitors and to protect them
from damage. This switch-on procedure must be carried out by the manufacturer.
PEN Connection
Below the main switch are the connection terminals for neutral and protec-
tive earth. It is possible to make the connection via a common PEN conduc-
tor.
For this purpose, a bridge (minimum cross section 6
mm
²
) must be placed
between the N terminal and the PE terminals. However, this requires that
no other division of PEN has been made in the sub-distribution before the
ERS system.
If this is the case, a separate N conductor (6
mm
²
) must be laid to the ERS
system. In both cases use at least 120
mm
²
(for 160
kW systems) for the PE
conductor.
Mains Connection
All connection work must be carried out before the initial start-up taking into account the EMC prin-
ciples and the local energy provider’s conditions of service.
The phase sequence is not arbitrary; the three-phase connection may only be made in a clockwise
rotating field (check with a rotating field meter). The minimum cable cross-section of the connection
cable depends on the pre-fuse used. The fuse on the building side must be larger than the fuse inside
the device. The dimensioning of the device fuse can be found in
section 3.1, p 9
.
Fig. 28 PE/N-
terminal