Electrical Connection
SMA
Technologie AG
Page 24
SC-100-13:SE2407
Installation manual
7 Electrical Connection
After the inverter has been installed and mechanically attached, the electrical
connection can be established.
The cables are fed from below through the socket and the base of the cabinet. To do
this, the base plates in the front of the cabinet are to be opened and the cable pulled
into the inside of the cabinet. The corresponding cable screw connections must be
installed in the removable base plates in order to seal the cable routing and to provide
strain relief for the cable. A range of various screw fitting sizes is provided for this
purpose.
7.1 External Connections
7.1.1 AC Grid Power Connections
The AC grid connection is made at the
TN-C, TN-S, TT
grid connection type, which must
be provided by the customer, using a 3-phase system equipped for 400 V.
The connection terminals are located in the front chamber, on the right-hand lower area
of the sidewall.
The device-specific wiring diagram provided must be used for establishing
the connections!
SMA must be notified of the required AC grid connection type during the
project planning phase!
Cable screw connections must be installed in the base plates to provide
strain relief for the AC cables!
The AC cables are connected using cable lugs on M12 bolt clamps.
The grid connection must be installed in a way such that a right-hand
rotary field lies at the input of the cabinet. A left-hand rotary field will
cause the frequency values to be displayed as negative values. The
correct phase sequence must also be followed.
