SMA SC 100 Indoor Installation - Manual (Page 26)

Electrical Connection SMA Solar Technology AG
26 SC-100-IEN093231 Installation Guide
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!
NOTICE!
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.
CAUTION!
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.