SMA AUTOMATIC SWITCH BOX M - Manual (Page 21)

SMA Solar Technology AG Electrical Connection
Installation Guide AS-BoxM-IEN091711 21
5.4 Connecting the Feed-in Meter
Cable Protection
For safety and disconnection, a line circuit breaker must be installed between Automatic
Switch Box and feed-in meter. Be sure to observe all standards applicable to the installation
and site.
Connection requirements
The Sunny Backup system is only certified for TN grids and may not be installed in TT grids.
Comply with all connection regulations of your utility operator.
PV systems without feed-in meter
The Sunny Backup system can also be used in PV systems without feed-in meter. If you do
not connect a feed-in meter to the Automatic Switch Box, you must bridge the feed-in
counter (X5/PV Meter) and the consumption meter (X1/Load Meter) outside of the
Automatic Switch Box.