SMA AUTOMATIC SWITCH BOX XL - Manual (Page 29)

SMA Solar Technology AG Electrical Connection
Installation Guide AS-BOX-XL-IEN094410 29
5.4.3 Connecting the Feed-in Meter
Cable protection
For purposes of fuse protection and isolation, install a line circuit breaker between the
Automatic Switch Box and the feed-in meter. Be sure to observe all standards and
guidelines applicable to the installation 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 the utility operator.
PV systems without a feed-in meter
The Sunny Backup-System can also be used in PV systems without a feed-in meter. If you
do not connect a feed-in meter to the Automatic Switch Box, you must bridge the feed-in
meter (=AS-X5 PV Meter) and the consumption meter (=AS-X1 Load Meter) outside the
Automatic Switch Box.