Connecting External Sources SMA Solar Technology AG
108 SI5048-TB-TEN110340 Technical Description
14.1.1 Connecting in Parallel
In the case of Sunny Islands connected in parallel which operate on the same phase and in the same
cluster, the internal transfer relay is activated simultaneously. It is thus possible to multiply the
generator current and therefore to connect a larger generator or a higher grid current.
The maximum current in the system is limited to 150 A:
14.1.2 Generator Start Options
The Sunny Island supports the following options for starting the generator which can be set in standby
mode with the "234.07 GnStrMod" parameter:
•Manual
•Autostart
•GenMan
Maximum number of Sunny Island Maximum current
1 Sunny Island 56 A
2 Sunny Island 112 A
3 Sunny Island 150 A
Cable lengths and cross-sections
Use the same cable lengths and cable cross-sections when installing the Sunny Island with
the generator.
Automatically resetting the parameter "234.07 GnStrMod" to "Auto".
If the Sunny Island switches into "Standby" mode or an error occurs, the parameter
"234.07 GnStrMod" is automatically switched to "Auto".