SMA SI 3.0-11 Quick Reference Guide V.4.0 - Manual (Page 11)

SMA Solar Technology AG 3 Information and System Description
Installation Manual - Quick Reference Guide FSS-IS-en-40 11
3.2 System Information
Example 4:
All PV inverters are three-phase and are feeding in symmetrically
(Sunny Tripower).
The Sunny Island can be connected to any line conductor.
Example 5:
The PV system consists of three-phase PV inverters (Sunny Tripower)
and single-phase PV inverters (Sunny Boy). The PV system is feeding
in asymmetrically.
The Sunny Island must be connected to a line conductor into which
a single-phase PV inverter is feeding.
The PV system is not ideal for the SMA Flexible Storage System.
The Sunny Island can only discharge the battery if less than 4.6 kVA
are being fed in on the line conductor of the Sunny Island at the
point of interconnection.
Recommendations for battery capacity
SMA Solar Technology AG recommends the following minimum battery capacities. The battery capacities apply for
a ten-hour electric discharge (C10).
• System with one Sunny Island: 100 Ah
• System with three Sunny Island inverters: 300 Ah
Connecting the Sunny Island
At terminal AC2, there are two terminals N and N
TT
for the connection of the neutral conductor.
• Always connect the neutral conductor to the N
TT
terminal at the terminal AC2 in systems for increased
self-consumption. This ensures that the Sunny Island disconnects at all poles.
Device Types within a Cluster
All Sunny Island inverters must be of the same device type.
Requirements for The Router and Network Switches for Speedwire Devices
• All Speedwire devices must be connected to the same router.
• The router and optionally one or more network switches must fully support Multicast.
• The router must support "Internet Enabled Devices" with the interfaces SIP and STUN.
The most common routers and network switches support Multicast and "Internet Enabled Devices".