3 Information and System Description SMA Solar Technology AG
12 FSS-IS-en-42 Installation Manual - Quick Reference Guide
3.3 System Information
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 inverter
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".
The Sunny Home Manager does not support wind power inverters or CHP plants
The Sunny Home Manager only supports PV inverters. If your system combines various AC power sources (e.g., PV
system and small wind turbine system), the Sunny Home Manager can only detect the PV inverters and limit their
power. In the Sunny Home Manager system, no wind power inverters or CHP plants are displayed in Sunny Portal.
Since the data from wind power inverters or CHP plants is not taken into account by the Sunny Home Manager, the
data calculated in Sunny Portal and the displayed diagrams may be inaccurate. However, you have the option of
displaying the wind power inverters via the Sunny Explorer software and configuring them if necessary
(see documentation of Sunny Explorer).
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