SMA SI 3.0-11 Quick Reference Guide V.3.0 - Manual (Page 50)

7 Commissioning SMA Solar Technology AG
50 Ersatzstrom-IS-en-30 Installation - Quick Reference Guide
7.6 Activating Phase Coupling in Single-Phase Battery Backup Systems
With phase coupling it is possible, in the event of utility grid failure, to supply loads which are not connected to the line
conductor of the Sunny Island inverter (see Section 3.4.4 "Phase Coupling for Single-Phase Battery Backup Systems",
page 19). As soon as the utility grid returns, the contactor disconnects the coupled line conductors again. The switchover
times for the loads to the coupled line conductors are longer than to the line conductor of the Sunny Island. The switchover
times are a matter of seconds.
Disconnection of the Sunny Island inverter as a result of overload:
The Sunny Island switches itself off when overloaded. Only activate phase coupling for line conductors whose loads do
not exceed the maximum AC power of the Sunny Island inverter (for technical data, see the Sunny Island inverter
installation manual).
Procedure:
• In the automatic transfer switch, switch on circuit breaker F3 or F4 or both.
7.7 Commissioning System With Increased Self-Consumption
7.7.1 Preparing BLUETOOTH Communication
To allow SMA BLUETOOTH devices in the battery backup system to communicate with each other, all devices must be
set to the same NetID. The NetID is used to distinguish between systems with SMA BLUETOOTH operating in close
proximity to one another.
Procedure:
1. For PV inverters with integrated BLUETOOTH interface that communicate via Speedwire, set NetID 0 (see PV inverter
installation manual). This deactivates communication via BLUETOOTH.
2. Determine the NetID of the BLUETOOTH system.
• Install Sunny Explorer on a computer. Either run the installation file on the CD provided or download free of
charge at www.SMA-Solar.com.
• Determine a free NetID for the BLUETOOTH system using Sunny Explorer (see Sunny Explorer user manual).
• Quit Sunny Explorer. This will ensure that the BLUETOOTH network is set up via the Sunny Home Manager.
3. Set the determined NetID on the Sunny Home Manager and on all
devices with active BLUETOOTH interface (see documentation of
the BLUETOOTH devices). Note that the NetID must not be set to 1
if the Sunny Home Manager is intended to communicate with more
than one BLUETOOTH node.
/05*$&
Damage to three-phase loads during phase coupling
If three-phase loads are connected to a single-phase utility grid during phase coupling, SMA Solar Technology AG
cannot rule out damage to the three-phase loads.
• Ensure that, during phase coupling, only single-phase loads are connected to the battery backup grid.