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

SMA Solar Technology AG 2 Safety
Installation - Quick Reference Guide Ersatzstrom-IS-en-30 11
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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.
Damage to the tie switch due to incorrect design
If the ampacity of the tie switch is not sufficient, the tie switch becomes overloaded and is damaged.
• Adjust the ampacity of the tie switch in accordance with the requirements on site. The tie switch must be designed
for at least the operating range of the upstream fuse or the maximum short-circuit current of the PV system.
Damage to the battery due to incorrect settings
Incorrect settings can lead to premature aging of the battery. Settings of the parameters in the menu 220# Battery
influence the charging behavior of the Sunny Island inverter.
• Ensure that the values recommended by the battery manufacturer are set for the battery (for the battery technical
data, see the documentation of the battery manufacturer).
Destruction of devices due to electrostatic discharge (ESD)
If enclosure parts are removed, the devices (e.g., Sunny Island or PV inverter) can be damaged or destroyed if
electronic components or connections are touched.
• Do not touch any electronic components in open devices.
• Ground yourself before touching any connections.