3.13.1.2 AC Disconnection Unit
The AC disconnection unit disconnects the inverter from the MV transformer.
Figure 14: Switch positions of the AC disconnection unit from ABB
Position Designation Explanation
A
Switch position on
The AC disconnection unit is closed.
B Central switch position The AC disconnection unit was tripped and is open.
C
Switch position off
The AC disconnection unit is open.
3.13.1.3 DC Switchgear
The DC switchgear disconnects the inverter from the PV power plant.
Figure 15: Indicators on the DC load-break switch
Position Designation
A Spring status indicator
B Position indicator
3 Product Overview
SMA Solar Technology AG
System ManualMVPS22JP-SH-en-1128
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