SMA SUNNY CENTRAL 900CP XT - AC Disconnection Unit; DC Switchgear

3 Product Overview
SMA Solar Technology AG
User ManualSCCPXT-E7-BA-en-5818
3.3.1.2 AC Disconnection Unit
The AC disconnection unit disconnects the inverter from the MV transformer.
Figure 4: 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.
3.3.1.3 DC Switchgear
The DC switchgear disconnects the inverter from the PV power plant.
Figure 5: Indicators on the DC load-break switch
Position Designation
A Spring status indicator
B Position indicator
C ON button
D OFF button