Ac Disconnection Unit; Dc Switchgear - SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual

3 Product Overview

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
A Switch position on
B Central switch position
C Switch position off

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
28 MVPS22JP-SH-en-11
Explanation
The AC disconnection unit is closed.
The AC disconnection unit was tripped and is open.
The AC disconnection unit is open.
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