ABB UNO-DM-4.0-TL-PLUS-Q - Page 142

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001004AG
8 - Maintenance
The below picture represents the expected status of the switches in the
plant after the switching operations have been completed.
PV Strings
External DC
Switch
INVERTER 1
(Unit under service)
OPEN+LOTO
External LV
AC Switch
External Main LV
AC Switch
MW Switch
LV/MW
Transformer
OPEN+LOTO
OPEN
+
LOTO
PV Strings
External DC
Switch
INVERTER 2
External LV
AC Switch
LV Distriubution
Panel
Internal DC
Switch
Internal DC
Switch