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000972AG
8 - Maintenance
6.
Operations on internal AC disconnect Switch
09
(if present)
This operation can be done only in case of wiring box
02
SX2/SY2 model.
The wiring box
02
SX/SY model doesn’t include the AC switch
09
.
•
Open the main AC disconnect switch
09
(shown in blue in the picture
below).
PV Strings
Internal DC
Switches
Internal AC
Switch
(if present)
Power
Module
Wiring
Box
OPEN+LOTO
PV Strings
External DC
Switch
(if present)
Internal DC
Switches
Internal AC
Switch
(if present)
External LV
AC Switch
External Main LV
AC Switch
External LV
AC Switch
LV Distriubution
Panel
MW Switch
PV Strings
Internal DC
Switches
Internal AC
Switch
(if present)
External LV
AC Switch
LV/MW
Transformer
Power
Module
Wiring
Box
Power
Module
Wiring
Box
External DC
Switch
(if present)
OPEN+LOTO
External DC
Switch
(If present)
OPEN
+
LOTO
Unit under service
Inverter 2
Inverter 3
Inverter 1
•
Affix padlocks to prevent operation onto AC disconnect switch
09
.
Affix designated tags (LOTO procedure).