ABB PVS-100-TL-B-SY2 Product Manual page 147

This operation can be done only in case of wiring box
The wiring box
Internal DC
Switches
External DC
Switch
(If present)
OPEN+LOTO
PV Strings
Internal DC
Switches
External DC
Switch
(if present)
PV Strings
Internal DC
Switches
External DC
Switch
(if present)
PV Strings
6. Operations on internal AC disconnect Switch
SX/SY model doesn't include the AC switch
02
• Open the main AC disconnect switch
below).
Inverter 1
Unit under service
Power
Module
Internal AC
Switch
Wiring
(if present)
Box
OPEN
+
LOTO
OPEN+LOTO
Inverter 2
Power
Module
Internal AC
Wiring
Switch
Box
(if present)
Inverter 3
Power
Module
Internal AC
Wiring
Switch
Box
(if present)
• Affix padlocks to prevent operation onto AC disconnect switch
Affix designated tags (LOTO procedure).
- 147 -
SX2/SY2 model.
02
09
(shown in blue in the picture
09
External LV External Main LV
AC Switch AC Switch
External LV
AC Switch
LV Distriubution
Panel
External LV
AC Switch
8 - Maintenance
(if present)
09
.
LV/MW
Transformer
MW Switch
09
.