ABB PVS-100-TL-B-SY2 Product Manual page 148

Internal DC
Switches
OPEN
+
LOTO
External DC
Switch
(If present)
PV Strings OPEN+LOTO
Internal DC
Switches
External DC
Switch
(if present)
PV Strings
Internal DC
Switches
External DC
Switch
(if present)
PV Strings
The time needed for the complete shut-down of the LEDs depends by the input voltage of the
inverter. The complete shut-down of the LEDs may require some minutes.
7. Operations on Internal DC disconnect switches
• Open the two internal DC switches
Unit under service
Power
Module
Internal AC
Switch
Wiring
(if present)
Box
OPEN
+
LOTO
OPEN+LOTO
Unit under service
Power
Module
Internal AC
Wiring
Switch
Box
(if present)
Unit under service
Power
Module
Internal AC
Wiring
Switch
Box
(if present)
• Affix padlocks to prevent operation onto all DC disconnect switches
Affix designated tags (LOTO procedure).
• Check on the status LEDs
carried out (Missing DC voltage status): All LEDs OFF.
- 148 -
(blue in the picture).
15
External LV External Main LV
AC Switch AC Switch
External LV
AC Switch
LV Distriubution
Panel
External LV
AC Switch
if the shutdown command has been
08
8 - Maintenance
15
LV/MW
Transformer
MW Switch
.
15