Fimer PVS-100-TL - Page 110

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110
The below picture represents the expected status of the switches in the plant after the switching operations has been completed.
PV Strings
External DC
Switch
Internal DC
Switches
Internal AC
Switch
INVERTER UNIT
(Unit under service)
PWRMOD
WBOX
OPEN+LOTO
PV Strings
External DC
Switch
Internal DC
Switches
Internal AC
Switch
INVERTER UNIT
PWRMOD
WBOX
External LV
AC Switch
External Main LV
AC Switch
External LV
AC Switch
LV Distriubution
Panel
MW Switch
LV/MW
Transformer
OPEN+LOTO
OPEN
+
LOTO
OPEN
+
LOTO
8.2.4.8 Remove the DC quick fit connectors (16) from wiring box (02)
NOTE – D This operation can be done only in case of wiring box -SX, -SY, -SX2, SY2 models. The wiring box Standard, -S2 models
doesn’t include the DC quick fit connectors (16). In this case the switch-off and LOTO of external DC disconnect switch is mandatory.
In order to disconnect the PV connectors (16) it is necessary to use the disconnection tool related to the quick-fit connector brand and
model used in the inverter.
• Using the current clamp check the absence of current on DC side, measure each positive and negative DC input string cables (check
the correct setting of the current sensor).
• Remove all quick fit DC connectors (16) from the wiring box (02), using the dedicated disconnect tool. To avoid mechanical interferences,
use a cable tie to collect the disconnected cables.
PVS-100_120-TL_B2_S(X-Y)
6A
6B
6C
6D
5A
5B
5C
5D
3A
3B
3C
3D
4A
4B
4C
4D
2A
2B
2C
2D
1A
1B
1C
1D
16
NOTE – D It is highly recommended to put labels on each cable in order to easily reconnect them to the correct connectors once
completed the service activities.