Overvoltage Protection; Disconnecting Connections - Kaco blueplanet 15.0 TL3 Manual Del Usuario

2 Disconnect the DC side using the integrated DC isolator switch.
DANGER! The DC cables are still live!
» After shutdown, wait 5 minutes before opening the device.
8.5

Overvoltage protection

DANGER
Risk of fire if the overvoltage module is disconnected under load!
The connection terminals and fuse holder can be destroyed by arcing if disconnected or if the modules are
removed.
ü Switch-on sequence:
› Switch off the grid voltage by turning off the external circuit breakers.
› Switch off the PV generator using the DC isolator switch.
› The DC cables are still live!
› Check that there is no current in any of the DC cables using a clip-on ammeter.
› Only open the fuse holder once you have established that there is no current in the DC cables.
› Ensure that there is no voltage present on the grid connection terminals.
Checking the overvoltage protection modules
↻ The shutdown sequence in the preceding warning has been carried out.
↻ Lower housing cover open.
↻ Base monitoring must be activated via the menu SPD monitoring.
1 Check individual modules using the status display.
NOTE: Faulty modules report a colour-coded status.
» Testing finished, replace any faulty modules.
Replacing the overvoltage protection modules
↻ Ensure there is no AC/DC voltage present.
↻ NOTE: Modules can be ordered from the KACO customer service team.
1 Unlock faulty DC modules via the upper locking latches using a screwdriver.
2 Remove faulty modules from the base.
3 Transfer the coding in the base to the new module of the same type.
4 Insert modules into the base.
» Surge protection device is fully equipped. Close the housing cover and switch on
the device (Commissioning).
8.6

Disconnecting connections

8.6.1 AC connection
↻ It has been ensured that there is no AC/DC voltage present.
1 Undo the 4 screws and carefully remove the housing cover [ T_30].
2 Unfasten the cables (L1/L2/L3/N/PEN) from the AC connection terminal [ T_45].
3 Detach the PE line from the earthing bolt [ T_20].
4 Unfasten the cable fitting and remove the cables through the cable fitting [ W_36].
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Fig. 23: DC overvoltage protection
1 Lock
2 Overvoltage module
3 Status indicator
4 Base
KACO blueplanet 15.0 TL3 KACO blueplanet 20.0 TL3
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