9
Decommissioning and dismantling
9.1
Switching off the device
DANGER
Lethal voltages are still present in the connections and cables of the device even after the device has
been switched off and disconnected!
Severe injuries or death may occur if the cables and/or terminals/busbars in the device are touched.
›
The device must be mounted in a fixed position before being connected electrically.
›
Comply with all safety regulations and current technical connection specifications of the responsible
power supply company.
›
The device is only permitted to be opened or serviced by a qualified electrician.
›
Switch off the grid voltage by turning off the external circuit breakers.
›
Check that all AC and DC cables are completely free of current using a clip-on ammeter.
›
Do not touch the cables and/or terminals/busbars when switching the device on and off.
›
Keep the device closed when in operation.
DANGER
Destruction of the DC plug connectors
DC plug connectors can be destroyed by arcing if disconnected while still live. It is absolutely essential that
the following shutdown sequence be carried out in the correct order:
›
Check that there is no current in any of the DC cables using a clip-on ammeter.
WARNING
Risk of burns caused by hot housing components
Housing components can become hot during operation.
›
During operation, only touch the housing cover on the device.
9.2
Uninstalling the device
DANGER
Dangerous voltage due to two operating voltages
Severe injuries or death may occur if the cables and/or terminals/busbars in the device are touched. The
discharge time of the capacitors is up to 5 minutes.
›
Only appropriately qualified electricians authorised by the mains supply network operator are permit-
ted to open and maintain the device.
›
Before opening the device: Disconnect the AC and DC sides and wait at least 5 minutes.
↻ Device disconnected and secured against restart.
1 Undo the 2 screws and carefully remove the housing cover [ T_30]
2 Remove the interface cables.
3 Disconnect AC connection plug from the device. AC connection [See section 8.5.1} Page 27]
4 Detach the equipotential bonding cable from the grounding point [ T_30]
5 Detach the interface cables from the sockets on the communication board.
6 Detach the DC cables from the DC plug connectors and furnish with protective caps. DC connection [See sec-
tion 8.5.2} Page 27]
7 Open the cable fittings [ W_29 /
8 Pull the cables out of the device.
Page 28
W_19].
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