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Disconnecting and temporary grounding the drive
(including the input power terminals)
1. Perform the tasks listed in section
(excluding the input power terminals)
2. Switch off and disconnect the breaker of the supply transformer.
3. Secure against reconnection: Lock the disconnectors and attach warning signs.
4. Open the door of the supply unit and ensure by measuring that the input busbars are
not under voltage.
5. If temporary grounding of the input power terminals is needed, connect a temporary
grounding system to the input power terminals and to the grounding (PE) busbar of the
drive. See the local regulations and EN 50110-1: 2004.
Disconnecting and temporary grounding the drive
on page 66.
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