Remove Faulty Thyristor - ABB DCS800 Service Manual

Remove faulty thyristor

1. Replace all blown fuses and reconnect all fuses taken out during search for the
faulty thyristor.
2. Remove the screws of the DC - busbar plates adjacent to the defective
thyristors
Location of the DC - busbar plates
Note:
It depends on the location of the defective thyristor which DC-busbar plates have
to be disconnected.
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3ADW000195R0501 DCS800 Service Manual e e
DC-
busbar
plates
Exchange of Thyristors for Size D6
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