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Exchange thyristors sizes H1 … H4
3ADW000488R0101 DCS880 Service manual e a
14. Remove the busbars necessary to get full access to the faulty thyristor module.
15. If a current transformer must be removed, mark its position, direction and the connections clearly.
Note:
Remove only as many parts as needed around the faulty thyristor module.
16. Remove the faulty thyristor module and mark it clearly as defective.
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