Tag: passivation

27
Sep
2013

The start of depolarisation from corrosive sulfur in Colombia

Quite shortly, the activities for the selective depolarisation from corrosive sulfur (on-load and off-load) on 4 step-up transformers and a rectifier at the hydroelectric power station Urrà in Northern Colombia, department of Còrdoba. The hydroelectric production company Urrà chose the selective depolarisation by Sea Marconi after the failures occurred after passivation. Once again passivation showed to be a ruinous response to the problem of corrosivity of
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