Élimination de la corrosion des métaux dissous (C4) et des boues Italie 2003

Scenario

Hydro power plant

Nameplate data of transformer:

Transformer: GSU transformer
Power [MVA]: 30
Voltage [KV]: 130
Oil mass [Kg]: 58.000
Oil type: paraffinic

	Before the treatment
Cu [mg/Kg]	43
TAN [mg KOH/g]	0,213
Color	3
DF	1,268

Solution Sea Marconi

Solution: Selective Depolarization treatment (Chedcos) performed on-load (transformer fully load during the treatment)

Trattamento di depolarizzazione selettiva Chedcos e Desludging — Selective depolarization treatment: Chedcos

	Before the treatment	After the treatment
Cu [mg/Kg]	43	1,23
TAN [mg KOH/g]	0,213	0,03
Color	3	1
DF	1,268	0,074

caso15_IFED — Fingerprint dell’olio

C4 Italie métaux huile isolante traitement de l'huile soufre corrosif

Problèmes critiques identifiés

Solutions appliquées