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)

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
Oil Fingerprint

Identified Critical issues


Applied solutions

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