Tag: trattamento olio

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 theLeia mais

Scenario Uruguayan utility October 2012: Failure 2 weeks after a reclaim treatment with fuller earth (performed by a local operator). Nameplate data of the transformer: Transformer: grid transformer with OLTC Namufact.: xxx Year: 1977 Power [MVA]: 425 Voltage [KV]: 500 Oil mass [Kg]: 58.000 Oil type: YPF65 paraffinic oil not inhibited Segni di arco elettrico sui contatti del selettore Analysis and diagnosis (by the holder)Leia mais

Scenario Hydro power plant with 3 GSU transformers Nameplate data of the transformer: Manufact: xxx Year: 1965 Power [MVA]: 80 Voltage [KV]: 220 Oil mass [Kg]: 35.000 Oil type: naphthenic blended Solution Selective deplarization treatment (Chedcos) in order to remove the corrosive sulfur compounds and dehalogenation treatments (CDP Process®) in order to remove the PCBs from the oil and the transformers. the tratments were performedLeia mais

Scenario Steel Factory: 8 Equipment Nameplate data of the transformers: Namufact: xxx Year: 1973 Power [MVA]: 85 Voltage [KV]: 63 Oil mass [Kg]: 18.150 Oil type: naphthenic blended Fingerprint dell’olio. Si evidenzia la presenza di composti solforati responsabili della corrosività dell’olio Solution Selective depolarization treatment (Chedcos) in order to remove the corrosive sulfur compounds and dehalogenation treatments (CDP Process®) in order to remove the PCBs from the oilsLeia mais

Scenario Il classico trattamento con terre follari si dimostra totalmente inefficace contro lo zolfo corrosivo Caratteristiche tecniche del trasformatore: Costruttore: xxx Anno: 1969 Potenza [MVA]: 14 Tensione [KV]: 63 Massa olio [Kg]: 4.200 Tipo di olio: Esso Univol 54 Fingerprint dell’olio. Presenza di composti solforati NON DBDS Il trattamento con terre follari (NON da Sea Marconi) non ha prodotto alcun risultatoLeia mais

Scenario Thermal power plant with 8 GSU transformers Nameplate data of the transformers: Power [MVA]: 175 Voltage [KV]: 400 Oil type: naphthenic oil C2 – Corrosione NON legata a DBDS Step 1 The diagnosis in the 2009 showed: Total sulfur = 200 mg/Kg TCS (Total Corrosive Sulfur) = 157 mg/Kg (DBDS eq.) CCD Test = corrosive IFT = 19 mN/m DBTPLeia mais

Scenario Company in the chemical business, 4 GSU transformer Nameplate data of the transformer: Manufatc: xxx Year: 2000 Power [MVA]: 47 Voltage [KV]: 34 Oil mass [Kg]: 12.000 Oil type: naftenico Solution Solution: Selective depolarization treatment (Chedcos) performed on-ste and on-load (transformer in service e fully load during the treatment). The treatment has guaranteed DBDS < 10 mg/kg. Before treatment After treatment DBDS [mg/Kg] 125Leia mais

Scenario Primary substation with 3 Grid transformer and 2 shunt reactors Nameplate data of the transformer: Manufact: xxx Year: 1998 Power [MVA]: 250 Voltage [KV]: 345 Oil mass [Kg]: 118.000 Oil type: naphthenic Analitical and diagnostic results The analysis and subsequent diagnosis performed by Sea Marconi on the machines of the customer showed a clear presence of DBDS Profilo di distillazioneLeia mais

Scenario 4 GSU transformer at thermal power plant Nameplate data of the transformers: Manufact: xxx Year: 1997 Power [MVA]: 192 Voltage [KV]: 400 Oil mass [Kg]: 58.000 Oil type: naphthenic May 2005 The analysis and subsequent diagnosis performed by Sea Marconi on the equipment of the customer showed: Index of corrosiveness =1 (max level) ASTM b 48H= 4C Overall Health index: 0.52Leia mais

Scenario Company involved in energy transmission (36 transformers) Nameplate data of transformers: Power max [MVA]: 528 Voltage max [KV]: 400 Oil mass [Kg]: 96.900 each DBDS max [mg/Kg]: 185 DBDS target [mg/Kg]: <5 2009-2013 Solution: Selective depolarization treatments by Sea Marconi in order to remove corrosive sulfur compounds from the oils.