Tag: corrosive sulphur

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 Distillation profile ofRead more

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: 0.52Read more

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.

Scenario Brazilian energy transmission network of TSN e Novatrans with 76 electrical equipment filled with insulating fluids. Brazilian energy transmission network TSN Lines 1181 km Substations 6 Total reactors 40 Reactors with corrosive sulfur 37 (92,5%) Total failed reactors 15 (37,5%) Novatrans Lines 1278 km Substations 6 Total reactors 36 Reactors with corrosive sulfur 13 (36,11%) Total failed reactors (-) 2005 Discovery of DBDS. Sea Marconi, first in theRead more

Benchmarking between the different techniques of oil treatment during the life cycle of oils and transformers Download the flier PDF: Sea Marconi Treatments Vs Fuller Earth treatments ENG (377.5 KiB) Key Factors DMU & Integrated Treatments* Sea Marconi Patented Treatment with typical Fuller Earth Treatment with typical Fuller Earth and regeneration > 600-700 °C Recovery: Physical Properties KV, DGA, H2O  YesRead more

Sea Marconi engineers are currently engaged in Selective Depolarisation from corrosive sulfur (Chedcos) on 6 Power Transformers in Chile.The region is Antofagasta, in more detail, the transformers are installed near the Atacama desert, the driest place on the planet, at 3000 meters above sea level with a temperature range between night and day over 30 °C.Sea Marconi started the treatment about three weeks ago andRead more

Last August, a new and really useful norm has been published to better understand the “corrosive sulfur problem”; it is IEC 62697 ed.1 entitled “Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids”. Particularly enlightening is the introduction of the standard (downloadable for the IEC website), in which, for the first time in the normative field, the DBDSRead more

Last week, on 6th March, the Seminar titled “Seminar on Best Solutions for the Problem of Corrosive Sulfur (DBDS) on Electrical Transformers” organized by Sea Marconi and Teyseer Motor was held in Doha (capital of Qatar) [Press review]. The event provided the participants a greater knowledge and awareness about the problem of corrosive sulfur and, most of all, the possible countermeasures. This problem is very sensitiveRead more

After about two years from the start of the research and development project finalised toward the evaluation of the Selective Depolarisation project used to solve the problem of corrosive sulfur in Brazil, on 28th October 2010, a meeting was held in Rio de Janeiro to share the results of the research. The event has factually validated the Selective Depolarisation processRead more

17th-19th October 2011, Stockholm. Vander Tumiatti participates as speaker at the EuroDoble Colloquium 2011 as expert on the topic of corrosive sulfur. The event that took place in Stockholm is a forum for sharing the best operational practices in the management of electric power plants and industrial sites. The invitation to Sea Marconi underlined the role of very high competenceRead more