Cenário Concessionária de transmissão no Oriente Médio com uma frota de transformadores estratégicos (380 kV, até 500 MVA), operando com cargas elevadas e sob condições climáticas extremas. Uma campanha de análises evidenciou a presença disseminada de DBDS e compostos sulfurados corrosivos nos óleos isolantes, com risco potencial de formação de sulfetos metálicos e falhas subsequentes. Características técnicas 22 equipamentos (transformadores,Leia mais

Cenário 3 transformadores monofásicos instalados em uma central termoelétrica no sul da Espanha   Características técnicas do transformador: Fabricante: xxx Ano: 1977 Potência [MVA]: 216 Tensão [KV]: 220/22 Massa de óleo [Kg]: 15.650 cada um Problema As análises periódicas do óleo mostravam uma condição de hidratação do isolamento celulósico. O teor estimado de água nos isolantes sólidos estava entre 3Leia mais

Locais no mundo Sea Marconi Technologies s.a.s. Via Ungheria 20 10093 Collegno (Torino), Italia Tel : +39 011 234.34.34 Fax: +39 011 234.34.35 eMail: info@seamarconi.it pec: seamarconi@pec.it Sea Marconi Envirotech Italia S.r.l. via De Actis contrada Temerano 73050 Seclì (Lecce), Italia Tel: +39 0836 61.02.70 Fax: +39 0836 61.92.66 eMail: info@seamarconi.it pec: seamarconi.envirotech@pec.it Sea Marconi Energia y Medio Ambiente s.l. Poligono Ind.Leia mais

Situation A global leader in the energy sector Technical specifications of transformer: Manufacturer: xxx Year: 2013 (new) Power [MVA]: 185 Voltage [kV]: 380/150 Oil mass [kg]: 50.940 Problem Transformer empty following transport to destination site. Solution Estratto del rapporto di prova con esiti analitici dell’olio a fine intervento Sea Marconi implemented the following measures: Filling the transformer under vacuum andLeia mais

Situation Twin transformers installed in a quarry: Manufacturer: xxx Year: 1980 Power [MVA]: 250 Voltage [kV]: 400 Oil mass [kg]: 41,000 Problem Following a problem associated with excessive gas formation diagnosed by another supplier, the latter asked Sea Marconi to drain the oil, keep the transformers under vacuum for a specified period, then refill them with oil and carry outLeia mais

Situation A global leader in the energy and infrastructure sector Technical specifications of transformer: Manufacturer: xxx Year: 2012 (new) Power [MVA]: 80 Voltage [kV]: 227/21/21 Oil mass [kg]: 26.700 Problem Following an initial request to fill the new transformer, when the Sea Marconi technicians arrived they noticed there was free water inside the transformer. This was due to the transformerLeia mais

Cenário Empresa de produção hidroelétrica. O transformador está localizado nos picos do Adamello (Lombardia). Problema Dificuldades logísticas extremas relacionadas com o acesso ao local operacional: presença de mais de um metro de neve, inclinação elevada e altitude da estrada de acesso. O helicóptero é o único meio adequado para transportar os equipamentos de tratamento de óleo, o que implica restriçõesLeia mais

Scenario Primary alluminiun factory: 8 Rectifier Transformers (Sweden) Nameplate data of transformers: Manufact: xxx Year: 1930 Power [MVA]: 19 Voltage [KV]: 13 Oil Mass [Kg]: 15.000 Oil type: mineral blended Solution Selective depolarization treatment (Chedcos) in order to remove the DBDS + dehalogenation treatment (CDP Process) in orderr to remove the PCBs both from oil and transformers. The treatments were performed on-site, on-line and on-load (transformer in servise andLeia mais

Scenario Hydro Power Plant The transformer is located near a river dam with extreme logistical and environmental constraints. The option of changing the oil was discarded immediately because of the enormous difficulties in handling (see. Photo) around the transformer. At the same time the fuller earth techniques would not solve the functional criticalities of the system “oil – transformer”. NameplateLeia mais

Scenario Nameplate data of transformer: Trasformatore: grid transformer Manufact: xxx Year: 1970 Power [MVA]: 70 Voltage [KV]: 225 Oil mass [Kg]: 38.000 Solution Sea Marconi Dealogenazione (CDP Process®) treatment in order to remove the PCBs, performed on-load (this means that the transformer is in service and under load during the treatment) Trend of PCBs and chlorine content during the dehalogenation treatment (CDP Process)Leia mais