Cile Archives - Sea Marconi https://seamarconi.com/it/tag/cile/ Soluções sustentáveis para a gestão do ciclo de vida (LCM) de transformadores com óleos isolantes Fri, 19 Apr 2024 08:36:10 +0000 pt-PT hourly 1 https://wordpress.org/?v=6.9.4 Remoção de enxofre corrosivo com DBDS (C1) – Chile 2012 https://seamarconi.com/pt/portfolio_item/remocao-de-enxofre-corrosivo-com-dbds-c1-chile-2012/ Fri, 31 May 2013 14:45:01 +0000 http://www.bioenpro.com/wordpress01/?post_type=portfolio&p=4196 The post Remoção de enxofre corrosivo com DBDS (C1) – Chile 2012 appeared first on Sea Marconi.

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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 distillazione del carbonio e dello zolfo

Solution

Solution: Selective depolarization treatment (Chedcos) by Sea Marconi performed on-site and both with transformer in service and fully load (on-load) and with the transformer out of service (off-load).

The treatments guaranteed DBDS < 10 mg/kg

Before treatment

After treatment
DBDS [mg/Kg] 144 < 10
H2O [mg/Kg] 16 5
TAN [mg KOH/g] < 0,01 < 0,01
DF 0,0026 0,0015

The post Remoção de enxofre corrosivo com DBDS (C1) – Chile 2012 appeared first on Sea Marconi.

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