Chile Archives - Sea Marconi https://seamarconi.com/it/tag/cile/ Sustainable solutions for life cycle management (LCM) of electrical transformers with insulating oils Fri, 19 Apr 2024 08:36:10 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 Removal of corrosive sulfur with DBDS (C1) Chile 2012 https://seamarconi.com/en/portfolio_item/removal-of-corrosive-sulfur-with-dbds-c1-chile-2012/ Fri, 31 May 2013 14:45:01 +0000 http://www.bioenpro.com/wordpress01/?post_type=portfolio&p=4196 The post Removal of corrosive sulfur with DBDS (C1) <strong>Chile 2012</strong> 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

Distillation profile of the carbon and sulfur

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 Removal of corrosive sulfur with DBDS (C1) <strong>Chile 2012</strong> appeared first on Sea Marconi.

]]> Sea Marconi in the Atacama Desert in Chile for the Selective Depolarization from corrosive sulfur https://seamarconi.com/en/newsblog/sea-marconi-in-the-atacama-desert-in-chile-for-the-selective-depolarization-from-corrosive-sulfur/ Fri, 30 Nov 2012 16:34:07 +0000 https://seamarconi.com/it/?post_type=newsblog&p=107853 The post Sea Marconi in the Atacama Desert in Chile for the Selective Depolarization from corrosive sulfur appeared first on Sea Marconi.

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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 and are already available the excellent results for the first transformer depolarized with Chedcos by Sea Marconi technologies.

Customer: Electrical substation (Cile)
Year: 1998
Builder: Zaporozhtransformator
Power: 250 MVA
Voltage: 345 KV
Oil mass: 118000 Kg

 

DBDS

[mg/Kg]

 

H2O

[mg/Kg]

 

TAN

[mg KOH/g]

 

DF

 
Before treatment

144

 

16

 

< 0,01

 

0,0026

 
After treatment

< 10

 

5

 

< 0,01

 

0,0015

 

 

The post Sea Marconi in the Atacama Desert in Chile for the Selective Depolarization from corrosive sulfur appeared first on Sea Marconi.

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