Tag: DBDS

14
Apr
2021

DBDS treatment has begun on 23 giant transformers in Saudi Arabia

After some difficulties imposed by COVID-19, last February 2021 the treatment campaign in Saudi Arabia kicked off. This is an activity out of the ordinary for the amount of electrical equipment to be treated, 23, their size, up to 130 tons of oil, maximum voltage and power (up to 380 kV and 500 MVA), and consequently the total amount of
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11
Aug
2015

EDP Portugal qualifies Sea Marconi thanks to its corrosive sulphur treatment

Sea Marconi recently intervened to treat a transformer in a hydro-electric production plant in the north of Portugal, owned by EDP (Energias de Portugal), one of the largest producers of energy in Europe and one of the most important industrial groups in Portugal. The brilliant results of this activity earned Sea Marconi formal qualification by EDP (Labelec) for the “regeneration” of insulating
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26
May
2015

Sea Marconi will participate in the Monterrey seminar (Mexico) offering a solution to corrosive sulphur

The 6th “Seminario de Tecnología y Diagnóstico de Transformadores y Fluidos Aislantes” in Monterrey in Mexico has just come to an end, involving the participation of speakers from Sea Marconi. The event was organised by Weidmann and Prolec (General Electric) for all operators involved in the selection, purchase and management of electric transformers with insulating fluid. Over the three days, many themes were dealt
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25
Feb
2015

Hong Kong appoints Sea Marconi to verify DBDS corrosion levels in their transformers

Sea Marconi recently performed an expert activity for the most important utility in Hong Kong. The service involved an analysis and diagnosis campaign on a large fleet of transformers and shunt reactors, for the purpose of verifying the presence of corrosive sulphur by DBDS (C1). The results of this activity allowed us to model the operating conditions of the Client’s machines and subsequently
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14
Feb
2015

IEC 62701, Sea Marconi also at the forefront of recycled oil solutions

In accordance with the IEC 62701 standard (Fluids for electrotechnical applications – Recycledmineral insulating oils for transformers and switchgear), Sea Marconi has developed an ad hoc project for one of the most important European suppliers of transformer oils. The project involves the implementation of a system for the assessment (technical-economical and environmental) of insulating oil properties before and after their reclamation (oil regeneration). In
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23
Apr
2014

Brilliant depolarization in Colombia runs ever faster on the grapevine, generating new opportunities

L’eco The echo generated by the depolarisation from corrosive sulfur carried out last year on 5 transformers (170 tons of oil) at the Urrà power station is arousing considerable interest amongst owners of fleets of electric machines in Colombia. It is not by chance that major projects (e.g. Cali, Medellin, Bogotà) are taking life with the main public and private companies and
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21
Feb
2014

From Brazil arrive an order for an oil treatment plant for corrosive sulfur contamination

Among the interesting outlooks at the end of 2013 there is the acquisition of an important order issued by the Brazilian TAESA, one of the largest groups for the transmission of electric power in Brazil. The subject of the sale is a containerised mobile unit (DMU) capable of performing an integrated treatment of the oil and transformers contaminated by corrosive sulfur, with a flow
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20
Feb
2014

Colombia. The depolarisation treatment for the elimination of DBDS – Corrosive sulfur, has been positively completed

Among the “crown jewels” interventions of 2013, the selective depolarisation to remove the DBDS and polar compounds on 5 transformers must indeed be mentioned. In particular, the activity took place on 4 transformers and a rectifier (for a total of 170 tons of oil) operating at the Urrà, hydroelectric power station North-Western Colombia (read the article relative to the operation start). The said power
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27
Sep
2013

The start of depolarisation from corrosive sulfur in Colombia

Quite shortly, the activities for the selective depolarisation from corrosive sulfur (on-load and off-load) on 4 step-up transformers and a rectifier at the hydroelectric power station Urrà in Northern Colombia, department of Còrdoba. The hydroelectric production company Urrà chose the selective depolarisation by Sea Marconi after the failures occurred after passivation. Once again passivation showed to be a ruinous response to the problem of corrosivity of
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27
Sep
2013

The depolarisation from corrosive sulfur in the desert of Atacama in Chile has been concluded successfully

Chile depolarisation. One of the most “extreme” missions performed by Sea Marconi has been concluded successfully: the treatment of 6 transformers in the desert of Atacama in Chile, the driest place in the world, at 9,000 feet altitude with a temperature range between day and night of more than 30 °C. Our operational engineers were able to adapt to really difficult conditions such
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