EOS^® CLOSED LOOP MODEL

Steel production
Almost like NEW - investing in 20 neglected transformers
Objective: Ensure reliable production by extending transformer lifetime
Solution: EOS^® insulating oil regeneration 
Step-by-step deep cleaning for twenty 66 kV transformers

Combined heat and power (CHP) plant
Remove potentially corrosive sulphur from 230,000 litres of transformer oil
Objective: To remove the additive from the 1990s called DBDS
Solution: EOS^® insulating oil regeneration 
A total of 50 days of thorough deep cleaning to reduce the DBDS content from 100 ppm to <5ppm

Energy supplier
Extend the service life of transformers by 15 years without high investments
Objective: To deep-clean the insulating oil systems and to remove acids and sludge
Solution: EOS^® develops refurbishment strategy for insulating oil regeneration during operation
Start of an era: Making sustainable asset management for transformers possible

Grid operator
Filling a 132 kV transformer after maintenance work
Objective: Remove contamination and achieve maximum dryness of the insulating oil
Solution: EOS^® insulating oil processing
Restore safety with the Mobile Processing Unit (MPU) after warning message

Distribution system operator
Finding a solution when the newly ordered transformer is delivered late
Objective: Put the decommissioned transformer back into operation
Solution: EOS^® insulating oil treatment
Drying the oil in the old transformer with extensive vacuum/heat treatment

Transformer OEM
Although stored in a dry atmosphere for a long time, the new transformer need to be installed in gas and steam turbine (CCGT) power plants
Objective: To generate a vacuum of less than 1 mbar at low cost and then fill the transformer with insulating oil
Solution: EOS^® Mobile Vacuum Unit (MVU) and Mobile Processing Unit (MPU)
Enable cost-effective transformer installation

Steel production
Which transformer first? Prepare a professional transformer management system
Objective: Organise monitoring for each individual transformer at the production site to avoid failures
Solution: EOS^® develops customised test procedure for regular sampling
Classify transformers according to importance for scheduled transformer oil analyses

Large power plant
Replace a 275 kV generator transformer and store the insulating oil temporarily
Objective: To store the company's own transformer oil for later re-filling into the new transformer
Solution: EOS^® combines Mobile Processing Unit (MPU) and laboratory services with tanker lorries and storage tanks
Oil transport and storage off-site including consistent oil quality monitoring

Aluminium company
Sustainably remove 150,000 litres of insulating oil from decommissioned factory
Objective: Remove the insulating oil from the transformers and save the oil
Solution: EOS^® organises and monitors the draining of the insulating oil in order to recycle it
Recycling of transformer oil: Collecting the used oil, improve the quality and return the oil to the market as recycled insulating oil

Distribution grid operator
25,000 litres of insulating oil from the main tank of a 132 kV transformer temporarily stored on site
Objective: To repair tap changers in an ecologically sensitive area and put them back into operation quickly after filling
Solution: EOS^® insulating oil processing after interim storage of the transformer oil in an oil-rinsed, certified tanker truck
Insulating oil storage and 2-fold circulation directly and promptly on site