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Oil Power Transformers

GBE supplies oil power transformers up to 50 MVA with voltage of 145kV (BIL650), with Off Circuit or On Load Tap Changer. TheOn Load Tap Changer can be either external or internal to the transformer tank. The oil power transformer is made according to constructive and design criteria as to ensures the highest operational reliability and a great performance in the electrodynamic stress, as well as excellent isolation so to avoid  problems related to possible network overvoltages. The magnetic core is made with high permeability 45 degrees cut steel sheets in the European or American step lap type. The pack tighteners of the magnetic sheets are sized appropriately to ensure the mechanical sealing, noise reduction, and any problem relating to the handling or stresses of the windings. The MV and HV windings are made of a disc or with transposed cable conductors; they are made with horizontal or vertical winding machines by experienced staff in a controlled environment. The positioning of the coils and the gap between them and between the layers is performed according to the precise indications of the electrical design, as well as the type of conductor and the its processing. The drying and pressing process of the windings prior to assembly is fundamental and is carried out in a furnace with dry air circulation, monitored and recorded temperatures.

The power transformer can have two or more windings and can be fitted with compensation winding.

News

Transformers and Reactors for marine applications

  • 24 June 2020

Offshore and onshore, an exclusive product for all types of marine installations Transformers and reactors for marine applications are distinguished in two different types of installations: offshore and onshore. For each of these installations, additional distinctions can be made depending on the application and use. GBE develops these exclusive products in cast resin, dry type […]

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A look at the past to define the future

  • 28 May 2020

  GBE celebrates 20 years of business. We have achieved excellent results thus far, but we’re not done yet. There are numerous projects currently under way – not only in terms of the production process, with new investments especially in the power division – but also in regards to certifications in new markets where specific […]

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Power division: continuous investment

  • 28 May 2020

  Tripled production capacity for power transformers     GBE produces air-insulated, cast resin and oil-filled, special and distribution transformers and reactors. In recent years we’ve increased the number of units produced for each type of transformer and reactor, as well as the average power, following an increase in orders for the power division, which is steadily […]

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