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Transformers for starting high-efficiency Gas Turbines




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Yes, to renewable energy, but let’s not forget about conventional power stations

There are many developing countries where the demand for energy is growing at an impressive rate. To meet this demand, some of them are investing not just in new renewable energy power plants (e.g. solar, wind and hydroelectric power), but also in conventional gas power plants given the large deposits of underground hydrocarbons and gases. Indeed, the latter allow for greater operating flexibility and shorter implementation times, speeding up the supply of electricity to private homes and industry. All of which is achieved with limited CO2 emissions thanks to the latest technical innovations.

This kind of conventional power plant has allowed GBE to complete numerous supplies in Africa, Asia and Latin America on behalf of the one of the leading European companies specialised in technology for electrical installations. More specifically, the type of product in question consists of a starting gas turbines transformer with a highly accurate load cycle. These specific turbines have an electrical capacity of over 50MW, so significant power, but more surprisingly, an electrical efficiency close to 40%. To achieve these results, turbine technology in the last twenty years has evolved significantly and taken great strides. GBE has always collaborated to the utmost to create prototypes of a transformer that could fit it with these new prerogatives. In particular, GBE has supported this innovation process by creating cast resin transformers with one or two significant secondary voltages, even for installations in places with adverse weather conditions, in which an IP54 protection rating was required for enclosures.

To this end, GBE has obtained TUV certification in recent years for the entire production of protection housing for cast resin transformers from IP23 to IP54. In particular, the IP54 housing is completely sealed, so the transformer can only dispose of any losses through exchange with the side panels. In addition, the transformer must have innovative performance capabilities to guarantee an overtemperature of the windings and core of less than 50°C to avoid compromising the maximum temperature envisaged by the Class F or H insulating material. Unlike conventional housing, it has corrugated panels which result in double the exchange surface in space-saving dimensions. This is another demonstration of the expertise of GBE’s R&D, which is increasingly recognised as an added value giving an edge on the competition.



Transformers and Reactors for marine applications

  • 24 junio 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 […]


A look at the past to define the future

  • 28 mayo 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 […]


Power division: continuous investment

  • 28 mayo 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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