Power transformer ETRA HYDRO

immersedvoltageoil-filled

Range of mineral oil power transformers from 10 to 500 MVA and up to 420 kVA, for hydroelectric power stations; custom-made power transformers manufactured in Europe. Description Kolektor ETRA supplies oil-filled power transformers up to 500 MVA and voltage up to 420 kVA. For step-up power transformers, as for production transformers in hydroelectric power stations, we pay particular attention to reducing the transformer’s noise level, as well as ensuring very low load and no-load losses. We also take into account the sizing of conductors and insulating materials to cope with production peaks linked to hydroelectric turbine output, and the effects of overheating linked in particular to sunshine or the use of the transformer in confined areas. Low levels of no-load and on-load losses require the use of the best materials and a great deal of technological know-how, which KOELKTOR ETRA® has at, enabling us to offer you the transformer that will cost you the least throughout its life cycle, whether it is on-load or no-load. The noise levels achieved for the transformers are low enough to considerably reduce the cost of building anti-noise devices. For hydroelectric applications, we can offer transformers equipped with ONAN, ONAF, ODAF, OFAF, ODWF or OFWF cooling systems. Finally, thanks to our EDF-ISATION programme launched in 2016 with the SANERGRID Group and our power transformer experts SYNERDIS® , you benefit from service and technical support in French from the sales department, to the design office, via factory project management, and site project management in France thanks to our subsidiary SONEC® (see Accessories and options tab).