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In this paper authors present the result of a study oriented to assess the metrological characteristics of measuring systems used for verifying the variation of the ratio errors and phase displacements of inductive voltage transformers vs. temperature. Experimental results show that the designed equipment as well as the set up realized can be considered as a benchmark for the verification of the variations...
Reliability in power transformers is a key factor, and based on its performance during the life time. Whenever safety for people or property is of primary concern, dry-type transformers are used. Traditionally dry transformers were only for MV distribution applications available, but recently dry-type power transformers were introduced for the 72.5 kV sub-transmission voltage class, with ratings up...
• The new conductor can be installed in place of all existing standard MV overhead line conductors • Reduction of new power line total costs • Increased line carrying capacity • Reduction of line components thefts and acts of vandalism
In Enel Distribuzione network there are about 3800 standardised power transformers installed (16, 25, 40, 63 MVA rated power). Present availability on the market of low maintenance components has addressed the utilities towards new ways to manage maintenance operations.
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