150 KV EPM cable connections between transformers and SF6 insulated switchgear for 5 substations in Rome

The paper describes a particular application of 150 kV EPM cable to provide short connections within substations in Rome. The principal reasons for making this choice are explained, and the construction characteristics of cables and accessories used for connecting transformers to SF6 insulated switchgear are described. The results of calculations to evaluate the reliability of the connections are reported, together with electrical tests on cable and accessories. The experience acquired from this first installation will be used in making a practical evaluation of the reliability of the present connection and will allow its extension in a subsequent phase, to longer lines in more severe ambient conditions.