In 2020, ADELCO has started over in a technology partnership, this time with the Fundação Euclides da Cunha, of the Institutional Support of the FLUMINENSE Federal University, Rio de janeiro state, for the development of a prototype of a medium-voltage current-limiting, short-circuit to the power distribution system. The device is installed in series downstream of the transformer substations and power, with the aim of protecting assets, the network is subjected to over-currents during a failure in the system.