SACE Emax DC: Direct Current Applications - VAE ProSys sro

SACE Emax DC: Direct Current ApplicationsDirect Current Network TypologyMedian Point connected to Earth– Fault a: the fault between the two polarities sets up a short-circuit current to which both polaritiescontribute to the full voltage U, according to which the breaking capacity of the breaker isselected.– Fault b: the fault between the polarity and earth sets up a short-circuit current less than that ofa fault between the two polarities, as it is supplied by a voltage equal to 0.5 U.– Fault c: the fault in this case is analogous to the previous case, but concerns the negative polarity.The breaker must be inserted on both polarities.ABB SACE