3.3. Masonry Substation
Operating a distribution network sometimes requires switching points in addition to the HV/MV substations, in order to limit the effect of a fault on the network. Dis- tribution substations in masonry may be classified into three types:
● Public Distribution substations (DP);
● Distribution substations with LV metering (S ≤ 630KVA);
● Distribution substations with MV metering called specific substations (a transformer whose power S > 630 KVA or several transformers).