Provide labor, material, equipment, related services, and supervision required, including, but not limited to, manufacturing, fabrication, erection, and installation for Medium Voltage Unit Substations (also identified as primary unit substations, secondary unit substations, MV USS or USS) as required for the complete performance of the work, and as shown on the Drawings and as herein specified. MV Unit substations shall consist of a primary MV (>1000 V) incoming section, a MV substation transformer and a secondary outgoing section to distribute power. Primary unit substations shall transform MV to a lower MV for distribution and secondary unit substations shall transform MV to LV (≤1000 V) and for distribution.