Package and unit technical data for substations- The subbeam station is composed of an HV compartment consisting of an RMU with a ground fault indicator. Graduated transformer and low voltage cabinet with distribution board. Subunit without RMU.P type S / S and U S / SHV & LV rated 13.8KV & 33KV / 400/231V, 60HzIts rated kVA up to 3,150 kVA..