Iifusi zohlobo lwe-“KB, KU, KS” zezefusi zohlobo lwe-“K” kunye ne-“T” ngokomgangatho we-IEC-282. Kukho iintlobo ezintathu: uhlobo oluqhelekileyo, uhlobo oluqhelekileyo kunye nohlobo olunemisonto. Le mveliso ifanelekile kwifusi yokuphuma yeklasi ye-voltage ye-11-36kV.