Installation of cooling fans, STE brand

Cooling fan to increase efficiency to increase the efficiency of the transformer cooling system from the original 75 MVA to the 90 MVA.
Details as follows :
Supply cooling fan 6 units "STE" Brand, type A63C-B5 Power 
400VAC, 50HZ, 1.1A, 450W Air Flow: 2.81 m3/s
and support Control cabinet for Auto  Manual control