Vacuum Pressurized Impregnated Dry Type Transformer (VPI)

Rating 

63 kVA to 5 MVA  

Voltage Class

Up to 33 kV  

Frequency  

50/60 Hz  

No of Phase

Single & Three Phase  

Cooling  

AN & AN/AF  

Vector Group  

As per customer requirement  

Winding Material  

Cu / Al  

Tapping  

OCTL, OCTC, OLTC 

Insulation Class  

F/H/R  

Applicable Standards  

IS 11171, IEC 60076-11, IEC / EN 61378, EN  

IP protection IP 23, IP 33, IP44; smaller ratings up to IP54 

Default accessories: Surge arresters, space heaters, temperature sensors / Indicator,

anti-vibration pads, etc.