Power Rating

30/40/50 MVA

Cooling Type           

ONAN/ONAF1/

ONAF2

Rated Voltage   

(115±2×2.5%)/(13.8±16×0.625%)

Number of Phases     

3 Phase

Rate Current

251.0/2091.8 A

Rated Frequency       

60 Hz

Vector Group     

Dyn1

Type of tap changer

HV No-load Tap changer

LV On-load Tap changer

Winding Temperature Rise: 65℃

Impedance at 85℃: 10.2% on 30MVA base

Number of Windings: Two

Winding Material: Copper

Basic

Insulation

Level

HV Wingding BIL

(KV)             

550

LV Wingding BIL

(KV)             

110

LV NEUTRAL BIL

(KV)         

110