Three-phase transformer – 4.20/5.60 MVA – 25kV/4160V – ONAN/ONAF
Maker :
PIONEER TRANSFORMERS
Nominal voltage :
24 940V-14 400 V / 4 160 V
Rated current :
129.6 A / 777 A
Impedance:
6.00%
Cooling class:
ONAN / ONAF
Year of manufacture :
1999
Off-load tap changer:
# 1 – 26 187 V
# 2 – 25,564 V
# 3 – 24,940 V
# 4 – 24,317 V
# 5 – 23,693 V
YNd1
Total weight: 10 400 KG
BIL: 150kV / 60kV
Liters of oil: 2900L
Dimension :
117 “(D) x 117” (W) x 105 “at the top of the HT crossing
HV / LV output at opposite longitudinal ends
Accessories :
Decompression device
Level Gauge, Pressure Vacuum Gauge, Temperature Gauge, Sudden Overpressure Indicator
Emergency service transformer.
Never worked more than 1 week continuously at 0.5pu maximum.
Kept indoors from 2019
Full of mineral oil (no PCB)
