30/40/50 MVA substation transformers, 69 kV delta to 12.47 kV wye, with load tap changer
Price on request
2 available
30 MVA substation transformers
A 30 MVA three-phase transformer carries 4,164 A at 4.16 kV, 1,389 A at 12.47 kV and 1,255 A at 13.8 kV at full load.
Every unit is tested before it ships and delivered by us.
Full-load current of a 30 MVA transformer
Three-phase, at the usual line-to-line voltages: the rating in VA divided by √3 and the voltage.
| Voltage | Full-load current |
|---|---|
| 2.4 kV | 7,217 A |
| 4.16 kV | 4,164 A |
| 12.47 kV | 1,389 A |
| 13.2 kV | 1,312 A |
| 13.8 kV | 1,255 A |
| 24.94 kV | 694 A |
| 34.5 kV | 502 A |
| 69 kV | 251 A |
| 115 kV | 151 A |
| 138 kV | 126 A |
Work it out at another voltage with the kVA to amps calculator.
Questions about used 30 MVA substation transformers
How many amps is a 30 MVA transformer?
A 30 MVA three-phase transformer carries 4,164 A at 4.16 kV, 1,389 A at 12.47 kV and 1,255 A at 13.8 kV at full load. Full-load current is the rating divided by √3 times the line-to-line voltage: 30,000,000 VA ÷ (1.732 × 4160 V) = 4,164 A.
What 30 MVA substation transformers does Arcbarn have for sale?
Arcbarn has 3 listings, by makers including Delta Star, Federal Pacific and Waukesha. All 3 are priced on request.
What tests does Arcbarn run on a used 30 MVA substation transformer?
Every unit is tested before it ships: turns ratio (TTR) on every tap; insulation resistance; winding resistance; power factor and capacitance; oil sample: dissolved gas analysis and dielectric strength; tap changer inspection and operation. You see the report before you buy.