Equipment summary
Specifications and scope
| Unit ID | JJ-PGE-240-71 |
|---|---|
| Manufacturer | Prolec GE |
| Manufacturer basis | Serial-specific approval nameplate drawing reviewed |
| Rating | 42.7/57/71.2 MVA at 60 Hz |
| Voltage / output | 240/120 kV grounded-wye dual-voltage to 13.8 kV delta |
| Frequency | 60 Hz |
| Vector group | Grounded Wye–Delta; clock to confirm |
| Tertiary | Not documented; confirm the complete winding arrangement |
| Quantity | 1 documented unit |
| Availability | Available; approval nameplate drawing reviewed; subject to prior sale and written reconfirmation |
| Condition basis | Brand new, never used and never energized |
| Condition confirmed by J&J | |
| Current location | USA |
| Listing information reviewed |
Technical values and record basis
Supplied approval nameplate drawing; its approval date is not a manufacture date.
| Phases | Three-phase |
|---|---|
| Cooling | ONAN / ONAF / ONAF |
| Temperature rise | 65°C |
| Conductor / fluid | Copper / mineral oil |
| Tap changer | Dual-voltage HV DETC; confirm series/parallel reconnection and the complete 11-position tap table |
| Insulation / BIL | HV winding: 900 kV series / 650 kV parallel; HV bushings 900 kV; LV 110 kV; HV neutral 250 kV |
| Total design weight | 321,796 lb |
| Core-and-coil weight | 99,823 lb |
| Application | Generator step-up duty; 240 or 120 kV grounded-wye high side to 13.8 kV delta |
Details to confirm for this listing
- Final manufacture year, tested impedance/base and selected voltage/tap connection
- Current preservation, final oil quantity, dimensions, shipping weight and accessory scope
Technical highlights
- Generator step-up transformer; three-phase, 60 Hz, ONAN/ONAF/ONAF
- Dual-voltage grounded-wye high side rated 240 or 120 kV with 13.8 kV delta low side
- De-energized tap changer, copper windings, mineral oil, and suitable-for-step-up designation
- Manufacture date is not completed on the reviewed drawing; 2012 is the drawing-approval date, not a claimed build year
Evidence reviewed
Serial-specific approval nameplate drawing reviewed
Records apply only to the stated unit or design basis.
Availability and terms
Available; approval nameplate drawing reviewed; subject to prior sale and written reconfirmation
Ask for the current technical package, price, included accessories and delivery terms.
Confirm the purchase and delivery scope
Ask J&J to confirm the proposed unit’s allocation, price, inspection access, included accessories, loading and freight boundary, receiving arrangements, release schedule, deposit or reservation terms and any applicable warranty. Photos, matching records and inspection arrangements are coordinated through J&J.
Request written termsCheck this transformer against your project
Compare the complete winding arrangement and condition evidence before requesting a quote. A matching voltage ratio alone does not establish suitability.
- Match MVA, voltage, impedance, taps and winding connections
- Review seven transformer condition risks before purchase
For this listing’s photographs, reports, pricing and current status, call 346-276-9540 or email Tommy with unit ID JJ-PGE-240-71.


