Your equipment shortlist
Compare equipment before you request it.
Review the published facts side by side. Matching a voltage or MVA rating does not establish compatibility. Ask your project engineer to review the complete unit records.
| Compare | 71.2 MVA Prolec GE 240/120-13.8 kV GSUJJ-PGE-240-71 | 220 MVA 345/34.5 kV Prolec GE TransformerJJ-TX-002 |
|---|---|---|
| Manufacturer | Prolec GE | Prolec GE |
| Rating / output | 42.7/57/71.2 MVA at 60 Hz | 132/176/220 MVA; 46.2/61.6/77 MVA tertiary |
| Voltage / winding arrangement | 240/120 kV grounded-wye dual-voltage to 13.8 kV delta | 345/34.5 kV with 13.8 kV delta tertiary |
| Vector group | Grounded Wye–Delta; clock to confirm | Grounded Wye–Wye / Delta; clock to confirm |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF / ONAF | ONAN / ONAF / ONAF |
| Impedance and base | Not documented; confirm with J&J | Design H–X: 12.0% at 132 MVA |
| Tap changer | Dual-voltage HV DETC; confirm series/parallel reconnection and the complete 11-position tap table | Not documented; confirm with J&J |
| Insulation / BIL | HV winding: 900 kV series / 650 kV parallel; HV bushings 900 kV; LV 110 kV; HV neutral 250 kV | Not documented; confirm with J&J |
| Quantity represented | 1 documented unit | 1 documented unit |
| Technical details / open items | 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 | Collector step-up duty; ONAN/ONAF/ONAF, 60 Hz, three-phase; Grounded-wye / grounded-wye / delta winding configuration; Nominal design H-X impedance: 12.0% on a 132 MVA base |
| Evidence reviewed | Serial-specific approval nameplate drawing reviewed | Serial-specific nameplate and approval drawings reviewed |
| Technical value basis | Supplied approval nameplate drawing; its approval date is not a manufacture date. | Supplied nameplate and approval drawings; design values require matching final factory records. |
| Details to confirm | Final manufacture year, tested impedance/base and selected voltage/tap connection; Current preservation, final oil quantity, dimensions, shipping weight and accessory scope | Final tested impedance, insulation levels, complete tap schedule and approved drawing revision; Overall and shipping dimensions, shipping weight, accessory schedule and current preservation |
| Represented condition | Brand new, never used and never energized | Brand new, never used and never energized; approval drawings reviewed |
| Equipment location | USA | USA |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Available; approval nameplate drawing reviewed; subject to prior sale and written reconfirmation | Available; nameplate and approval drawings reviewed; subject to prior sale and written confirmation |
| Availability last confirmed | 2026-09-24 | 2026-09-24 |
| Shipping estimate | Request a written dispatch and delivery schedule | Request a written dispatch and delivery schedule |
| Nameplate reviewed | Yes — request the unit package | Yes — request the unit package |
| Drawings reviewed | Yes — request matching unit drawings | Yes — request matching unit drawings |
| Factory test report reviewed | Not recorded as reviewed; request test records | Not recorded as reviewed; request test records |
| This unit only | Request more info | Request more info |
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What still needs to be checked?
Confirm frequency, cooling-stage ratings, impedance and its base, taps, vector group, grounding, BIL, site conditions and included scope against the project specification. A table cannot approve the fit.
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