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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 | 88 MVA 230/34.5 kV WEG Power TransformerJJ-WEG-230-88 | New 220 MVA 230/34.5 kV ABB/Hitachi TransformerJJ-230-220-1 |
|---|---|---|
| Manufacturer | WEG | ABB / Hitachi |
| Rating / output | 53/70.5/88 MVA; 18.55/24.675/30.8 MVA tertiary | 132/176/220 MVA |
| Voltage / winding arrangement | 230/34.5 kV with 13.8 kV stabilizing delta tertiary | 230/34.5 kV with 13.8 kV buried-delta tertiary |
| Vector group | YNyn0d1 | YNyn0d1 — Wye–Wye / Delta |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF1 / ONAF2 | ONAN / ONAF / ODAF |
| Impedance and base | Not documented; confirm with J&J | H–X: 10.47% at 132 MVA, 230/34.5 kV |
| Tap changer | HV OLTC; 207–253 kV (±10%); 16 raise / 16 lower steps of 0.625% | HV OLTC; nameplate tap table spans 205.8–254.2 kV; confirm the selected tap and final switch schedule |
| Insulation / BIL | Not documented; confirm with J&J | HV line 900 kV; HV neutral, LV and tertiary 200 kV |
| Quantity represented | 1 nameplate-documented unit | 1 unit |
| Technical details / open items | Three-phase, 60 Hz, ONAN/ONAF1/ONAF2, vector group YNyn0d1; 230 kV grounded-wye primary, 34.5 kV grounded-wye secondary, and 13.8 kV stabilizing delta tertiary; HV LTC represented at plus/minus 10% with 16 raise and 16 lower steps; 2020 manufacture shown on the reviewed nameplate drawing | 132/176/220 MVA, 230 kV grounded-wye high side and 34.5 kV grounded-wye low side; YNyn0d1 connection documented in the manufacturer factory test report; 13.8 kV buried-delta tertiary; 2021 ABB rating-plate drawing; three-phase, 60 Hz, ONAN/ONAF/ODAF cooling; Contact Tommy Marco directly for the technical package, price, and delivery arrangements; Nameplate impedance: 10.47% on a 132 MVA, 230/34.5 kV base; final configuration confirmed with the technical package |
| Evidence reviewed | Serial-specific nameplate drawing reviewed | Manufacturer nameplate and factory test report reviewed |
| Technical value basis | Supplied approval nameplate drawing; the impedance field is not completed. | Supplied unit nameplate and historical factory photograph; current inspection and matching factory records remain necessary. |
| Details to confirm | Final tested impedance/base, all winding/bushing BIL levels and oil quantity; Matching factory tests, current preservation, final dimensions and complete accessories | Current preservation, complete factory-test reports and included accessory schedule; Overall/shipping dimensions, shipping weight, oil quantity and loading arrangements |
| Represented condition | Brand new, never used and never energized; 2020 nameplate reviewed | Brand new, never used and never energized |
| Equipment location | USA | USA |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Available; nameplate drawing reviewed; subject to prior sale and written reconfirmation | Available; confirmed by J&J on September 24, 2026; 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 | Report reviewed; confirm matching records for each unit |
| This unit only | Request more info | Request more info |
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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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