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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 | Westinghouse / GE 66 MVA Rebuilt Transformer OffersJJ-WEST-GE-66-2 | Royal SMIT 525/69 kV Transformers — 3 AvailableJJ-SMIT-525-3 |
|---|---|---|
| Manufacturer | Westinghouse | Royal SMIT |
| Rating / output | 39.6/52.8/66 MVA represented; 66 MVA in one supplied report | 240/320/400 MVA; 250 MVA maximum step-down; 90 MVA tertiary |
| Voltage / winding arrangement | 140.9 kV Delta / 34.5 kV Wye in one report; offered as nominal 138/34.5 kV | 525/69 kV with 13.7 kV buried-delta tertiary |
| Vector group | Delta–Wye in one supplied report; both nameplates and clock to confirm | YNyn0(d1) — Wye–Wye / buried Delta |
| Frequency | 60 Hz in the supplied report; confirm both units | 60 Hz |
| Cooling | OA / FA in the supplied report | ONAN / ONAF / ONAF |
| Impedance and base | 7.2% reported; MVA base to confirm | H–X: 12.90% at 240 MVA, 525/69 kV, 85°C |
| Tap changer | Not documented; confirm with J&J | HV OLTC; 472.5–577.5 kV (±10%); 16 raise / 16 lower steps of 0.625% |
| Insulation / BIL | Not documented; confirm with J&J | HV winding 1550 kV / bushing 1675 kV; LV 350 kV; tertiary 150 kV |
| Quantity represented | 2 represented units; report reviewed for 1 | 3 units |
| Technical details / open items | The offer represents two Westinghouse transformers rebuilt by GE Energy, rated 39.6/52.8/66 MVA. One supplied nameplate states March 2008 remanufacture, conflicting with the email's 2012 rebuild claim; reconcile the rebuild history for each unit.; The offered nominal 138/34.5 kV description differs from the 140.9 kV delta / 34.5 kV wye nameplate fields in the supplied report for one unit. Resolve this before approving project duty; 138 kV is not presented as a verified nameplate rating.; The readable report covers one unit, not both. It records three-phase, 60 Hz, 66 MVA, OA/FA cooling, 65 C rise and 7.2% impedance; confirm the nameplate and rating basis for each unit.; Maintenance entries record bottom-valve oil leaks through March 2026 and a broken gauge in November 2025. Present repair completion and condition have not been verified.; A July 2025 dielectric result was recorded as unacceptable, followed by later acceptable readings. Obtain the complete history, current inspection and new tests appropriate to the purchase.; Request the second unit's individual nameplate, test and maintenance package. Historical service entries do not establish present operating status, readiness to energize or availability. | Three units offered for allocation; availability and 4–8 week shipping schedule confirmed by J&J on October 1, 2026.; Nameplate rating: 240/320/400 MVA with ONAN/ONAF/ONAF cooling. Maximum stated duty: 400 MVA step-up or 250 MVA step-down.; Three-phase, 60 Hz; 525 kV grounded-wye high side, 69 kV wye low side, and 13.7 kV buried-delta tertiary rated 90 MVA.; Copper windings; MR on-load tap changer; HV tap range 472.5–577.5 kV (±10%).; HV BIL: 1550 kV winding / 1675 kV bushing. LV BIL: 350 kV.; Nameplate H-X impedance: 12.90% at 240 MVA base, 525/69 kV, 85°C.; Supplied 2022 factory acceptance test report records Passed for the documented unit. Nameplate, outline drawing and test report available through J&J; match the records to all three units before purchase. |
| Evidence reviewed | Written offer identifies Westinghouse manufacture and a GE Energy rebuild; supplied maintenance report covers one unit | Supplied nameplate, outline drawing and factory acceptance test report |
| Technical value basis | Supplied nameplate and maintenance report for one unit in a two-unit offer; match the second unit separately and reconcile the rebuild dates. | Supplied nameplate for one documented unit; match the complete package to each of the three offered units. |
| Details to confirm | Both final nameplates and exact voltage fit; rating stages and impedance bases; Current leak/gauge repairs, oil analysis, full tests, service history and transport scope | Matching records for each offered unit, current condition, included accessories and transport scope; Unit-specific factory tests, present preservation and the step-down duty limit |
| Represented condition | Pre-owned / rebuilt; recorded valve leaks and broken gauge require present repair verification | 2022 manufacture shown in supplied nameplate; condition and service history confirmed with quotation |
| Equipment location | USA | International; dispatch location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Offered September 23, 2026; voltage, present condition and availability require written confirmation | Immediately available; estimated 4–8 weeks to ship; subject to prior sale |
| Availability last confirmed | Request current confirmation | 2026-10-01 |
| Shipping estimate | Request a written dispatch and delivery schedule | 4–8 weeks to ship |
| Nameplate reviewed | Not recorded as reviewed; request it | Yes — request the unit package |
| Drawings reviewed | Not recorded as reviewed; request them | 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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