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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 | 50 MVA-Class 138/13.8 kV Substation PackageJJ-TX-007 | 65 MVA 138/13.8 kV Reconditioned GSUJJ-TX-209 |
|---|---|---|
| Manufacturer | Manufacturer to confirm | ABB |
| Rating / output | 30/39.9/50 MVA at 55 C; 33.6/44.7/56 MVA at 65 C | 39/52/65 MVA at 65°C rise |
| Voltage / winding arrangement | 138 kV delta / 13.8 kV grounded wye | 138 kV grounded wye / 13.8 kV delta |
| Vector group | Delta–Grounded Wye; clock to confirm | Grounded wye / delta; clock to confirm |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF / ONAF | ONAN / ONAF / ONAF; legacy OA / FA / FA in cutsheets |
| Impedance and base | Not documented; confirm with J&J | 9.51% at 39 MVA shown on replacement nameplate; not a new field impedance test |
| Tap changer | Five-position HV DETC: 131.1, 134.55, 138, 141.45 and 144.9 kV (±5%, 2.5% steps) | Five-position de-energized HV tap changer: 144.9, 141.45, 138, 134.55, 131.1 kV (±2 × 2.5%, ±5%) |
| Insulation / BIL | HV 650 kV; LV 110 kV, drawing basis | HV winding 550 kV / bushing 650 kV; LV winding 110 kV / bushings 150 kV; HV neutral bushing 150 kV |
| Quantity represented | 1 represented design package | One unit; current allocation subject to written confirmation |
| Technical details / open items | Oil-immersed substation transformer; ONAN/ONAF/ONAF, 60 Hz, three-phase; HV de-energized tap range: 131.1-144.9 kV; Final impedance, serial number, test data, and manufacture date are not populated | ABB is identified by the supplied replacement nameplate and historical refurbishment/testing report; confirm the original OEM plate and provenance.; Design/nameplate basis: ONAN/ONAF/ONAF, 60 Hz, 65C; Grounded wye / delta.; Tap changer: Five-position de-energized HV tap changer (144.9, 141.45, 138, 134.55, 131.1 kV; +/-2 x 2.5%).; Impedance: 9.51% at 39 MVA as shown in the supplied nameplate drawing; final test values to compare; BIL: HV winding 550 kV; LV winding 110 kV.; 2022 refurbishment and electrical-test report plus supplied nameplate drawing; no pre-refurbishment test records represented.; The supplied nameplate drawing states 138/13.8 kV; a voltage field in the 2022 test report states 115/13.8 kV. Obtain reconciliation and a matching current test package before technical acceptance.; Exterior photographs shown are from the 2022 refurbishment report. Request current dated photographs and inspect present condition through J&J.; Seller reports minimal previous service. J&J confirms it has not been installed since the 2022 refurbishment and has been maintained in storage. Earlier operating records are unavailable.; Documented exterior and cabinet cleaning/painting, bushings and LV bus bars, spare gaskets and bushing hardware; electrical testing included turns ratio, winding resistance, insulation resistance, power factor, excitation current and SFRA.; Inspection can be arranged with a 10% deposit, refundable only if the unit fails the buyer's tests or does not match the advertised specifications and condition. Confirm exact terms in the written offer. |
| Evidence reviewed | Project-specific supplied approval drawings reviewed; final equipment OEM and serial identity require confirmation | ABB identified by the supplied replacement nameplate and historical refurbishment/test report; original OEM provenance to confirm |
| Technical value basis | Supplied approval design drawings; a completed individual nameplate and final equipment identity have not been established. | Supplied 2022 replacement nameplate and historical refurbishment/test report; current inspection is still required. |
| Details to confirm | Final OEM, individual equipment identity, manufacture year, tested impedance and factory reports; Final drawings, current preservation, complete accessories and shipping configuration | Confirm the original OEM plate and vector clock; reconcile inconsistent voltage text in the historical test templates; Current inspection and oil analysis, complete earlier service history, accessories and final handling/shipping dimensions |
| Represented condition | Brand new, never used and never energized; 2024 approval drawings reviewed; serial identity requires confirmation | Reconditioned used transformer; refurbishment completed in 2022 |
| Equipment location | USA | Location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Available; approval drawings reviewed; unit identity requires documentation; subject to prior sale and written confirmation | Offered by J&J; seller indicated 6-8 weeks for preparation/delivery on October 1, 2026. Current inspection, loading and delivery schedule by written confirmation. |
| Availability last confirmed | 2026-09-24 | Request current confirmation |
| Shipping estimate | Request a written dispatch and delivery schedule | 6–8 weeks quoted October 1, 2026; current preparation, loading and delivery schedule to confirm |
| Nameplate reviewed | Not recorded as reviewed; request it | Yes — request the unit package |
| Drawings reviewed | Yes — request matching unit drawings | Not recorded as reviewed; request them |
| Factory test report reviewed | Not recorded as reviewed; request test records | Not recorded as reviewed; request test records |
| This unit only | Email for specs & price | Email for specs & price |
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