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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 | 65 MVA 138/13.8 kV Reconditioned GSUJJ-TX-209 | Five 110 MVA 138/34.5 kV Kolektor ETRA GSUsJJ-138-110-5 |
|---|---|---|
| Manufacturer | ABB | Kolektor ETRA |
| Rating / output | 39/52/65 MVA at 65°C rise | 66/88/110 MVA; 22/29.333/36.666 MVA tertiary |
| Voltage / winding arrangement | 138 kV grounded wye / 13.8 kV delta | 138/34.5 kV with 13.8 kV tertiary |
| Vector group | Grounded wye / delta; clock to confirm | YNyn0+d11 |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF / ONAF; legacy OA / FA / FA in cutsheets | ONAN / ONAF1 / ONAF2 |
| Impedance and base | 9.51% at 39 MVA shown on replacement nameplate; not a new field impedance test | Reviewed nameplate H–X: 8.09% at 66 MVA; supplied FAT reports 13.41% at 110 MVA. Match the test and plate to the selected unit. |
| Tap changer | Five-position de-energized HV tap changer: 144.9, 141.45, 138, 134.55, 131.1 kV (±2 × 2.5%, ±5%) | HV OLTC; 124.2–151.8 kV (±10%); 16 raise / 16 lower steps of 0.625% on the reviewed plate |
| Insulation / BIL | HV winding 550 kV / bushing 650 kV; LV winding 110 kV / bushings 150 kV; HV neutral bushing 150 kV | Not documented; confirm with J&J |
| Quantity represented | One unit; current allocation subject to written confirmation | 5 units; matching unit packages available on request |
| Technical details / open items | 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. | GSU duty; ONAN/ONAF1/ONAF2, 60 Hz, three-phase, vector group YNyn0+d11; Measured impedance: 13.41% on a 110 MVA base at nominal tap; 2020 factory tests passed; those records do not establish current condition; Five-unit lot includes two 2020 builds and three 2021 builds; request all five serial-specific packages before quotation |
| Evidence reviewed | ABB identified by the supplied replacement nameplate and historical refurbishment/test report; original OEM provenance to confirm | Five-unit opportunity confirmed by seller; rating plate and FAT package reviewed for one unit |
| Technical value basis | Supplied 2022 replacement nameplate and historical refurbishment/test report; current inspection is still required. | One supplied nameplate and one factory-test package; values are not established for all five units. |
| Details to confirm | 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 | All five matching nameplates, insulation levels, approved drawings and factory tests; Reconcile unit-specific impedance bases; confirm current preservation and individual shipping weights |
| Represented condition | Reconditioned used transformer; refurbishment completed in 2022 | Brand new, never used and never energized; 2020 factory records reviewed for one unit |
| Equipment location | Location confirmed with quotation | International; dispatch location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | 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. | Available; 5 units represented; remaining unit packages require review; subject to prior sale and written confirmation |
| Availability last confirmed | Request current confirmation | 2026-09-24 |
| Shipping estimate | 6–8 weeks quoted October 1, 2026; current preparation, loading and delivery schedule to confirm | Request a written dispatch and delivery schedule |
| Nameplate reviewed | Yes — request the unit package | Yes — request the unit package |
| Drawings reviewed | Not recorded as reviewed; request them | Not recorded as reviewed; request them |
| Factory test report reviewed | Not recorded as reviewed; request test records | Report reviewed; confirm matching records for each unit |
| This unit only | Email for specs & price | Email for specs & price |
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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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