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 | 120 MVA 138/34.5 kV Georgia Solar GSUJJ-TX-004 | Five 110 MVA 138/34.5 kV Kolektor ETRA GSUsJJ-138-110-5 |
|---|---|---|
| Manufacturer | Georgia Transformer | Kolektor ETRA |
| Rating / output | 72/96/120 MVA; 25.2/33.6/42 MVA tertiary | 66/88/110 MVA; 22/29.333/36.666 MVA tertiary |
| Voltage / winding arrangement | 138/34.5 kV with 12 kV buried-delta tertiary | 138/34.5 kV with 13.8 kV tertiary |
| Vector group | YNyn0+d1 | YNyn0+d11 |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF1 / ONAF2 | ONAN / ONAF1 / ONAF2 |
| Impedance and base | Measured H–X: 6.93% at 72 MVA; design value 7.2% | 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 | HV OLTC; 117.3–158.7 kV (±15%); confirm the final switch and step schedule | HV OLTC; 124.2–151.8 kV (±10%); 16 raise / 16 lower steps of 0.625% on the reviewed plate |
| Insulation / BIL | HV line 650 kV; HV neutral, LV line and LV neutral 200 kV | Not documented; confirm with J&J |
| Quantity represented | 1 documented unit | 5 units; matching unit packages available on request |
| Technical details / open items | Solar GSU design; ONAN/ONAF1/ONAF2, 60 Hz, three-phase; Vector group YNyn0+d1 with HV OLTC and conservator oil system; Nameplate rating is used; an outline-drawing discrepancy requires final seller confirmation | 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 | Serial-specific nameplate and approval drawings reviewed | Five-unit opportunity confirmed by seller; rating plate and FAT package reviewed for one unit |
| Technical value basis | Supplied unit nameplate; the nameplate takes precedence over the differing outline-drawing rating. | One supplied nameplate and one factory-test package; values are not established for all five units. |
| Details to confirm | Resolve the outline-drawing rating discrepancy and confirm the final drawing revision; Current preservation, complete tests, dimensions and included accessory schedule | 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 | Brand new, never used and never energized; approval drawings reviewed | Brand new, never used and never energized; 2020 factory records reviewed for one unit |
| Equipment location | USA | International; dispatch location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Available; engineering package reviewed; subject to prior sale and written reconfirmation | Available; 5 units represented; remaining unit packages require review; 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 | 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 |
One request
Request Availability for Your Shortlist.
Email Tommy to discuss these options. The listing IDs will already be in the email subject.
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.
Match the nameplate to the specification · Review surplus equipment records · Procurement checklist