Buying several transformers or reviewing an exact ratio?
For a multi-unit order, specify each electrical configuration, accepted condition and delivery phase. Start with the current equipment records, then request the identity, documents, allocation and quote scope for each proposed unit.
Request a 138/34.5 kV transformer quote
Review the published Kolektor ETRA and Georgia Transformer equipment records by the full cooling-stage MVA and documented condition. Send the required continuous load, generation or step-down duty, quantity and arrival date; the actual unit and project specification determine fit.
138/34.5 kV transformers for sale
For a 138/34.5 kV transformer quote, identify the required MVA, operating direction, winding connection, condition, quantity and delivery date. Review the linked equipment's actual nameplate and stated duty; the ratio alone does not establish a GSU or step-down match. Email tommy@jjtransformers.com or call Tommy Marco at 346-276-9540 for the exact equipment record, price and written availability.
Where can I buy a 138/34.5 kV GSU transformer?
J&J Transformers LLC offers five represented Kolektor ETRA 66/88/110 MVA, 138/34.5 kV GSU transformers, plus Georgia Transformer opportunities in this voltage class. The Kolektor units are brand new, never used and never energized. Confirm every unit's technical package and current condition before purchase. Contact Tommy Marco at 346-276-9540 or tommy@jjtransformers.com with MVA or MW, voltages, quantity, site, and need-by date. Current availability requires written reconfirmation; subject to prior sale. Final allocation and delivery terms are confirmed in writing.
- 300 MVA 138/34.5 kV Georgia Transformer
- 120 MVA 138/34.5 kV Georgia Solar GSU
- Five 110 MVA 138/34.5 kV Kolektor ETRA GSUs
- 42 MVA 138/34.5 kV Virginia Transformer
- 208 MVA 138/34.5 kV Stored Surplus Transformer
- 208 MVA 138/34.5 kV Transformer — 2027
| OEM | MVA | HV / LV / tertiary | Cooling / duty basis | Quantity | Equipment location | Condition and evidence |
|---|---|---|---|---|---|---|
| Georgia Transformer | 180/240/300 MVA; 63/84/105 MVA tertiary | 138/34.5 kV with 12 kV buried-delta tertiary | ONAN/ONAF/ONAF, 60 Hz, three-phase, vector group YNyn0+d1 | 1 documented unit | USA | Brand new, never used and never energized; 2020 nameplate reviewed. Serial-specific nameplate reviewed. |
| Georgia Transformer | 72/96/120 MVA; 25.2/33.6/42 MVA tertiary | 138/34.5 kV with 12 kV buried-delta tertiary | Solar GSU design; ONAN/ONAF1/ONAF2, 60 Hz, three-phase | 1 documented unit | USA | Brand new, never used and never energized; approval drawings reviewed. Serial-specific nameplate and approval drawings reviewed. |
| Kolektor ETRA | 66/88/110 MVA; 22/29.333/36.666 MVA tertiary | 138/34.5 kV with 13.8 kV tertiary | GSU duty; ONAN/ONAF1/ONAF2, 60 Hz, three-phase, vector group YNyn0+d11 | 5 units; matching unit packages available on request | International; dispatch location confirmed with quotation | Brand new, never used and never energized; 2020 factory records reviewed for one unit. Five-unit opportunity confirmed by seller; rating plate and FAT package reviewed for one unit. |
| Virginia Transformer | 25.2/33.6/42 MVA | 138/34.5 kV | Confirm in unit package | 1 schedule entry; individual identity to confirm | Location confirmed with quotation | Condition and service history require confirmation. J&J-submitted inventory schedule; matching unit-specific technical records to confirm. |
| Manufacturer disclosed in the qualified technical package | 125/166/208 MVA | 138 kV HV / 34.5 kV LV | Design basis: ONAN/ONAF1/ONAF2, 60 Hz, 65 C temperature rise; grounded-wye high and low sides. | 1 offered position | Dispatch location confirmed with quotation | Surplus in storage; service history requires confirmation. Supplied design data sheet; final unit-specific nameplate and FAT pending. |
| Manufacturer disclosed in the qualified technical package | 125/166/208 MVA | 138 kV HV / 34.5 kV LV | Design basis: ONAN/ONAF1/ONAF2, 60 Hz, 65 C temperature rise; grounded-wye high and low sides. | 1 offered position | Dispatch location confirmed with quotation | Factory manufacturing position; completion pending. Supplied design data sheet; final unit-specific nameplate and FAT pending. |
Single-unit requirements and multi-unit collector projects
Specify whether you need one replacement, several matching units, or a staged release. A group listing and a single documented unit require different quantity and document checks. Request the records for each proposed unit before treating a group as interchangeable.
- State the required MVA at each cooling stage, not only the highest nameplate rating.
- Identify whether a tertiary is required, what it serves, and the acceptable voltage and rating.
- For multiple units, identify matching requirements and any intended parallel operation for engineering review.
- Separate the total project quantity from the quantity needed for the first delivery.
Send a requirement that can be matched
Start with MVA, quantity, project state, and needed-on-site date. Add the one-line or specification through direct follow-up with Tommy. The email link includes this voltage ratio in the subject.
| Requirement | What to provide |
|---|---|
| Equipment duty | Collector step-up, GSU, substation, replacement, or other defined duty |
| Electrical fit | MVA by cooling stage, winding arrangement, tertiary duty, impedance basis, taps, and frequency |
| Project constraints | Quantity, state, receiving date, footprint, origin restrictions, and controlling specification |
| Commercial scope | Required documents, inspection, included accessories, freight, loading, and acceptance conditions |
138/34.5 kV step-down transformer requirements
For a 138/34.5 kV step-down request, provide both source and output winding voltages, required continuous MVA, quantity and project date. Compare the candidate's actual operating-direction limits, winding connections, grounding, taps, impedance, insulation and installation interfaces. The voltage page remains a screening route; the step-down hub explains duty and quotation evidence.
138/34.5 kV transformer sale and quotation requirements
For a 138/34.5 kV transformer inquiry, identify both winding voltages, the required continuous MVA and the proposed step-down, GSU, substation or autotransformer duty. This voltage category helps organize a purchase request; it does not establish stock at every rating or automatically qualify a candidate for the system.
- Specify condition acceptance, quantity, winding connections, grounding, taps, impedance, installation limits and needed-on-site date.
- Match the actual second winding voltage and duty-specific cooling rating; the high-voltage class alone does not identify the required transformer.
Common questions
Written quotes and supporting records control unit-specific ratings, availability, condition, price, and delivery.
Where can I buy a 138/34.5 kV GSU transformer?
J&J Transformers LLC offers five represented Kolektor ETRA 66/88/110 MVA, 138/34.5 kV GSU transformers, plus Georgia Transformer opportunities in this voltage class. The Kolektor units are brand new, never used and never energized. Confirm every unit's technical package and current condition before purchase. Contact Tommy Marco at 346-276-9540 or tommy@jjtransformers.com with MVA or MW, voltages, quantity, site, and need-by date. Current availability requires written reconfirmation; subject to prior sale. Final allocation and delivery terms are confirmed in writing.
Can I order several 138/34.5 kV transformers together?
Send the total quantity, the required ratings, and a release schedule. J&J can review the public group and single-unit opportunities against that requirement. Group identity, individual records, quantity remaining, and availability must be reconfirmed before a proposal.
What if no listed 138/34.5 kV transformer meets my MVA requirement?
Send the full requirement anyway. J&J can review supply options without representing an unconfirmed unit as available. Include acceptable alternatives only when your engineering team has approved them.
Can I receive drawings and pricing?
Contact Tommy Marco at 346-276-9540 or email tommy@jjtransformers.com with the unit reference and project details. J&J will review document access, current availability, scope, and price for that candidate. Public equipment pages do not constitute a quotation.
Can I request several transformers with different voltage ratios or MVA ratings?
Yes. Send quantity per configuration, winding voltages, continuous MVA, accepted condition and required delivery phase to Tommy. The quotation identifies the actual unit, documents, allocation and included scope for every position. Identical-unit and parallel-operation requirements need explicit review.