Equipment summary
Specifications and scope
| Unit ID | JJ-TSEA-345-266-7 |
|---|---|
| Manufacturer | TSEA energia |
| Manufacturer basis | Reviewed TSEA design drawings and performance data; portfolio quantities updated by J&J on October 16, 2026 |
| Rating | 160/213/266 MVA |
| Voltage / output | 345/34.5 kV with 13.8 kV no-load delta tertiary |
| Frequency | 60 Hz |
| Vector group | YNyn(d1), as stated in the design package |
| Tertiary | 13.8 kV; confirm winding duty and MVA rating |
| Quantity | 7 units |
| Shipping | 2027 production; delivery schedule confirmed by unit and project |
| Availability | Production allocation offered through J&J; subject to prior sale and written release terms |
| Condition basis | Factory manufacturing allocation; completion pending |
| Current location | Dispatch location confirmed with quotation |
| Listing information reviewed |
Technical values and record basis
Reviewed TSEA design drawings and offered performance data. Values describe the documented design; final unit-specific nameplates and factory test results are supplied with the approved technical package.
| Phases | Three phase |
|---|---|
| Cooling ratings | 160/213/266 MVA — ONAN / ONAF1 / ONAF2 |
| Primary / secondary | 345 kV grounded wye / 34.5 kV grounded wye |
| Tertiary | 13.8 kV delta; no load per design drawing |
| Windings / fluid | Copper / mineral oil |
| Temperature rise | 65 °C |
| Design impedance | 8.5% at 160 MVA |
| HV / LV BIL | 1,175 / 200 kV |
| HV OLTC | ±10%; ±16 × 0.625% steps |
| Approximate outline (L × W × H) | 493 × 276 × 367 in |
| Approximate total weight | 571,000 lb |
| Approximate oil volume | 20,500 US gal |
| Possible modifications | Subject to OEM engineering approval, agreed scope, cost and delivery schedule |
Details to confirm for this listing
- Individual unit allocation, production and delivery schedule, approved drawings and final nameplate
- OEM-approved modification scope and final winding/vector configuration
- Final factory test reports, included accessories, warranty and certified transport dimensions/weights
Technical highlights
- 7 units at 266 MVA maximum; the separate 226 MVA group contains 12 units, for 19 total 345 kV units.
- Cooling ratings: ONAN 160 MVA / ONAF1 213 MVA / ONAF2 266 MVA.
- Design impedance: 8.5% at a 160 MVA base. HV/LV BIL: 1,175/200 kV.
- Three-phase, 60 Hz; copper windings, mineral oil and 65 °C temperature rise.
- HV on-load tap changer: ±10% in 0.625% steps; grounded-wye high- and low-voltage windings.
- 13.8 kV delta tertiary shown as no load in the design drawings; external load duty requires OEM approval.
- Possible modifications are available for engineering review. Feasibility, approved configuration, cost and delivery impact require OEM confirmation before order acceptance.
- Quantities reflect the current J&J portfolio allocation. Request individual unit schedules, approved drawings, final nameplates, factory tests and the included shipping, commissioning and warranty scope with your quotation.
Evidence reviewed
Reviewed TSEA design drawings and performance data; portfolio quantities updated by J&J on October 16, 2026
Records apply only to the stated unit or design basis.
Availability and terms
Production allocation offered through J&J; subject to prior sale and written release terms
Ask for the current technical package, price, included accessories and delivery terms.
Confirm the purchase and delivery scope
Ask J&J to confirm the proposed unit’s allocation, price, inspection access, included accessories, loading and freight boundary, receiving arrangements, release schedule, deposit or reservation terms and any applicable warranty. Photos, matching records and inspection arrangements are coordinated through J&J.
Request written termsCheck this transformer against your project
Compare the complete winding arrangement and condition evidence before requesting a quote. A matching voltage ratio alone does not establish suitability.
- Compare 345/34.5 kV transformers
- Match MVA, voltage, impedance, taps and winding connections
- Review seven transformer condition risks before purchase
For this listing’s photographs, reports, pricing and current status, call 346-276-9540 or email Tommy with unit ID JJ-TSEA-345-266-7.