Equipment summary
Specifications and scope
| Unit ID | JJ-SMIT-525-3 |
|---|---|
| Manufacturer | Royal SMIT |
| Manufacturer basis | Supplied nameplate, outline drawing and factory acceptance test report |
| Rating | 240/320/400 MVA; 250 MVA maximum step-down; 90 MVA tertiary |
| Voltage / output | 525/69 kV with 13.7 kV buried-delta tertiary |
| Frequency | 60 Hz |
| Vector group | YNyn0(d1) — Wye–Wye / buried Delta |
| Tertiary | 13.7 kV; confirm winding duty and MVA rating |
| Quantity | 3 units |
| Shipping | 4–8 weeks to ship |
| Availability | Immediately available; estimated 4–8 weeks to ship; subject to prior sale |
| Condition basis | 2022 manufacture shown in supplied nameplate; condition and service history confirmed with quotation |
| Current location | International; dispatch location confirmed with quotation |
| Listing information reviewed |
Technical values and record basis
Supplied nameplate for one documented unit; match the complete package to each of the three offered units.
| Phases | Three-phase |
|---|---|
| Cooling | ONAN / ONAF / ONAF |
| Temperature rise | 50°C average winding / 50°C top oil; 65°C hot spot |
| Conductor | Copper |
| Tap changer | HV OLTC; 472.5–577.5 kV (±10%); 16 raise / 16 lower steps of 0.625% |
| Impedance and base | H–X: 12.90% at 240 MVA, 525/69 kV, 85°C |
| Insulation / BIL | HV winding 1550 kV / bushing 1675 kV; LV 350 kV; tertiary 150 kV |
| Tertiary duty | 13.7 kV buried delta, 90 MVA; corner grounding shown on the nameplate |
| Duty limit | 400 MVA maximum step-up; 250 MVA maximum step-down |
| Total weight with oil | 705,400 lb (319,900 kg) |
| Shipping weight on plate | 501,800 lb (227,600 kg); confirm final shipping configuration |
| Oil volume | 25,390 US gal (96,100 L) |
| Manufacture year | 2022 shown on the reviewed nameplate |
Details to confirm for this listing
- Matching records for each offered unit, current condition, included accessories and transport scope
- Unit-specific factory tests, present preservation and the step-down duty limit
Technical highlights
- Three units offered for allocation; availability and 4–8 week shipping schedule confirmed by J&J on October 1, 2026.
- Nameplate rating: 240/320/400 MVA with ONAN/ONAF/ONAF cooling. Maximum stated duty: 400 MVA step-up or 250 MVA step-down.
- Three-phase, 60 Hz; 525 kV grounded-wye high side, 69 kV wye low side, and 13.7 kV buried-delta tertiary rated 90 MVA.
- Copper windings; MR on-load tap changer; HV tap range 472.5–577.5 kV (±10%).
- HV BIL: 1550 kV winding / 1675 kV bushing. LV BIL: 350 kV.
- Nameplate H-X impedance: 12.90% at 240 MVA base, 525/69 kV, 85°C.
- Supplied 2022 factory acceptance test report records Passed for the documented unit. Nameplate, outline drawing and test report available through J&J; match the records to all three units before purchase.
Evidence reviewed
Supplied nameplate, outline drawing and factory acceptance test report
Records apply only to the stated unit or design basis.
Availability and terms
Immediately available; estimated 4–8 weeks to ship; subject to prior sale
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.
- 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-SMIT-525-3.