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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 | 208 MVA 115/34.5 kV Transformer — 2027JJ-TX-202 | 95 MVA 115/34.5 kV Virginia TransformerJJ-TX-101 |
|---|---|---|
| Manufacturer | Manufacturer disclosed in the qualified technical package | Virginia Transformer |
| Rating / output | 124.8/166.4/208 MVA | 57/76/95 MVA |
| Voltage / winding arrangement | 115 kV HV / 34.5 kV LV | 115/34.5 kV |
| Vector group | Grounded wye / grounded wye | Winding connections and phase shift to confirm |
| Frequency | 60 Hz | Not documented; confirm with J&J |
| Cooling | ONAN / ONAF1 / ONAF2 | Not documented; confirm with J&J |
| Impedance and base | H–X 9% at 125 MVA (supplied design sheet) | Not documented; confirm with J&J |
| Tap changer | HV OLTC ±8 × 1.25% (±10%); no taps shown on X or Y windings | Not documented; confirm with J&J |
| Insulation / BIL | HV line 550 kV; HV neutral, LV line and LV neutral 200 kV | Not documented; confirm with J&J |
| Quantity represented | 1 offered position | 2 schedule entries; distinct unit identities to confirm |
| Technical details / open items | Supplied design data sheet; final unit-specific nameplate and FAT pending.; Ask J&J for the included U.S.-port shipping, commissioning and manufacturer warranty scope in the written offer.; Modifications can be reviewed before completion; feasibility, cost and schedule impact require OEM confirmation.; Any warranty provider, scope, transfer eligibility, start date and commissioning boundary must appear in the written quotation.; Design basis: ONAN/ONAF1/ONAF2, 60 Hz, 65 C temperature rise; grounded-wye high and low sides.; HV OLTC design range ±10%; preliminary 13.8 kV open-delta tertiary. Final unit-specific configuration requires approval.; Design H-X impedance: 9% at a 125 MVA base. This is a design-sheet value, not a final tested result. | Ratings and manufacturer are transcribed from the J&J-submitted schedule; verify them against the matching nameplate and current technical package.; Service history, present condition, frequency, winding arrangement, impedance, tap changer and accessories require unit-specific confirmation.; Historical schedule dates do not establish current dispatch timing, manufacture year or transferable warranty. Request present release terms and any applicable warranty in writing.; Repeated schedule entries are grouped here; quantity is not represented as independently verified stock. |
| Evidence reviewed | Supplied design data sheet; final unit-specific nameplate and FAT pending | J&J-submitted inventory schedule; matching unit-specific technical records to confirm |
| Technical value basis | Supplied guaranteed design sheet; these are design values, not final tested values for an individually matched unit. | Submitted inventory schedule; manufacturer and electrical rating are representations, not an individual nameplate match. |
| Details to confirm | Final unit-specific nameplate, approved revision, tested impedance/losses and final tertiary arrangement; Conductor, OLTC switch specification, complete accessories, current photos and preservation or manufacturing progress | Individual identity and quantity, current photos, condition/service history and preservation; Frequency, cooling/rise, winding connections and clock, impedance/base, BIL, conductor/fluid and tap schedule; Factory/current tests, included accessories, dimensions/weights and final release/transport scope |
| Represented condition | Factory manufacturing position; completion pending | Condition and service history require confirmation |
| Equipment location | Dispatch location confirmed with quotation | Location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | 2027 manufacturing positions offered for allocation; current release terms require written confirmation | Listed for inquiry by J&J; current allocation and release timing require written confirmation |
| Availability last confirmed | Request current confirmation | Request current confirmation |
| Shipping estimate | Projected 2027 completion; shipment and receiving dates require written confirmation | Request a written dispatch and delivery schedule |
| Nameplate reviewed | Not recorded as reviewed; request it | Not recorded as reviewed; request it |
| 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 | Not recorded as reviewed; request test records |
| This unit only | Email for specs & price | Email for specs & price |
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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.
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