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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 | 7 TSEA 266 MVA 345/34.5 kV TransformersJJ-TSEA-345-266-7 | 220 MVA 345/34.5 kV Prolec GE TransformerJJ-TX-002 |
|---|---|---|
| Manufacturer | TSEA energia | Prolec GE |
| Rating / output | 160/213/266 MVA | 132/176/220 MVA; 46.2/61.6/77 MVA tertiary |
| Voltage / winding arrangement | 345/34.5 kV with 13.8 kV no-load delta tertiary | 345/34.5 kV with 13.8 kV delta tertiary |
| Vector group | YNyn(d1), as stated in the design package | Grounded Wye–Wye / Delta; clock to confirm |
| Frequency | 60 Hz | 60 Hz |
| Cooling | Not documented; confirm with J&J | ONAN / ONAF / ONAF |
| Impedance and base | Not documented; confirm with J&J | Design H–X: 12.0% at 132 MVA |
| Tap changer | Not documented; confirm with J&J | Not documented; confirm with J&J |
| Insulation / BIL | Not documented; confirm with J&J | Not documented; confirm with J&J |
| Quantity represented | 7 units | 1 documented unit |
| Technical details / open items | 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. | Collector step-up duty; ONAN/ONAF/ONAF, 60 Hz, three-phase; Grounded-wye / grounded-wye / delta winding configuration; Nominal design H-X impedance: 12.0% on a 132 MVA base |
| Evidence reviewed | Reviewed TSEA design drawings and performance data; portfolio quantities updated by J&J on October 16, 2026 | Serial-specific nameplate and approval drawings reviewed |
| Technical value 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. | Supplied nameplate and approval drawings; design values require matching final factory records. |
| Details to confirm | 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 | Final tested impedance, insulation levels, complete tap schedule and approved drawing revision; Overall and shipping dimensions, shipping weight, accessory schedule and current preservation |
| Represented condition | Factory manufacturing allocation; completion pending | Brand new, never used and never energized; approval drawings reviewed |
| Equipment location | Dispatch location confirmed with quotation | USA |
| Technical records reviewed | 2026-10-16 | 2026-10-08 |
| Availability | Production allocation offered through J&J; subject to prior sale and written release terms | Available; nameplate and approval drawings reviewed; subject to prior sale and written confirmation |
| Availability last confirmed | Request current confirmation | 2026-09-24 |
| Shipping estimate | 2027 production; delivery schedule confirmed by unit and project | Request a written dispatch and delivery schedule |
| Nameplate reviewed | Not recorded as reviewed; request it | Yes — request the unit package |
| Drawings reviewed | Yes — request matching unit drawings | Yes — request matching unit drawings |
| Factory test report reviewed | Not recorded as reviewed; request test records | Not recorded as reviewed; request test records |
| This unit only | Request more info | Request more info |
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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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