Your equipment shortlist
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 | 220 MVA 345/34.5 kV Prolec GE TransformerJJ-TX-002 | 345/34.5 kV Transformer Production PositionsJJ-TX-204 |
|---|---|---|
| Manufacturer | Prolec GE | Manufacturer disclosed in the qualified technical package |
| Rating / output | 132/176/220 MVA; 46.2/61.6/77 MVA tertiary | 266 MVA offered; final rating requires reconciliation |
| Voltage / winding arrangement | 345/34.5 kV with 13.8 kV delta tertiary | 345 kV HV / 34.5 kV LV |
| Vector group | Grounded Wye–Wye / Delta; clock to confirm | Requires confirmation |
| Frequency | 60 Hz | 60 Hz |
| Cooling | ONAN / ONAF / ONAF | Not documented; confirm with J&J |
| Impedance and base | Design H–X: 12.0% at 132 MVA | Not documented; confirm with J&J |
| 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 | 1 documented unit | 2 offered positions |
| Technical details / open items | 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 | Seller offer summary; exact cooling stages require confirmation.; 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.; The offered summary states 266 MVA. Supplied outlines include different 226 MVA and 266 MVA designs without a confirmed match to each position. Resolve the individual nameplate and design before technical acceptance. |
| Evidence reviewed | Serial-specific nameplate and approval drawings reviewed | Seller offer summary; exact cooling stages require confirmation |
| Technical value basis | Supplied nameplate and approval drawings; design values require matching final factory records. | Received production offer and existing reviewed design package; final individual nameplates and factory tests remain pending. |
| Details to confirm | Final tested impedance, insulation levels, complete tap schedule and approved drawing revision; Overall and shipping dimensions, shipping weight, accessory schedule and current preservation | Match the final design/rating and drawing revision to each offered manufacturing position; Final frequency, cooling/rise, winding duty, impedance/base, BIL, taps, accessories and transport dimensions/weights |
| Represented condition | Brand new, never used and never energized; approval drawings reviewed | Factory manufacturing position; completion pending |
| Equipment location | USA | Dispatch location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Available; nameplate and approval drawings reviewed; subject to prior sale and written confirmation | 2027 manufacturing positions offered for allocation; current release terms require written confirmation |
| Availability last confirmed | 2026-09-24 | Request current confirmation |
| Shipping estimate | Request a written dispatch and delivery schedule | Projected 2027 completion; shipment and receiving dates require written confirmation |
| Nameplate reviewed | Yes — request the unit package | Not recorded as reviewed; request it |
| Drawings reviewed | Yes — request matching unit drawings | 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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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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