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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 | HICO 140 MVA 235/34.5/13.8 kV Transformer PairJJ-HICO-235-140-2 | Royal SMIT 525/69 kV Transformers — 3 AvailableJJ-SMIT-525-3 |
|---|---|---|
| Manufacturer | HICO | Royal SMIT |
| Rating / output | 85/115/140 MVA | 240/320/400 MVA; 250 MVA maximum step-down; 90 MVA tertiary |
| Voltage / winding arrangement | 235/34.5/13.8 kV | 525/69 kV with 13.7 kV buried-delta tertiary |
| Vector group | Winding connections and vector clock to confirm | YNyn0(d1) — Wye–Wye / buried Delta |
| Frequency | Not documented; confirm with J&J | 60 Hz |
| Cooling | ONAN / ONAF1 / ONAF2 represented | ONAN / ONAF / ONAF |
| Impedance and base | Not documented; confirm with J&J | H–X: 12.90% at 240 MVA, 525/69 kV, 85°C |
| Tap changer | Not documented; confirm with J&J | HV OLTC; 472.5–577.5 kV (±10%); 16 raise / 16 lower steps of 0.625% |
| Insulation / BIL | Not documented; confirm with J&J | HV winding 1550 kV / bushing 1675 kV; LV 350 kV; tertiary 150 kV |
| Quantity represented | 2 represented matching units | 3 units |
| Technical details / open items | The received offer represents a matching pair at 85/115/140 MVA, 235/34.5/13.8 kV, with copper windings, three phases and ONAN/ONAF1/ONAF2 cooling.; The exact offered high-side rating is 235 kV. Compatibility with a 230 kV project must be established from the actual nameplates, taps, insulation and project requirements.; An early-October arrival in the United States was scheduled in the earlier offer. Arrival has not been confirmed and the units are not described as immediately available U.S. stock.; Individual condition and service history are unresolved; the pair is excluded from the new/unused and used/pre-owned filters until confirmed.; Request both individual nameplates, frequency, winding connections, tertiary duty, tests, preservation/service records, arrival evidence and written purchase and warranty terms. | 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 | Received written offer for a matching pair | Supplied nameplate, outline drawing and factory acceptance test report |
| Technical value basis | Written offer for a matching pair; confirm both actual nameplates. | Supplied nameplate for one documented unit; match the complete package to each of the three offered units. |
| Details to confirm | Both nameplates, current condition/arrival, frequency, rise, connections and tertiary duty; Impedance/base, BIL, taps, factory/service tests, preservation, dimensions/weights and accessories | 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 |
| Represented condition | Individual condition and service history require confirmation | 2022 manufacture shown in supplied nameplate; condition and service history confirmed with quotation |
| Equipment location | Location confirmed with quotation | International; dispatch location confirmed with quotation |
| Technical records reviewed | 2026-10-08 | 2026-10-08 |
| Availability | Early-October 2026 U.S. arrival was scheduled in the received offer; arrival and present allocation are unconfirmed | Immediately available; estimated 4–8 weeks to ship; subject to prior sale |
| Availability last confirmed | Request current confirmation | 2026-10-01 |
| Shipping estimate | Request a written dispatch and delivery schedule | 4–8 weeks to ship |
| Nameplate reviewed | Not recorded as reviewed; request it | Yes — request the unit package |
| Drawings reviewed | Not recorded as reviewed; request them | Yes — request matching unit drawings |
| Factory test report reviewed | Not recorded as reviewed; request test records | Report reviewed; confirm matching records for each unit |
| 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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