Company base: Sugar Land, Texas · Nationwide sales · Tommy Marco

346-276-9540 tommy@jjtransformers.com

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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.

J&J Transformers LLC · 346-276-9540 · tommy@jjtransformers.com

Published specifications for 2 alternatives. Availability remains subject to prior sale and written reconfirmation.
CompareHICO 140 MVA 235/34.5/13.8 kV Transformer PairJJ-HICO-235-140-2120 MVA 138/34.5 kV Georgia Solar GSUJJ-TX-004
ManufacturerHICOGeorgia Transformer
Rating / output85/115/140 MVA72/96/120 MVA; 25.2/33.6/42 MVA tertiary
Voltage / winding arrangement235/34.5/13.8 kV138/34.5 kV with 12 kV buried-delta tertiary
Vector groupWinding connections and vector clock to confirmYNyn0+d1
FrequencyNot documented; confirm with J&J60 Hz
CoolingONAN / ONAF1 / ONAF2 representedONAN / ONAF1 / ONAF2
Impedance and baseNot documented; confirm with J&JMeasured H–X: 6.93% at 72 MVA; design value 7.2%
Tap changerNot documented; confirm with J&JHV OLTC; 117.3–158.7 kV (±15%); confirm the final switch and step schedule
Insulation / BILNot documented; confirm with J&JHV line 650 kV; HV neutral, LV line and LV neutral 200 kV
Quantity represented2 represented matching units1 documented unit
Technical details / open itemsThe 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.Solar GSU design; ONAN/ONAF1/ONAF2, 60 Hz, three-phase; Vector group YNyn0+d1 with HV OLTC and conservator oil system; Nameplate rating is used; an outline-drawing discrepancy requires final seller confirmation
Evidence reviewedReceived written offer for a matching pairSerial-specific nameplate and approval drawings reviewed
Technical value basisWritten offer for a matching pair; confirm both actual nameplates.Supplied unit nameplate; the nameplate takes precedence over the differing outline-drawing rating.
Details to confirmBoth nameplates, current condition/arrival, frequency, rise, connections and tertiary duty; Impedance/base, BIL, taps, factory/service tests, preservation, dimensions/weights and accessoriesResolve the outline-drawing rating discrepancy and confirm the final drawing revision; Current preservation, complete tests, dimensions and included accessory schedule
Represented conditionIndividual condition and service history require confirmationBrand new, never used and never energized; approval drawings reviewed
Equipment locationLocation confirmed with quotationUSA
Technical records reviewed2026-10-082026-10-08
AvailabilityEarly-October 2026 U.S. arrival was scheduled in the received offer; arrival and present allocation are unconfirmedAvailable; engineering package reviewed; subject to prior sale and written reconfirmation
Availability last confirmedRequest current confirmation2026-09-24
Shipping estimateRequest a written dispatch and delivery scheduleRequest a written dispatch and delivery schedule
Nameplate reviewedNot recorded as reviewed; request itYes — request the unit package
Drawings reviewedNot recorded as reviewed; request themYes — request matching unit drawings
Factory test report reviewedNot recorded as reviewed; request test recordsNot recorded as reviewed; request test records
This unit onlyEmail 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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