Switchyard Supply
Representative 345 kV class generator step-up transformer at dusk, HV bushings and radiator banks in view
Representative class photos. Serial-unit records are captured on the order evidence pack.

GSU

Campus BTM GSU . 400 MVA · 345/18 kV

400 MVA · 345 / 18 kV · 60 Hz

About this listing

  • 400 MVA, 345 / 18 kV, ONAF cooling.
  • Ship-to US. Rail / heavy-permit. FAT and verified receive available on the quotation.
  • Working-capital interest can be flagged on the quotation. Partner-indicated, subject to underwriting. No live APR.
  • Compliance targets: IEEE C57, IEC, BABA interest, Interconnect ready, ISO 9001, UL.

Specifications

Catalog No.SY-GSU-400-345-18
MVA400 MVAVerify at quotationCooling stage sets the usable rating.
Primary / secondary345 / 18 kV
Frequency60 Hz
CoolingONAFVerify at quotationONAN/ODAF per OEM.
Vector groupOEM to proposeVerify at quotationYNd / Dyn common.
OLTCYesVerify at quotationTap range.
BIL1050 kV classVerify at quotationInferred from primary kV per IEEE/IEC.
%ZIndicative template 8-12% Z on rated MVAVerify at quotationDual-OEM parallel / interchange. IEEE C57 / OEM proposal.
StandardsIEEE C57; IEC 60076 as dual-path option
Lead time28-42 weeks AROVerify at quotationTarget, subject to confirmation.
Ship-toUS
HaulRail / heavy-permit
Campus fitBehind-the-meter campus, generic class

Rows marked Verify at quotation are quoted from class data and locked on the formal quotation, never assumed from this page.

Deep specs

  • Impedance: Indicative template 8-12% Z on rated MVA (confirm for dual-OEM parallel / interchange; IEEE C57 / OEM proposal)
  • BIL: Indicative 345 kV class BIL per IEEE C57.12.00 - typically 1050-1300 kV BIL band; confirm OEM nameplate
  • Cooling: ONAF primary; confirm ONAN/ONAF/ODAF stages and radiator/fan redundancy per OEM. Oil type: mineral or ester - processing procedure in docs pack.
  • Standards: IEEE C57 family (C57.12.00 / C57.12.90 test methods typical). IEC 60076 dual-path option for export/alternate OEM. Confirm utility / interconnect protection coordination separately.
  • Bushings: HV bushings 345 kV class; LV gen bushings ~18 kV. Bought-out HV bushings can co-gate assemble (Hitachi Ludvika GSBK/ARF 245-420 kV ~145 wk board - survey/OEM board, not Switchyard Supply quote). Spare kit plan required.
  • FAT: Indicative template - buyer/EPC witness FAT; protocol pack closes fat_passed VERIFY label (draw-gate). Deposit posting is eligibility companion only (draw_gating:false).

Full spec page

Delivery and compliance

  • IEEE C57
  • IEC
  • BABA interest
  • Interconnect ready
  • ISO 9001
  • UL

Compliance targets for the quotation. Exact standard parts are confirmed on the RFQ; badges are never presented as live factory certificates.

Order evidence spine

Every award closes these gates in sequence. The same spine appears on your quotation receipt and drives any financing review.

  1. Entity freezeBuyer-of-record / constructing taxpayer locked for any financing review.
  2. Slot confirmSupplier-stated production window, once evidence closes.
  3. FAT passedFactory acceptance test witnessed or document-reviewed.
  4. Serial recordedNameplate / serial captured against the PO line.
  5. ShippedUnit cleared the plant or port. Heavy-haul plan attached.
  6. Verified receiveSite receipt, condition, and serial check.
  7. Invoice approvedBuyer/EPC approved the OEM invoice (progress-pay path).

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