Unused surplus HICO three-phase, oil-immersed power transformer, 138/184/230 MVA ONAN/ONAF1/ONAF2, 345 kV high-voltage winding with on-load tap changer, YNyn0d1 wye-wye with delta tertiary. U.S.-manufactured. Delivered to storage on March 26, 2025; in storage in North America. One (1) unit, offered as-is, where-is, subject to prior sale.
Serious inquiries only. Pricing, serial number, storage location, nameplate, drawings, and the certified factory test report are released to qualified principals under an executed Non-Disclosure Agreement. CTG transacts principal-to-principal with the ownership of the end user or project; no brokers or intermediaries, and no commissions or finder's fees.
| Item No. | STT-06-0037 |
| Document No. | CTG-TECH-2026-STOCK-HICO230-01 |
| Manufacturer | HICO, United States of America |
| Type | Three-phase, oil-immersed power transformer, outdoor |
| Condition | Unused surplus; delivered to storage March 26, 2025 |
| Rating | 138 MVA ONAN / 184 MVA ONAF1 / 230 MVA ONAF2 |
| Temperature rise | 55 °C average winding / 55 °C maximum oil |
| High voltage (HV) | 345 kV |
| Secondary (XV) / tertiary voltage | Released to qualified parties under NDA |
| Vector group | YNyn0d1, wye-wye with delta tertiary |
| Tap changer | On-load tap changer (OLTC) on HV winding |
| Tap range | 345 kV ±16 x 0.625% |
| Impedance | 10.5% at 138 MVA, rated voltage, 85 °C reference |
| BIL, HV line / HV neutral | 1050 kV / 200 kV |
| BIL, XV line / XV neutral | 200 kV / 200 kV |
| Seismic | Moderate qualification level |
| Weights and dimensions | Per manufacturer's outline drawing, provided in the data package |
| Insulating fluid type and volume | Per manufacturer's outline drawing, provided in the data package |
| Bushings, CTs, accessories, ship-loose items | Per packing / ship-loose list, provided in the data package |
| Location | In storage, North America; site released to qualified parties under NDA |
| Quantity | One (1) unit |
Given the value, lead time, and strategic nature of this equipment, CTG responds only to inquiries that satisfy all of the following:
To request information, submit the following on company letterhead to Sales@CTGPowerSystems.com, referencing Document No. CTG-TECH-2026-STOCK-HICO230-01: legal entity name, address, and the authorized decision-maker; project name, location, owner, and intended application; project status, schedule, and required delivery date; and funding source and status.
The nameplate, outline / general-arrangement drawing, certified factory test report, OLTC and bushing / CT data, packing and ship-loose list, shipping impact-recorder data, and storage and preservation records are released to qualified principals under an executed NDA, to the extent available. To request the data package, an inspection, or further information, email Sales@CTGPowerSystems.com or call (813) 920-3500 and reference Item STT-06-0037 / Document No. CTG-TECH-2026-STOCK-HICO230-01.
Sales / Spec Sheet (PDF):
Download Sales / Spec Sheet – Item STT-06-0037 (PDF)
Informational only; this listing is an invitation to inquire, not an offer. Specifications are compiled from manufacturer and seller-supplied information, are believed reliable but are not warranted, and are subject to correction of errors and omissions. Items not stated are to be confirmed from the nameplate, certified test report, or outline drawing. Photographs are for general identification only and may not depict current condition or scope of supply. Manufacturer names and marks are used for identification only and belong to their respective owners; CTG is not affiliated with, endorsed by, or an authorized representative of the manufacturer.
CTG Power Systems Intnl., LLC
401 East Jackson St., Ste. 2340-F12
Tampa, Florida 33602 USA
Corp. Tel.: (813) 920-3500
Direct: (813) 535-7771
WhatsApp: (813) 918-0762
Fax: (941) 220-6612
Email: Sales@CTGPowerSystems.com
Website: www.CTGPowerSystems.com