ABB / HitachiJJ-230-220-1
220 MVA 230/34.5 kV ABB/Hitachi Transformer
- Rating
- 220 MVA
- Voltage
- 230/34.5 kV
- Quantity
- 1 unit
- Evidence
- Manufacturer and ratings supplied by J&J Transformers LLC
Listing reviewed
Email for Specs, Price & AvailabilityTransformer types and project fit
Power Transformers for Sale and Project Sourcing
J&J Transformers LLC is a power transformer supplier serving utilities, data centers, EPCs and industrial projects nationwide. Browse GSU, substation, step-down and pad-mounted transformers by voltage and capacity. Need another configuration? Send Tommy Marco your kVA or MVA, voltages, quantity and required date. Each offered unit requires engineering review and written availability confirmation; subject to prior sale.
J&J Transformers LLC · Sugar Land, Texas · Serving projects nationwide
Tommy Marco · tommy@jjtransformers.com
- Product classes
- GSU · substation · pad-mounted
- Voltage classes
- 69 · 115 · 138 · 161 · 230 · 345 kV
- Availability
- Written reconfirmation required
- Review basis
- One-line + unit documents
Current transformer listings
Compare transformer opportunities
Start with the public ratings below. Call or email Tommy for current availability, pricing, photos and the technical package. Each unit needs project-specific engineering review and remains subject to prior sale.
Georgia TransformerJJ-GA447A
180 MVA 345/34.5 kV Georgia Transformer
- Rating
- 108/144/180 MVA; 37.8/50.4/63 MVA tertiary
- Voltage
- 345/34.5 kV with 12 kV buried-delta tertiary
- Quantity
- 1 documented unit - GA447A
- Evidence
- Serial-specific approval drawings and FAT report reviewed
Listing reviewed
Email for Specs, Price & AvailabilityKolektor ETRAJJ-138-110-5
Five 110 MVA 138/34.5 kV Kolektor ETRA GSUs
- Rating
- 66/88/110 MVA; 22/29.333/36.666 MVA tertiary
- Voltage
- 138/34.5 kV with 13.8 kV tertiary
- Quantity
- 5 units; matching unit packages available on request
- Evidence
- Five-unit opportunity confirmed by seller; rating plate and FAT package reviewed for one unit
Listing reviewed
Email for Specs, Price & AvailabilityFortune ElectricJJ-FORTUNE-230-167
167 MVA 230/34.5 kV Fortune Electric Transformer
- Rating
- 100/133/167 MVA; 35 MVA tertiary
- Voltage
- 230/34.5 kV with 13.3 kV buried-delta tertiary
- Quantity
- 1 unit
- Evidence
- Nameplate drawing reviewed
Listing reviewed
Email for Specs, Price & AvailabilityJump to a section
Source a transformer for your project
J&J supplies and sources large power transformers for U.S. projects. Start with a current listing or call Tommy with a requirement beyond the public inventory. GSU, substation, step-down and pad-mounted equipment follow different project specifications.
- Compare public MVA or kVA, voltage ratio, manufacturer and quantity.
- Call or email for current availability, price and the documents available for the specific unit.
- Have your project engineer review the proposed equipment before purchase.
- Large GSU transformer sourcing
- Substation transformers for sale and sourcing
- Bulk pad-mounted transformer orders
- 138/34.5 kV Transformers
- 230/34.5 kV Transformers
- 345/34.5 kV Transformers
| Transformer class | Primary duty | Decision inputs | Next page |
|---|---|---|---|
| Generator step-up (GSU) | Raises generator terminal voltage to a plant or interconnection bus | Generator MVA, voltage, PF/reactive range, high-side voltage, impedance, BIL, GCB arrangement | GSU transformer page |
| Substation / power | Changes voltage between transmission, subtransmission, or campus distribution levels | MVA, HV/LV/tertiary, LTC/DETC, BIL, impedance, losses, cooling, fault duty | Substation transformer page |
| Pad-mounted | Outdoor compartmental distribution close to a load block | kVA, primary/secondary, loop/radial, dead/live front, fusing, switch, fluid, enclosure | Pad-mounted transformer page |
| Dry-type | Indoor or outdoor distribution where the chosen insulation system and enclosure fit the site | kVA/MVA, voltage, BIL, enclosure, ventilation, temperature rise, sound, harmonics, AHJ requirements | Transformer comparison guide |
What makes a transformer a replacement candidate?
A matching voltage ratio is the starting point. Compare the existing transformer and proposed replacement on the same rating basis before reserving equipment. Send the nameplate or one-line by email when available; an initial conversation can begin with MVA, voltages and your required date.
| Compare | What the project team needs to confirm |
|---|---|
| Capacity and cooling | Required MVA at each cooling stage, ambient conditions and operating duty—not only the highest rating. |
| Winding connections | High, low and tertiary voltages; vector group, phase displacement, neutral and grounding requirements. |
| System performance | Impedance with its MVA base, tap range and controls, insulation levels, protection and fault-duty requirements. |
| Installation and schedule | Terminal arrangement, dimensions, accessories, inspection, loading, transport and the needed-on-site date. |
What we need to quote a transformer
Start with capacity, phase, frequency, high- and low-side voltages, duty, site, and needed-on-site date. To confirm a technical match, we may also need BIL, impedance, cooling, vector group, neutral and taps, fluid, losses, harmonics, site conditions, sound limits, and shipping constraints.
- Capacity: base kVA/MVA and every cooling-stage rating; do not substitute MW for MVA.
- Voltage: nominal and maximum-system values for each winding, plus generator terminal voltage where applicable.
- Insulation and system: BIL, grounding, vector or winding connection, phase displacement, impedance and its MVA/tap/temperature basis.
- Regulation: LTC or DETC range, steps, control requirements, and parallel-operation constraints.
- Site: minimum/maximum ambient, altitude, seismic, wind, sound, footprint, terminals, access, route, and installation state.
- Evidence: one-line, nameplate, outline, schematic, test report, losses, oil/fluid data, maintenance and preservation records when available.
Common questions
Written quotes and supporting records control unit-specific ratings, availability, condition, price, and delivery.
Can J&J source a transformer outside the listed inventory?
Yes. Email the required MVA or kVA, high- and low-side voltages, quantity and needed-on-site date. J&J reviews additional sourcing options for the requirement. Supply capability does not establish that a particular configuration is in stock.
Does a transformer listed at 230 kV necessarily have a 34.5 kV secondary?
No. The high-side voltage class does not identify the low-side or tertiary voltage. Use the exact-ratio pages or the listing's full voltage description, then request the records for that unit.
How do I get prices, photos and technical documents?
Call Tommy Marco at 346-276-9540 or email tommy@jjtransformers.com. Specifications, reports, photos and pricing are shared directly after contact, according to the records available for the proposed unit. Availability remains subject to prior sale and written confirmation.
Which transformer type should I request?
Choose by duty: GSU for generator export, substation/power transformer for network or campus voltage transformation, and pad-mounted for compartmental medium-voltage distribution near loads.
What ratings are required for a transformer quote?
Start with kVA/MVA, high and low voltage, phase, frequency, duty, site, and date; provide BIL, impedance, cooling, vector group, taps, site conditions, and documents when known.
Why are BIL and impedance important?
BIL supports insulation coordination. Impedance affects fault current, regulation, reactive behavior, protection, and parallel operation. Both must match the system studies and purchaser specification.