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
Request Specs, Price & AvailabilityAI · HPC · colocation · bitcoin mining
Transformers and Power Equipment for Data Centers
J&J Transformers LLC helps AI data centers, HPC campuses and bitcoin mining operators source substation and pad-mounted transformers, generators and turbines nationwide. Send Tommy Marco your one-line, kVA or MVA per transformer, project MW, voltages, quantity and required date. Your requirement does not have to match a public listing. Each candidate requires written availability confirmation and engineering review for the actual project duty.
J&J Transformers LLC · Sugar Land, Texas · Serving projects nationwide
For hyperscale, colocation, owner, EPC, and procurement teams working against a power-on date. Send MVA or MW, voltage levels, quantity, site, and needed-on-site date.
Tommy Marco · tommy@jjtransformers.com
- Utility path
- Interconnection → campus MV → load blocks
- Onsite path
- Prime mover → generator → GSU / MV
- Planning scale
- 10 / 40 / 100 MW scenarios
- Quote basis
- One-line + schedule + site
Current transformer listings
Transformers available for review
Each listing shows its public ratings and the records reviewed. Ask for photos or a technical package after project qualification. Availability must be reconfirmed in writing 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
Request 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
Request 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
Request Specs, Price & AvailabilityJump to a section
What electrical equipment does a data center campus require?
The power path may include utility interconnection transformers, campus substations, medium-voltage switchgear and feeders, pad-mounted or dry-type load-block transformers, standby generators, onsite prime generation, GSUs, auxiliary transformers, paralleling controls, protection, metering, and black-start equipment. The exact package comes from the one-line and operating philosophy.
- Utility-side and campus substation transformers
- 1,500–4,000 kVA pad-mounted transformer sourcing
- Diesel and natural-gas generator requirements
- Gas and steam turbine sourcing
| Power-path stage | Typical equipment | Key inputs |
|---|---|---|
| Grid interconnection | Utility yard, substation power transformer, breakers, relays, metering | POI voltage, utility criteria, MVA, fault duty, BIL, impedance, protection |
| Onsite generation | Engines or turbines, electrical generators, GSUs, auxiliaries, controls | Net MW, duty, fuel, emissions, generator MVA/voltage, operating mode |
| Campus MV | MV switchgear, bus, feeders, sectionalizing and grounding | 13.8/34.5 kV or project voltage, topology, N/N+1/2N, fault/arc studies |
| Load blocks | Pad-mounted or dry-type transformers and LV gear | kVA, secondary voltage, harmonics, impedance, efficiency, sound, fire/location |
| Continuity | Standby generators, UPS, storage, black-start and transfer controls | Critical load, ride-through, start sequence, runtime, redundancy and maintenance |
Can J&J source transformers for bitcoin mining and HPC sites?
Yes. Bitcoin farms, high-performance computing campuses and AI infrastructure developers can send transformer and onsite-generation requirements to J&J. Include initial and planned MW, kVA per load block, service and equipment voltages, quantity, project state and required date. Supply the actual load data and one-line so the project engineer can review harmonics, cooling, grounding and operating duty; computing projects do not all use the same electrical design.
How do grid interconnection and behind-the-meter generation differ?
A utility-interconnected campus receives power through an approved point of interconnection and campus transformation. Behind-the-meter generation produces power on the customer side of the revenue meter and may operate grid-parallel, islanded, or in another approved mode. Many campuses use both; neither path eliminates permitting, protection, reliability, fuel, or study work.
| Topic | Grid interconnection | Behind the meter |
|---|---|---|
| Capacity source | Utility or market system | Customer-side engines, turbines or other generation |
| Transformer focus | Substation/interconnection and campus distribution | Generator step-up, auxiliaries and campus distribution |
| Approvals | Utility/interconnection, studies, land and construction | Air, fuel, AHJ, operating mode, interconnection if parallel, construction |
| Schedule risk | Network upgrades, transformer/breaker supply, utility milestones | Equipment completeness, permits, gas/fuel, BOP, commissioning |
Common questions
Written quotes and supporting records control unit-specific ratings, availability, condition, price, and delivery.
What electrical equipment does a data center campus require?
Requirements may include interconnection and distribution transformers, switchgear, generators, controls, protection, UPS/storage and onsite-generation equipment.
Can one company quote transformers and generation equipment?
J&J accepts coordinated package RFQs while identifying each equipment source, technical interface, commercial boundary and warranty source.
What is speed to power for a data center?
It is the project’s complete path to permitted, commissioned, reliable electrical capacity by the required date.
How are transformer sizes selected?
From the approved load basis, power factor, redundancy, block size, harmonics, growth, losses, impedance, fault duty, site and utility requirements.
Can onsite generation operate before utility service arrives?
Potentially, after permits, fuel, emissions, operating mode, protection, distribution, reliability, commissioning and interconnection issues are resolved.
What is N, N+1 or 2N redundancy?
They describe capacity/topology philosophies. The owner and engineer must define the exact failure and maintenance cases.