Power and GSU transformers to 1,120 MVA / 750 kV in 16–20 weeks. Pad-mounted and dry-type distribution transformers in ~8 weeks. Complete mobile substations on truck, container, or E-House — built in ~20 weeks and deployed in hours-to-days on arrival. 800 VDC-native Solid State Transformers for AI data centers. Built on IEC 60076 / IEEE C57 / AS 60076 / GOST certified lines, with short-circuit and FR3 natural-ester options — shipping to US, Canadian, Australian, and European utilities.
Tarxon's role is engineering, procurement, solution architecture, system integration, and field execution. The fleet below is what our manufacturing partner network has already deployed across North America.
Up to 345 kV · GSU & main step-up
Pad-mount · Dry-type · Isolation
Across NA AIDC, utility & industrial sites
IEEE C57 / C37 · UL Listed · ISO 9001
Counts reflect lines we have engineered, witnessed, and shipped through partner factories to NA sites.
345 / 34.5 kV main step-down bank — engineered and integrated by Tarxon, manufactured through our power-transformer partner.
80% energized · First set arrived within 4 months
Balance scheduled to energize by end-2026.
A 1.5 GW step-down bank delivered against a market quoting 60+ weeks for a single unit — through coordinated partner production and Tarxon-led integration.
Photo: 345 kV / 150 MVA unit during factory FAT, partner facility.
Top-tier production lines we draw on for new Tarxon projects. Voltage, capacity, and unit counts as deployed across North America.
Project list is partial. Additional NDA-protected references available on request.
Large-capacity oil-immersed power transformers built on the same production lines that deliver to US, Australian, and European utilities — ISO 9001/14001/45001/50001 certified plants, short-circuit-tested to IEC 60076 and IEEE C57.12.00. Benchmark units include 150 MVA / 345 kV uniform-insulation OLTC (525 kV AC withstand, 1,300 kV BIL) and 360 MVA / 330 kV high-efficiency autotransformers for renewable integration. Available in mineral oil and K-class natural ester (FR3) fluid with carbon emissions 1/64 of mineral oil and 98% biodegradability. Typical delivery 16–20 weeks — compared with 60+ weeks on the open market.
Tamper-resistant, ground-level transformers for underground distribution, data center campus power, commercial and mixed-use developments, and utility-scale solar collector circuits. Built to IEEE C57.12.28 (painting and coating) and UL 1561 with single-phase ratings to 250 kVA and three-phase ratings to 10 MVA at 34.5–66 kV. Loop-feed (LBOR-VFI compatible) and radial-feed arrangements; dead-front and live-front bushings; mineral oil or FR3 ester fluid. The fastest-to-site transformer class — typical delivery ~8 weeks.
Cast-resin and VPI dry-type transformers for indoor, offshore, and fire-sensitive installations. Built on the production line that produced China’s first 110 kV three-phase epoxy resin cast dry-type power transformer, with CE, UL, ASTA (E3/C3/F1 climate-environment-fire class), DEKRA, and salt-spray / anti-seismic certifications. Ratings run from 15 kVA distribution units up to 25 MVA / 110 kV power-class dry transformers — with dedicated variants for offshore wind nacelles, hydrogen electrolysis rectifier duty (12-pulse, 7.5 MVA), and data center white space.
Generator step-up transformers matched to gas turbines, steam turbines, reciprocating engines, and inverter-based renewables. Representative builds include a 360 MVA / 330 kV Tier-II-efficient OLTC autotransformer and 5 MW / 35 kV PV step-up blocks that integrate PCS, transformer, MV ring-main unit, and LV distribution in a single skid. Engineered for fast-start duty cycles, unbalanced harmonic load from IGBT inverters, and the demanding thermal profiles of peaker and combined-cycle plants. Typical delivery 16–20 weeks.
A complete substation on wheels, in a container, or in a factory-assembled E-House. Power transformer, HV switching (GIS or AIS), MV distribution, protection, control, and SCADA factory-integrated and tested to IEC 62271-202 / IEEE C37.121. Because every unit is engineered to North American utility specifications — including layout review, IEEE/UL approvals, and factory acceptance testing — typical build time is ~20 weeks from PO to ship. The payoff comes on site: with everything pre-integrated and factory-tested, on-truck units energize within hours of arrival, and containerized / E-House platforms commission in days rather than the weeks-to-months a stick-built substation would require. Use as an interim GSU for mobile generator arrays, as a bridge substation during utility outage or transformer rebuild, or as a permanent relocatable substation.
Ten containerized gas gensets generate at 10.5 kV. An 80 MVA / 138 kV mobile step-up substation connects them to the utility tie — built in ~20 weeks, energized within hours of arriving on site, then redeployed when the permanent GSU arrives.
Drive to a flooded or fire-damaged utility substation. Bypass the damaged bus with a trailer-mounted substation; restore load within 24 hours while FEMA, crews, and long-lead replacement equipment mobilize.
Replace aging 25- to 40-year-old transformers and GIS without taking the substation off-line. Mobile unit supplies N\u22121 capacity during each phase of the rebuild.
Mining, oil & gas, construction camps, and renewable-energy commissioning. Containerized or trailer-mounted substations step up generator voltage to utility tie-in — and leave when the project finishes.
Power-electronic solid state transformers that convert 10 kV AC directly to 240 / 336 / 750 / 800 / 1000 VDC, eliminating two conversion stages in AI data center distribution — including NVIDIA’s 800V HVDC Native standard. Factory-prefabricated cabinets at 840 / 1,680 / 2,520 / 3,360 kVA with busbar interconnect, N+3 internal redundancy, input power factor ≥ 0.99, input current THD ≤ 3%, and system efficiency ≥ 98% (AC–DC) / ≥ 97% (AC–AC). Single cabinet up to 960 kW — 60% smaller footprint than conventional MV–LV–rectifier chains.
IEEE C57 (US), IEC 60076 (international), AS 60076 (Australia), GOST (CIS), and EN / CE (EU). Plant-level ISO 9001 / 14001 / 45001 / 50001 / 28000, third-party ESG green factory audit, CNAS-accredited labs, and STRI-compared 10 kV test systems. UL listings on pad-mounted and dry-type lines; short-circuit withstand type-test reports issued with every power-class order; full FAT documentation on every mobile substation.
Send us your one-line diagram, load spec, or existing nameplate. Our engineers will recommend the right type, sizing, cooling class, fluid selection, and tap configuration within 24 hours.
Preliminary sizing & budget pricing back in 24 hours. One-line diagram or rough specs is enough — we'll fill in the rest.