3 phase boost transformer
If your 3-phase line is running low—say 208V or 380V—but your equipment needs 240V or 400V, we build the transformer that gets you there. No converters, no panel redesigns. Just stable output voltage from a clean dry-type build.
We size every 3 phase boost transformer to your voltage shift, install location, and cabling needs. Whether you want copper or aluminum windings, top or side terminals, or UL-listed builds—we match what you spec, not what we have on the shelf.
Customers use these in HVAC panels, CNC machines, export skids, and backup systems. Every unit comes tested, labeled, and shipped with a wiring diagram your electrician won’t have to squint at.
Photovoltaics – Nevada, USA
A solar EPC in Nevada was running string inverters with a 208V three-phase output, but their EV charging modules downstream were designed for 240V. They’d already seen undervoltage alarms and asked: “Can we bump this up without changing the inverters?”
We delivered a 3 phase boost transformer, dry-type, 208V to 240V, with top-mount terminals and outdoor-rated enclosure. They mounted it right on the post-inverter rack, feeding the charger bank with no internal mods.
Installer called back: “No more red lights. Voltage sits dead on 240.”
Energy Storage – North Carolina, USA
A microgrid integrator in North Carolina was using a PCS system that exported 380V three-phase, but the customer site needed 400V to match HVAC and elevator panels. Rewriting the PCS firmware wasn’t an option.
We built a 3 phase boost transformer, 380V to 400V, dry-type, aluminum wound, side exit terminals to match their MCC rack. The unit landed in their combiner room and was live within four hours.
Project PM wrote: “Fastest fix on the project—and no firmware headaches.”
Data Center – Dublin, Ireland
A modular data center expansion in Dublin had backup generators delivering 208V three-phase, but several PDUs required 240V for internal conversion. They needed a compact fix, not a rebuild.
We provided a 3 phase boost transformer, 208V to 240V, low-profile dry-type with Class H insulation, fully enclosed and front-access wired. It slotted into a floor cable tray beside their UPS rack.
Site engineer noted: “Plugged in, powered up, didn’t touch the upstream bus.”
Wind-to-Hydrogen – Texas, USA
A hybrid wind-hydrogen pilot in West Texas used small-scale turbines that generated 380V three-phase. Their electrolyzer module was rated at 400V and tripped when the voltage dropped under load.
We delivered a 3 phase boost transformer, 380 to 400V, epoxy-sealed, compact format with bottom cable plate. It sat inline between the turbine output and the process controller.
Field tech later told us: “Never thought 20 volts could save us this much downtime.”
Medical – São Paulo, Brazil
A diagnostic lab in São Paulo was running imported analyzers that expected 240V single-phase from a 3-phase feed. Their building had 208V three-phase service, and line loss was affecting reliability.
We supplied a 3 phase boost transformer, 208V to 240V, dry-type, low-noise, mounted inside the floor utility shaft with side terminals and vibration pads.
Lab manager said: “We don’t touch it anymore. It just holds steady.”
- Data Sheet
- Three Phase Transformer Catalog
- Shinenergy Product Catalog
| Certification | UL |
| Phase | Three Phase |
| Rated capacity | UP TO 3000KVA Customized |
| Frequency | 50/60Hz |
| Work Efficiency | UP TO 99.05% |
| Protection Class | IP00/IP20/IP23/IP40/IP44/IP54 |
| Winding Material | Copper or Aluminum |
| Insulation level | Class F (155°C) Class H (180°C) Class N (200°C) Class R (220°C) |
| Designed lifetime | ≥30 years |
| Cooling Method | Air Cooling |
| Wiring Configuration | Δ-Y (Delta-Star)/Y-Y (Star-Star)/Δ-Δ (Delta-Delta)/Y-Δ (Star-Delta) /Δ-Z (Delta-Zigzag)/ Y-Z (Star-Zigzag) |
| Noise | ≤35 dB (1 meter) |
Three Phase Transformer Catalog | |
| 500 kva 3 phase to single phase transformer | 225 kva single phase step up transformer |
| 500 kva single phase to 3 phase transformer | 200kva transformer single phase to 3 phase |
| 500 kva single phase to three phase transformer | 1000 kva 3 phase buck boost transformer |
| 1000 kva 1 phase to 3 phase transformer | 1000 kva three phase to single phase transformer |
| 750 kva transformer 3 phase boost transformer | 200kva 3 phase 208 to 480 transformer |
| 200kva 1 phase buck boost step up transformer | 167 kva 3 phase step up transformer 240 to 480 |
| 150 kva 480 3 phase to 120 single phase transformer | 100 kva 480v to 220v 3 phase transformer |
| 100 kva step up transformer 220 to 440 3 phase | 167 kva 3 phase step down transformer 240 to 208 |
| 167 kva 3 phase step up transformer 208 to 480 | 150 kva 3 phase transformers for sale |
| 100 kva step up transformer 220 to 440 3 phase | 100 kva step down transformer 480 to 240 3 phase |
Voltage instability? That’s the kind of problem we solve every day.
We often hear from customers who need 240V three-phase power, but their site only provides 208V. It sounds like a minor mismatch, but it causes major headaches: control panels trip, drives underperform, and in some cases, components overheat or fail.
That’s exactly where a 3-phase buck-boost transformer (208V to 240V) comes in. It’s not a full-size isolation transformer—it’s a compact, efficient voltage adjustment unit, engineered to do one job: bridge small voltage gaps with minimal space, cost, and installation effort.
How We Build Confidence Into Every Unit
First, we understand that our customers aren’t just looking for a part—they’re managing real production pressure. Whether you’re retrofitting a tight panel or shipping an OEM build overseas, you need equipment that fits, functions, and avoids risk.
So we:
Label every terminal clearly and include wiring diagrams;
Offer multiple configurations (208 to 230V, 208 to 240V, etc.);
Customize tap connections for wye, delta, or open delta systems;
Help you size the transformer based on real load current—not guesswork.
Second, we don’t push generic inventory. Every unit we ship is matched to your voltage range, load type, and installation method. That ensures efficiency, thermal safety, and long-term durability.
It’s More Than Just a Transformer
We often win our first-time customers not by quoting fast, but by asking smart questions:
“Is your whole building running at 208V, or is it just one machine underpowered?”
Other suppliers may sell you a part—we offer a solution.
With every order, we include:
Load sizing guidance;
Wire gauge recommendations;
A short compatibility assessment (is buck-boost the right call, or do you need isolation?).
Yes, if your CNC controls require 240V but your facility only has 208V 3-phase, a 208V to 240V buck boost transformer is the cleanest fix. Just confirm the full load amps—we’ll match the unit for you.
A boost transformer only increases voltage. A buck boost does both—raise or lower—making it more flexible for mixed-load systems, especially in export builds or OEM panels.
That’s not a step-up range buck boost covers. It’s too large. Buck boost is designed for minor voltage correction—typically under 30%. For 208 to 480V, you’ll need an isolation or dry-type step-up transformer.
If ventilation is okay and the ambient stays under 40°C, yes. We also offer compact open-style units that slide into panel builds without violating clearance codes.
No functional difference—just search wording. Both refer to the same product used to stabilize line voltage in commercial and industrial systems.
You’ll typically wire the coils in an open delta or wye-wye depending on load balance. We pre-label terminals and include diagrams for every configuration you’ll need.
It’s common in US commercial properties. HVAC units, lighting systems, or machines from other countries may expect 240V. A buck boost unit bridges that gap without a full-size transformer.