3 phase step down transformer 480 to 240
Your go-to solution for industrial voltage matching.
This 167 kVA 3-phase step-down transformer brings 480V down to 240V—ideal when your facility runs on high-voltage utility feeds, but your equipment or control gear requires 240V. Whether you’re powering HVAC loads, legacy machines, or panelboards, this unit delivers clean, reliable power with built-in isolation.
Shinenergy ships every unit fully labeled and tested, with a consistent wiring layout and UL-listed dry-type construction. Contractors and OEMs rely on this model to roll out across multiple sites with zero rewiring headaches—one part number, multiple deployments.
If you’re tired of mismatched specs, lead time delays, and inconsistent quality, this is the transformer built to scale with your operations.
Solar – Auxiliary Power Distribution
Location: Riverside, California, USA
In large-scale ground-mounted PV plants, the main AC output is typically 480V three-phase, but on-site systems like combiner monitoring units, ventilation fans, and data loggers require 240V. Shinenergy’s 167 kVA transformer was deployed across multiple inverter cabins, dedicated to these auxiliary loads.
“We used the same transformer spec at each cabin. It kept wiring simple and saved us serious time during commissioning.”
Energy Storage – Control Cabinet Isolation Location: Austin, Texas, USA
At a utility-scale energy storage site, each PCS skid delivered 480V, but its internal control cabinets required 240V. Shinenergy’s 167 kVA dry-type transformer was pre-mounted at the rear section of every skid, with ventilation ports tailored for sealed enclosure operation.
“We used to run into issues with overheating and mismatched form factors. This model dropped in perfectly—no more workarounds.”
Data Center – Facility Voltage Matching
Location: Frankfurt, Germany
During a retrofit in an aging data hall, engineers had to bridge the gap between a 480V main feed and 240V HVAC and BAS loads. The 167 kVA unit was installed in the floor-level power corridor, with Wye wiring for stable, phase-balanced output.
“The unit integrated seamlessly with our legacy layout—clean wiring, zero surprises during inspection.”
Wind & Hydrogen – Instrumentation Supply in R&D Labs
Location: Aarhus, Denmark
A wind-to-hydrogen R&D facility needed isolated 240V circuits for mass spectrometers, flow meters, and sensor arrays. The 480V backbone couldn’t directly support these sensitive devices. Shinenergy’s 167 kVA step-down unit was mounted on a side wall near the control lab, delivering clean, shielded power.
“We bought one, tested it—and ordered two more. The noise floor dropped, and we haven’t looked back.”
Medical – Imaging Facility Retrofit
Location: Chicago, Illinois, USA
A private hospital was upgrading diagnostic equipment in its imaging wing, many of which required 240V. The building’s feed was 480V. Shinenergy’s 167 kVA transformer was installed in the floor distribution room, powering CT prep areas and control rooms. Its quiet dry-type construction met hospital-grade performance requirements.
“We used the same configuration on three floors. No noise issues, and everything came online right on schedule.”
- 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) |
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Small Article – Step Down Transformers Aren’t One-Size-Fits-All
You might think stepping down voltage is simple—just match kVA and hook it up. But in practice, most transformer issues come from choosing the wrong configuration.
Let’s say you’re working with 480V Delta utility power. Some loads run on 240V, others on 208V. Your HVAC needs a center-tapped neutral, but your panelboard doesn’t. Suddenly, how to wire a 3 phase step down transformer isn’t just an installer’s problem—it’s your procurement risk.
At Shinenergy, we help contractors and integrators select the right unit—be it 480V to 240V, 380V to 220V, or 240V to 208V step down transformers. Whether you’re running one 5kVA unit in a lab or fifty 167kVA units across sites, consistency matters.
Each model comes pre-tested, schematics included, terminals labeled. Because when you’re in the field, you don’t need options—you need answers.
It reduces high-voltage three-phase power—commonly 480V or 380V—down to usable levels like 240V or 208V. You’ll find it behind panelboards, inside skids, or at the floor-level PDU layer, especially in buildings, factories, and power-intensive facilities.
It depends on your supply and load. A 480V to 240V 3 phase step down transformer is standard in North American factories, while 240V to 208V units are more common in retrofit or control panel environments where older systems need isolation and lower voltage.
Yes—many 3 phase step down transformers support single-phase loads across phase-to-phase or phase-to-neutral connections. For example, if you’re wiring lighting and HVAC off the same unit, just make sure the loading is balanced.
Wiring depends on whether you’re using a Delta-Delta, Delta-Wye, or Wye-Wye configuration. Use the wiring diagram provided with the transformer. Most OEMs (including Shinenergy) provide clear labels and downloadable 3 phase step down transformer wiring diagrams for every model.
Use your load (in amps), multiply by √3 and voltage, and divide by 1000 to get kVA. Add 20% headroom. A 5kVA 3 phase step down transformer might power a small control system, while a 167kVA unit supports motors, HVAC, or an entire building subpanel.
Yes. A step down transformer 380V to 220V 3 phase is common in Europe and Asia. Make sure the transformer you select supports your frequency (50/60Hz) and grounding requirements.
Nothing—the format varies by user, but all refer to the same supply level. Just ensure you’re specific about output, phase, and whether isolation is required.
These are also standard configurations. We stock 460 to 230 step down transformers 3 phase, and models like step-down transformer 240 to 208 3 phase for retrofit projects where legacy loads need compatibility.