15kva 1 phase buck boost step up transformer
Small voltage shift, big system stability.
When your system runs at 208V or 240V but your equipment needs 240V or 277V, this 15 kVA buck boost transformer delivers the correction without overengineering your power infrastructure. It’s the go-to solution for HVAC units, lighting systems, motor loads, or UPS setups that just need a voltage nudge—not a full isolation unit.
Compact, dry-type, and easy to install, it’s designed for close-to-load applications. Most of our clients mount it directly inside control cabinets or near equipment panels—saving space, reducing drop, and simplifying field wiring.
For OEMs and EPCs, Shinenergy offers batch-ready builds with preset voltage configurations, UL-compliant terminals, and optional OEM labeling. Whether you need 20 units for a facility upgrade or 200 units for a nationwide HVAC rollout, we’re ready to scale with you.
Solar + Energy Control Systems
In many rooftop solar or battery inverter projects, the AC output may be slightly below the required load voltage—especially with long cable runs or small inverters. This transformer is typically installed right before the load distribution panel, stepping 208V up to 240V or 240V up to 277V.
✅ It protects inverter-side control systems and communication devices from undervoltage faults.
📍 Supplied in batches to a Texas-based EPC firm integrating rooftop solar for commercial retail stores.
HVAC & Building Automation
Commercial HVAC systems often face mismatches between utility supply (208V/240V) and unit-rated input (typically 240V or 277V). This buck boost transformer is mounted inside the HVAC control panel or junction box, ensuring stable startup and full load performance.
✅ It reduces nuisance tripping, startup lag, and low-voltage compressor errors.
📍 Used in over 200 hotel retrofits across Florida by a national mechanical contractor.
Industrial Equipment Control
In small machine shops and light industrial plants, control panels fed by 240V service often need precise voltage correction to match sensitive loads like VFDs, PLCs, or servo controllers. This transformer is placed inside the control cabinet, close to the point of use.
✅ It ensures stable operation without the cost or space of full-size isolation transformers.
📍 Shipped in volume to a Canadian OEM building standardized motor control centers.
IT Backup & UPS Systems
UPS systems often operate near threshold voltages. To improve efficiency and reduce bypass switching, this transformer is installed between the utility input and UPS bypass circuit, boosting voltage into the optimal range.
✅ It improves voltage tolerance and prolongs UPS lifespan, especially under fluctuating grid conditions.
📍 Deployed in modular UPS racks for a telecom operator rolling out 5G base stations.
Medical & Laboratory Equipment
Medical refrigerators, centrifuges, and sterilizers often require stable voltage to operate within safety margins. This transformer is mounted inside the utility compartment or under a mobile equipment rack, adjusting incoming 208V to 240V or 277V.
✅ It prevents underperformance or error states without adding bulky isolation units.
📍 Selected by a lab equipment distributor serving regional clinics across Southeast Asia.
- 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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Choosing the Right 1-Phase Buck Boost Step-Up Transformer
If your equipment is rated for 240V but your supply is 208V, or you’re running a 100V load from a 120V line, a 1 phase buck boost step up transformer can save your system from undervoltage issues. It’s a compact, cost-effective way to bring voltage into the safe zone—without replacing the whole electrical setup.
Many installers prefer prewired 1-phase buck boost step-up transformers, especially for tight projects or retrofits. For example, a 120V primary / 208V secondary configuration is often used to supply power to imported control boards. Meanwhile, setups like 208V primary / 240V secondary are common in HVAC, lighting, or data infrastructure—where even a small voltage drop can cause inefficiencies or trip sensitive equipment.
Compared to full-size isolation transformers, these units are more efficient and easier to mount—especially when you’re only looking for a voltage shift, not full electrical separation. That’s why contractors rely on buck boost transformers for fast, precise adjustments.
Shinenergy offers a full range of 1-phase buck/boost step-up transformers, with flexible voltage combinations, UL-compliant designs, and prewired options for 120V to 208V, 208V to 240V, or even 120V to 100V correction. Whether you’re specifying 5 units for a panel job or sourcing 100 for a rollout, we can support you.
It’s used to correct small voltage differences in single-phase systems—typically stepping up from 208V to 240V, or from 120V to 208V—to match the input voltage required by HVAC, lighting, or control equipment.
Buck-boost units are smaller, cheaper, lighter, and ideal for minor voltage adjustments (±10–30%). They don’t isolate the circuit but efficiently correct under- or overvoltage to improve equipment stability.
It raises the voltage from 208V to 240V—commonly needed when your power supply is slightly too low for equipment rated at 240V (like motors, HVAC compressors, or industrial control panels).
Yes. A prewired 1-phase buck boost transformer simplifies installation. Models like 120V primary / 208V secondary or 208V to 240V come factory-configured, reducing install time and wiring errors.
Yes—this is often used in industrial control circuits, where equipment sourced from Japan or Europe expects 100V input but is being powered by a U.S. 120V line. It ensures correct operation without overvoltage.