225 kva 3 phase variable transformer
The 225 kVA 3-phase variable transformer is built for systems that demand more than fixed output. Whether you’re adjusting motor input, simulating voltage drops, or running test benches, this unit gives you full control across all three phases.
With dry-type construction, stable regulation, and efficient cooling, it handles heavy loads and long hours without compromise. Manual or servo adjustment options are available to match your setup.
Manufactured by Shinenergy in an ISO-certified facility, this transformer meets UL and CE standards and supports custom specs. It’s trusted by industrial users, test labs, and equipment integrators worldwide.
Solar Power System
In solar inverter test lines, this transformer is typically installed in the AC output simulation section, where engineers need to adjust input voltage across a wide range to test inverter behavior under variable grid conditions.
It allows real-time control of 3-phase voltage between 0–480V, helping simulate power fluctuations, harmonics, and voltage imbalance.
📍 Used by a PV inverter manufacturer in Jiangsu, China, to perform accelerated grid-tolerance testing during R&D.
Energy Storage System
Within battery PCS (Power Conversion System) validation platforms, this unit is connected between the simulated grid interface and the PCS AC input, enabling engineers to mimic real-world grid instabilities.
It helps validate PCS response under undervoltage, overvoltage, and phase-shifted conditions—all essential before field deployment.
📍 Deployed in a third-party battery testing lab in South Korea, supporting 24/7 automatic profile cycling.
Data Centers
Though rarely used in day-to-day operation, variable transformers are essential in equipment qualification labs, where PDUs, UPS units, and power filters must be tested under fluctuating voltage loads.
The 225 kVA rating is ideal for testing high-capacity power modules without switching full utility power, keeping test risks controlled.
📍 Integrated into a U.S. colocation provider’s in-house certification lab to support Tier 3 equipment pre-deployment validation.
Wind-to-Hydrogen
In green hydrogen pilot plants, this transformer is often placed upstream of rectifier cabinets or converter blocks, to simulate unstable grid supply or wind intermittency.
It enables researchers to control 3-phase voltage feeding into electrolyzer power systems, observing how voltage swing affects hydrogen production rate and safety thresholds.
📍 Used in a university-affiliated wind-hydrogen hybrid plant in Inner Mongolia during controlled grid-drop experiments.
Medical Equipment Testing
For OEMs producing large-scale imaging systems (MRI, CT), this transformer is installed in their internal compliance lab, supplying variable 3-phase voltage to test how equipment reacts to power anomalies.
It helps simulate hospital environments with voltage sags, recoveries, and phase drops—without risking live hospital operation.
📍 Chosen by a German medical device maker to test compliance with IEC 60601 voltage tolerance standards.
- 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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Why 3 Phase Variable Transformers Are Essential for Testing and Control
In industrial and testing environments, not every system works well with fixed voltage. That’s where a 3 phase variable transformer comes in—allowing real-time voltage control across all three lines. Whether you’re testing motors, inverters, or simulating grid conditions, having full command over your power source is key.
Also referred to as a 3 phase variable voltage transformer, this equipment lets engineers fine-tune output levels from 0V to full rated voltage. It’s widely used in power labs, manufacturing test benches, and research centers dealing with equipment qualification, aging tests, or voltage fluctuation tolerance.
At Shinenergy, we manufacture dry-type 3-phase variable transformers ranging from 30 kVA to 500 kVA, available in both manual and servo-controlled versions. Our clients rely on them for reliable, stable output and repeatable results—especially in high-sensitivity applications like PCS and UPS validation.
A 3 phase variable transformer is used to adjust output voltage across all three phases. It’s commonly deployed in test benches, industrial control setups, and lab environments where precise voltage control is critical.
Not really. Both terms refer to the same equipment. “Variable voltage” emphasizes the output adjustment capability, but both describe transformers that provide controlled, adjustable 3-phase AC power.
Yes. These transformers are ideal for simulating brownouts, overvoltage, and imbalance conditions. They’re widely used in inverter testing, motor soft-start testing, and PCS validation.
Both. You can select manual (knob/handwheel) control for lab setups or automated servo-control for repeatable test sequences. Shinenergy supports both configurations, including PLC interface options.