Product Overview
Powertran MHI-3K-208/160 3 KVA Isolation Transformer – Used, Continuity Verified
The Powertran MHI-3K-208/160 is a 3 kVA single-phase isolation transformer built in St. Louis, Missouri. It converts 208 VAC input to selectable secondary voltages of 140 V, 160 V, or 180 V at up to 15 amps. Its multi-tap output range is uncommon and well-suited for precision applications that require nonstandard or adjustable voltages.
The transformer has been checked for winding continuity only and visually inspected. No further electrical testing was performed. It shows normal marks from use and storage but remains structurally sound and complete. UL-listed (File E70562) and designed for industrial-grade isolation service.
Product Condition
Used and in good physical condition with surface marks from prior use and storage. Windings verified for continuity. Terminals and housing intact, showing no visible damage or corrosion.
Product Overview
Powertran’s MHI-3K series transformers were built for stability and electrical isolation in demanding settings. The 140/160/180 V output taps allow for voltage matching with legacy or sensitive equipment. Its 3 kVA rating supports substantial loads while providing line isolation that helps protect downstream systems from noise and transients.
Key Features
- Brand: Powertran Transformer Co., St. Louis MO USA
- Model: MHI-3K-208/160
- Power rating: 3 kVA single-phase
- Input voltage: 208 VAC, 60 Hz
- Selectable outputs: 140 V / 160 V / 180 V
- Output current: up to 15 A
- Type: Isolation transformer (galvanic separation)
- UL Listed – File E70562
- Continuity verified
- Heavy steel enclosure with accessible terminals
Applications
- Voltage isolation for lab and calibration benches
- Power source for equipment needing 140–180 V input
- Noise reduction in sensitive test systems
- Restoration or retrofit of older industrial machinery
- Engineering or prototyping setups
- Educational and training demonstrations
- Voltage regulation for specialty instrumentation
Frequently Asked Questions
What’s special about this transformer’s output?
It offers three selectable secondary voltages — 140 V, 160 V, and 180 V — which is rare and useful for tuning voltage to nonstandard equipment requirements.
Is it an isolation transformer?
Yes. The MHI-3K-208/160 provides full galvanic isolation between input and output for safety and reduced electrical noise.
Has it been fully tested under load?
No. Only continuity of the windings was checked to confirm that the coils are electrically intact. No powered load test was performed.
What is the transformer’s capacity?
3 kVA continuous duty, providing up to 15 amps on the secondary circuit.
Where was it made?
Manufactured by Powertran Transformer Co., St. Louis, Missouri, USA.
Built for clean, isolated power delivery, this U.S.-made Powertran transformer offers rare multi-tap flexibility — a solid foundation for specialized electrical projects and restorations.
