Single-Phase Transformer
0.5–20kVA240V AC Input
Adjustable 0–300V AC Output
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VT Series Variable Voltage Transformer (1-Phase 0.5–20kVA / 3-Phase 9–100kVA)
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Variable Voltage Transformer
VT Series Single-Phase and Three-Phase Variable Voltage Transformer
The VT Series Variable Voltage Transformer provides continuously adjustable AC output voltage, with single-phase models rated from 0.5kVA to 20kVA and three-phase models rated from 9kVA to 100kVA.
The VT Series is a range of variable voltage transformers designed to provide continuously adjustable output voltage. The original brochure identifies both single-phase and three-phase configurations.
Single-phase models use a 240V input with an adjustable 0–300V output. Three-phase models use a 415V input with an adjustable 0–500V output. Available rated capacities range from 0.5kVA to 20kVA for single-phase units and 9kVA to 100kVA for three-phase units.
The transformers use copper windings, a carbon brush contact arrangement and a strip-wound oriented silicon steel core. The manufacturer describes the design as providing simple operation and continuous voltage adjustment.
AVAILABLE CONFIGURATIONS
Single-Phase and Three-Phase Voltage Options
Three-Phase Transformer
9–100kVA415V AC Input
Adjustable 0–500V AC Output
PRODUCT DESIGN
Transformer Construction and Voltage Adjustment
The original technical brochure describes the following construction details.
Continuous Voltage Adjustment
The transformer provides continuously adjustable output voltage using a carbon brush contact arrangement.
Copper Winding
Copper wire is wound around the transformer core using precision winding equipment. The sliding contact track is smoothed for the carbon brush.
Silicon Steel Core
The core is constructed from strip-wound oriented silicon steel. An insulation support separates the winding from the core and helps prevent coil movement.
TECHNICAL DETAILS
VT1 Series — Single-Phase Technical Specifications
All nine published VT1 models have a 240V input and an adjustable 0–300V output.
| Model | Capacity | Input | Output | Max. Current |
|---|---|---|---|---|
| VT1-0.5K | 0.5kVA | 240V | 0–300V | 2A |
| VT1-1K | 1kVA | 240V | 0–300V | 4.1A |
| VT1-2K | 2kVA | 240V | 0–300V | 8.3A |
| VT1-3K | 3kVA | 240V | 0–300V | 12.5A |
| VT1-5K | 5kVA | 240V | 0–300V | 20.8A |
| VT1-7K | 7kVA | 240V | 0–300V | 29.2A |
| VT1-10K | 10kVA | 240V | 0–300V | 41.6A |
| VT1-15K | 15kVA | 240V | 0–300V | 60A |
| VT1-20K | 20kVA | 240V | 0–300V | 83.3A |
TECHNICAL DETAILS
VT3 Series — Three-Phase Technical Specifications
All nine published VT3 models have a 415V input and an adjustable 0–500V output.
| Model | Capacity | Input | Output | Max. Current |
|---|---|---|---|---|
| VT3-9K | 9kVA | 415V | 0–500V | 12.5A |
| VT3-12K | 12kVA | 415V | 0–500V | 16.7A |
| VT3-15K | 15kVA | 415V | 0–500V | 20.8A |
| VT3-20K | 20kVA | 415V | 0–500V | 27.8A |
| VT3-30K | 30kVA | 415V | 0–500V | 41.7A |
| VT3-40K | 40kVA | 415V | 0–500V | 55.6A |
| VT3-60K | 60kVA | 415V | 0–500V | 83.4A |
| VT3-80K | 80kVA | 415V | 0–500V | 111.3A |
| VT3-100K | 100kVA | 415V | 0–500V | 139.1A |
Model ratings are reproduced from the original VT Series brochure. Product specifications may change without prior notice.
APPLICATIONS
Applications Listed in the Brochure
Production Line Systems
Industrial Applications
Medical Applications
Experimental Laboratories
ORIGINAL TECHNICAL DOCUMENTATION
VT Series Original Brochure
The two original brochure images show the product overview, construction information and complete single-phase and three-phase model specifications.
PRODUCT ENQUIRY
Enquire About the VT Series Transformer
Contact us for further information about the available VT1 and VT3 models, rated capacities and technical specifications.
Inquiry - VT Series Variable Voltage Transformer (1-Phase 0.5–20kVA / 3-Phase 9–100kVA)