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Three phase Autotransformer RA225C-B has common primary-secondary windings which are not insulated from each other, offers no interference or disturbance isolation between primary and secondary circuits. It is an economical solution but is not suitable for sensitive equipment with electronic and servo components but perfectly suitable for simple motor/heater single or balanced applications. NOTE: standard 3 phase autotransformer comes without neutral lead, but if you need, please request the neutral lead from "Optional Features" tab.
Preliminary General Drawing. (Dimension, inch).
*All information and images presented here is based on preliminary data or design and may be changed without prior notice.
Request Drawing Proof to confirm dimensions from Optional Feature tab, if it is critical.
Autotransformer RA225C-B Winding Schematics:
Full Specification
| Catalog No. | RA225C-B |
|---|---|
| Product Type | Autotransformer |
| Phase | Three |
| Power Rating | 225 kVA |
| Frequency, Hz | 60 |
| Vector Group | Wye(Y0) |
| Primary voltage | 240 Volt |
| Primary Max Current, Amps | 541.3A |
| Primary Terminals | H1-H2-H3 |
| Secondary Voltage | 208 Volt |
| Secondary Max Current, Amps | 624.5A |
| Secondary Terminals | X1-X2-X3 |
| Winding Conductor | Aluminum |
| Temperature Rise, °C | 150 |
| Insulation Class | 220 (R) |
| Insulation Level, (B.I.L), kVA | 10 |
| Efficiency at 35% Load, % | 96.89 |
| ANSI/IEEE Impedance, % | 3.5-4.5 |
| Sound Level, dB | 50 |
| Standards, Certifications, Compliances: | CSA Standard C22.2. No.47 Air Cooled Transformers (Dry Type)., CSA certified. File No. LR34493 UL Listed. File No.E108255., ISO9001 Quality Certification. |
| Enclosure Type | Nema 3R. General purpose indoor ventilated steel enclosure suitable for dry locations. Sprinkler Proof when angle between sprinkler and opening does not exceed 45° (IP14). FINISH - Polyester powder coat. |
| Weight, Lbs | 250.0 |
| Country of Manufacture | Canada |
