General Purpose Isolation Transformer
Product Overview & Application
General Purpose Isolation transformers are used to lower distribution voltages (480 or 600V) to lower voltages (typically 120/240 or 208Y120) for power distribution within commercial or industrial buildings. These “two windings” transformers provide the electrical isolation required, and allow for short runs of high current, low voltage cables, reducing losses in the system, and reducing costs.General Purpose Isolation transformer are suitable for supplying the following type of loads
- General purpose lighting & electrical
- Motors (without VFD controllers)
- Resistive Heating
Features & Benefits
- Core and coil assemblies are mounted on neoprene isolation pads to reduce noise
- Bolted coil terminations suitable for copper or aluminum cables
- Front & back covers are easily removable for service
- NEMA 1 & 3R indoor (refer to catalogue for details) powder-coat drip-proof enclosure is standard. Weather shield kit is available for conversion to NEMA 3R outdoor.
- NEMA 3R, 4 & 4X enclosures are available. Stainless Steel or aluminum enclosures are optional.
- CSA Certified / UL listed
- Qualified to the seismic requirements
- Copper (Cu) or Aluminum (Al) windings
- Copper C&C grounding strap
- Robust packaging with top and side protection protects against shipping damage
- Accessible mounting flanges with front/back slotted mounting holes make installation easier
- 100% Factory tested for shorts and coil integrity, current and loss, voltage, impedance and noise.
- Clear, Comprehensive Documentation and labeling
- Core Manufactured with high quality grain oriented silicon steel
Product Specification
| Capacity | 3 to 333kVA Single Phase and 5 to 1,000kVA Three Phase |
| Voltage Class | 1.2kV |
| Cooling | Self Cooled (ANN / AN) |
| Frequency | 60Hz |
| Conductors | Copper (Cu) or Aluminum (Al) Windings |
| Insulation System | 220°C (150°C rise) (optional 115°C or 80°C rise available) |
| Impregnation | Polyester Resin Dipped and Baked |
| Efficiency |
Meets North American Energy Efficiency Standards:
|
| Primary Taps | Typically +/-2 x 2.5% taps (refer to dry type distribution transformer catalogue) |
| Sound Level | Meets NEMA ST-20 |
| Enclosure Type | Type 1 or 3R Indoor (refer to catalog) |
| Enclosure Finish | ANSI/ASA 61 Grey |
| Warranty | 12 Months (See Warranty and Limitations) |
| Quality System | ISO 9001:2015 Quality Management System |
| Certifications |
|
| Reference Standards |
|
| Optional Features |
|
