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Drive Isolation Transformers
Engineered to provide electrical isolation, harmonic mitigation, and transient protection for variable frequency drive (VFD) applications.
Drive Isolation Transformers are engineered to provide electrical isolation, harmonic mitigation, and transient protection for variable frequency drive (VFD) applications. These transformers supply clean and balanced power to the drive while protecting both upstream and downstream equipment from voltage disturbances, system transients, and harmonic distortion.
Each transformer is designed with robust magnetic and electrical characteristics to handle the unique stresses associated with VFD operation, including non-linear loads and elevated harmonic content. The optimized winding configuration and low-leakage reactance design minimize voltage distortion and improve drive performance, while high thermal capacity ensures long life under continuous and demanding operating conditions.
Constructed with premium electrical steel, precision-wound conductors, and durable insulation systems, these Drive Isolation Transformers are built for reliability and longevity. Standard and custom designs are available across a wide range of kVA ratings and voltage combinations, all tested to meet or exceed CSA and UL standards — delivering proven protection and performance in every installation.
| Capacity | 5 to 900 kVA |
| Voltage Class | 1.2kV |
| Cooling | Air Cooled (ANN / AN) |
| Frequency | 60Hz (50/60Hz Optional) |
| Conductors | Copper (Cu) or Aluminum (Al) Windings |
| Temperature Rise | 150°C rise (115°C & 80°C Optional) |
| Insulation System | 220°C |
| Impregnation | Polyester Resin Dipped and Baked |
| Efficiency | Meets North American Energy Efficiency Standards:
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| K-Factor | Suitable for non-sinusoidal current load with a K-factor not to exceed 4 (K9, K13, K20 Optional) |
| 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 catalogue) |
| Enclosure Finish | ANSI/ASA 61 Grey |
| Warranty | 12 Months |
| Quality System | ISO 9001:2015 Quality Management System |
| Certifications |
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| Reference Standards |
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| Optional Features & Accessories |
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