Harmonic Mitigating Transformer


Modern electrical systems are increasingly challenged by nonlinear loads such as variable frequency drives (VFDs), UPS systems, and IT or automation equipment. These devices generate harmonic distortion that can cause overheating, voltage imbalance, and efficiency losses throughout the power network. Our Harmonic Mitigating Transformers are designed to address these issues by delivering cleaner power, balanced loading, and improved energy efficiency for mission-critical and harmonic-rich environments.

Advanced Engineering Design for Superior Harmonic Performance

Through phase shifting on the secondary windings, low zero-sequence impedance is created. The low zero-sequence impedance restricts the zero-sequence harmonic currents (3rd, 9th, 15th, etc.) to circulate within the secondary windings, preventing them from entering the primary windings. H line transformers with various phase-shifting configurations can mitigate 5th, 7th, and higher-order harmonics at the common bus supplying all the transformers.

Energy-Efficient Design for Nonlinear Environments

Designed for 600V class and below, our HMTs are ideal for facilities with severe nonlinear loads, including:

  • Data centers and telecom hubs

  • Industrial automation systems

  • Hospitals and laboratories

  • Broadcast and media centers

  • Financial and computing facilities

  • Casinos

Proven Results — Real Efficiency in Action

Our engineering approach is built on decades of field-proven expertise in harmonic mitigation. Each HMT is developed to meet stringent industry standards and deliver measurable benefits, including:

  • Lower power and cooling costs

  • Reduced transformer and conductor heating

  • Lower THDv (typically below 5%) at nonlinear loads

  • Improved system compatibility with sensitive electronic equipment

  • Enhanced system stability and balanced phase loading

  • Greater energy efficiency and ROI

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