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MTZ / MTHZ- Marcus Harmonic Mitigating (Harmonic Sweeper) Distribution Transformer

In-stock & available for expedited delivery

**See drop-down menu for full range of kVA, Input/Output voltage options.

Where to use Harmonic Sweeper™ (stand alone or in parallel with Marcus MT/MTH models)

In commercial, institutional and industrial buildings

With UPS or special generator groups

Industrial rectifier

PWM drives for elevators

UV filtering lights

Electronic ballast lighting

Click on kVA listings below for specifications:

15 KVA30 KVA45 KVA75 KVA112.5 KVA150 KVA225 KVA


Product overview:

  • High efficiency harmonic cancellation transformer
  • Treats 3rd, 5th, 7th, 9th harmonic currents close to the source
  • Available in either 30˚or 0˚phase displacement
  • Facilitates the application of the standard IEEE 519
  • Validated performance in the laboratory and on site (See Performance and Field Chart PDF Below)
  • DOE 2016 and NRCAN2019 Energy Efficiency compliant
  • Competitive price and compact design


  • Product code: MTZ / MTZH
  • Power range: 15,30,45,75,112.5,150 & 225 kva
  • Standard K factor, and dual static shield construction
  • Standard temperature rise 150° C
  • Primary: 3-phase, 3 wires: 208, 400, 480, 600
  • Secondary: 3-phase, 4 wires: 208/120, 380/220. 480/277, 600/347
  • Phase shift: 0° & 30° phase shift

Technical benefits and performance of Harmonic Sweeper™:

  • Cancellation of 5th and 7th harmonics paralleled with a 30˚ phase or 0˚ phase shift transformer
  • 3rd harmonic cancellation in secondary with reduced voltage distortion
  • Low no load losses due to WATT+ technology (wound cores)
  • Low impedance and good voltage regulation
  • 14% less supplementary losses because of the absence of 3rd harmonic in the primary winding
  • Stiff neutral to prevent "floating neutral" under unbalanced load conditions.
  • Efficiency standard NRCAN2019 and DOE 2016 compliant
  • K-factor transformer features low core saturation, electrostatic shielding and heavy-duty coils
  • 100% copper windings

MTZ/MTZH- Marcus Harmonic Mitigating (Harmonic Sweeper) Distribution Transformer
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