Motor Guarding Transient Filters

Henka’s Motor Guarding Filters shield motor insulation from high-frequency voltage spikes caused by PWM output in Adjustable Frequency Drives (AFDs). These spikes can stress motor windings, causing insulation failure. Designed for reliability, Henka filters use optimized inductors and resistors to mitigate transients, extending motor lifespan and reducing downtime.

Extend your motor’s lifespan with protection from damaging voltage spikes and transients that cause costly failures.

Motor Guarding Transient Filters

Henka’s Motor Guarding Filters shield motor insulation from high-frequency voltage spikes caused by PWM output in Adjustable Frequency Drives (AFDs). These spikes can stress motor windings, causing insulation failure. Designed for reliability, Henka filters use optimized inductors and resistors to mitigate transients, extending motor lifespan and reducing downtime.

Extend your motor’s lifespan with protection from damaging voltage spikes and transients that cause costly failures.

Technical Specifications

Tailor-Made Transformer Solutions

Henka’s Motor Guarding Filters protect motors from voltage spikes with capacities from 2A to 320A and a maximum voltage of 600V. Built with air-cooled copper windings and durable insulation (180°C for 2–11A, 220°C for 17–320A), they operate quietly below 40dBA. Designed to handle overloads up to 150% for one minute, they maintain reliable inductance under heavy loads.

Housed in a Type 1 indoor enclosure, they are CSA-certified, UL-listed, and meet IEEE and NEMA standards.

TypE:

Rating:

Capacity:

2A to 320 A Three Phase

Cooling:

Air Cooled (ANN / AN)

Frequency:

60Hz (50/60Hz Optional)

Fuse:

Resistor:

Capacitor:

Conductors:

Copper (Cu) Windings

Grounding:

Temp. Rise:

Impregnation:

Overload Capability:

150% of rated current for 1 min.

Saturation Level:

Not less than 250% of rated current (min 50% of rated inductance at 350% rated current)

Efficiency:

K-Factor:

Config:

Enclosure Type:

Type 1 Indoor

Enclosure Finish:

Loadcenter:

Primary Breaker:

Mounting:

Warranty:

12 Months

Quality System:

ISO 9001:2015 Quality Management System

Insulation System:

  • 180°C Insulation System (2 – 11A) (115 °C Temp Rise Max)
  • 220°C Insulation System (17 – 320A) (150 °C Temp Rise Max)

Testing:

Voltage Class:

  • 600V Max

Secondary Voltage:

Taps:

Certifications:

  • CSA Certified
  • UL Listed

Reference Standards:

  • IEEE C57.110
  • NEMA ST-20

Optional Features & Accessories:

Contact us for a custom solution or explore our product range

Driving Success
with Henka Power

Reliable Transformers for Every Industry

At Henka, we believe power isn’t just about equipment — it’s about delivering solutions that fuel your success. Our commitment goes beyond manufacturing transformers; we provide dependable, efficient systems tailored to meet your project’s exact requirements. We start by understanding your specific needs, ensuring every detail is considered. Whether it’s a complex industrial setup or a commercial application, our team of experts guides you from consultation through delivery. With Henka, you gain more than just reliable transformers — you gain a partner dedicated to your long-term operational success.

Quality Support
Every Step of The Way

Professional Advice that You Can Count On

At Henka, our commitment doesn’t end with delivering high-quality transformers — it extends to providing exceptional customer support tailored to your needs. We understand that reliable power solutions require more than great products; they need responsive, knowledgeable assistance every step of the way. From the moment you reach out, our dedicated support team works closely with you to address your questions, solve challenges, and provide expert guidance. We’re here to ensure your operations run smoothly.

Henka provides tailored transformer solutions to meet your specific needs. Contact us for a custom solution or explore our product range.

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