EPA Filters

As a proud partner of EPA GmbH, MH&W serves as a key distributor for their industry-leading electromagnetic compatibility (EMC) products. This strategic collaboration allows MH&W to provide advanced power quality solutions—including harmonic, sinusoidal, and RFI filters—that are essential for optimizing the performance and reliability of electrical systems in diverse industrial environments. By offering these high-performance EPA products, MH&W ensures that clients can effectively mitigate harmonic distortion and protect sensitive motor components from damage, ultimately enhancing operational efficiency and extending the lifespan of their equipment.

Harmonic Distortion Mitigation

These filters actively remove unwanted harmonic frequencies from the power supply, which preserves the integrity of the power and provides a clean sinusoidal waveform. Passive models can specifically reduce total harmonic distortion (THDi) to less than 5% or 8%, depending on the unit.

Extended Equipment Lifespan

By alleviating the adverse effects of harmonic distortion, EPA filters reduce thermal stress on electrical equipment, which boosts overall reliability and extends the operational lifespan of motors and other sensitive components.

Protection for VFD & Motors

Sinusoidal filters within the EPA lineup smooth the pulse-width modulated (PWM) outputs from variable frequency drives (VFDs) into near-perfect sine waves. This process eliminates high-voltage spikes and protects motor bearings and cable insulation from damage.

Improved Interference Immunity

RFI filters manage radiofrequency interference by selectively rejecting unwanted signals within power lines. This ensures that disruption to electronic devices is blocked and high-emission applications remain stable.

Enhanced Operational Safety

EPA filters are designed for minimal leakage currents, which ensures safer operation. Select models also feature low leakage current spikes during connection and disconnection to prevent faulty RCD trippings.

Global Standards Compliance

These filtering solutions are designed to meet or exceed international electromagnetic compatibility (EMC) and safety requirements, such as IEC/EN 61000-3-12 for harmonic emissions.

Watch the EPA GmbH Video

As a specialist in EMC technology, MH&W distributes EPA’s high-quality line filters and products designed to ensure the trouble-free operation of machines and systems. In an era of increasing drive controllers and electronic components, these solutions are essential for meeting industry standards and maintaining electromagnetic compatibility. Beyond standard products, MH&W provides access to customized filter development and calibration services to meet the specific engineering requirements of any application.

Frequently Asked Questions

What core EMC products does EPA GmbH offer?

EPA GmbH provides a comprehensive range of high-performance electromagnetic compatibility solutions, including single-phase and three-phase line filters, leakage current filters, and harmonic filters. Their catalog also features specialized power quality components such as line reactors, sinusoidal filters, and dV/dt chokes designed to protect both drives and motors.

How do EPA line filters improve the performance of electrical drive systems?

EPA line filters, such as the NF-KC series, are specifically engineered for electrical drives to provide extremely high attenuation from 10 kHz to 30 MHz. By reducing conducted emissions, these filters ensure that your systems meet strict international interference limits, such as EN 55011 Class B.

Can EPA products help prevent unwanted tripping of safety breakers (RCDs)?

Yes. EPA offers specialized Leakage Current Reduction Filters (such as the NF-KC-DAR series) designed to reduce operational leakage currents. These filters are particularly effective for frequency inverters and servo controllers, as they improve overall EMC while preventing nuisance tripping of residual current devices (RCDs).

What are the benefits of using EPA Sinusoidal Filters and dV/dt Chokes?

These output-side components are critical for protecting motor integrity. Sinusoidal filters convert a drive’s PWM output into a smooth sine wave to reduce motor noise and heat, while dV/dt chokes limit the rate of voltage rise to prevent insulation stress, especially in systems with long motor cables.

Are EPA GmbH products compliant with international safety standards?

Absolutely. EPA products are built according to rigorous standards including EN 60939, UL 1283, and CSA 22.2 No. 8. Many items in the catalog carry major international certifications, such as cURus (UL File E245360) and CE, ensuring they meet the safety requirements for global industrial applications.

MH&W International Corp. is the North American supplier for EPA GmbH, providing the region with direct access to these German-engineered EMC filters and power quality solutions. For technical support or to request a quote, contact our engineering team today to submit an RFQ and ensure your system meets the highest EMC standards.