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Mesta Electronics, Inc. specializes in the design, development, and manufacture of advanced power quality and power conversion equipment. Mesta's products offer innovative design, superior efficiency, and exceptional reliability, ranging from highly advanced harmonic filters to extremely precise induction heating power supplies. Mesta is involved in several different industries; its induction heating power supplies are prominent in the crystal and material growth market, while its active harmonic filters can be found in a variety of different manufacturing, water, and power facilities. Since 1977, Mesta has proudly been a family run company and has continued to grow throughout its second generation of leadership.

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Mesta DPM™ Active Harmonic Filter


•  Facilitates IEEE-519-2014 compliance
•  Eliminates high transient harmonics during sudden load changes
•  Decreases utility costs
•  Accomodates large scale applications
•  Lowers operating costs and increases reliability
•  Provides detailed power information
•  Delivers comprehensive historical information
•  Increases usable system capacity
•  Enables cost effective solutions
•  Ensures quality production and standards

•Actively reduces harmonic distortion to below 5%
•Instantly reacts to varying loads
•Improves power factor to near unity
•Parallel system installation
•98% operational efficiency
•Advanced LCD touchscreen display
•USB Data Retrieval
•Balances three phase loads
•Corrects for single/multiple loads
•UL and CUL listed

he Mesta DPM active harmonic filter utilizes high frequency current sensors to continuously monitor the load current. By utilizing highly sophisticated software and a powerful DSP microcomputer, the system is able to instantaneously inject a corrective current from it’s IGBT based inverter to dramatically reduce harmonic distortion.

The active harmonic filter helps to meet ANSI/IEEE-519 specifications for single or multiple plant loads under all constant and variable load conditions.

System's can also be configured to simultaneously correct for out of phase current and unbalanced loads, in addition to harmonic distortion, to make the resulting line current balanced, at near unity power factor, and IEEE-519 compliant.

Mesta launched its new 3rd Generation DPM Active Harmonic Filter in Q1 of 2019. This new active filter has several new features and functions to enhance the user experience, as well as, provide detailed diagnositic information unlike any active filter on the market. Learn about some of these new features below.
New Full Color HMI Display
      –Larger Dust Tight LCD Screen for easy viewing 
      –Allows for the user to evaluate comprehensive historical data from hundreds of on/off events
      –Allows for the user to select the desired harmonic correction TDD% to be achieved
      –Allows for the user to select the desired Power Factor to be achieved
New Front Panel Interface
      –LED Indicators to clearly show status details for the following: Power, Control Status, Power Status 
      –Allows for the user plug a USB to plug in and download firmware updates to the unit (no additional software required)
      –Allows for the user plug a USB to plug in and download  historical data from the unit to review
Ethernet/IP or ModBus TCP Protocol Options
      –Now options are an integral chip to the active filter instead of a completely separate module 
      –Allows for more comprehensive information to be review over those protocols
Addon Profile over Ethernet/IP

Trying to determine what is right for your project can often be an arduous task.  Fortunately, we are here to help.  Feel free to reach out to AIS and ask for assistance and we are happy to answer your questions, work with your team of engineers, consultants, and contractors to mitigate all of your power quality concerns and or achieve a desired level of mandated compliance for your industry.
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