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  • 1.  Power Conditioning

    Posted 03-30-2023 02:08 PM

    I'm looking for the best practices for conditioning power to our lab that uses100 amp or less. Should we install filters for each instrument. We recently lost an old conditioner that can't be repaired. 



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    Randy Rhodes
    Curia
    Hutchinson KS
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  • 2.  RE: Power Conditioning

    Posted 03-31-2023 08:09 AM

    Randy

    I assume you are looking at harmonics if you are discussing filters per device.  There are a few options including an active harmonic filter, which would be located at your supply and it basically injects voltage/current harmonic signals 180 degrees from the harmonics in the facility.  These have come down in cost significantly but, at 100 Amps or less, may be more expensive than at the equipment itself.  Companies like Danfoss produce them.  You can also look at, as you mention, straight filters at each instrument in which you would need to determine sizing and type (capacitive - voltage, inductive - current, or both).  Finally, in both cases, check your grounds and neutrals to see if harmonic mitigation is needed there, as well, such as with Onics Energy Solutions.

    Basically, it depends on your application and the number of devices involved.



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    Howard W Penrose, Ph.D., CMRP
    Random Past SMRP Chair (2018), 2019+ Govt Relations Smart Grid, Infrastructure and Cybersecurity Working Group Chair,
    Chair Technical Standards wind, solar, energy storage, American Clean Power (formerly AWEA), and
    President
    MotorDoc LLC
    Lombard, Illinois
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    Original Message


  • 3.  RE: Power Conditioning

    Posted 05-05-2023 02:27 PM

    Hello Randy: if I could add to what my good friend Dr. Penrose wrote-- depending on specifically what you are trying to "condition", there are devices that can definitely help you. For instance-Sola makes power conditioning transformer systems for single devices and/or whole power panels. KEB America makes Sine Wave Filters that do a great job in conditioning power, as does TCI,LLC.
    I have used their products to reduce and or eliminate THD in power systems in industry with very good results.
    Another method is utilizing UPS systems that condition the power to the devices that it is supporting.
    To narrow down the best fit, we would need to know exactly what you are trying to protect in terms of power requirements and cycle time(s).



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    David Koenig
    Reliability Manager
    Pactiv Evergreen
    Pine Bluff AR
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    Original Message


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