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  • 1.  under voltage protection

    Posted 03-25-2024 01:22 PM

    I am the maintenance coordinator at a manufacturing plant that is in an area that suffers frequent power outages. We frenetically run around and turn off the million-dollar laser machines when a power outage occurs to prevent damages when the power returns. Please advise of the information I need to collect to shop for good under voltage protection and what products work well with you.



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    Antwain Henry
    Maintenance Coordinator
    Addison-HVAC
    Orlando FL
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  • 2.  RE: under voltage protection

    Posted 03-26-2024 08:21 AM

    Antwain

    You may already have the ability, depending on your switchgear relay system.  This might be a GE Multilin, SEL, Siemens, or other device that is displaying voltage, current, etc.  The Device Number is 27 (undervoltage relay) and most of these monitoring systems can be used to trigger or trip the main or individual circuit breakers to bring your system offline or trigger the startup of an alternate source (generator, UPS, etc.).

    If you are looking at individual systems such as an AC system (from your title) smaller relay devices are available for motors, MCC, or individual systems.

    Howard



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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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  • 3.  RE: under voltage protection

    Posted 03-27-2024 06:18 AM
    Protection of equipment can easily be achieved by installing an Undervoltage relay. This will continually monitor the supply voltage to the equipment and in the event of an Undervoltage condition, will then switch of the supply to protect.
    Respectfully Yours 
    Mr. Kuarlal Rampersad, "VA,PE,CLS,OMA,CMRP" 
    Chairman, SMRP Trinidad Caribbean Chapter 
    Phone: 1(868)683-3259



    Original Message


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