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Recent content by StruggleEngr

  1. StruggleEngr

    NFPA 780 Chapter 8 Section 8.4 Interpretation

    Hi, you are absolutely right. I have reached out to a Lightning Protection Specialist and installer we have worked with in the past. I was hoping maybe the community maybe have had similar experiences as my facility and could provide their interpretation. Thank you, SE
  2. StruggleEngr

    NFPA 780 Chapter 8 Section 8.4 Interpretation

    Hello All, I work as a Facility Engineer for a government ammunition and explosive storage campus. I do not have much experience in a topic that comes up routinely: Lightning Protection, specifically NFPA 780 Chapter 8 Section 8.4.1 ground ring electrode. The following is the text from NFPA...
  3. StruggleEngr

    Multiple Manufacturing Buildings VFDs tripping due to Overvoltage

    Hello All, I am a field engineer at a complex that serves multiple manufacturing buildings. My group is responsible for the 12.47kV overhead distribution to the building service entrance equipment, including the transformer (Delta-Wye XFMR). Three manufacturing buildings are experiencing...
  4. StruggleEngr

    Load Flow Study - Available Fault Current and Voltage Regulation

    Hello all, How does a higher available fault current provide better voltage regulation? I was watching a presentation on a System Analysis - Load Flow Study. The presenter had a slide regarding voltage regulation and that it is the percent difference between the voltage at a certain point in...
  5. StruggleEngr

    Alarms in DCS/PCS When Disconnect Closes

    Hello All, I am a field engineer helping with StartUp and Commissioning and have encountered a problem with the team that has us stumped. When we closed our 345kV switchyard disconnect onto our 500kV HVCB, we noticed false alarms on various instruments throughout the plant. These alarms include...

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