1. Create Your User Profile and Status Updates

    Arc Flash Forum members are invited to create a user profile. Let others know who you are, what you do and even add a picture or avatar of yourself. What are you up to? Let people in the arc flash and electrical safety community know with "status updates"!
  2. Welcome to the All New Arc Flash Forum

    Arc Flash Forum is a community where we help each other learn about arc flash and electrical safety. There is still much to be learned about arc flash, standards, PPE, studies and more and We need your HELP!

    If you have good information about Arc Flash - Post It! If you have a question about Arc Flash - Post It! If you can provide answers to Arc Flash questions - Post it!

    Sign up as a today member! Feel free to link to this site www.arcflashforum.com. Tell your friends. We want to help everyone be safe in the workplace!
  3. Bigger and Better!

    As you have no doubt noticed, the forum has been through quite an upgraded and looks and feels very nice! There are loads of new features and ways in which this site can now be even more useful to the community in learning about Arc Flash and Electrical Safety.

    Create your detailed user profile
    Add a profile photo of yourself
    Like the forum on Facebook
    "Like" users' posts
    Publish your articles in the library
    ...and much, much more!

    Learn More About the New Features Here
Create Your User Profile and Status Updates Welcome Message Arc Flash Forum has been Upgraded!

Single Phase VFD's

Discussion in 'System Modeling and Calculations' started by McFlash, May 17, 2010.

  1. McFlash New Member

    I have recently ran into quite a conundrum when thinking about safety and arc-flash. We have some pumpstations that have single phase power coming in from the utility but we are powering three phase motors from VFD's. The question is- does the three phase output from the VFD pose any risk of AF hazard? Then if it does how in the world do you model them?

    I would love to hear peoples thoughts on the matter.
    McFlash, May 17, 2010
    #1

  2. Vincent B. Well-Known Member

    What kind of power level for the VFDs? Single phase 120V or 240V?
    What's the connection to the utility (3 wires 120-240V)? What's your main overcurrent protective device?
    Vincent B., May 17, 2010
    #2

  3. McFlash New Member

    I do not have any specifics. This is just hypothetical right now. I really did come across them but not for the purpose of a study. I guess assume the worst case in all of you questions. The ultimate function is to see if there are any occasions where this needs to be considered.
    McFlash, May 17, 2010
    #3

Share This Page