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Stop Arc flash on a transformer

Discussion in 'Equipment to Reduce Arc Flash Dangers' started by mahermi2, Jul 2, 2009.

  1. mahermi2 New Member

    Does anyone have any ideas on how to stop arc flashes on a transformer without short circuiting it? We've thought of enclosing it in a grounded housing where the air vents are located on the bottom allowing the flash to blow out the top. Currently the air vents are located on the side allowing a possible arc to permiate through the spaces.
    mahermi2, Jul 2, 2009
    #1

  2. jghrist Well-Known Member

    Am I missing something? Won't tripping the primary protective device stop the arc?
    jghrist, Jul 2, 2009
    #2

  3. McFlash New Member

    Depending on your system configuration you could implement a transformer differential scheme. This would clear a fault on the primary or secondary windings much quicker than typical overcurrent devices.
    McFlash, Jul 6, 2009
    #3

  4. mahermi2 New Member

    What I'm looking at is ABB's REA 101
    mahermi2, Jul 16, 2009
    #4

  5. Zog Well-Known Member

    WHat type of transformer (ratings)are you talking about? What is the OCPD on the primary?
    Zog, Jul 16, 2009
    #5

  6. THE CABLE GUY Well-Known Member

    I just looked up this ABB part. No answer to your question. But I have to read about this part more. It seems interesting. I wonder how much it cost.
    THE CABLE GUY, Sep 14, 2009
    #6

  7. moreause New Member

    that's an issue with some dry type transformer
    they are vented between elbow and eye level that is kind of dangerous

    some other model are at bottom and top of tranformer door those are more secure in case of a flash if you are near by
    moreause, Nov 18, 2009
    #7

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