what causes potential transformers to explode

Discussion in 'Off-Topic' started by marc7267, Oct 12, 2008.

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  1. marc7267

    Thread Starter New Member

    Oct 12, 2008
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    hi i am marc new member
    i just would like to ask your help, anybody out there, to please explain to me what causes the potential transformer of a primary metering to explode?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    If you're speaking of the household step down transformer out on the utility pole (pole pig), they go bang when they have a winding go short. The heating due to the short circuit current transfers to the cooling oil in the can. The expansion pressurizes the can and causes it to fail, making the explosion.
     
  3. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    On the other hand, are you referring to the 'metering' transformers (a.k.a. "current" transformer{s}) -- even moderately loaded operation without the meter in place (naughty, naughty!;)) will summarily 'dispatch' them!:eek:

    Best regards
    HP:D
     
  4. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
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    BTW @marc7267 your post/thread is more suited to the "General Electronics Chat" forum -- Proper placement of an inquiry produces more replies:) --- Upon your request, perhaps a moderator will move the thread for you?

    Best regards
    HP:)
     
  5. Sparky49

    Active Member

    Jul 16, 2011
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    Only 7 years late...
     
    GopherT and Brownout like this.
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