My power supply tripped the RCD

Discussion in 'General Electronics Chat' started by tom66, Apr 18, 2011.

  1. tom66

    Thread Starter Senior Member

    May 9, 2009
    2,613
    214
    I was using my power supply to power an electronics project. The power supply is a TM035-3/GM035-3 0-3A 0-35V CC/CV power supply. When I turned the supply off, then on again, it made a little pop sound from inside and the RCD for the sockets tripped. (Lights remained.) It also blew the 5A mains input fuse. Obviously both safety features helped protect against a bad failure. After untripping the RCD and replacing the fuse, all is well - it still works perfectly fine. I am now a little concerned about how the power supply blew both the fuse and tripped the RCD! I have turned the supply on and off many times before. I am thinking inrush current but why only this time?
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    RCD? You need to defined anagrams at least once in a thread.
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    It's the inrush or surge....this happens to me all the time.

    I simply swear & turn on the Breaker

    {ed}
    RCD...Residual current Device thingy

    We have ELCB...Earth Leakage Circuit Breaker thingy
     
  4. DumboFixer

    Active Member

    Feb 10, 2009
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    34
    RCD = Residual Current Device (used to be called Earth Leakage Circuit Breaker)

    In the United States and Canada, a residual current device is also known as a ground fault circuit interrupter (GFCI), ground fault interrupter (GFI) or an appliance leakage current interrupter (ALCI)

    http://en.wikipedia.org/wiki/Residual-current_device
     
  5. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    Oh! That. It does sound like capacitor surge to me.
     
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