short circuit protection for inverter AC output

Discussion in 'General Electronics Chat' started by fabieville, May 6, 2011.

  1. fabieville

    Thread Starter Member

    May 25, 2009
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    do you know where i could find a short circuit protection schematic for the AC output side of an inverter?
     
  2. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Could not have said any better.

    Although he could use overload tripper at the battery side and CB at the output too..
     
  4. strantor

    AAC Fanatic!

    Oct 3, 2010
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    Fuzing drive outputs isn't the norm. There are circuits inside most drives which take care of motor protection. Refer to these manuals from common drive manufacturers:


    Lenze Drives, not output fuzing shown :

    [​IMG]





    Yaksawa drive manual, no output fuzing shown:
    [​IMG]




    Allen bradley manual, actually recommends against it:
    [​IMG]
     
  5. strantor

    AAC Fanatic!

    Oct 3, 2010
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    sorry, I was on a roll about 3phase motor controllers (also called "Inverters"); if that's not what you were talking about then please ignore.
     
  6. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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    True that VFDs provide overload protection, whilst overcurrent is in the form of supply line fusing/breakers.

    You have made a good point in that further clarification should have been sought.
     
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