Inrush current

Discussion in 'General Electronics Chat' started by cpleng7, Jul 28, 2010.

  1. cpleng7

    Thread Starter Active Member

    Dec 18, 2008
    120
    0
    Did someone know any equipment can measure the inrush current for induction motor or transformer?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Something like a current transformer and a fast digitizer might work. Perhaps an o'scope set to single sweep if you don't need a lot of precision.
     
  3. someonesdad

    Senior Member

    Jul 7, 2009
    1,585
    141
    In addition to the scope, many clamp-on ammeters have the ability to measure inrush current. As long as you understand that they are sampled measurements and can miss the true peak current, they may get you close to want you want. If you really need to know the actual peak current, use a scope with a suitable transducer (current transformer, clamp-on current probe, Hall effect probe, resistor, etc.).
     
  4. timrobbins

    Active Member

    Aug 29, 2009
    318
    16
  5. John Luciani

    Active Member

    Apr 3, 2007
    477
    0
    A current probe and an oscilloscope will work. Tektronix makes a couple of
    different probes and interface modules (amplifiers). The amplifier output plugs
    into the oscilloscope input.

    (* jcl *)
     
Loading...