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  1. #1
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    Phase current motor measurements with cro

    Hi,
    How to measure phase current waveforms for delta connected motor using current probe with oscilloscope? How to connect the scope probes?

    Thanks

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  2. #2
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    Re: Phase current motor measurements with cro

    If, and that is a big if, I am understanding you correctly:

    You require three clamp type probes, a single differential high voltage probe, and a 4 channel scope.

    Connect the high voltage probe to channel 1 and set the trigger to that channel.
    Clamp the current probes to each phase and feed them to channels 2,3 and 4.

    Make sure that all of the clamps are oriented correctly; i.e. that the arrow faces the motor.
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  3. #3
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    Re: Phase current motor measurements with cro

    Is this question the same as in your recent link below? Did you try suggested methods?

    "BLDC motor delta winding"

    https://www.edaboard.com/showthread.php?386841



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