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  1. SmokeTest

    Phase Current Variation

    I need to correct my initial thread entry. The power monitor is connected to the OUTPUT of a 440VAC 3-phase voltage regulator. The OUTPUT transformer of the regulator is a delta configuration with no neutral. The regulator OUTPUT is supplying a welding machine's 3 phase tranformer input...
  2. SmokeTest

    Phase Current Variation

    I have a power monitor connected to the input of a 440VAC 3-phase voltage regulator. The input transformer is a delta configuration with no neutral. Is it normal to see a difference in the phase current measurements? I am observing the following: L1=0.521A, L2=1.561A, L3=1.964A. What would be...
  3. SmokeTest

    Measuring noise on signal ground with O'scope

    Utilizing an oscilloscope, what would be the best way to connect and setup the scope to measure any electrical noise that may be present on a circuit's signal ground?

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