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4246 Views 1 Reply Latest reply: Apr 25, 2014 12:28 AM by papalyle RSS
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Apr 24, 2014 1:54 PM

3 Phase Line Monitoring

I'm not very familiar with 3 phase electricity (230VAC, 60Hz)  (I've used it and understand but don't deal with it often) but I've been asked to come up with something to verify that all the phases are good to go, meaning they're at the appropriate voltage, the appropriate phase angle, and not shorting out to anything.


I'm imagining a circuit that notifies a microcontroller of any issues but... is there a good place to start?

  • papalyle Novice 23 posts since
    Apr 6, 2014
    Currently Being Moderated
    Apr 25, 2014 12:28 AM (in response to LanceLK)
    3 Phase Line Monitoring

    Dear Sir,


    One thing you will need is a Y (wye) to DELTA switch, because for the same input, Y is almost double DELTA. Next you will probably want to measure LINE to Neutral on


    Y and LINE to LINE on delta. So on both of these you would measure A to B, B to C, and C to A oneither of these. You would also probably want to measure current in each leg


    of either one.  In  the F-15 avionics tests we used relay switching arrangements to pick up the points we wanted. I'm afraid I'm going to time out.


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