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How to detect three-phase sequence

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Teja.p

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How to detect three phase sequenc

Dear all
I am using three phase for my Equipment.. i want to measure the three phase sequence using micro controller or hard ware ..
my requirement is how to measure the three phase sequence ..if three phase sequence is ok i want to display health ok..if phase sequence is not ok means phase interchange health not ok..
please help mee..
i tried but not get results
 

Re: how to detect three phase sequenc

When you say "three phase sequence" do you mean you want to detect the phase relationship? That would simply involve detecting the zero crossing and measuring the time between zero crossings. You say you tried but don't say what you did.
 

Re: how to detect three phase sequenc

Lot of circuits available in google
 

Re: How to detect three phase sequenc

Hi,

Simple solutions just use two phases. (To check direction)
Generate digital square wave signals of both phases using a comparator curcuit.
Then use a D-FF. Feed one signal to the CLK input, the other to the D input.
Q output shows phase sequence direction.

Klaus
 
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