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How can I detect the sequence of the three phases?

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nestor_agostini

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I need to detect a correct sequence of the three phases of electrical nets. Could anyone help me to suggest any circuit to do this?
 

Attached is a very simple 3-phase sequence indicator based on neons ..
I don't think you can imagine anything simpler than that ..

Rgds,
IanP
 
Is there a solid state version of the above circuit? That way I can use it to make a three phase motor run only clockwise no matter main's phase sequence.

Regards,

Fernando
 

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