Measuring 3-Phase voltage and current

The Raspberry Pi is a series of credit card-sized single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and developing countries.

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Measuring 3-Phase voltage and current

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Hi all!
I’ve been tasked with logging the voltage and current for each phase (400V 3-Phase power) in real-time. Now as the pi does not have analog pins, I would need to hook up 6 ADC’s to the pi, each with minimum resolution of 14 bits, and high enough sample rate to get decent FFT.
I considered using an analog multiplexer to get away with fewer ADC’s, but this comes at the cost of dividing the sample rate. Secondly, would I need isolated ADC’s?
In conclusion, if anyone has had experience with this kind of project, any advice/input/recommendations would be very welcome :)

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