How to measure electric power?

[ArFa]

Hi all,
I want to measure output voltage, output current and output power of a 3-phase power generator, and send those data to MCU for analyzing, how can I do that ?

 

[Harald Kapp]

My tip: get a 3-phase power meter with a serial port to read the data from the meter. Wire the unit up to the generator as shown in the manual.
A Google search will turn up lots of sources for such meters.

 

[ArFa]

Can I use any hall effect sensor ?
Do you know any of these ?

 

[Fish4Fun]

ArFa,

I don't know your background, but measuring 3-phase power can be more than a little tricky, especially if the load isn't balanced and/or is highly reactive. Most businesses that use 3-phase power recognize the need for professional engineering help in load management and either contract periodic reviews or hire a full time engineer for the purpose. Harald's advice is good; I am not suggesting you can't DIY, but you need to have a firm grasp on the mathematics of what you are measuring before you worry about how to measure it.

Fish

 

[Harald Kapp]

ArFa,
your original question exhibits a certain lack of understanding of power electronics. I therefore cannot advise you to any do-it-yourself solution. You're dealing with life-threatening voltages and currents.
Therefore my only advice can be to get a commercial product (which should be safe) and use it strictly according to the manual.