3-Phase Power Monitoring

[Christos]

Hello,

I am planning to measure the Power consumption in a building which has a 3-Phase voltage system. Each line is 220V. I am interested in measuring real time kVA, monitor it with Labview through a data acqusition module. I will measure separately the Amps of each phase as well and i will calculate from that the Power Factor for more accurate power measurement. Do you have any suggestions on what voltage/current clamps should i use? These clamps should give reference voltages in the range that the usb NI modules vould monitor. Please also give me your opinion if the thinking of this project is right. Any other better solutions?

Thank you,

CK

[jyang72211]

Have you thought about using the power meter PM870 from Square D (now is Schneider Electric)?

Yik

[Christos]

Actually i have thought about it, but i was thinking that it will be easy to built such a system using Labview and a DAQ system. What i am not familiar with is what front-end sensors/probes to use.

Anyone has experience with such voltage and current probes?

Thank you,

CK