3phase voltage and current on LCD

Dear All,

I would like to hear from you about good solution to display 3phase voltage and current on LCD

my max load is 1200Kw

Please advice for best schematics and all in one micro controller for this project



Thanks in advance

You want to see three voltage and three current values?

Hi,

1.2MW is a lot. What voltage and what current do you expect?

Is it undistorted sine? Voltage as well as current.

If not, what values do you want to show?
True RMS or fake RMS?

What about a power meteting IC?

KLAUS

What about a power metering IC?

Click to expand...

That would be also my suggestion. It brings everything you may want, true RMS measurement, real, reactive and apparent power calculation, energy measurement. Analog front end with high accuracy designed specially for AC measurement, support for accurate dI/dt current sensors (rogowski coils), ready to use reference circuits and evaluation boards.

c_mitra said:

You want to see three voltage and three current values?

Click to expand...

mitara thanks for reply

yes I need 3 voltage and three current

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KlausST said:

Hi,

1.2MW is a lot. What voltage and what current do you expect?

Is it undistorted sine? Voltage as well as current.

If not, what values do you want to show?
True RMS or fake RMS?

What about a power meteting IC?

KLAUS

Click to expand...

Dear Klaus thanks for the reply

Voltage is 415

Is it undistorted sine?

Click to expand...

What do you mean?

I need to show True RMS

I am familier with PIC
Does PIC have power metering IC

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FvM said:

That would be also my suggestion. It brings everything you may want, true RMS measurement, real, reactive and apparent power calculation, energy measurement. Analog front end with high accuracy designed specially for AC measurement, support for accurate dI/dt current sensors (rogowski coils), ready to use reference circuits and evaluation boards.

Click to expand...

Dear FvM Thanks for reply

Does PIC have power metering IC

what are the factors that I have to consider when selecting rogowski coils

Please advice