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Power metering


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#1 Shahid Anwar

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Posted 28 July 2003 - 11:36 AM

It is a nice forum,

I have a question. Am I correct in saying that all three phase KWh meters are in fact three phase motors? What will happen if we run a single phase motor using one phase and ground as neutral? What I mean is that the current will flow from KWh meter and will go back into the earth instead of going back from the meter. Will the KWh meter still shows the correct KWh consumed or less?

Best Regards.

#2 marke

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Posted 28 July 2003 - 07:03 PM

Hello Shahid Anwar

Welcome to the forum.
I have moved your post to a new thread, it was a little of topic.
The three phase meter is not really like three phase motors and is sensitive to the power in each phase. A single phase load with a return via earth or neutral will yield the correct reading.
Best regards,

#3 schow

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Posted 01 August 2003 - 09:35 AM

Hi Marke,

I found that on our standard house kWhr meter, there is marked "Class 2" on it, what this class 2 actually means? Where can I get the info of this Class 1 or 2 meter, what are the differences?? Pls advice!!!
;d;

#4 marke

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Posted 02 August 2003 - 04:36 AM

Hello schow

Class 1 and class 2 usually refer to the accuracy of the metering.
Best regards,




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