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jayant dhiman
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Join Date: May 2011
Posts: 3

Meter Reading

07/02/2011 6:07 AM

Sir, I have main electricity meter which have 15/5 and 250 kw. and three sub secure meter is attached having ct ratio is 150/5,200/5,100/5. reading take in kvah. but the matter is main electricity cumption is not equal to total consumption if sub meters. why?
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TonyS
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Location: Resting under the Major Oak
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#1

Re: meter reading

07/02/2011 7:31 AM

http://cr4.globalspec.com/thread/68982

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BIHARILALGUPTA
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Join Date: Jul 2011
Posts: 9
#2

Re: meter reading

07/02/2011 8:22 AM

The metering errors are higher at lower loads so in order to match a sum of registrations of sub-meters wth a main meter it will be suitable to have load matching ct and also the kvah is a derived/calculated unit so its inherent error includes the error in active & reactive registrations.
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
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#3

Re: Meter Reading

07/02/2011 4:06 PM

Maybe a ground fault between the main meter and the others.

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