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kuppahalli
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Join Date: Mar 2011
Posts: 22

Current Reading is Uniform in All the Phases

09/06/2016 9:15 AM

Hi,

I had a problem in one my Electrical panel,The DLM meter is showing different current reading (R & B will be same & Y will be double the R & B).

We have check the CT connection ,Meter connections & measure the Input current no where else we could not able to trace the Problem.

Regards

Murali
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Crabtree
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#1

Re: Current Reading is Uniform in All the Phases

09/06/2016 10:06 AM

So, what do you want? Another reader to drive the equipment?

There's a charge for that, you know.

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James Stewart
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#2

Re: Current Reading is Uniform in All the Phases

09/06/2016 11:34 AM

Hire a knowledgeable electrician, and have him hire an electrical engineer with some experience, and you find another job not involving electricity?

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tcmtech
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#3

Re: Current Reading is Uniform in All the Phases

09/06/2016 12:33 PM

Have you considered looking at the loads on the system since that is what determines the current draw in the system?

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Crabtree
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#4
In reply to #3

Re: Current Reading is Uniform in All the Phases

09/06/2016 3:05 PM

Quite. Imbalance is a norm.

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lyn
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#5
In reply to #4

Re: Current Reading is Uniform in All the Phases

09/06/2016 4:11 PM

Especially here on CR4.
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James Stewart
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#6
In reply to #5

Re: Current Reading is Uniform in All the Phases

09/06/2016 4:55 PM

NO, that is unbalance. Some of us here lean to the right, some to the left. All of us wobble after Lyn blows bullshine up our skirts. It does make for a lively day, though.

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lyn
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#8
In reply to #6

Re: Current Reading is Uniform in All the Phases

09/06/2016 6:49 PM

The truth, the whole truth, and nothing but the truth.
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Tornado
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#7
In reply to #3

Re: Current Reading is Uniform in All the Phases

09/06/2016 6:42 PM

One of the loads might consist of a ground fault on phase Y....

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JRaef
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#9

Re: Current Reading is Uniform in All the Phases

09/06/2016 8:04 PM

The CT on Y phase may be mounted backward.

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SolarEagle
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#10

Re: Current Reading is Uniform in All the Phases

09/07/2016 12:41 AM

You may not have these wired properly...can you provide a diagram?

http://cr4.globalspec.com/thread/58018/why-Current-transformer-Star-point-is-grounded

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7anoter4
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#11

Re: Current Reading is Uniform in All the Phases

10/04/2016 1:27 PM

DLM=Digital Light Meter. How you use it? See for instance:

http://www.jameco.com/Jameco/Products/ProdDS/2140251UsersManual.pdf

or:

file:///C:/Users/user/Downloads/DLM-Power-Monitoring-Provides-Unique-Snapshots-of-Power-Use-Technical-Bulletin.pdf

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7anoter4 (1); Crabtree (2); James Stewart (2); JRaef (1); lyn (2); SolarEagle (1); tcmtech (1); Tornado (1)

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