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iem3555 Phase A odd

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michael_franz
Admiral michael_franz
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Posted: ‎2017-08-02 06:47 AM

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‎2017-08-02 06:47 AM

iem3555 Phase A odd

TEAM:


Here is a screen capture of what we are reading for one of the iem3555 meters at a site.


WaterJet_PhA_Amps.jpg

Note that current A is a significantly higher than B or C ampere readings and the kW is negative.


Does anyone have a guess on why this would be?  All that I can come up with is either a bad sensor, the wrong sensor type on that phase or a problem with the meter itself.

Has anyone else witnessed this issue?

Sincerely,

Michael Franz l APC
Technical Consultant

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  • Tags:
  • current sensor
  • iem3000
  • iem3555
  • phase a
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Yut
Captain Yut
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Posted: ‎2017-08-02 11:25 PM

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‎2017-08-02 11:25 PM

Check wiring.

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michael_franz
Admiral michael_franz
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Posted: ‎2017-08-03 05:35 AM

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‎2017-08-03 05:35 AM

Yut:

Our electricians have checked the wiring.  I would suspect that if "A” were

backwards then it would read close to the rest in a balanced system but be

negative.

Here we are negative and over 40 times different than the other phases.

We believe that it is a malfunctioning sensor that is causing the issue.

Sincerely,

Michael

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