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PM8000 onboard PQ memory

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nigel_greenwave
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Posted: ‎2019-12-10 07:01 AM

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‎2019-12-10 07:01 AM

PM8000 onboard PQ memory

Hi,

 

How long does the waveform capture data remain visible via the web interface on a PM8000? 

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Charles_Murison
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Posted: ‎2020-01-03 12:23 PM

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‎2020-01-03 12:23 PM

Hello Nigel,

 

Still a loaded question. For waveform recorders, data recorders and COMTrade modules, there is a limit to the depth that is hard coded. This depth limit may or may not depend on the firmware version. You could free up all the memory inside the meter and still have a depth limit. If the depths in all the modules are set such that there is free memory available then changing the setting in one or a group a modules would not affect the depth limit in a different module. However if the depths are so large that free memory is constricted then yes the depth in one or a group of modules could prevent a different module from increasing its depth.

 

With older ION meters like the ION7650 meter, it was fairly easy to have some modules consume most of the memory. With PM8000 and the latest firmware, this is still possible but much less likely to happen.

L4 Prime for Advanced metering and Utilities

See Answer In Context

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Charles_Murison
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Posted: ‎2019-12-10 09:44 AM

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‎2019-12-10 09:44 AM

Hello Nigel,

 

This is a loaded question. As long as the waveforms are still in the meter. Factors like COMTRADE depth and how often waveforms are triggered are a factor.

 

Charles

L4 Prime for Advanced metering and Utilities
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nigel_greenwave
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Posted: ‎2019-12-10 10:03 AM

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‎2019-12-10 10:03 AM

Thanks Charles,

 

if I decrease the size of the other logs like kWh etc, will this increase the PQ log sizes?

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Charles_Murison
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Posted: ‎2020-01-03 12:23 PM

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‎2020-01-03 12:23 PM

Hello Nigel,

 

Still a loaded question. For waveform recorders, data recorders and COMTrade modules, there is a limit to the depth that is hard coded. This depth limit may or may not depend on the firmware version. You could free up all the memory inside the meter and still have a depth limit. If the depths in all the modules are set such that there is free memory available then changing the setting in one or a group a modules would not affect the depth limit in a different module. However if the depths are so large that free memory is constricted then yes the depth in one or a group of modules could prevent a different module from increasing its depth.

 

With older ION meters like the ION7650 meter, it was fairly easy to have some modules consume most of the memory. With PM8000 and the latest firmware, this is still possible but much less likely to happen.

L4 Prime for Advanced metering and Utilities
Reply
nigel_greenwave
Captain | EcoXpert Master nigel_greenwave Captain | EcoXpert Master
Captain | EcoXpert Master

Posted: ‎2020-01-12 09:11 PM

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‎2020-01-12 09:11 PM

Thanks for your info Charles

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