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PM8000 onboard PQ memory

Metering & Power Quality

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nigel_greenwave
Captain | EcoXpert Master Captain | EcoXpert Master
Captain | EcoXpert Master
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324

PM8000 onboard PQ memory

Hi,

 

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


Accepted Solutions
Charles_Murison
Picard Picard
Picard
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1
308

Re: PM8000 onboard PQ memory

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

4 Replies 4
Charles_Murison
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Picard
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3
321

Re: PM8000 onboard PQ memory

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
nigel_greenwave
Captain | EcoXpert Master Captain | EcoXpert Master
Captain | EcoXpert Master
0 Likes
2
319

Re: PM8000 onboard PQ memory

Thanks Charles,

 

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

Charles_Murison
Picard Picard
Picard
0 Likes
1
309

Re: PM8000 onboard PQ memory

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
nigel_greenwave
Captain | EcoXpert Master Captain | EcoXpert Master
Captain | EcoXpert Master
0 Likes
0
303

Re: PM8000 onboard PQ memory

Thanks for your info Charles