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6000XP won't start charge with 188VDC

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Cmiller17363

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Jul 24, 2020
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I have a 6000XP with 4 450W SEG panels in series. OCV is ~200V and I am seeing 188V currently on a cloudy day but charging has not started. Has anyone else noticed this? Is the threshold to start charging abnormally high for these units?
 
I didn't change the charge voltage, but it is possible. Once it starts charging, it will charge until the voltage gets down to 165V or so before shutting down. I'll dig a bit further into the parameters. 145V is the starting voltage I was expecting as well.
 
That seems high. Just looking at today's data, my 6000XP started charging @132.7V in the morning and cutoff @126.6V in late afternoon.
 
Here is the info for yesterday. It was a sunny day. The delay for charging to begin was not as pronounced as it is on a cloudy day.
 

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Here is February 3rd (cloudy). There were several hours in the morning where the voltage was high enough to charge, but the MPPT didn't kick in. This is why I was wondering if there is a minimum wattage/amperage threshold to start charging because I have never had a SCC do this before. Has anyone else noticed this on cloudy days?
 

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