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Axpert switching off and on by itself


Aldre
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Hi all,

 

I have a client who has 2 x 4KW Axperts in paralell with 24 x 2v flooded batteries and 12 x 250wp poly modules. Installation was done in December 2015 and of late the inverters are switching off and back on after a second or two. They mainly experience this at night. He says he doesn't believe that the inverters are overloading as they stagger the loads, but he and I will do an over load test. Anyone who may know what else (i.e. other than an overload) may cause the inverters to switch off and on?

Many thanks,

Aldre

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I had the same problem with Axpert. This is the power saving setting that switches the unit off although some appliances is drawing current.

I think the loaf current sensing is not to accurate.

I have an Arduino setup to measure the actual batt and pv currents and voltages and logs them. I found the inveter is not that accurate though.

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2 hours ago, vandyh said:

I have an Arduino setup to measure the actual batt and pv currents and voltages and logs them. I found the inveter is not that accurate though.

Pray tell us more of the device and why the inverter is not that accurate?

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