Looking for insight or thoughts
I have 3 setups, 12/1200, 12/500, 12/375 inverters.
Both the 12/375 and 12/500 inverters are showing 4.5A (59W ish) (-46VA) being drawn under no-load conditions in VRM. 12/1200 is showing 0.9A (10W) under no-load (5.6W which was expected based on the data sheet).
Something is amiss here, either the 12/375 and 12/500 are reporting wrong in VRM or there are fundamental design issues with them.
Thoughts please
R
Are you able to measure the actual input current to help tie it down?
The basic setups are:
1 x MPPT. (100/12/24/48)
1 x Smart Shunt (500A)
1 x GX (Venus)
1 x 12/375 and 12/500
Same for the 12/1200 which is working as expected
(No-load) input current is being measured into the inverters, is via SmartShunt and the Phoenix Inverter via VE.Direct into the GX device - VRM.
If you select ECO mode it seems to work as expected, but loads on these units are not enough to start the inverter, so if left in "ON" mode, just drains the batteries
Hope this helps
See@SouthsidePH
They are not accurate at all in their measurements. They measure in steps up and the resolution is not high enough. It is best to have a bmv or smart shunt to keep an eye on actual useage.
Or use a digital meter.
I would not go as far as saying they have a fundamental design flaw as saying that accurate measurement was not their aim.
There are quite a few discussions on this forum about them and a few more in depth explanations.
