DC Power on VRM Portal

[Willem74 (Willem Giliomee)]

Hi

Why is my DC power sometimes “+” and sometimes “-”

My understanding is that if I use DC power from battery/inverter it must be “+” . Not sure how the “-” works

I have a 12v fridge and a 220V fridge connected at the moment. Probability that th motors are not running full speed at the moment

[lxonline (LX)]

If you don’t have a shunt measuring that dc power it is an assumed /calculated number and of no use.

[pwfarnell]

Have a look at this FAQ which explains the DC tile.

The DC System Power on a Venus device is jumping, erratic or does not match other loads

This topic covers the reported power in the DC system tile as shown on a Venus device (such as CCGX, Cerbo, Ekrano or Raspberry Pi etc.) or on VRM dashboard. The symptoms are typically that the DC power does not match with a calculation using the power shown and the battery, solar and ac tiles and/or that the DC System Power is erratic or jumping about. [DC system tile] To see the DC System tile, it needs “Has DC System” enabled in the System Setup Menu of the Venus device. [Has DC System] I…