In some cases the Master LV needs to pre-charge a DC-bus that is not only capacitive, but also DC loads are connected that will instantly use power when a voltage is applied. This can cause the Master LV to fail in pre-charging the DC-bus. It will go to alarm and in some cases the pre-charge fuse is broken.
ΒΆ Solution
The solution to this problem is to connect the DC-loads after pre-charging. A possible solution is to use a Victron Energy BatteryProtect. This battery protect switches DC-loads and can be controlled by a remote contact. This contact need to be connected to the allow-to-discharge relay output of the Master LV (Connector B; pin 3 and 4). Refer to the manual for details about the MG Master LV.
