Anyone know how a modern ampy dual rate 3 phase import meter in a domestic setting behaves when exporting on some phases and importing on another?

For example let us say I am generating 1kW on each phase from solar pv with no domestic baseload. On one phase (say L3) I then switch on a 2kW load. That means:
L1 - exporting 1kW
L2 - exporting 1kW
L3 - importing 1kW
So net I am exporting 1kW.

Will the meter:
- increment at a rate of 1kW because that is what is happening on one of the phases; or
- remain still because of the net export (because it cannot go backwards)?

It all depends how it is configured. The Meter Operator should ensure that the meter is correctly configured when they / the DNO are notified of the PV connection. It may read 1kW export, it could read zero, or it could read 1kW import. It may also set a flag for the Meter Operator when it is next read.

Regards,

Alan.

It certainly shows 'RED' like most modern meters I have seen in this area. I guess I'll have to do some experiments.