Metering
L1, L2, L3 and N — direct up to 63 A, CTs above it.
The controller measures all three phases and neutral itself. Up to 63 A per phase the conductors go through it directly; above that it works from external current transformers.
Accuracy is ±0.2 % typical, Class 1 to IEC 62053-21.
Direction and phase order
A measurement that is correct in magnitude and wrong in sign turns every optimisation decision inside out — the controller will discharge the battery to "cover" a load that is actually export. Getting CT orientation and phase assignment right at commissioning is the single check that matters most.
The commissioning check itself: what the UI shows for a correctly oriented CT under a known load, what a reversed one looks like, and how to fix phase assignment without re-clamping. Needs screenshots of the live-values view and confirmation of whether direction can be corrected in software.