AlternatingCurrent (ALTC)
This feature indicates the cluster can measure an alternating current.
DirectCurrent (DIRC)
This feature indicates the cluster can measure a direct current.
Harmonics (HARM)
This feature indicates the cluster can measure the harmonics of an alternating current.
PolyphasePower (POLY)
This feature indicates the cluster represents the collective measurements for a Polyphase power supply.
PowerQuality (PWRQ)
This feature indicates the cluster can measure the harmonic phases of an alternating current.
These are optional features supported by ElectricalPowerMeasurementCluster.
See
MatterSpecification.v13.Cluster § 2.13.4