Hello experts! Help needed. I got a relay manual for translation and one of the items there is "Phase Differential". The context is as follows: "These settings program the differential element when the differential feature is in use. This feature consists of three instantaneous overcurrent elements for phase differential protection. Differential protection may be considered first line protection for phase to phase or phase to ground faults. In the event of such a fault, differential protection may limit the damage that may occur." and "A trip occurs once the magnitude of either IaIN-IaOUT, IbIN-IbOUT, or IcIN-IcOUT (phase differential) exceeds the Pickup Level × Differential CT Primary for a period of time specified by the delay. Separate pickup levels and delays are provided for motor starting and running conditions." Is it "phase mismatch"? Thank you!