Naming

In the measurement data, electrical variables are labeled with a uniform naming convention. These are based on the usual parameters in three-phase systems.

Phases

• L1, L2, L3: Individually considered conductors (phases).

Voltages

• U1N, U2N, U3N: Phase-to-phase voltages against neutral conductor.
• U123N: Voltage of the three-phase system (mean value).
• U12, U23, U31: Conductor voltages between two outer conductors.
• U123: Voltage of the three-phase system (mean value).

Currents

• I1, I2, I3: Currents of the individual conductors.
• I123: Total current of the system (mean value).

Power

• P1, P2, P3: Active power per phase.
• P123: Total active power of the system.

Similarly, Q1/Q123 for reactive power and S1/S123 for apparent power.