1. Choose the Principle measurements option using the ↑ and ↓ keys.
2. Confirm the Principle measurements option by pressing the ENT key.
3. Press the ↑ and ↓ keys to run over the main measurement screens: circular display loop.
I1, I2, I3, IN = actual root mean square values in amps of the 3 phases and neutral of the current supplied by Mains and the current absorbed by the non-linear load.
THDI1, THDI2, THDI3 = distortion rates of the 3 phases (THDI = I-harmonic/I-basic) of the current supplied by Mains and the current absorbed by the non-linear load. Umains = average value of the 3 Mains phase-to-phase voltages.