Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance

摘要

The circuit arrangement has per conductor parallel to the display measurement circuit for a voltage display (4) with constant input impedance (Z4) a further measurement circuit (7) with high input resistance. The further measurement circuit outputs a measurement value (UL1a,UL2au,UL3a) that refers to the conductor and can be used for a neutral point signal formation U0.