Insulation fault monitoring with signal quality display

摘要

The method involves coupling a measuring signal between active conductors of a network to be monitored and ground, and acquiring measured values (3) of the measuring signal. A signal quality of the acquired measured value of the measurement signal is determined as a signal quality value (16), and the display of the signal quality value is carried out. An independent claim is included for a device for insulation monitoring in ungrounded electric direct or alternating current networks.