Patent ID: 11867718
Assignee: BENDER GMBH & CO. KG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A method for identifying and locating cyclic momentary insulation faults in an ungrounded power supply system having a consumer connected via a branch circuit, the method comprising the steps:
detecting a fault current caused by the momentary insulation fault as a differential current in the branch circuit being monitored and displaying the temporal progression of the differential current via a differential current signal by means of a differential current sensor,
providing a processing signal which temporally describes a process sequence of a process taking place in the consumer,
correlating the differential current signal with the processing signal in a computing unit in order to yield a correlation signal as a measure for a temporal match between the differential current signal and the processing signal, and
signaling the momentary insulation fault via the computing unit by means of a signaling signal if the correlation signal shows the temporal match.