Patent · US Active

Method for insulation fault location and an insulation fault location system for an ungrounded power supply system

US10598720B2 · kind B2 · utility

1Cited by

1References

12Claims

0Family size

Assignee

Bender GmbH & Co. KG · DE

Inventors

Oliver Schaefer · Sankt Wendel, DE
Helmut Becker · Limeshain, DE
Carsten Hartmann · Hirschberg, DE

Key dates

Filing date	Jun 7, 2018
Grant date	Mar 24, 2020
Priority date	—
Expiry date	Aug 4, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/1272
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method for insulation fault location as well as to an insulation fault location system for an ungrounded power supply system.The main idea of the present invention rests upon the idea that while preserving a predetermined maximally admissible test current amplitude, a test current pulse duration of a test current is adaptively set such that all interfering values are eliminated in a captured differential current, in particular the leakage currents arising in consequence of large supply leakage capacitances.Should a test of the value of the final value of the differential current reveal that a test current threshold value has been exceeded, this exceedance can be seen as an indicator that the respective conductor section is therefore in the fault circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.