Patent · US Active

Methods and devices for selective insulation monitoring in ungrounded Isolé Terre (IT) power supply systems

US11456589B2 · kind B2 · utility

0Cited by

8References

4Claims

0Family size

Assignee

Bender GmbH & Co. KG · DE

Inventors

Dieter Hackl · Albach, DE
Oliver Schaefer · Sankt Wendel, DE

Key dates

Filing date	Jun 11, 2020
Grant date	Sep 27, 2022
Priority date	—
Expiry date	Apr 23, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/36
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods and devices for insulation monitoring of an ungrounded IT power supply system having at least two phase conductors includes determining an insulation resistance separately for each phase conductor using a separate response value. In one embodiment of the invention, relevant current and voltage distributions are calculated. In another embodiment, a change time window is set within which a second response value is activated. In yet another embodiment, an option of shutting down/continuing operation of the IT power supply system is offered.

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