Verfahren zur Überwachung der Isolation eines Ungeerdeten Gleichspannungsbusses

Details

Veröffentlichungs-Nr.

EP3879281

Aktenzeichen

EP20162739

Anmeldetag

12. März 2020

Veröffentlichung

20. Dezember 2023

Erteilung

20. Dezember 2023

Rechtsraum

EP

IPC

G01R27/18

Abstract

The invention relates to a method for monitoring isolation of an ungrounded DC, direct current, bus (3) of an electric vehicle supply equipment, EVSE, (1) comprising the steps of:Applying a first periodical test signal having a first frequency and applying a second periodical test signal having a second frequency on the DC bus (3), whereby the second frequency is greater than the first frequency,Measuring a first voltage and/or current fluctuation on the DC bus (3) resulting from the first test signal and measuring a second voltage and/or current fluctuation on the DC bus (3) resulting from the second test signal, andCorrelating the first test signal with the first fluctuation resulting in a first vector and correlating the second test signal with the second measured fluctuation resulting in a second vector.

Anmelder

Firmen

ABB E-mobility B.V.
ABB-E-mobility B.V.
ABB Schweiz AG

Land

🇳🇱 Niederlande

Fachgebiete