Anordnung zur Überwachung einer Elektrischen Isolierung
Anmelder: Volvo Truck Corporation, VOLVO TRUCK CORPORATION 🇸🇪
Details
- Veröffentlichungs-Nr.
- EP4145161
- Aktenzeichen
- EP21195123
- Anmeldetag
- 6. September 2021
- Veröffentlichung
- 10. April 2024
- Erteilung
- 10. April 2024
- Rechtsraum
- EP
- IPC
- G01R31/52G01R31/00
Abstract
A method for determining whether an electric insulation of a conductor is sufficient, comprising:- switching on or off a resistive load between the conductor and ground,- measuring a first voltage value u<sub>1</sub> of a resulting voltage U<sub>m</sub> between the conductor and ground at a first point in time t<sub>1</sub> after switching on or off the load,- determining if the first voltage value u<sub>1</sub> fulfils a first condition, and/or determining an initial rate of change of the resulting voltage U<sub>m</sub> between the conductor and ground based on the first voltage value u<sub>1</sub>, and determining if the initial rate of change fulfils a second condition,- determining that the electric insulation is sufficient when at least one of the first and second conditions is fulfilled.When the electric insulation is not determined to be sufficient, the method further comprises:- predicting a voltage response U<sub>p</sub> over time between the conductor and ground,- initiating a continuous measurement of the resulting voltage U<sub>m</sub> and comparing U<sub>m</sub> to U<sub>p</sub>,- determining a point in time when a relation between U<sub>m</sub> and U<sub>p</sub> fulfils a predetermined third condition, and therefrom predicting a steady-state voltage Uss,- using the steady-state voltage u<sub>ss</sub>, estimating whether the electric insulation is sufficient.
Anmelder
- Firmen
- Volvo Truck Corporation
VOLVO TRUCK CORPORATION - Land
- 🇸🇪 Schweden
Schwedischer Hersteller von Lastkraftwagen und Nutzfahrzeugen, Teil des Volvo-Konzerns. Entwickelt und produziert schwere Lkw sowie Antriebs- und Transportlösungen für den Güterverkehr.
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