Circuit assembly for fault detection in an ungrounded high-voltage system
US12210046B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2019 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a circuit assembly (10) for fault detection in an ungrounded high-voltage system (20) having a connected inverter (4) and having at least one resistor (5) between a high-voltage potential (7a, 7b) of the high-voltage system (20) and a reference potential (8), the circuit assembly (10) comprising: a sensing circuit (1), which is designed to tap a voltage from the resistor (5), to generate a first measurement value therefrom and to provide the first measurement value at an output (1c, 1d); and an evaluation device (2), which is connected to the output (1c, 1d) of the sensing circuit (1), the evaluation device (2) being designed to compare the first measurement value with a first limit value and to output a first signal if the first measurement value exceeds the first limit value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.