Electric circuit arrangement and a method for the functional testing of a monitoring device for an electric power supply system
US11486937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2021 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | May 11, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/155
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an electric circuit arrangement (20) for the functional testing of a monitoring device (4) for a power supply system (2), the electric circuit arrangement (20) having a test resistance (Rf1, Rf2) which is switched between an active conductor (L1, L2) of the power supply system (2) and ground (PE) and has a settable actual resistance value (Rx). In this context, a bidirectional cascade (12) consisting of field-effect transistors as test resistances (Rf1, Rf2) and an analog control (10) for the continuous-value setting of the actual resistance value (Rx) to a predefined target resistance value (R0) are provided.Furthermore, the invention relates to a modular circuit arrangement (60) consisting of several electric circuit arrangements (20) according to the invention, each of the electric circuit arrangements (20) being assigned a different active conductor (L1, L2) of the electric power supply system (2), and a central control unit (50) being implemented for controlling and monitoring the electric circuit arrangements (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.