Detecting the open or closed state of a circuit breaker
AssigneeSagemcom Energy & Telecom SAS
InventorsHenri Teboulle, Pierre Lhuillier
Life of this patent
Estimating the term…
Abstract
A meter including a phase conductor connected to a phase line of the network, a cut-off member, and a detection circuit comprising: an injection chain arranged, while the cut-off member is open, to generate a test signal with a predetermined voltage level, and arranged to inject the test signal into the phase conductor downstream from the cut-off member; a measurement chain arranged to measure an intermediate voltage level of the test signal at a measurement point of the injection chain, which point is situated between the generator component and the injection component; a processor component arranged to act as a function of the intermediate voltage level in order to determine whether the circuit breaker is open or closed.
Claims16
A meter arranged to measure electrical energy delivered to an installation by a distribution network comprising a phase line and a neutral line, the meter being arranged to be connected to a circuit breaker situated outside the meter and downstream therefrom, the meter comprising:
- a phase conductor and a neutral conductor arranged to be connected respectively to the phase line and to the neutral line of the distribution network;
- a cut-off member connected in the phase conductor;
- a detection circuit comprising:
- an injection chain comprising at least one generator component and an injection component, the at least one generator component being arranged, while the cut-off member is open, to generate a test signal with a predetermined voltage level, the injection component being arranged to inject the test signal into the phase conductor downstream from the cut-off member, the injection component having a first terminal connected to the at least one generator component and a second terminal connected to the phase conductor;
- a measurement chain arranged to measure an intermediate voltage level of the test signal at a measurement point (Pm) of the injection chain, which point is situated between the at least one generator component and the injection component and is connected to the at least one generator component and to the first terminal of the injection component;
- a processor component arranged to act as a function of the intermediate voltage level in order to determine whether the circuit breaker is open or closed.
Dependencies are inferred from the claim text.