Method for detecting a fault in an electricity meter including a breaking unit
AssigneeSagemcom Energy & Telecom SAS
InventorsHenri TEBOULLE, Christophe GRINCOURT
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Abstract
Method for detecting a fault in an electricity meter including a breaking unit, the fault producing an abnormal temperature increase in the meter, the detecting method comprising the steps of: measuring a magnitude of an electrical current flowing through the breaking unit; measuring an interior temperature in proximity to the breaking unit; and detecting the presence or absence of the fault on the basis of the measured magnitude and the measured interior temperature.
Claims20
A detection method for detecting a fault in an electricity meter that includes a cutoff member, the fault producing an abnormal rise of temperature inside the electricity meter, the detection method comprising the steps of:
- measuring the magnitude of an electric current flowing through the cutoff member;
- measuring an inside temperature of the electricity meter in the proximity of the cutoff member;
- acquiring a first inside temperature, inside the electricity meter in the proximity of the cutoff member, when the measured current is at a first plateau at a first current;
- acquiring a second inside temperature, inside the electricity meter in the proximity of the cutoff member, when the measured current is at a second plateau at a second current;
- and
- detecting the presence or the absence of a fault on the basis of the ratio of the difference between the second temperature and the first temperature divided by the difference between the second current and the first current.
Dependencies are inferred from the claim text.