Self-diagnostic apparatus and method for electric device
US9568517B2 · kind B2 · utility
2Cited by
5References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 4, 2013 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Nov 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R21/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diagnostic method and apparatus for self-diagnosis a load side of an electric device to detect the occurrence of the abnormal electricity usage at the load using a simple apparatus based on a current sensor includes checking rated power consumption of a load, measuring power consumption of the load in operation, calculating a change in the power consumption by comparing the rated power consumption of the load with the power consumption of the load in operation, and determining that an abnormal power consumption occurs at the load when the change in the power consumption is outside a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.