Methods and apparatus for sensing ground leakage and automated self testing thereof
US8907678B2 · kind B2 · utility
2Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2010 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Mar 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus provide for: measuring leakage current from a source of AC power, which provides power to at least one load circuit; and comparing the measured leakage current values against one or more predetermined thresholds to establish status therefor; and automatically performing self tests to determine whether the leakage current sensing and comparing operations are operative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.