Branch current monitor with an alarm
US8421639B2 · kind B2 · utility
9Cited by
239References
9Claims
0Family size
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Key dates
| Filing date | Nov 20, 2009 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Aug 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R22/068
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power meter for monitoring current in a power cable annunciates an alarm if the current transgresses one or more alarm current limits. False alarms are avoided by delaying the activation of the alarm for a delay interval following determination that current is flowing in the monitored conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.