Black box apparatus for analyzing cause of arc interruption
US10777993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2018 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Mar 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a black box apparatus for analyzing a cause of arc interruption including: a controller which is installed on a power supply line and receives data detected from a CT detecting a current, a ZCT detecting a short circuit, and a voltage detector detecting a voltage; and an interruption unit which interrupts a power supply by receive a signal from the controller to operate a switch, in which the controller includes a calculation unit calculating data detected from the CT, the ZCT, and the voltage detector; a determination unit determining whether the arc occurs using the result of the calculation unit; and a storage unit storing data up to a predetermined time before the operation when the interruption unit operates to interrupt the power supply. Therefore, it is possible to accurately analyze reproduction for preventing occurrence of electrical fires and a cause of the arc interruption and determine an unstable condition of a power supply device which instantaneously occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.