Title:
SMART EARTH LEAKAGE CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2021/112576
Kind Code:
A1
Abstract:
The present invention relates to a smart earth leakage circuit breaker which is installed on a distribution line through which an electric current flows, measures, by means of a CT, a leakage current flowing through the distribution line, and if the measured current exceeds a preset rated sensitivity current, cuts off electricity by means of trip operation. The smart earth leakage circuit breaker further comprises: a measurement unit which tracks and measures, on the basis of measurement information of the CT, a value of the leakage current, flowing through the distribution line, which exceeds an alarm current value set by a microprocessor (MPU); the MPU which sets conditionality and the alarm current value less than the rated sensitivity current, and which, when the conditionality is satisfied on the basis of information measured by the measurement unit, issues a warning by means of an alarm unit; and the alarm unit which is operated and controlled by the MPU and warns of an abnormal symptom of the distribution line by emitting an alarm to the surrounding area.
Inventors:
LEE YOUNGKYU (KR)
Application Number:
PCT/KR2020/017522
Publication Date:
June 10, 2021
Filing Date:
December 03, 2020
Export Citation:
Assignee:
ITS CO LTD (KR)
International Classes:
H02H3/16; G01R15/18; G01R19/165; G01R31/50; G08B21/18
Domestic Patent References:
| WO2019190018A1 | 2019-10-03 |
Foreign References:
| JPH04111140U | 1992-09-28 | |||
| KR100755955B1 | 2007-09-06 | |||
| KR102008472B1 | 2019-08-07 | |||
| KR100543891B1 | 2006-01-20 |
Attorney, Agent or Firm:
OH, Juseok (KR)
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