Method of identifying a short-circuit like event in a circuit breaker

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United States of America Patent

PATENT NO 12055601
APP PUB NO 20240118350A1
SERIAL NO

17960283

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Abstract

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Described is a method of identifying a short-circuit (SC) like event in a circuit breaker (CB). The method comprises sampling an incoming current to the CB to determine a maximum value of a slope of a curve of the incoming current. The method includes sampling the incoming current again before a level of the incoming current reaches a predetermined, preset, selected, or calculated SC threshold value THSC for the CB. The method involves determining from the sampled incoming current that a value of the slope of the incoming current has changed from its maximum slope value to a lower slope value to thereby determine that the incoming current is indicative of a SC like event and does not comprise a real SC event.

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Patent Owner(s)

Patent OwnerAddress
HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO LTD3/F BUILDING 6 2 SCIENCE PARK WEST AVENUE HONG KONG SCIENCE PARK SHATIN NEW TERRITORIES

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Qingchun Shenzhen, CN 5 19
Li, Tin Ho NT, HK 9 32
Li, Xin NT, HK 946 7137
Tsang, Kwong Yin Kowloon, HK 1 0

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