Invention Grant
US07898781B2 Arc fault detection apparatus employing a comparator with a continuously variable threshold
有权
电弧故障检测装置采用具有连续可变阈值的比较器
- Patent Title: Arc fault detection apparatus employing a comparator with a continuously variable threshold
- Patent Title (中): 电弧故障检测装置采用具有连续可变阈值的比较器
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Application No.: US12184297Application Date: 2008-08-01
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Publication No.: US07898781B2Publication Date: 2011-03-01
- Inventor: Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
- Applicant: Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
- Applicant Address: US MA Attleboro
- Assignee: Sensata Technologies Massachusetts, Inc.
- Current Assignee: Sensata Technologies Massachusetts, Inc.
- Current Assignee Address: US MA Attleboro
- Agent Russell E. Baumann
- Main IPC: H02H3/05
- IPC: H02H3/05 ; H02H3/08 ; H02H3/38
Abstract:
An arc fault detection apparatus that provides for better discrimination of electrical arcing events from nuisance loads. The arc fault detection apparatus includes an arcing sense circuit having a comparator circuit with a variable threshold voltage that varies continuously with the line voltage. The arc fault detection apparatus has reduced susceptibility to nuisance tripping in the presence of sudden changes in the load current that occur outside of a specified time window centered on each zero crossing point of the line voltage.
Public/Granted literature
- US20100027176A1 ARC FAULT DETECTION APPARATUS EMPLOYING A COMPARATOR WITH A CONTINUOUSLY VARIABLE THRESHOLD Public/Granted day:2010-02-04
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