Invention Grant
US07646575B2 Manually-controlled arc flash energy reduction system and method for circuit breaker trip units
有权
用于断路器跳闸单元的手动控制灭弧能量减少系统和方法
- Patent Title: Manually-controlled arc flash energy reduction system and method for circuit breaker trip units
- Patent Title (中): 用于断路器跳闸单元的手动控制灭弧能量减少系统和方法
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Application No.: US11683291Application Date: 2007-03-07
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Publication No.: US07646575B2Publication Date: 2010-01-12
- Inventor: Helmut Weiher , Richard C. Fleischer , Jeffrey W. Patterson
- Applicant: Helmut Weiher , Richard C. Fleischer , Jeffrey W. Patterson
- Applicant Address: US OH Chagrin Falls
- Assignee: Utility Relay Co., Ltd.
- Current Assignee: Utility Relay Co., Ltd.
- Current Assignee Address: US OH Chagrin Falls
- Agency: Pearne & Gordon LLP
- Main IPC: H02H3/00
- IPC: H02H3/00 ; H02H9/08

Abstract:
A circuit protection system includes a normal mode and a maintenance mode. A current sensor senses current in the circuit. An enclosure includes an access panel that is movable between a closed position and open position. A circuit breaker is mounted within the enclosure. An electronic trip unit is in communication with the current sensor and controls interruptions of the current by the circuit breaker based on a trip setting. An interface device is accessible when said access panel is closed and allows selections of the normal and maintenance modes. A display, which is in communication with both of the user interface device and the electronic trip unit, monitors the interface device and transmits data to the trip unit that is based on the selected mode. The display receives data from the trip unit and displays information based on the received data. The display is viewable when the access panel is closed. The trip unit changes the trip setting when said maintenance mode is selected to reduce potential arc flash energy.
Public/Granted literature
- US20070211400A1 MANUALLY-CONTROLLED ARC FLASH ENERGY REDUCTION SYSTEM AND METHOD FOR CIRCUIT BREAKER TRIP UNITS Public/Granted day:2007-09-13
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