发明授权
- 专利标题: Protective device with automated self-test
- 专利标题(中): 具有自动自检功能的保护装置
-
申请号: US12955581申请日: 2010-11-29
-
公开(公告)号: US08125228B2公开(公告)日: 2012-02-28
- 发明人: Jeffrey C. Richards , David A. Finlay, Sr. , Bruce F. Macbeth
- 申请人: Jeffrey C. Richards , David A. Finlay, Sr. , Bruce F. Macbeth
- 申请人地址: US NY Syracuse
- 专利权人: Pass & Seymour, Inc.
- 当前专利权人: Pass & Seymour, Inc.
- 当前专利权人地址: US NY Syracuse
- 代理机构: Bond Schoeneck & King
- 代理商 Daniel P. Malley
- 主分类号: G01R31/02
- IPC分类号: G01R31/02 ; G01R31/14 ; H02H3/00
摘要:
The present invention is directed to an electrical wiring device that includes at least one sensor that provides a sensor output signal corresponding to electrical perturbations propagating on the plurality of line terminals or the plurality of load terminals. A protective circuit assembly configured to detect a fault condition when the sensor output signal substantially corresponds to at least one predetermined fault criterion and generate a trip actuation signal in response thereto. A solenoid coil is configured to generate a trip actuation force in response to the trip actuation signal. A circuit interrupter assembly includes movable contacts configured to be driven into a tripped state in response to the trip actuation force. An automatic fault simulation circuit is configured to generate a self-test signal without execution of software code. The self-test signal is generated such that it is sensed by the at least one sensor if the at least one sensor is operational. An end-of-life detection circuit is coupled to the protective circuit assembly. The end-of-life detection circuit is configured to monitor the protective circuit assembly without execution of software code. The end-of-life detection circuit is configured to substantially inhibit the trip actuation force when the protective circuit assembly detects the fault condition and generates the trip actuation signal in response to the self-test signal. The end-of-life detection circuit is configured to generate an end-of-life response if the protective circuit assembly does not respond to the self-test signal within a predetermined period of time.
公开/授权文献
- US20110148423A1 PROTECTIVE DEVICE WITH AUTOMATED SELF-TEST 公开/授权日:2011-06-23
信息查询