Title:
アーク故障検出回路遮断器システム
Document Type and Number:
Japanese Patent JP4234682
Kind Code:
B2
Abstract:
An arc-fault detecting circuit-breaker system is operable with a protected electrical circuit that operates with direct current or alternating current. A normally closed line circuit breaker has an electrical input and an electrical output, and an electrical line connects the electrical output to the protected-element input. The system includes a detector of the rate of change with time of a current flow in the electrical line. An activating element alternating current voltage source has an alternating current output. A circuit-breaker activating element is operable responsive to the detector. The circuit-breaker activating element is electrically connected between the electrical line and the alternating current output. The circuit breaker activating element is a normally open switch that closes to establish a connection between the electrical line and the alternating current output in the event that the detector detects a rate of change of current with time in excess of a permitted maximum rate-of-change value.
Inventors:
McMahon, Roy Pee
Amlhein, Gregory Es
Reinhart, James A.
Amlhein, Gregory Es
Reinhart, James A.
Application Number:
JP2004562573A
Publication Date:
March 04, 2009
Filing Date:
December 23, 2003
Export Citation:
Assignee:
RAYTHEON COMPANY
International Classes:
H02H3/08; H02H3/44; H01H73/00; H01H83/02; H02H1/00; H02H3/00; H02H3/16
Domestic Patent References:
| JP2003536353A | ||||
| JP7153366A | ||||
| JP8228428A |
Foreign References:
| US6532140 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Otsuka Naruhiko
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Otsuka Naruhiko