Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-04-18
2006-04-18
Wu, Daniel (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S638000, C340S649000, C340S650000, C361S017000
Reexamination Certificate
active
07030769
ABSTRACT:
A circuit breaker with a thermal/magnetic trip device incorporates a monitor that senses the temperature of the bimetal and the amplitude of the load current to distinguish between a thermal and a magnetic trip. If the temperature of the bimetal is above a selected value when the circuit breaker trips, a “THERMAL” trip light emitting diode (LED) is energized, while a high load current at the time of a trip lights a “MAG” trip LED. The monitor also energizes an “ARC” LED in response to an arc fault signal from an AFCI at the time of trip, or a “GRD” LED in response to a ground fault trip. If a trip sensor, which monitors load voltage does not detect opening of the circuit breaker contacts when an arc fault or ground fault signal is generated, the corresponding LED is flashed to indicate the failure to trip. The monitor also has a “SURGE” LED to indicate a voltage surge in the protected distribution system as detected by a surge detector built into the circuit breaker. The trip and surge indications can be communicated to a remote location.
REFERENCES:
patent: 4642733 (1987-02-01), Schacht
patent: 5038246 (1991-08-01), Durivage, III
patent: 5220479 (1993-06-01), Fraisse
patent: 5351038 (1994-09-01), Goldberg
patent: 5546266 (1996-08-01), Mackenzie et al.
patent: 5847913 (1998-12-01), Turner et al.
patent: 5875087 (1999-02-01), Spencer et al.
patent: 5926355 (1999-07-01), Matsko et al.
patent: 6018451 (2000-01-01), Lyke et al.
patent: 6122157 (2000-09-01), Gerlach
patent: 6212049 (2001-04-01), Spencer et al.
patent: 6222714 (2001-04-01), Hoffman
patent: 6239677 (2001-05-01), Ramakrishnan et al.
patent: 6552884 (2003-04-01), Kim et al.
patent: 2003/0202304 (2003-10-01), Canova et al.
patent: 05300617 (1993-11-01), None
Eaton Corporation
Hunnings Travis R.
Moran Martin J.
Wu Daniel
LandOfFree
Monitor providing cause of trip indication and circuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monitor providing cause of trip indication and circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitor providing cause of trip indication and circuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3602436