Electrical switching apparatus and method employing acoustic...

Details Electrical switching apparatus and method employing acoustic... Electrical switching apparatus and method employing acoustic...

2008-07-22

2008-07-22

Nguyen, Tai T (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S636120, C340S636170, C340S638000, C340S644000, C340S650000, C340S652000, C340S664000, C324S527000, C324S528000, C324S529000, C361S042000, C361S093200

Reexamination Certificate

active

07403129

ABSTRACT:
A circuit breaker includes a first lug and second and third acoustic lugs electrically connected to a power circuit. Separable contacts are electrically connected in series between the first lug and the second acoustic lug. An operating mechanism opens and closes the separable contacts. A first acoustic sensor is coupled to the second acoustic lug and senses a first acoustic signal from the second acoustic lug. A second acoustic sensor is coupled to the third acoustic lug and senses a second acoustic signal from the third acoustic lug. The first and second acoustic signals are operatively associated with a power circuit fault. A current sensor senses a current flowing between the first and second lugs. A circuit inputs the sensed acoustic signals and the sensed current and detects and distinguishes a parallel arc fault or a series arc fault from the sensed acoustic signals and the sensed current.

REFERENCES:
patent: 3892920 (1975-07-01), Kolm
patent: 4165482 (1979-08-01), Gale
patent: 4316139 (1982-02-01), Root
patent: 5224006 (1993-06-01), MacKenzie et al.
patent: 5341191 (1994-08-01), Crookston et al.
patent: 5352984 (1994-10-01), Piesinger
patent: 5493618 (1996-02-01), Stevens et al.
patent: 5521840 (1996-05-01), Bednar
patent: 5608328 (1997-03-01), Sanderson
patent: 5691869 (1997-11-01), Engel et al.
patent: 5805399 (1998-09-01), Pacholok
patent: 6215408 (2001-04-01), Leonard et al.
patent: 6522228 (2003-02-01), Wellner et al.
patent: 6522509 (2003-02-01), Engel et al.
patent: 6542056 (2003-04-01), Nerstrom et al.
patent: 6625550 (2003-09-01), Scott et al.
patent: 6707652 (2004-03-01), Engel
patent: 6710688 (2004-03-01), Wellner et al.
patent: 6720872 (2004-04-01), Engel et al.
patent: 6734682 (2004-05-01), Tallman et al.
patent: 6777953 (2004-08-01), Blades
patent: 6798211 (2004-09-01), Rockwell et al.
patent: 2002/0038199 (2002-03-01), Blemel
patent: 2002/0130668 (2002-09-01), Blades
patent: 2003/0037615 (2003-02-01), Madaras et al.
patent: 2003/0201780 (2003-10-01), Blades
patent: 2004/0027749 (2004-02-01), Zuercher et al.
patent: 2005/0017731 (2005-01-01), Zuercher et al.
Innovative Dynamics, Inc., “Wire Chafing Sensor”, http://www.idiny.com/chafing.html, 2004, 3 pp.
Maroni, C.-S. et al., “Series Arc Detection in Low Voltage Distribution Switchboard Using Spectral Analysis”, International Symposium on Signal Processing and its Applications (ISSPA), 2001, pp. 473-476.

Affiliated with

Also associated with

Rating

Electrical switching apparatus and method employing acoustic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical switching apparatus and method employing acoustic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical switching apparatus and method employing acoustic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2756223