Circuit protection device with timed negative half-cycle...

Details Circuit protection device with timed negative half-cycle... Circuit protection device with timed negative half-cycle...

2005-12-27

2005-12-27

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Electromechanical switching device

Circuit breaker

C324S509000

Reexamination Certificate

active

06980005

ABSTRACT:
The present invention is directed to an electrical wiring protection device for use in coupling an AC power distribution system to at least one electrical load. The device includes an automated self-test circuit coupled to the AC power distribution system. The automated self-test circuit is configured to generate at least one simulated fault signal during a first predetermined half-cycle of AC power. A detector circuit is coupled to the automated self-test circuit. The detector circuit generates a detection signal in response to the at least one simulated fault signal. An interval timing circuit is coupled to the test circuit. The interval timing circuit is configured to enable the automated self-test circuit to generate the at least one simulated fault signal during a first predetermined interval and not enable the test circuit during a subsequent second predetermined interval. The first predetermined interval and the second predetermined interval are recurring time intervals.

REFERENCES:
patent: 3930187 (1975-12-01), Misencik
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4742422 (1988-05-01), Tigges
patent: 5459630 (1995-10-01), MacKenzie et al.
patent: 5600524 (1997-02-01), Neiger et al.
patent: 5715125 (1998-02-01), Neiger et al.
patent: 6052265 (2000-04-01), Zaretsky et al.
patent: 6111733 (2000-08-01), Neiger et al.
patent: 6262871 (2001-07-01), Nemir et al.
patent: 6313642 (2001-11-01), Brooks
patent: 6437700 (2002-08-01), Herzfeld et al.
patent: 6580344 (2003-06-01), Li
patent: 6611406 (2003-08-01), Neiger et al.
patent: 6674289 (2004-01-01), Macbeth
patent: 6697237 (2004-02-01), Duve
patent: 6873158 (2005-03-01), Macbeth
patent: 2002/0135957 (2002-09-01), Chan et al.
patent: 2002/0181175 (2002-12-01), Baldwin
patent: 2003/0016477 (2003-01-01), Li
patent: 2003/0086220 (2003-05-01), Nelson
patent: 2004/0004795 (2004-01-01), Chan et al.

Affiliated with

Also associated with

Rating

Circuit protection device with timed negative half-cycle... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit protection device with timed negative half-cycle..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit protection device with timed negative half-cycle... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3511919