Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1997-10-24
2000-06-27
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
361 59, G01R 3108, H02H 300
Patent
active
060811234
ABSTRACT:
During a first test phase, the device, after detecting the presence of a load, enables the nature of the load to be identified. For this, a control circuit connects the load to an AC main power system, while limiting the current in the load. The device measures several tens of samples of instantaneous values of the load voltage and current during a limited number of half-waves of an AC sine signal and determines the load impedance and the current/voltage phase shift. These characteristics, possibly with complementary parameters derived from the voltage and current measurements, enable the nature of the load to be identified. During a second test phase, the control circuit applies pulses limited in voltage to the load and detects possible short-circuit, differential or overload faults.
REFERENCES:
patent: 4362986 (1982-12-01), Burke et al.
patent: 4857826 (1989-08-01), Graham
patent: 5448492 (1995-09-01), Kolomyski et al.
patent: 5561376 (1996-10-01), Moore et al.
patent: 5839093 (1998-11-01), Novosel et al.
patent: 5910875 (1999-06-01), Tian et al.
8078 Proceedings of the IEEE, Dec. 1992, No. 12, "Noninstrusive Appliance Load Monitoring," by George W. Hart, pp. 1870-1891.
IBM Technical Disclosure Bulletin, Apr. 1976, vol. 18, No. 11, "Skipping Chopper Cycles in Switching Regulator," by R. Yeager, pp. 3737-3738.
Clausse Christine
Hanchin Pascal
Kasbarian Jean-Marc
Tian Simon
Ballato Josie
Kobert Russell M.
Schneider Electric SA
LandOfFree
Device for preventive detection of faults with identification of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for preventive detection of faults with identification of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for preventive detection of faults with identification of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1787369