Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of ground fault indication
Patent
1994-09-01
1998-04-14
Regan, Maura K.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of ground fault indication
324772, 324547, 361 30, G01K 3134, H02H 706
Patent
active
057396930
ABSTRACT:
A method is specified for detecting ground faults on the conductors of an electrical machine, in which method the conductors of the machine are biased with respect to ground by means of an injection voltage (Ui). An optimum utilization of the injection transformer (5) is achieved when the injection signal (Ui) comprises in the transmission period (S) a square-wave signal which switched over periodically between a positive and a negative maximum and has at the start and at the end of the transmission period (S) a quarter-period either of the positive or of the negative maximum.
REFERENCES:
patent: 3657555 (1972-04-01), Hoffman
patent: 3678377 (1972-07-01), Chiffert
patent: 3934194 (1976-01-01), Paprocki
patent: 4151460 (1979-04-01), Seese et al.
patent: 4224652 (1980-09-01), Fiorentzis
patent: 4789817 (1988-12-01), Asakura et al.
patent: 4916402 (1990-04-01), Kouan et al.
patent: 5473497 (1995-12-01), Beatty
patent: 5508620 (1996-04-01), Pfiffner
H. Ungrad; Schutztechnik in Elektroenergiesystemen, Springer-Verlag Berlin, Heidelberg u. s., 1991, S.211-215.
Asea Brown Boveri AG
Regan Maura K.
LandOfFree
Method for detecting ground faults on the conductors of an elect does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting ground faults on the conductors of an elect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting ground faults on the conductors of an elect will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-638775