G - Physics
01
R
G01R 19/15 (2006.01) G01R 15/18 (2006.01) G01R 19/20 (2006.01) H01H 83/14 (2006.01)
Patent
CA 2138822
It is an object of the present invention to provide a sensitive DC current sensor which has a good detecting capability for a DC leakage breaker and the like, particularly, even for a micro-current variation with a simple construction, and is constituted such that, a hollow portion 52 which communicates in a circumferential direction through a detecting core 51 consisting of an annular soft magnetic material is formed, an excitation coil 53 which is wound in a circumferential direction is disposed in the hollow portion 52, and a detecting coil 54 which is wound in a toroidal shape around the detecting core 51 is disposed, whereby the detecting core 51 can be constructed to have a very good productivity, and by the effective arrangement of the excitation coil 53 and the detecting coil 54, effects by a coercive force peculiar to the soft magnetic material constituting the detecting core 51 and the effect of a leakage flux from the excitation coil 53 can be considerably reduced, for example, a micro-current of about 5 mA or lower can be detected very sensitively.
La présente invention a pour objet un ampèremètre pour courant continu de haute sensibilité pour la détection de courants de fuite et autres applications semblables, notamment pour la détection de microvariations de courant; de construction simple, le dispositif en question comporte une partie creuse (52) communiquant circulairement à travers un noyau de détection (51) constitué d'un corps ferromagnétique tendre, une bobine d'excitation (53) enroulée circulairement à l'intérieur de la partie creuse (52), et une bobine de détection (54)à toroïdale enroulée autour du noyau de détection (51); le noyau de détection (51) peut offrir une très bonne productivité et, en raison de la configuration de la bobine d'excitation (53) et de la bobine de détection (54), un champ coercitif propre au corps ferromagnétique tendre est produit.
Kirby Eades Gale Baker
Sumitomo Special Metals Co. Ltd.
LandOfFree
Dc current sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dc current sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dc current sensor will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2027528