Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1981-12-21
1983-09-20
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361 58, 361111, 361 93, H02H 902, H02H 908
Patent
active
044059655
ABSTRACT:
A current limiting device for use with a circuit breaker in an electric power system utilizes mutual inductance variation between movable windings to limit current to safe levels. In the device, first and second coil windings are electrically connected for current flow therethrough and magnetically linked for mutual inductive coupling. The effective inductance of the connected coil windings is functionally related to the relative physical positioning of the coil windings. The coil windings are movable relative to one another, so as to provide for variation in the effective inductance of the two coils. Structure is provided for disposing the coils in an initial relative positioning, the structure being yieldable to a force produced between the coils due to a predetermined magnitude of current flow through the coils. The force produced between the coils acts to change the relative positioning of the coils, increasing the effective inductance, and thereby limiting the current therethrough. In an alternative arrangement, movement of the coils to designated positions of relative placement due to a predetermined magnitude of current flow therethrough may be utilized to open a set of electrical contacts or to trigger a conventional circuit breaker interrupting the circuit.
REFERENCES:
patent: 743887 (1903-11-01), Kitsee
patent: 3209114 (1965-09-01), McBrien
Weldon William F.
Woodson Herbert H.
Board of Regents University of Texas System
Eisenzopf Reinhard J.
LandOfFree
Current limiting device for overcurrent protection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Current limiting device for overcurrent protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current limiting device for overcurrent protection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-590790