Patent ID: 8553384
Filing Date: 2013-10-08
Classification: H01F

Abstract:
1. A fault current limiter, comprising: an input terminal electrically connecting to a power source that provides a load current; an output terminal electrically connecting with a load circuit that draws the load current; a magnetically saturable core; an AC coil wound about a longitudinal portion of the core for carrying the load current between the input terminal and the output terminal; an enclosure for housing the magnetically saturable core and AC coil, wherein the enclosure includes a cooling means in addition to a dielectric material; and at least one DC coil for inducing a magnetic field in at least the portion of the core and extending about a longitudinal intermediate zone that receives the core and the AC coil, wherein the field magnetically biases the core such that the AC coil moves from a low impedance state to a high impedance state in response to one or more characteristics of the load current.