| 摘要 |
<p>An exemplary current limiting device comprises first and second electrodes; a composite material between the first and second electrodes, the composite material comprising: (a) a binder, and (b) an electrically conductive filler; a thin layer which provides an inhomogeneous distribution of resistance to the device; a web which reinforces the composite material; and a pressurizer for pressing the electrodes against the composite material; wherein the web is disposed in a volume of the composite material which does not include the thin layer. The current limiting device is simple and reusable, and can be tailored to a plurality of applications, including high voltage/current distribution systems, to protect sensitive components from high fault currents. The device has a robust structure which allows it to repeatedly withstand the high mechanical and thermal stresses which typically accompany switching events in high voltage/current circuits. The robust structure improves the lifetime of the device and provides impact resistance to the device. The device operates without relying on the PTCR effect to limit current.</p> |
