Method and a device for detecting an internal arc in a metal-clad electrical link
AssigneeALSTOM Holdings
InventorJean Marmonier
Life of this patent
Estimating the term…
Abstract
The invention relates to a method of detecting an internal arc in a metal-clad electrical link, wherein the rising edge of the internal pressure surge generated by the arc and propagating inside the cladding is detected at a fixed location along the cladding. The invention also relates to a device comprising at least one one-way detection unit constituted by a pressure sensor disposed outside the cladding and connected to the inside the cladding via a horn-shaped duct which slopes relative to the axis of the cladding, which has its mouth opening out in the cladding, and which has its tip connected to the pressure sensor.
Claims3
A device for detecting an internal arc in a metal-clad electrical link, the device comprising at least a first one-way detection unit for detecting a rising edge of an internal pressure surge generated by the internal arc and propagating inside a cladding of the electrical link, the one-way detection unit including a pressure sensor disposed outside the cladding and a tapered horn-shaped duct connected to the inside of the cladding and sloping in a direction relative to a longitudinal axis of the cladding, the horn-shaped duct having a mouth opening in the cladding, and a tip connected to the pressure sensor, wherein the one-way detection unit detects the rising edge of the internal pressure surge propagating only in the direction of sloping of the horn-shaped duct.
Dependencies are inferred from the claim text.