Fluid-filled capacitor with pressure interrupter means and internal compressible air chamber
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 6, 2001
Grant Date -
N/A
app pub date -
Jan 5, 2000
filing date -
Jan 5, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A capacitor has a polymer housing and a wound metallized film capacitive element received in the housing, with leads connected to terminals on the cover of the housing through a pressure responsive interrupter assembly. An air chamber is provided in the housing, confining a compressible volume of air, and insulating fluid fills the remaining volume of the housing, substantially immersing the capacitive element. The air chamber is advantageously defined by a piston slidably mounted in the housing. Upon a high pressure condition caused by failure of the capacitive element, the volume of air is compressed to cushion the onset of the high pressure, protecting the case from rupture prior to operation of the pressure responsive interrupter assembly.
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