摘要:
A capacitor provides a plurality of selectable capacitance values, by selective connection of six concentrically wound capacitor sections of a capacitive element each having a capacitance value. The capacitor sections each have a respective section element terminal at a first end of the capacitive element and the capacitor sections have a common element terminal at a second end of the capacitive element. A pressure interrupter cover assembly is sealingly secured to the open end a case for the element and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitive element to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals. Deformation of the cover caused by failure of the capacitor element breaks at least some of the frangible connections sufficient to disconnect the capacitive element from an electric circuit in which it is connected. A cover insulation barrier mounted on the deformable cover, has a barrier cup substantially surrounding the common cover terminal and a plurality of barrier fins each extending radially outwardly from the barrier cup, and deployed between adjacent section cover.
摘要:
An apparatus includes a measurement device for measuring two capacitances. The apparatus also includes a display module that simultaneously displays at least two numerical values based on the measured capacitances.
摘要:
A capacitor provides a plurality of selectable capacitance values, by selective connection of six concentrically wound capacitor sections of a capacitive element each having a capacitance value. The capacitor sections each have a respective section element terminal at a first end of the capacitive elements and the capacitor sections have a common element terminal at a second end of the capacitive element. A pressure interrupter cover assembly is sealingly secured to the open end a case for the element and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitive element to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals. Deformation of the cover caused by failure of the capacitor element breaks at least some of the frangible connections sufficient to disconnect the capacitive element from an electric circuit in which it is connected. A cover insulation barrier mounted on the deformable cover, has a barrier cup substantially surrounding the common cover terminal and a plurality of barrier fins each extending radially outwardly from the barrier cup, and deployed between adjacent section cover.
摘要:
A single encapsulated wound capacitor unit (10) is made up of a number of sub-capacitors (12, 14, 16). The sub-capacitors are connected in parallel by insulated jumpers (30, 32) which extend outwardly from the capacitor encapsulant (36). A repairman may adjust the capacitance as required by cutting one or more of the exposed jumpers (30, 32) prior to installing the capacitor.
摘要:
A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal. A pressure interrupter cover assembly is sealingly secured to the open end of case for the elements and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitor section to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals. Deformation of the cover caused by failure of the capacitor element breaks at least some of the frangible connections sufficient to disconnect the capacitive element from an electric circuit in which it is connected. A cover insulation barrier mounted on the deformable cover, has a barrier cup substantially surrounding the common cover terminal and a plurality of barrier fins each extending radially outwardly from the barrier cup, and deployed between adjacent section cover terminals.
摘要:
The specification teaches a method for producing a wound capacitor section wherein the core of the winding is employed as an integral mechanical mount for the completed capacitor, and also the capacitor produced thereby. In one embodiment, the core is longer than the capacitor section and the excess core is threaded for use in mounting the capacitor. In another embodiment, a flexible tie strap is threaded through the hollow core and encapsulated therein.
摘要:
A metallized capacitor is formed by winding at least two thin metallized dielectric films into a cylinder, the ends of which are sprayed or metallized and connected to externally mounted terminals. A protective interrupter is provided by connecting a very thin electrically conductive strip to one of the metallized ends and running the conductive strip over the surface of the outside metallized film to one of the externally mounted terminals. The capacitor so formed is embedded in heat cured epoxy so that the strip is integrated within the rigid epoxy case. Accordingly, the strip will tear or separate on any swelling or cracking of the epoxy case due to a faulty capacitor and thereby interrupt the power supply. The conductive strip may be scored at intervals along the length thereof in order to enhance its shearing or tearing ability.
摘要:
A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal. A pressure interrupter cover assembly is sealingly secured to the open end of case for the elements and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitor section to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals. Deformation of the cover caused by failure of the capacitor element breaks at least some of the frangible connections sufficient to disconnect the capacitive element from an electric circuit in which it is connected. A cover insulation barrier mounted on the deformable cover, has a barrier cup substantially surrounding the common cover terminal and a plurality of barrier fins each extending radially outwardly from the barrier cup, and deployed between adjacent section cover terminals.
摘要:
A capacitor provides a plurality of selectable capacitance values, by selective connection of six concentrically wound capacitor sections of a capacitive element each having a capacitance value. The capacitor sections each have a respective section element terminal at a first end of the capacitive element and the capacitor sections have a common element terminal at a second end of the capacitive element. A pressure interrupter cover assembly is sealingly secured to the open end a case for the element and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitive element to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals. Deformation of the cover caused by failure of the capacitor element breaks at least some of the frangible connections sufficient to disconnect the capacitive element from an electric circuit in which it is connected. A cover insulation barrier mounted on the deformable cover, has a barrier cup substantially surrounding the common cover terminal and a plurality of barrier fins each extending radially outwardly from the barrier cup, and deployed between adjacent section cover.
摘要:
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.