Cornell-Dubilier Electric Corporation

Other

William M Robinson

Edward Lobo

The disclosed capacitors include an assembly of a wound capacitor section having at least one metallized electrode, being prone to develop explosive pressure when a fault occurs, and an interrupter in series with the capacitor section. The interrupter cooperates mechanically with the wound section to rupture the interrupter in response to fault-induced internal pressure, the whole being contained in an enclosure.

Protected capacitors

A dielectric composition containing a major amount of a bis (C.sub.6-12 alkyl) phthalate such as diisononyl phthalate, a minor amount of butylated monochloro diphenyl oxide, and a small effective amount of an epoxy stabilizer, and an electrical device such as a capacitor comprising metal foil electrodes separated by paper sheet and/or plastic film impregnated with said composition.

Dielectric composition and device containing same

Wound capacitors have a resistive strip included as an integral part of the capacitor section or roll. End areas of the resistive strip are in physical and electrical contact with the electrode strips, respectively, the rest of the strip discharging electrical energy stored in the capacitor when it is disconnected from a source of power. The portion of the resistive strip between the end areas is electrically insulated from the electrode strips so that current flows along the strip between the end contact areas. In one embodiment, the resistive strip extends about the winding, and in a second embodiment the resistive strip extends transverse to the electrode strips and loops around the edges of the electrode strips and the separating dielectric strips at the end of the capacitor section. If the capacitors are impregnated, the impregnant improves the ability of the resistive strip to withstand the voltage that is applied to the unit and to withstand and dissipate the heat generated in the strip.

Growing community of inventors

New Bedford, MA, United States of America

William M Robinson