Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a dielectric fluid comprising a vegetable oil or vegetable oil blend. Methods of retrofilling electrical equipment with vegetable oil based dielectric fluids also are provided.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a dielectric fluid comprising a vegetable oil or vegetable oil blend. Methods of retrofilling electrical equipment with vegetable oil based dielectric fluids also are provided.

Abstract: In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a dielectric fluid comprising a vegetable oil or vegetable oil blend. Methods of retrofilling electrical equipment with vegetable oil based dielectric fluids also are provided.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.

Abstract: A system and method according to which one or more sliders are actuated in order to, for example, operate one or more switches such as, for example, one or more circuit breaker switches.

Abstract: An intelligent electronic device (IED) is connected to interact with a power system to provide protection, control, and/or monitoring capabilities for the power system. The device includes a power system interface circuit for communicating with the power system and a processor coupled to the power system interface circuit. The device further includes memory storing software instructions performed by the processor for receiving electronic mail from a remote system through a communication link and for automatically transmitting electronic mail to the remote system through the communication link. The electronic mail may include information relating to operation of the power system or to operation of the intelligent electronic device.

Abstract: A locking switch includes a shaft that engages one or more electromechanical switches and a knob that is secured to the shaft such that when the knob is rotated, a rotary motion is imparted to the shaft and to the electromechanical switches engaged by the shaft. The locking switch also includes a lock ring having multiple slots and a lock lever that is attached to the knob and that is captured in one of the slots in the lock ring to prevent rotation of the knob.

Abstract: A connector assembly includes a nut, a first member, a second member, and a third member. The connector assembly is used for coupling a conduit to an electrical device that includes a body having an end with an outer edge and a threaded exterior surface. The nut includes a first angled end, a second threaded end, and an inner cavity between the first angled end and the second threaded end. The nut is configured to be threadably attached to the threaded exterior surface of the body. The first member includes a first edge, a second edge, and is positioned within the cavity and encloses the conduit when the conduit is connected to the body. The second member includes a first edge, a second edge, and is positioned within the cavity and encloses the conduit when the conduit is connected to the body. The third member includes a first edge, a second edge, and is positioned within the cavity and encloses the conduit when the conduit is connected to the body.

Abstract: A clamp-on isolation transformer for an airfield lighting fixture in an airfield lighting system includes a first portion configured to receive a portion of a primary conductor of a primary current loop and a second portion configured to receive another portion of the primary conductor of the primary current loop at a location opposed to the location of the first portion. An attachment mechanism is configured to attach the first portion to the second portion such that the first and second portions surround the primary conductor. A winding is coupled to the first portion and is configured to be attached to an airfield lighting fixture.

Abstract: In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a dielectric fluid comprising a vegetable oil or vegetable oil blend. Methods of retrofilling electrical equipment with vegetable oil based dielectric fluids also are provided.

Abstract: An electrical switchgear device includes a conductor, a base, and a current sensor positioned to detect current in the conductor and attached to the base using a support element. The device also includes an apparatus mounted to the base to interrupt current through the conductor when a signal from the current sensor indicates a predetermined condition. A housing positioned on the base encapsulates the current sensor, the support element, the current interrupting apparatus, and a portion of the conductor.

Abstract: Electrical conduits and conductors are sealed using a chamber that is configured for attachment to a conduit through which at least one conductor runs, such that the at least one conductor also runs through the chamber. A port permits access to the chamber to inject a sealing compound into the chamber, and a vent permits access to a portion of the conductor that is located between portions of the conductor that are surrounded by the sealing compound after the sealing compound is injected into the chamber.

Abstract: A surge arrester includes a stack of components having at least one varistor. Each component has end faces, at least one of which is mechanically bonded to an end face of another component such that the combined components of the stack define a single, monolithic structure that serves as both an electrically-active element and a mechanical support element of the surge arrester. The surge arrester also includes an insulative housing surrounding the stack of components. The stack of components is capable of withstanding current pulses having magnitudes of 65 kA and durations of {fraction (4/10)} microseconds without significant degradation in operating performance of the stack of components.