Abstract: A gas mixture including at least a fluorinated nitrile, carbon dioxide and oxygen for use in electrical equipment is provided. The percentage of oxygen may be at least twice the percentage of the fluorinated nitrile. An additive gas may be present in the gas mixture. A switchgear unit having a gas-insulated compartment including a gas mixture including at least a fluorinated nitrile, carbon dioxide and oxygen is also provided. The percentage of oxygen may be at least twice the percentage of the fluorinated nitrile. An additive gas may be present in the gas mixture housed in the gas-insulated compartment.

Abstract: The disclosed concept includes a cooling device and method for enhancing cooling in an electrical or mechanical system. The system includes air therein for cooling the system. The cooling device includes a flexible elongated member having an inner core and an outer cover. The inner core is constructed of a batting material and the outer cover is constructed of a cloth material. The outer cover is at least partially sealed such that the inner core is contained within the outer cover. The flexible elongated member is positioned within a particular portion of the electrical or mechanical system and is utilized to form at least one air seal such that air is diverted away from an unintended path and toward an intended path for use in enhancing the cooling of an area wherein cooling is needed.

Abstract: An improved electrical disconnect apparatus includes a set of spaced apart conductors and a removable conductive element that is structured to extend between the conductors and to complete at least a portion of an electrical circuit that includes the conductors. The electrical disconnect apparatus is situated between an electrical network and a network protector. The conductors and the conductive element which extends therebetween are situated within the interior of a support that is sealed in order to permit the electrical disconnect apparatus to be in a submerged environment during use. The conductive element is retained by a key interlock wherein the key that enables removal of the conductive element is stored on the network protector and is only made available to the technician when the network protector has been switched to an OFF condition.

Abstract: An electrical disconnect apparatus includes a housing having a first conductor configured to electrically connect to a first external circuit and a second conductor configured to electrically connect to a second external circuit; and a connection device having an elongated portion structured to be inserted into and removed from the housing. The elongated portion of the connection device includes a fuse having a first conductive end portion and a second conductive end portion electrically connected by a fusible element. The fuse electrically connects the first conductor to the second conductor when the elongated portion of the connection device is inserted into the housing and electrically disconnects the first conductor from the second conductor when the elongated portion of the connection device is removed from the housing.

Abstract: An improved electrical disconnect apparatus includes a set of spaced apart conductors and a removable conductive element that is structured to extend between the conductors and to complete at least a portion of an electrical circuit that includes the conductors. The electrical disconnect apparatus is situated between an electrical network and a network protector. The conductors and the conductive element which extends therebetween are situated within the interior of a support that is sealed in order to permit the electrical disconnect apparatus to be in a submerged environment during use. The conductive element is retained by a key interlock wherein the key that enables removal of the conductive element is stored on the network protector and is only made available to the technician when the network protector has been switched to an OFF condition.