Abstract: An electrical connector may include a connector body having a passageway therethrough. The connector body may include a first layer adjacent the passageway, a second layer surrounding the first layer, and a third layer surrounding the second layer. The third layer may be arranged in three spaced apart portions with first and third portions to be connected to a reference voltage so that the second portion floats at a monitor voltage for the electrical connector. The first and third layers may have a relatively low resistivity, and the second layer may be an insulator having a relatively high resistivity. At least one of the layers preferably includes a thermoplastic elastomer (TPE) material. A monitor point may extend outwardly from the second portion of the third layer, and a cover may also be included.

Abstract: An electrical device, includes a housing having an inner bore with a longitudinal axis, and outer and inner engagement members. The outer engagement member is received in the inner bore of the housing, and is rotatable with respect to the housing about the longitudinal axis. The inner engagement member is rotatably supported within the outer engagement member, and has external threads for engaging an electrical interface of a piece of electrical equipment.

Abstract: A cable connector, connector apparatus and method for introducing fluid to a cable. The cable connector, connector apparatus and method configured to form an electrically resistive barrier between components internal to the connector and the environment surrounding the connector after the introduction of the fluid. In one embodiment, a connector comprises a chamber adapted to affix a cable internal to the chamber, wherein the chamber is in fluidic communication with an injection port. The connector further comprises a valve operable to restrict fluid from entering the injection port from the chamber when a fluid source discontinues the introduction of fluid into the injection port. In another embodiment, a method of the present invention involves the application of an insulating material into an injection port of a connector following the application of a dielectric fluid, thereby forming an electrically resistive barrier between components internal to the connector and the external environment.

Abstract: An electrical connector including a housing with an inner bore, a first end and a second end opposite the first end. The second end has an opening that provides access to the inner bore. A piston is received within the inner bore of the housing and includes a first sleeve and a second sleeve, the first and second sleeves being coaxial and slidably engaged in a telescoping arrangement. The first and second sleeves are movable between a retracted position and an extended position by sliding the first and second sleeves with respect to one another within the inner bore of the housing. A contact element is disposed on the second sleeve and movable with it between first and second axially spaced positions within the inner bore.

Abstract: An inexpensive device for bus coupling between enclosed switchboards with an insulating gas sealed therein has a simple structure and requires a shorter time for installation. The bore shape of a connection port for a coupling bus in a T-shaped bushing is a conical shape having a diameter that increases outwardly. The coupling bus is covered with an insulating rubber member, and a conductive layer is provided on an outer peripheral surface of the insulating rubber member, and grounded. Both ends of the coupling bus that are inserted into the connection ports are formed to have shapes that fit to the conical connection ports.

Abstract: A connector having an elongated, multi-chamber, corrosion resistant, insulating, plastic housing provides for connecting a flexible power cable to equipment associated with a fixed device. One end of the housing is bolted to the fixed device. The opposite end and a central location of the housing have entrances for receiving bushings that may have a flexible power cable connected thereto. A floating adapter bushing is located between the busing and a recess in order to accommodate thermal expansion and contraction which may occur between equipment carrying the adapter and recess. The housing may include a vacuum interrupter or other suitable device. A plurality of the housings may be stacked together in order to provide for making combinations of selected parts and cables on a basis of unique requirements at a specific location.

Abstract: A high voltage electrical connector (50) interconnects sources of energy, such as transformers and circuit breakers, to distribution systems and the like via a high voltage cable (37). The high voltage electrical connector (50) includes an access cavity (58) providing access to the interior of the electrical connector. The access cavity (58) may be fitted with an insert plug (20) or an insert injection plug (120). The inserts (20, 120) include a conductive shield (36, 136) to reduce the possibility of electrical discharges from the inserts.

Abstract: The invention provides a three-phase power cable plug-type connector, comprising a head body having at least two sockets, and plug-in bodies the number of which is identical with that of the sockets. The outsides of the head and plug-in bodes are insulated. The head body has on the inside thereof three intermediate conducting members. Each socket of the head body is provided therein with three insertion holes which are isolated from each other by insulating layers and assigned to the three intermediate conducting members, respectively. Each insertion hole has at its inner end a connecting seat connected to the corresponding conduction member and with an axial locking assembly. The plug-in body has three conducting plug rods and three electric-coupling devices which are isolated from each other by insulators, and further has a branch support sleeve for dividing three conducting wires.

Abstract: A bushing device being either a “bushing” comprising an external standard interface cone on one side and a conical shape at the opposite side, or a “bushing well” having a single hollow conical shape comprising an internal standard interface cone. The bushing device is to be hermetically mounted in a hole of an electrical equipment, insulated with oil fluid or gas, and is foreseen of a metallic fixing flange having a diameter larger than the diameter of this hole. The bushing device is adapted to interconnect an electrical distribution cable external to the equipment with a device internal to the equipment. The equipment is for instance a transformer, a switchgear, a capacitor or a motor. The bushing device is made of an elastomeric material containing an anti-migratory additive, whilst the metallic fixing flange is preferably made of stainless steel adapted to be welded to the wall of the equipment.

Abstract: A connector for connecting a power cable with solid insulation to medium-voltage equipment comprising a connection device arranged in an angular housing. The connector comprises a screwable pin contact which is connected to the cable core. The device comprises a guide sleeve, fixed in the angular housing, with an extension made in the shape of a jaw, into which sleeve the cable core is inserted, and a clamping block, into which the pin contact is threaded. The inner end of the pin contact makes contact with the jaw such that, when tightening the pin contact, the cable core is squeezed between the clamping block and the jaw. The angular housing comprises an outer semiconducting layer, the end of which, connecting onto the cable, is capable of being folded up. The connector is removable fixed to the medium-voltage equipment with a clamping device which is arranged in one piece of resilient wire.

Abstract: The anti-flashover ring of the present invention includes a substantially cylindrical body having an outer surface with a plurality of passageways thereon. Each of the passageways pass from one of the sidewalls through the body to the other of the sidewalls of the ring. The passageways function to provide fluid communication between the atmosphere surrounding an accessory product such as a bushing insert and the interior of a connector mounted thereon when the connector is being pulled off the bushing insert. The fluid communication prevents a vacuum from forming between the connector and the bushing insert that can lead to a flashover between an electrical probe in the connector and a ground shield of the bushing insert. The anti-flashover ring is also configured to provide an indication to the operator installing the connector of when the connector is fully installed on the bushing insert.

Abstract: Loadbreak connectors which are modified to reduce the probability of flashover upon disassembly operation of a loadbreak bushing insert from a power cable elbow connector. The loadbreak bushing insert and power cable elbow connector are mated with an interference fit between an elbow cuff and a transition shoulder portion of the loadbreak bushing insert. The bushing insert is provided with vents to vent a cavity formed between the elbow cuff and the transition shoulder portion of the bushing insert with ambient air to avoid a decrease in pressure within the connection region and avoid a decrease in the dielectric strength of the air therein thus preventing flashover. Preferably, the vents are provided on an elbow seating indicator band formed of a bright contrasting color on the bushing insert which, in addition to venting the cavity, serves to indicate whether the loadbreak connector is improperly assembled.

Abstract: An electrical coupling part comprising a conductive coupling member, an inner conductive layer surrounding the coupling member, an insulating layer surrounding the conductive layer, and an elastic protective sleeve which comprises at least one cylindrical portion adjacent to an end of the insulating layer and a conical portion adjacent to the cylindrical portion, the protective sleeve further comprising, at an end remote from the cylindrical portion, an orifice of greater diameter than the cylindrical portion.

Abstract: The present invention aims to obtain a simplified connection system for high voltage power cables having ratings up to 400 KV and above. There is obtained a common cable connection system for all accessories and interconnection. The connection system uses a generally applicable interface (4, 5, 6; 13, 14, 15; 30, 40) for interconnection with a number of different apparatus and includes a cable termination (30) consisting of an elastomeric body (36), integrated therein a stress relief device (34), a connector shield (35), an insulation having a conical interface surface (37) and an outer conductive screen (39) and a rigid insulator (41) having a conical interface surface (42) corresponding to the interface surface (37) of the cable termination (30).

Abstract: The present invention aims to obtain a simplified connection system for high voltage power cables having ratings up to 400 KV and above. There is obtained a common cable connection system for all accessories and interconnection. The connection system uses a generally applicable interface (4, 5, 6; 13, 14, 15; 30, 40) for interconnection with a number of different apparatus and includes a cable termination (30) consisting of an elastomeric body (36), integrated therein a stress relief device (34), a connector shield (35), an insulation having a conical interface surface (37) and an outer conductive screen (39) and a rigid insulator (41) having a conical interface surface (42) corresponding to the interface surface (37) of the cable termination (30).

Abstract: A novel protective cap or elbow connector comprises a semi conductive insert which includes an additional volume of air which surrounds energized portions of the elbow connector or protective cap beyond what is necessary to accommodate a female bushing. During separation of the elbow connector or protective cap from the female bushing, the semiconductive insert stretches, which increases the volume of the interior space between the elbow connector or protective cap and the female bushing. Because the additional volume of air is provided, the reduction in pressure during separation is lessened, so that the dielectric strength of the air surrounding energized portions of the elbow connector or protective cap is maintained at a higher level. The increased dielectric strength of the air significantly reduces the possibility of a flashover occurring during separation of the elbow connector or protective cap from the female bushing.

Abstract: A novel male connector for an electrical connector assembly comprises an elastic housing which includes a recess for receiving the end of a female connector. When the male and female connectors are connected, a cavity is formed between the female connector and the recess of the male connector. Along the length of the recess, a rigid member is provided in the male connector which prevents the recess from stretching substantially when the male connector is disconnected from the female connector. Because the recess is prevented from stretching, the air pressure in the cavity between the male connector and the female connector remains relatively high during disconnection. The dielectric strength of the air in the cavity, which is a function of pressure, also remains high, so that the possibility of flashover is substantially eliminated.

Abstract: To provide durable elbow seating indicator for high voltage elbow on a high voltage bushing a band of highly contrasting color is formed on or added to an annular recess on the conductive jacket of the bushing.

Abstract: A cap type connector assembly includes a cap and an opposite terminal receiving tower. The cap receives a terminal fitting therein and has an entry opening for the high-voltage cable at one end thereof and an open casing for inserting the terminal receiving tower at the other end thereof. The open casing of the cap has a tubular portion covering the terminal fitting therein and a locking hook inside the open casing. The terminal receiving tower has a receiving portion at its fore end and a locking projection formed in its outer periphery surface. The receiving portion receives the inner tubular portion and the locking hook engages with the locking projection to seal the terminal receiving tower. The tubular portion of the cap may have an external shape of a truncated cone and the receiving portion of the terminal receiving tower may have a forwardly divergent, conical inner surface.

Abstract: A slip-fit electrical connector for a threaded transformer stud has a stepped or key type stud hole which includes an oversize unthreaded circular hole on top and a slightly smaller intersecting hole on the bottom. The bottom hole has threads matching those of the stud and a jam screw forces the threaded stud into intimate contact with the threads of the smaller hole, such contact extending over a substantial arc. The connection provides a tight and improved electrical connection having simplicity of installation.

Abstract: A connector in which the sliding movement of a movable contact member is stabilized, thereby securing a positive electrical connection. In the connector of the invention, a hollow connection terminal is fitted in a connector housing, and a coil spring and the slidable, movable contact member are received in this connection terminal. When the two connectors are fitted together, the coil spring urges the movable contact member toward a front end of the connector, thereby providing a sufficient contact load. A resilient, electrically-conductive contact band is provided in a gap between an outer peripheral surface of the movable contact member and an inner peripheral surface of the connection terminal. The connection terminal and the movable contact member are electrically connected together through this contact band, and this contact band prevents the movable contact member from being displaced in a direction perpendicular to the direction of fitting of the connection (that is, the axial direction).

Abstract: Apparatus and methods for reducing the risk of flashover during loadbreak operations of insulated separable connectors. In one aspect, the flashover distance for an electrical connector assembly is increased by supplementing exposed conductive portions of the male connector with insulated portions such that energized points on the energized connector are placed a greater distance away from the nearest ground plane on the complimentary connector. The additional insulation compensates for reductions in dielectric strength of the air occurring during separation of the male connector from the female connector. Also, the semi-conductive ground shield of the bushing is supplemented by an insulating sleeve. The insulative sleeve effectively removes a common ground plane to which an arc might tend during a flashover. In another aspect, a substantial airtight seal is prevented between elastomeric seals of the female connector and the probe of the male connector.

Abstract: The cable connection is provided for a metal-encapsulated, gas-insulated, high-voltage switching installation. It has a connection enclosure (23) which surrounds connecting parts which are connected to the active parts of the gas-insulated, high-voltage switching installation, and cable connection encapsulation (18) which is connected to the connection enclosure (23) and surrounds a cable termination (14) with an end bolt (15). In addition, it has an electrically conductive connecting piece which is inserted between the end bolt (15) and the connecting parts. It is intended to create a cable connection for a metal-encapsulated, gas-insulated, high-voltage switching installation, which cable connection makes it possible to fit and remove the high-voltage cable easily and quickly and makes it possible to ground this cable reliably and in a manner which can be installed easily.

Abstract: The electrical connector of the present invention includes an electrically conductive sleeve having a passage therethrough and an elastomeric housing molded therearound. After the molding of the housing around the sleeve, a contact element is disposed within the passage of the sleeve for engagement with the contact member of another connector. An arc snuffer housing and arc snuffer are attached to one end of the contact element for guiding the contact member toward the contact element and for evolving an arc-quenching gas in response to an arc being struck between the contact member and the contact element. The contact element includes a piston member responsive to the evolved gas for jointly displacing within said passage the arc snuffer and contact element toward the contact member. A support member is provided within the sleeve for reciprocably supporting the piston member of the contact element.

Abstract: The electrical connector of the present invention includes an electrically conductive sleeve having a passage therethrough and an elastomeric housing molded therearound. After the molding of the housing around the sleeve, a contact element is disposed within the passage of the sleeve for engagement with the contact member of another connector. An arc snuffer housing and arc snuffer are attached to one end of the contact element for guiding the contact member toward the contact element and for evolving an arc-quenching gas in response to an arc being struck between the contact member and the contact element. The contact element includes a piston member responsive to the evolved gas for jointly displacing within said passage the arc snuffer and contact element toward the contact member. A support member is provided within the sleeve for reciprocably supporting the piston member of the contact element.

Abstract: A device electrically interconnects a high voltage cable to a bushing of a deadfront electrical apparatus or switchgear. The device comprises a feed-through bushing and a separate U-member. The U-member can be installed onto, or removed from, the bushings without having to disconnect the ground. A driver mechanism applies a force to the U-member at a location substantially midway between two parallel legs of the U-member for installing or removing the U-member without cocking of the legs. The U-member carries female contacts which are engageable with male contacts of the bushings.

Abstract: A method and apparatus for permanently boiling a 200 AMP cable to a bushing well stud and permitting a second cable to be selectively connected or removed. A bushing well stud extender is added to a bushing well stud and one arm of a T-shaped housing with reinforcement is placed within the bushing well. A high voltage cable with a connector having an unthreaded aperture in its lug is placed within the central vertical leg in line with the second end of the bushing well stud extender. An insert placed in the second arm has a threaded stud to fix the cable lug between the extender and the insert. The free end of the insert has loadbreak contacts and is shaded to receive an elbow connected to a second high voltage cable.

Abstract: A load separable connection is provided, including a loadbreak elbow having a contact probe, and a bushing into which the contact probe is received in a tulip contact therein. An ablative insert, including a projecting lip extending over the outer circumference of the tulip contact at the end thereof, is provided within bushing. The insert helps extinguish arcs created during live connection of the elbow over the bushing, and also helps physically block the access of the arc to the bushing components surrounding the tulip contact.

Abstract: An improved, failure-resistant, low mechanical stress electrical connector bushing (10) is provided which includes an elongated, central metallic conductor rod (12) with an insulative epoxy body (14) cast about the central rod (12). The rod is of substantially constant diameter throughout its length, and includes a male connection end (16) and an opposed female connection end (18). The connection end (18) presents an upset, integral, cold-forged, radially expanded terminal portion (20) having a diameter greater than the constant diameter rod (12), and presents a butt end face (24). Stress analysis confirms that the bushing (10) develops reduced, mechanical thermally induced stresses, as compared with a prior design.

Abstract: The electrical connector of the present invention includes an electrically conductive sleeve having a passage therethrough and an elastomeric housing molded therearound. After the molding of the housing around the sleeve, contact element is disposed within the passage of the sleeve for engagement with the contact member of another connector. An arc snuffer housing and arc snuffer are attached to one end of the contact element for guiding the contact member toward the contact element and for evolving an arc-quenching gas in response to an arc being struck between the contact member and the contact element. The contact element includes a piston member responsive to the evolved gas for jointly displacing within said passage the arc snuffer and contact element toward the contact member. A support member is provided within the sleeve for reciprocably supporting the piston member of the contact element.

Abstract: Disclosed is an electrical bushing connector (10) designed to complete a power circuit connection to a transformer or the like typically employed in a primary power distribution system. The connector will also afford capability to switch high power electrical loads. The connector will mate with and make electrical connection with a loadbreak terminator (50) as used in such systems so that an electrical circuit carrying high currents at elevated voltages may be broken in the field without harm to the service personnel making and breaking the connection. Additionally, the connector can safely connect high energy fault currents. The connector allows the design to be compatible with existing interchangeability standards. The connector is electrically isolated from the environment prior to the terminator being inserted into the bushing connector to complete a circuit.

Abstract: The insulated standoff bushing is used for terminating a connector probe connected to a high voltage circuit. The standoff bushing includes an insulated body having a bore for receiving a shielded housing. The shielded housing in turn has an aperture for receiving a contact which is secured within the aperture. The contact is in the form of a spring having opposed sides with contact pads. The connector probe is inserted into the aperture of the shield housing and passes between the opposed contact pads for the dissipation of current into the insulated standoff bushing.

Abstract: Devices for use with high voltage system components for the safe expulsion of conductive moisture within such components include elbow and T-shaped connector bodies composed of insulating elastomeric bodies covered with conductive elastomer layers. The horizontal legs include all components normally found in such components. The bore of the vertical leg provides a circuitous passage from the horizontal leg to a container or the soil for the collection of such moisture. The circuitous path prevents the moisture from leaving as a stream and the grounded metal cap at the vertical leg extremity discharges any charge carried by the moisture. The circuitous path can be provided by modules each having a curved, linear or combined path such that the total path is longer than the length of the vertical leg. A vacuum access port can provide a means to draw out the moisture if gravity is insufficient to withdraw the moisture from the high voltage system components.

Abstract: A novel adapter for interfacing vintage oil fuse cutout devices with modern high-voltage cable terminations embodying a modern-standard bushing well at one end and a conductive member for mating with a cable entrance terminal of the cutout at the other end, and with mechanical (threaded) coupling to the device.

Abstract: The grounding stud assembly for grounding electrical equipment comprises a grounding stud having one end for connection to a grounding clamp and an opposite end for connnection to a bus system at either a bus splice joint or cable termination. A cover is positioned over the grounding clamp receiving end and over an insulated elongated portion of the grounding stud for insulating the grounding stud to prevent inadvertent discharge into the environment. The cover comprises an annular ring for engagement with an annular retaining collar positioned on the elongated portion for securing together the cover and grounding stud. The cover includes an eyelet for facilitating removal of the cover from a safe working distance.

Abstract: This separable electrical connector module, which is movable through an operating stroke and is adapted to couple with a mating module, comprises: (a) a connector member including a copper portion containing a hole having a central longitudinal axis and internal threads surrounding the axis, and (b) a copper contact rod having one end that is externally threaded to provide external threads that mate with said internal threads and an opposite end adapted to engage a contact within the mating module.

Abstract: A connector for connecting a high voltage electrical cable to a high voltage electrical terminal. A generally L-shaped elbow housing of a resilient insulating material with a central bore therethrough provides a cable receiving leg and a terminal receiving leg. A fastening means captivated within the terminal receiving leg, but free to rotate, is operated by an external tool inserted through a selectively capped access to join a terminated high voltage cable inserted through the closely fitting bore of the cable receiving leg to a terminal inserted in the terminal receiving leg. The fastening means engaging its captivating lock acting to assist in the assembly or disassembly of connector to said terminal.

Abstract: An electrical bushing for connection with an electrical apparatus is disclosed. The electrical bushing includes a bushing well which defines an internal cavity, and an electrical conductor having a first end for electrical connection with the electrical apparatus and having a second end extending within the internal cavity. A replaceable stud is electrically connected to the second end of the electrical conductor, and the bushing well further includes a guide flange. The guide flange extends within the internal cavity around the second end of the electrical conductor such that it is spaced from the second end, and guides the stud into connection with the second end of the electrical conductor.

Abstract: A media injection fitting for the insertion or removal of a media from the interior of a high voltage separable connector component having an access to the interior of the component. The fitting is comprised of a central body portion having a passage from an exterior side surface to the bore of a pin extending beyond the fitting for insertion into the bore of the access. A skirt extends from one end of the body portion so proportioned and configured as to be positionable upon the outer surface of the component access with a locking means on the interior surface of the skirt to fix the fitting upon the access. A pulling eye extends from the second end of the body portion to permit installation and removal of the fitting from the surface of the access. A coupling on the exterior side surface connected to the passage permits the insertion or removal of a media from the component or the venting of gases contained therein.

Abstract: A high-voltage test terminal for interconnection between high-voltage power lines and the bushing stud member of a transformer or reactor. An insulator component of the terminal is placed in compression rather than tension, the terminal having a substantially reduced moment arm to withstand angular forces which are created upon interconnection between the power lines and the stud member. Metallic end fittings for the insulator serve to maintain the insulator in permanent compression and provide ready disconnection of the bus bars of the terminal for determination of induced electrical currents such as by Doble testing. The insulator is mounted horizontally between the end fittings and between the power lines in substantially parallel and horizontal alignment therewith, and eliminates the torsional stresses which have been generated previously with upright post-type insulators.

Abstract: Electrical apparatus comprising a housing, a conducting member rotatably supported by the housing and adapted to provide a current path and to threadedly engage another electrical apparatus, and a clutch for transmitting a limited amount of torque from the housing to the conducting member.

Abstract: An electrical apparatus comprising a container adapted to contain an electrical mechanism, the container including a wall having an outer surface and having therethrough a bore, a bushing including a contact adapted to be connected to the electrical mechanism, a portion extending through the bore, and a surface facing the outer surface of the wall and having therein an endless recess, the recess surrounding the portion and having a volume, an endless gasket located in the recess, surrounding the portion, and having a volume when the gasket is uncompressed that is less than the volume of the recess, and studs for securing the bushing to the container and for compressing the gasket between the bushing and the outer surface of the container.

Abstract: A high voltage cable is fixed to the single leg of a 600-Amp "T" connector having a first of its cross bar arms mounted upon an insulating bushing fixed to a wall of the apparatus housing it is to serve. Spaced apart from such insulating bushing and mounted upon the same wall is an apparatus bushing to which is connected a bushing extender. An "h" shaped link member is employed to couple the cable via the other of its "T" connector cross bar arms to the apparatus bushing via the bushing extender. One of the short arms of the link member contains a pin/socket arrangement to make an electrical connection with the cable. The remaining short arm contains a screw-operated member operated by a tool inserted through the single long arm to make and break electrical and mechanical connections between the link member and the bushing extender. When removed, the link member not only interrupts the circuit but provides a visual indication thereof.

Abstract: The present invention relates to a transformer secondary buss adapter having a rigid member constructed of an electrically conducted material wherein the top end of the member is substantially flat on two sides and has a hole therethrough. A threaded stud is attached to the other end thereof and has a threaded nut thereon for connecting a buss bar thereto. The transformer secondary buss adapter is used to obviate the need for splicing when an old style shorter transformer is replaced by a taller, newer model.

Abstract: The invention is the provision of an access to the interior of a high voltage separable connector component by providing a projection of insulating elastomeric material integral with the insulating material of the body of the component and in engagement with the conductive elastomeric material shield of such component. A bore extends through the projection from a free, remote face to the component interior. The bore can be straight walled and if desired can be fitted at its remote end with appropriate fittings to permit external devices or internals to interact with the elements within said component body.

Abstract: A series of lanced sections are provided at the end of a movable female contact assembly in a loadbreak bushing insert to limit its extent of travel during fault closure conditions and prevent its unwanted removal from the insert housing. A locking ring is added ahead of the lanced sections to cause same to become locks by displacement from their normal positions making resetting of the female contact assembly impossible and providing a visual indication that the bushing has been involved in a fault closure situation.

Abstract: An apparatus bushing is fixed to a support wall or the wall of the apparatus housing and is electrically coupled to the apparatus within. A high voltage cable is fixed to the single leg of a 600-Amp "T" connector and is supported only by a bracket extending from said apparatus bushing to one of the "T" legs. A removable pin-and-socket applied link member selectively couples the remaining "T" leg to the apparatus bushing whereby power passes between the apparatus and high voltage cable only when said link is present and isolates said cable and apparatus when it is absent. A novel operating assembly assures proper contact between the link sockets and the pins of the apparatus bushing extender and the 600-Amp "T" connector and can be arranged to positively separate the link assembly. The operating assembly can also be used to install and remove a cap assembly when the electrical link is not in place.

Abstract: An electrical elbow connection between a high voltage cable and a conductive bushing on a piece of electrical power distribution equipment, such as a transformer, is provided with a telescoping, rotating connector. This allows relative movement between the probe and the cable, which facilitates connecting the elbow to the bushing and allows for relative movement between the two over their service life.

Abstract: A high voltage connector is provided for interconnecting a power cable to an apparatus such as a transformer. The cable is securely coupled to the connector, which is then mounted on to the transformer bushing. The bushing and cable electrical contacts inside the connector are spaced apart, and electrical connection is achieved therebetween by inserting a continuity plug into a socket of the connector. Electrical isolation between the cable and transformer may be effected without physically moving either piece of equipment, by removing the continuity plug and replacing it with another plug that introduces sufficient electrical insulation between the equipment contacts to allow operating and test voltages to be applied to one of the cable and transformer without flashover occurring to the other of said pieces of equipment. Other interchangeable plugs may provide earthing for a selected one of the pieces of equipment, also without requiring physical movement of the equipment.

Abstract: A simplified electrical high voltage loadbreak bushing insert connector is disclosed which provides an improved electrical current path between a bushing well and a male probe contact during fault and activated closure while eliminating the usual prior art internal conductive sleeve contact. A solid contact, directly coupled to a bushing well stud, electrically engages a tubular extension of the movable female contact assembly during movement of the assembly over its entire range. In a first group of embodiments, contact is made with the interior of the tubular extension while in others with the exterior. Various stop member arrangements are disclosed to limit movement of the female contact assembly and of joining the solid contact to the insert body.