WO2009126574A2 - Extender for a separable insulated connector - Google Patents
Extender for a separable insulated connector Download PDFInfo
- Publication number
- WO2009126574A2 WO2009126574A2 PCT/US2009/039658 US2009039658W WO2009126574A2 WO 2009126574 A2 WO2009126574 A2 WO 2009126574A2 US 2009039658 W US2009039658 W US 2009039658W WO 2009126574 A2 WO2009126574 A2 WO 2009126574A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connector
- extender
- conductive
- semi
- cable
- Prior art date
Links
- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 136
- 230000006835 compression Effects 0.000 claims abstract description 72
- 238000007906 compression Methods 0.000 claims abstract description 72
- 239000004020 conductor Substances 0.000 claims description 47
- 238000004891 communication Methods 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 229920002943 EPDM rubber Polymers 0.000 claims description 9
- 239000006229 carbon black Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 30
- 239000011810 insulating material Substances 0.000 description 16
- 230000005611 electricity Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/26—End pieces terminating in a screw clamp, screw or nut
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Definitions
- the invention relates generally to separable insulated connectors for electric power systems. More specifically, the invention relates to an extended separable insulated connector that can replace an existing separable insulated connector and to a method of installing the same in an electric power system.
- Separable insulated connectors provide an electric connection between components of an electric power system. More specifically, separable insulated connectors typically connect sources of energy - such as cables carrying electricity generated by a power plant - to energy distribution systems or components thereof, such as switchgears and transformers.
- FIG. 1 depicts a conventional T- body connector 100
- Figure 2 depicts a conventional elbow connector 200.
- the names of the two types of connectors describe their shapes.
- a cable 102 is inserted into the bottom of a conventional T-body connector 100.
- the cable 102 is first inserted into a cable adapter 104, which is then inserted into the T-body connector 100.
- Conventional separable insulated connectors often use cable adapters 104 to increase the variety of cables that can be used with the connector.
- Each cable adapter 104 can be designed to accept a range of cable widths, each width within the range being sufficiently narrow to fit within the opening provided in the cable adapter 104 and sufficiently wide to be secured within the opening in the cable adapter 104.
- Each separable insulated connector can then be designed to accept a range of cable adapter 104 widths, thereby enabling each separable insulated connector to accept a large range of cable widths.
- Conventional cable adapters 104 can include an insulating material 104a and a semi-conductive material 104b, as shown in Figures 1 and 2.
- the cable 102 connects to the T-body 100 at a compression connector 106, which crimps the cable 102, holding it in place and allowing power to transfer from the cable 102 to the T-body 100.
- the compression connector 106 is in turn connected to an output extension 108 within a bushing 110.
- the bushing 110 is connected to a switchgear, transformer, or other energy distribution component.
- Separable insulated connectors such as those shown in FIGS. 1 and 2 may need to be removed from the energy distribution system for a variety of reasons.
- One common reason is that the connectors sometimes fail, for example due to a power surge or a fault with the connection to the cable 102.
- Another reason is that the operators of the energy distribution system may want to change the type of switchgear or transformers to which the insulated connectors are connected, which could necessitate a change in the type of separable insulated connector required. Regardless of the reason for removing the separable insulated connectors, such removal and the subsequent replacement with another connector has traditionally been a difficult task.
- An alternative method of connecting a cable that has been cut to a separable insulated connector is to use a separable insulated connector with a longer body.
- a separable insulated connector with a longer body.
- Such a connector may be designed to be sufficiently long to reach a cable that a conventional separable insulated connector could not, while still being able to connect to the distribution component.
- manufacturing separable insulated connectors with longer bodies (and varying lengths) requires investing in new molds that would be used to manufacture the connectors with such an increased length. The production, purchase, installation, and use of these molds would thus result in a significant cost.
- a need in the art exists for replacing a separable insulated connector in an electric power system that addresses the disadvantages found in the prior art. Specifically, a need in the art exists for connecting a replacement separable insulated connector to a cable with a short length without the labor intensive and error prone process of splicing an extension to the cable. A need in the art also exists for connecting a cable with a short length to a separable insulated connector that has a body of a standard length, so as not to require the costly investment of new molds and processes for manufacturing separable insulated connectors with longer bodies.
- the invention provides an efficient and cost effective method and device for replacing a separable insulated connector in an electric power system, and providing an electric connection between a cable and power distribution components.
- the invention provides an extender for a separable insulated connector for connecting a cable that has been cut, or otherwise has a length insufficient to connect to a conventional separable insulated connector, to a power distribution system.
- the invention accomplishes this task without requiring either an extension cable to be spliced to the shortened cable or a separable insulated connector with a longer body.
- Molding an extender for a cable adapter for use with a T-body or elbow connector is an easier task than molding an extended T-body or elbow connector for several reasons.
- an extender may typically be smaller in size than T-body or elbow connector bodies, and such an extender may therefore be even smaller than an extended T-body or elbow connector body. If the body of the T-body or elbow connector were lengthened, a larger press and mold base would be required.
- an extender may typically have approximately cylindrical dimensions, as opposed to the shells of T-body or elbow connectors, which typically include additional sides, curves, holes, and angles, further complicating the design of the press and mold needed. Thus, manufacturing an extender may avoid the excessive financial and time investment in manufacturing longer T-body or elbow connectors.
- the invention provides an extender for a standard separable insulated connector, such as a T-body connector or an elbow connector with a size and shape associated with conventional T-body and elbow connectors.
- the extender can extend the effective length of the separable insulated connector, such that the extender can connect to a conventional cable adapter, which in turn connects to a shortened cable.
- the extender can include the same or similar interfaces for a cable adapter that a separable insulated connector has, and thus, a conventional cable adapter may be connected to the extender in the same manner in which conventional cable adapters can connect to conventional separable insulated connectors.
- the extender's length enables it to be connected to a conventional cable adapter, and then inserted into a standard sized T-body or elbow connector, which can then be connected to a switchgear, transformer, or other distribution component. Then, the shortened cable can be connected to the cable adapter. Alternatively, the shortened cable can be connected to the cable adapter before the separable insulated connector is connected to the distribution components.
- the extender for the separable insulated connector may include a compression connector (or any other type of suitable conductive connector) for accepting the shortened cable that is inserted into the cable adapter, a conductive rod connected to the compression connector for carrying electric power from the shortened cable to the T-body or elbow connector, and layers of semi-conductive material and insulating material.
- a "semi-conductive" material can refer to rubber or any other type of material that carries current, and thus can include conductive materials.
- a shortened cable can be inserted into the cable adapter, which then can be connected to the extender. More particularly, the shortened cable can be inserted such that, once the cable adapter is inserted into the extender, the shortened cable is attached to the compression connector of the extender. Then, the extender, with the cable adapter and shortened cable connected therein, may be inserted into a conventional T-body or elbow connector, which can be connected to energy distribution systems or components thereof, such as switchgears and transformers.
- the compression connector within cable adapters may be made of a conductive material.
- the compression connector should not touch any insulating material in the cable adapter because the insulating material could be damaged by the current passing through the compression connector. Air gaps between the compression connector and the insulating material could cause corona discharge if not shielded.
- the compression connector of the extender may be bordered by a layer of semi-conductive material.
- This semi-conductive material can contact a semi-conductive insert or faraday cage disposed within the T-body or elbow connector.
- the purpose of a faraday cage is to shield all gaps of air within the mating components (such as the cable/cable adapter and the compression connector) of the separable insulated connector, as these air gaps can cause corona discharge within the connector. This discharge can occur if there is a voltage drop across the air gaps, and the discharge can corrode the rubber materials often used to make the separable insulated connector.
- the faraday cage ensures that the various mating components have the same electric potential, and thus prevents corona discharge within the mating components.
- the layer of semi-conductive material in the extender can act as a faraday cage if it contacts the semi-conductive insert of the separable insulated connector and becomes energized by the semi-conductive insert.
- the semi- conductive material need not touch the compression connector disposed within the extender. For example, there may be gaps of air between the compression connector and semi- conductive material.
- the compression connector of the extender may contact a conductive rod, or any other suitable conductive material, for carrying electric power from the shortened cable to the T-body or elbow connector when the extender is connected to cable adapter and inserted into the T-body or elbow connector.
- the conductive rod may contact a compression connector within the T-body or elbow connector.
- the compression connector within the T-body or elbow connector may then contact an output extension, for providing electric power to a switchgear, transformer, or other energy distribution component to which the T-body or elbow connector is connected.
- the T-body or elbow connector may not include a separate compression connector, in addition to the compression connector of the extender. In such an embodiment, the conductive rod may contact an output extension within the T-body or elbow connector directly.
- Figure 1 is a cross-sectional side view of a conventional T-body connector with a conventional cable adapter disposed therein.
- Figure 2 is a cross-sectional side view of a conventional elbow connector with a conventional cable adapter disposed therein.
- Figures 3 is a cross-sectional side view of a T-body connector with an extender connected to a cable adapter disposed therein, according to an exemplary embodiment.
- FIG 3 is a cross-sectional side view of a T-body connector 300 with an extender 304 connected to a cable adapter 104 disposed therein, according to an exemplary embodiment.
- the cable adapter 104 disposed within the extender 304 can be similar or identical to the cable adapters 104 used with conventional T-body connectors 100.
- the T-body connector 300 includes many of the features and components associated with conventional T-body connectors 100.
- the T-body connector 300 includes an upper bushing section 310.
- the upper bushing section 310 of the T-body connector 300 includes a first opening 312 and a second opening 314.
- the first opening 312 can be used to attach the T-body connector 300 to a switchgear, transformer, or other energy distribution component to which the T-body connector 300 may be connected.
- a plug 316 or other similar bushing may be inserted into the first opening 312, and then the plug 316 may be inserted into an energy distribution component.
- the second opening 314 can be used as an access port to tighten a bolt that holds the plug 316 in the first opening 312 of the connector 300, to connect another device to the T-body connector 300, such as a device for measuring the electric flow through the T-body 300, or to connect the T-body 300 to another energy distribution component.
- the second opening 314 of the T-body 300 need not be connected to another device, and a protective cap may cover the second opening 314.
- the T-body connector 300 also includes a shell 318 and a semi-conductive insert 320, both of which comprise a semi-conductive material.
- the shell 318 and the semi-conductive insert 320 can be made from a semi-conductive mixture of ethylene propylene dienemonomer (EPDM) rubber and carbon black.
- the shell 318 of the T-body 300 may also include a ground wire tab 322 to which a wire 324 may be attached and grounded.
- the semi-conductive EPDM rubber in the shell 318 can provide ground shield continuity for the T-body 300, thereby providing deadfront safety for the shell 318.
- the grounded shell 318 of the T-body 300 allows for operators to touch the exterior of the T-body connector 300 safely.
- the T-body connector 300 may include a capacitive test point 326.
- the capacitive test point 326 may be molded on the shell 318 of the T-body 300.
- the capacitive test point 326 provides a location on which a fault indicating device, or other similar device, can be mounted to determine whether problems or irregularities exist with the electric power passing through the T-body connector 300.
- a protective cap 327 may be placed on the capacitive test point 326 when it is not in use.
- the T-body connector 300 also includes a layer of insulating material 328 between the shell 318 and the semi-conductive insert 320.
- the insulating material 328 also can include EPDM rubber. EPDM rubber serving as the insulating material 328 may not include carbon black or other conductive component, so that it may provide the necessary insulation and not conduct electricity.
- the T-body connector 300 shown in Figure 3 further includes a compression connector 306 that is connected to an output extension 308.
- the compression connector 306 can be similar or identical to the compression connector 106 used in conventional T-body connectors 100 utilizing conventional cable adapters 104.
- any other suitable conductive connector may be used in place of the compression connector 306.
- the compression connector 306 can be substantially disposed within an opening in the semi-conductive insert 320.
- the output extension 308 can be disposed within an upper bushing section 310 of the T-body connector 300.
- the compression connector 306 can include a protrusion 306a that extends from the semi-conductive insert 320 and contacts the output extension 308.
- the output extension 308 can contact the compression connector 306 within the semi-conductive insert 320.
- the output extension 308 can comprise any suitable conductive material. Upon installation of the T-body connector 300, the output extension 308 is in electric communication with - and can carry electric power to - any switchgear, transformer, or other energy distribution component to which the T-body connector 300 may be connected. As shown in Figure 3, in exemplary embodiments, the output extension 308 may contact a semi- conductive plug 316 or other bushing that has been inserted into the upper bushing section 310 of the T-body connector 300. The semi-conductive bushing or plug 316 then can be connected to the energy distribution component, thereby providing electric communication between the output extension 308 and the distribution component. In exemplary embodiments, as shown in Figure 3, the output extension 308 can comprise a threaded connection for connecting to the energy distribution components or the semi-conductive bushing or plug 316.
- the upper end of the compression connector 306 contacts the output extension 308.
- the lower end of the compression connector 306 disposed within the semi-conductive insert 320 can contact a conductive rod 330 or other suitable conductive material that carries electric power from an electric cable 302 connected to the cable adapter 104 and the extender 304.
- the conductive rod 330 can extend through the compression connector 306 and contact the output extension 308.
- the T-body connector 300 may not include an output extension 308, and instead, the conductive rod 330 can extend into the upper bushing section 310 of the T-body connector 300.
- the semi-conductive insert 320 can provide a shield around the compression connector 306, thereby preventing electricity passing through the compression connector 306 from damaging the insulating material 328. As shown in Figure 3, the semi-conductive insert 320 may, but need not, contact the compression connector 306 directly, as indicated by the presence of gaps of air between the compression connector 306 and the semi-conductive insert 320. Rather, the semi-conductive insert 320 needs only to provide semi-conductive material that is disposed between the insulating material 328 and the compression connector 306, thereby functioning as a faraday cage.
- the extender 304 can be inserted into the bottom end of the T-body connector 300.
- the extender 304 may include a conductive rod 330, such as a copper rod or any other suitable conductive rod or member, for carrying electricity from the shortened cable 302 to the T-body connector 300.
- the upper end of the rod 330 may contact the compression connector 306 disposed within the semi-conductive insert 320.
- the upper end of the rod 330 may comprise a terminal for contacting and connecting to the compression connector 306.
- the compression connector 306 also contacts the output extension 308 of the T-body connector 300, thereby providing electric communication between the rod 330 and the output extension 308.
- the T-body connector 300 may not include a compression connector 306, or any other conductive connector, disposed within the shell 318.
- a conductive rod 330 or other suitable conductive material that carries electric power from the shortened cable 302 may contact the output extension 308 directly.
- the rod 330 may comprise a terminal for contacting and connecting to the output extension 308 of the T-body connector 300.
- the extender 304 shown in Figure 3 further includes a conductive cable connector, such as a compression connector 332.
- the shortened cable 302 is inserted into the compression connector 332, which holds the shortened cable 302 securely, in a manner similar to the compression connector 106 used in conventional T-body connectors 100, such as the one shown in Figure 1.
- the extender 304 can include a channel 333 above the compression connector, through which the rod 330 can be inserted. Additionally, the extender 304 can include a support tube 335 within the channel 333, to help keep the channel 333 open and to help prevent it from collapsing.
- the lower end of the rod 330 receives electricity from the compression connector 332, which receives electricity from the shortened cable 302.
- the rod 330 and shortened cable 302 can be inserted into opposite ends of the conductive compression connector 332, thereby providing an electric connection between the rod 330 and cable 302.
- the shortened cable 302 may be stripped of a protective and/or semi-conductive sheath 302b to expose a conductive portion 302a of the cable 302, and then the conductive portion 302a of the shortened cable 302 may be inserted into the cable adapter 104, such that a portion of the cable 302 extends through an opening at the top of the cable adapter 104.
- the cable adapter 104 can be inserted into the extender 304, and the cable 302 can be inserted into — or otherwise connected to ⁇ the compression connector 332 of the extender 304.
- the conductive rod (such as the rod 330) disposed within the extender 304 may include the conductive cable connector (such as the compression connector 332).
- the rod 330 disposed within the extender 304 may be configured such that a cable 302 may be inserted therein.
- the extender 304 can comprise two semi- conductive layers 334, 336, as well as an insulating layer 338.
- the extender 304 can comprise an inner semi-conductive layer 336, an insulating layer 338, and an outer semi-conductive layer 334.
- the semi-conductive layers 334, 336 can be made from a mixture comprising EPDM rubber and carbon black or other suitable conductive material. In alternative exemplary embodiments, various other suitable materials can be used for the semi-conductive layers 334, 336.
- the inner semi-conductive layer 336 may surround or border the rod 330. Additionally, as with the semi-conductive insert 320 discussed previously and the compression connector 306 disposed therein, the inner semi-conductive layer 336 can provide a shield around the compression connector 332 and the rod 330, thereby preventing electricity passing through the compression connector 332 and the rod 330 from damaging the insulating material 338. The inner semi-conductive layer 336 may, but need not, contact the compression connector 332 and the rod 330 directly, as long as it is disposed between the insulating material 338 and the compression connector 332 and the rod 330.
- the inner semi-conductive layer 336 of the extender 304 is configured to contact the semi-conductive insert 320 of the T-body connector upon insertion of the extender 304 into the T-body connector 300. Electrical contact between the semi-conductive insert 320 and the inner semi-conductive layer 336 provides the necessary shield around the compression connector 332 the rod 330 and the compression connector 332. In alternative embodiments, the inner semi-conductive layer 336 can contact the conductive rod 330 and/or either of the compression connectors 306, 332, whether in addition to or instead of contacting the semi-conductive insert 320 to energize the inner semi-conductive layer 336 so that it can act as a faraday cage.
- the inner semi-conductive layer 336 does not make electrical contact with the semi-conductive insert 320, conductive rod 330, or the compression connector 306, then there may be a significant voltage drop between the inner semi-conductive layer 336 and the compression connector 332 or the rod 330. Such a significant voltage drop could cause damage to the insulating layer 338 and could disturb the electricity flow from the shortened cable 302 through the T-body connector 300.
- the insulating layer 338 of the extender 304 is disposed between the inner semi-conductive layer 336 and the outer semi-conductive layer 334.
- the insulating layer 338 can comprise the same material as the insulating material 328 used in the T-body connector 300.
- the insulating layer 338 can comprise EPDM rubber without carbon black or other conductive material mixed therein.
- the insulating layer 338 may comprise various other suitable insulating materials known in the art.
- the outer semi-conductive layer 334 of the extender 304 may border or surround the insulating layer 338. In exemplary embodiments, as shown in Figure 3, the outer semi-conductive layer 334 may extend further below the insulating layer 338 and the inner semi-conductive layer 336.
- the outer semi-conductive layer 334 is configured to contact the shell 318 of the T-body connector 300 upon insertion of the extender 304 into the T-body connector 300. Electrical contact between the shell 318 and the outer semi-conductive layer 334 provides for the outer semi-conductive layer 334 to provide ground shield continuity for the exposed portion of the extender 304. If the outer semi-conductive layer 334 does not make electrical contact with the shell 318, then it will not be connected to the ground wire 324 discussed previously.
- the outer semi-conductive layer 334 is configured to contact the semi-conductive material 104b of the cable adapter 104 upon insertion of the cable adapter 104 into the extender 304. Electrical contact between the shortened cable 302 and the semi- conductive material 104b of the cable adapter 104, which in turn is in electric contact with the outer semi-conductive layer 334, can provide ground shield continuity for the exposed portion of the extender 304, cable adapter 104, and the shortened cable 302. If the outer semi-conductive layer 334 does not make electrical contact with the shortened cable 302, then the shortened cable 302 may not be connected to the ground wire 324 discussed previously.
- the extender 304 can be of approximately cylindrical shape (though, as shown, the diameter of the cylindrical shape can increase and decrease through the body of the extender 304) and have an interface into which the cable adapter 104 can be inserted.
- such an extender 304 can have an inner diameter (measuring the width of the hole through which the cable adapter 104 is inserted) and an outer diameter (measuring the width of the extender 304).
- the inner semi-conductive layer 336 can run along the inner diameter, and additionally extend to the outer diameter towards the top of the extender 304, as shown in Figure 3. This geometry and configuration can be helpful to ensure that the inner semi- conductive layer 336 contacts the semi-conductive insert 320 disposed within the shell 318.
- the conventional T-body connector 100 After an operator of a power distribution system has made a decision to replace a conventional T-body connector 100 connected to a cable 102 via a cable adapter 104 on its lower end and a switchgear, transformer, or other energy distribution component on its upper end, the conventional T-body connector 100 must be removed. To do so, the source of power to the cable 102 may be turned off. Removal of the T-body connector 100 can begin with cutting a portion of the cable 102, thereby freeing the lower end of the conventional T-body 100. The upper end of the conventional T-body 100 can be unplugged or otherwise disconnected from the energy distribution component to which it was connected either before or after cutting the cable 102. In an exemplary embodiment, the conventional T-body connector 100 and cable adapter 104 can be discarded at this point.
- the shortened cable 302 may be too short to connect to a replacement conventional T-body connector 100 that will be connected to the energy distribution component. Instead, the shortened cable 302 can be inserted into a replacement cable adapter 104, which may have approximately the same size and dimensions as the discarded cable adapter 104. Then, the cable adapter 104 can be inserted into an extender 104.
- the extender 304 selected can have dimensions appropriate for accepting the cable adapter 104 with the shortened cable 302 disposed therein, and for being disposed and held securely within the T-body connector 300 upon insertion.
- the shortened cable 302 prior to being inserted into the replacement cable adapter 104, can be stripped of a portion of insulating material commonly found on such cables 302, thereby exposing a portion of the conductive part of the cable 302. The exposed portion of the shortened cable 302 then can be inserted into the cable adapter 104 such that the cable 302 extends through an opening in the cable adapter 104 and then connects to the compression connector 332 disposed within the extender 304.
- the compression connector 332 can hold the cable 302 securely, and can comprise a conductive material so that it can receive electricity carried by the shortened cable 302.
- the upper end of the compression connector 332 can contact a rod 330, such as a copper rod or any other suitable conductive rod 330 or structure.
- the compression connector 332 and rod 330 can be connected such that once power to the system is turned on and electricity flows through the cable 302, the electricity carried by the shortened cable 302 and received by the compression connector 332 can be conducted to the rod 330.
- the extender 304 is inserted into the T- body connector 300.
- the extender 304 may be inserted into the T-body connector 300 before the shortened cable 302 is inserted into the cable adapter 104, and then the cable adapter 104 is inserted into the extender 304.
- Other variations in the order of these steps are possible, and will be known to one of ordinary skill in the art having the benefit of the present disclosure.
- the extender 304 is inserted into the T-body connector 300 such that the rod 330 of the extender 304 contacts the compression connector 306 disposed within the semi-conductive insert 320 of the T-body connector 300.
- the compression connector 306 is, in turn, in electrical contact with the output extension 308 of the T-body connector 300.
- the inner semi-conductive layer 336 of the extender 304 contacts the semi-conductive insert 320 of the T-body connector 300, and the outer semi-conductive layer 334 of the extender 304 contacts the shell 318 of the T-body connector 300 and the semi- conductive material 104b of the cable adapter 104.
- These connections provide for a shield around the compression connectors 306, 332 disposed within the T-body connector 300 and extender 304, and allow for the exterior of the T-body connector 300, extender 304, and cable adapter 104 to be grounded upon proper connection of a ground wire 324 to the ground wire tab 322.
- the T-body connector 300 is then connected to the switchgear, transformer, or other energy distribution component to which the conventional T-body connector 300 had been connected.
- one end of a semi-conductive plug 316 or other bushing may be inserted into an opening 312, 314 in the upper bushing section 310 of the T- body connector 300, and then the other end of the semi-conductive plug 316 may be inserted into the energy distribution component.
- the energy distribution component should be in electric communication with the T-body connector 300, the output extension 308 disposed therein, the compression connector 306 disposed within the semi- conductive insert 320, the rod 330, the compression connector 332 disposed within the extender 304, and the shortened cable 302.
- the source of power to the shortened cable 302 can be turned on, thereby providing electricity from the cable 302, through the cable adapter 104, extender 304 and T-body connector 300, and to the energy distribution component, or in the opposite direction.
- extender 304 described with respect Figure 3 is shown inserted into a T-body connector 300, extenders utilizing similar principles and technologies can be inserted into a variety of other separable insulated connectors.
- extenders can be used with elbow connectors, splices, or other separable insulated connectors.
- Such separable insulated connectors can include a semi-conductive insert or faraday cage and a shell comprising semi- conductive material, insulating material between the semi-conductive insert and the shell, and a compression connector disposed within the semi-conductive insert.
- an extender can be configured to connect to the separable insulated connector according to the same or similar manner in which the extender 304 is connected to the T-body connector 300 described previously.
- the extender can comprise an inner semi-conductive layer, an insulating layer, and an outer semi-conductive layer.
- Exemplary extenders can be configured such that when they are inserted into an elbow connector, splice, or other separable insulated connector, the inner semi-conductive layer can contact the semi-conductive insert, and the outer semi-conductive layer can contact the shell of the separable insulated connector.
- Such exemplary extenders also can include a conductive rod.
- extenders that can be used with a variety of separable insulated connectors may include any other suitable conductive structure for carrying electricity from a cable to the connector. One end of the conductive rod can receive electricity from the cable.
- Such extenders may further include a variety of conductive connectors, such as a compression connector, which can contact the conductive rod and the cable, thereby providing a connection between them.
- an extender 304 that connects to a separable insulated connector on its top side and to a cable adapter 104 on its bottom side
- a first extender can be inserted into a separable insulated connector, and then instead of a cable adapter being inserted into the first extender, a second extender can be inserted therein. Then, a cable adapter can be inserted into the second extender.
- any number of extenders may be connected to each other, thereby further increasing the ability of the extender to provide a connection between a separable insulated connector and a shortened cable.
- the top side of an extender 304 can have interfaces identical or similar to the top side of a cable adapter 104, and the bottom side of an extender 304 can have interfaces identical or similar to the bottom side of a separable insulated connector such as a T-body connector 300.
- an extender 304 for a separable insulated connector - such as a T-body connector 300, elbow connector, splice, or any other suitable connector - that can be used with a cable adapter 104 (or other extender 304) disposed therein.
- a separable insulated connector - such as a T-body connector 300, elbow connector, splice, or any other suitable connector - that can be used with a cable adapter 104 (or other extender 304) disposed therein.
Abstract
Removal of a conventional separable insulated connector from an electric power system often results in a shortened electric cable. An extender for a separable insulated connector enables the separable insulated connector to connect to a shortened cable. A conventional cable adapter is inserted into the extender, which includes a conductive connector for accepting the shortened cable and a conductive rod for carrying electric power from the shortened cable to the separable insulated connector. The extender also includes an inner semi-conductive layer that borders the conductive rod and compression connector, an outer semi-conductive layer, and a insulating layer between the two semi-conductive layers. The extender is inserted into a separable insulated connector, which is then connected to the electric power system.
Description
EXTENDER FOR A SEPARABLE INSULATED CONNECTOR RELATED PATENT APPLICATIONS
[0001] This patent application is related to co-pending U.S. Patent Application No. 12/082,719, entitled "Method Of Using An Extender For A Separable Insulated Connector," filed April 11, 2008, the complete disclosure of which is hereby fully incorporated herein by reference.
TECHNICAL FIELD
[0001] The invention relates generally to separable insulated connectors for electric power systems. More specifically, the invention relates to an extended separable insulated connector that can replace an existing separable insulated connector and to a method of installing the same in an electric power system.
BACKGROUND
[0002] Separable insulated connectors provide an electric connection between components of an electric power system. More specifically, separable insulated connectors typically connect sources of energy - such as cables carrying electricity generated by a power plant - to energy distribution systems or components thereof, such as switchgears and transformers.
[0003] Two common types of separable insulated connectors that are used for this purpose are T-body connectors and elbow connectors. Figure 1 depicts a conventional T- body connector 100, and Figure 2 depicts a conventional elbow connector 200. As can be seen from Figures 1 and 2, the names of the two types of connectors describe their shapes.
[0004] Conventional elbow connectors 200 and T-body connectors 100 are installed into electric power systems according to similar steps. Thus the connections described and illustrated herein with respect to a conventional T-body connector 100, such as the one shown in Figure 1, are largely applicable to a conventional elbow connector 200, such as the one shown in Figure 2.
[0005] As illustrated in Figure 1, a cable 102 is inserted into the bottom of a conventional T-body connector 100. The cable 102 is first inserted into a cable adapter 104, which is then inserted into the T-body connector 100. Conventional separable insulated connectors often use cable adapters 104 to increase the variety of cables that can be used with
the connector. Each cable adapter 104 can be designed to accept a range of cable widths, each width within the range being sufficiently narrow to fit within the opening provided in the cable adapter 104 and sufficiently wide to be secured within the opening in the cable adapter 104. Each separable insulated connector can then be designed to accept a range of cable adapter 104 widths, thereby enabling each separable insulated connector to accept a large range of cable widths. Conventional cable adapters 104 can include an insulating material 104a and a semi-conductive material 104b, as shown in Figures 1 and 2.
[0006] Once the cable adapter 104 is inserted into the T-body connector 100, the cable 102 connects to the T-body 100 at a compression connector 106, which crimps the cable 102, holding it in place and allowing power to transfer from the cable 102 to the T-body 100. The compression connector 106 is in turn connected to an output extension 108 within a bushing 110. Then, the bushing 110 is connected to a switchgear, transformer, or other energy distribution component. Thus, the T-body 100 enables energy to be transferred from the cable 102 to an energy distribution system.
[0007] Separable insulated connectors, such as those shown in FIGS. 1 and 2 may need to be removed from the energy distribution system for a variety of reasons. One common reason is that the connectors sometimes fail, for example due to a power surge or a fault with the connection to the cable 102. Another reason is that the operators of the energy distribution system may want to change the type of switchgear or transformers to which the insulated connectors are connected, which could necessitate a change in the type of separable insulated connector required. Regardless of the reason for removing the separable insulated connectors, such removal and the subsequent replacement with another connector has traditionally been a difficult task.
[0008] One particular difficulty with removing a conventional separable insulated connector arises because the cable 102 cannot be readily disconnected from the compression connector 106. The compression connector 106 may be used only one time, because it is compressed around the cable 102. Thus, the cable 102 inserted into the connector must be cut at some point along a portion of the cable 102 that was not inserted into the connector before installing a replacement connector. Then, when installing the replacement connector, the cut cable 102 may be too short to reach the compression connector 106 in the replacement connector, which would connect to the switchgear, transformer, or other distribution component.
[0009] Conventionally, splices have been used to extend the length of a cut cable to connect the cable to the replacement separable insulated connector, thereby providing sufficient length for the separable insulated connector to maintain a connection with both the cable and the distribution component. However, using a splice for this purpose presents several difficulties. Splicing a cable first requires stripping the insulation on the end of the short cable and connecting it to a first end of a splice. Then, another section of similar cable, which will serve as the extension, must also be cut. Both ends of the extension cable must then be stripped, with one end being inserted into a second end of the splice, and the other end being inserted into the separable insulated connector. Thus, the task of splicing in an extension cable sufficient in length to reach the replacement connector requires three separate stripping and connection steps, each of which can be a labor intensive and error prone process.
[0010] An alternative method of connecting a cable that has been cut to a separable insulated connector is to use a separable insulated connector with a longer body. Such a connector may be designed to be sufficiently long to reach a cable that a conventional separable insulated connector could not, while still being able to connect to the distribution component. However, manufacturing separable insulated connectors with longer bodies (and varying lengths) requires investing in new molds that would be used to manufacture the connectors with such an increased length. The production, purchase, installation, and use of these molds would thus result in a significant cost.
[0011] Therefore, a need in the art exists for replacing a separable insulated connector in an electric power system that addresses the disadvantages found in the prior art. Specifically, a need in the art exists for connecting a replacement separable insulated connector to a cable with a short length without the labor intensive and error prone process of splicing an extension to the cable. A need in the art also exists for connecting a cable with a short length to a separable insulated connector that has a body of a standard length, so as not to require the costly investment of new molds and processes for manufacturing separable insulated connectors with longer bodies.
SUMMARY
[0012] The invention provides an efficient and cost effective method and device for replacing a separable insulated connector in an electric power system, and providing an electric connection between a cable and power distribution components. Specifically, the
invention provides an extender for a separable insulated connector for connecting a cable that has been cut, or otherwise has a length insufficient to connect to a conventional separable insulated connector, to a power distribution system. The invention accomplishes this task without requiring either an extension cable to be spliced to the shortened cable or a separable insulated connector with a longer body.
[0013] Molding an extender for a cable adapter for use with a T-body or elbow connector is an easier task than molding an extended T-body or elbow connector for several reasons. First, an extender may typically be smaller in size than T-body or elbow connector bodies, and such an extender may therefore be even smaller than an extended T-body or elbow connector body. If the body of the T-body or elbow connector were lengthened, a larger press and mold base would be required. Second, an extender may typically have approximately cylindrical dimensions, as opposed to the shells of T-body or elbow connectors, which typically include additional sides, curves, holes, and angles, further complicating the design of the press and mold needed. Thus, manufacturing an extender may avoid the excessive financial and time investment in manufacturing longer T-body or elbow connectors.
[0014] Thus, in one aspect, the invention provides an extender for a standard separable insulated connector, such as a T-body connector or an elbow connector with a size and shape associated with conventional T-body and elbow connectors. The extender can extend the effective length of the separable insulated connector, such that the extender can connect to a conventional cable adapter, which in turn connects to a shortened cable. The extender can include the same or similar interfaces for a cable adapter that a separable insulated connector has, and thus, a conventional cable adapter may be connected to the extender in the same manner in which conventional cable adapters can connect to conventional separable insulated connectors. The extender's length enables it to be connected to a conventional cable adapter, and then inserted into a standard sized T-body or elbow connector, which can then be connected to a switchgear, transformer, or other distribution component. Then, the shortened cable can be connected to the cable adapter. Alternatively, the shortened cable can be connected to the cable adapter before the separable insulated connector is connected to the distribution components.
[0015] The extender for the separable insulated connector may include a compression connector (or any other type of suitable conductive connector) for accepting the shortened cable that is inserted into the cable adapter, a conductive rod connected to the compression
connector for carrying electric power from the shortened cable to the T-body or elbow connector, and layers of semi-conductive material and insulating material. As used throughout this application, a "semi-conductive" material can refer to rubber or any other type of material that carries current, and thus can include conductive materials.
[0016] A shortened cable can be inserted into the cable adapter, which then can be connected to the extender. More particularly, the shortened cable can be inserted such that, once the cable adapter is inserted into the extender, the shortened cable is attached to the compression connector of the extender. Then, the extender, with the cable adapter and shortened cable connected therein, may be inserted into a conventional T-body or elbow connector, which can be connected to energy distribution systems or components thereof, such as switchgears and transformers.
[0017] Simply extending the length of a cable adapter, rather than providing a separate extender for the separable insulated connector, may not be sufficient to provide the necessary connection between the shortened cable and the T-body or elbow connector, because damage may result to an extended cable adapter if its components are not properly configured. The compression connector within cable adapters may be made of a conductive material. The compression connector should not touch any insulating material in the cable adapter because the insulating material could be damaged by the current passing through the compression connector. Air gaps between the compression connector and the insulating material could cause corona discharge if not shielded.
[0018] To avoid this problem, the compression connector of the extender may be bordered by a layer of semi-conductive material. This semi-conductive material can contact a semi-conductive insert or faraday cage disposed within the T-body or elbow connector. The purpose of a faraday cage is to shield all gaps of air within the mating components (such as the cable/cable adapter and the compression connector) of the separable insulated connector, as these air gaps can cause corona discharge within the connector. This discharge can occur if there is a voltage drop across the air gaps, and the discharge can corrode the rubber materials often used to make the separable insulated connector. The faraday cage ensures that the various mating components have the same electric potential, and thus prevents corona discharge within the mating components. The layer of semi-conductive material in the extender can act as a faraday cage if it contacts the semi-conductive insert of the separable insulated connector and becomes energized by the semi-conductive insert. The semi- conductive material need not touch the compression connector disposed within the extender.
For example, there may be gaps of air between the compression connector and semi- conductive material.
[0019] The compression connector of the extender may contact a conductive rod, or any other suitable conductive material, for carrying electric power from the shortened cable to the T-body or elbow connector when the extender is connected to cable adapter and inserted into the T-body or elbow connector. When the extender is so inserted, the conductive rod may contact a compression connector within the T-body or elbow connector. The compression connector within the T-body or elbow connector may then contact an output extension, for providing electric power to a switchgear, transformer, or other energy distribution component to which the T-body or elbow connector is connected. Alternatively, the T-body or elbow connector may not include a separate compression connector, in addition to the compression connector of the extender. In such an embodiment, the conductive rod may contact an output extension within the T-body or elbow connector directly.
[0020] These and other aspects, features, and embodiments of the invention will become apparent to a person of ordinary skill in the art upon consideration of the following detailed description of illustrated embodiments exemplifying the best mode for carrying out the invention as presently perceived.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a cross-sectional side view of a conventional T-body connector with a conventional cable adapter disposed therein.
[0022] Figure 2 is a cross-sectional side view of a conventional elbow connector with a conventional cable adapter disposed therein.
[0023] Figures 3 is a cross-sectional side view of a T-body connector with an extender connected to a cable adapter disposed therein, according to an exemplary embodiment.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0024] The following description of exemplary embodiments refers to the attached drawings, in which like numerals indicate like elements throughout the several figures.
[0025] Figure 3 is a cross-sectional side view of a T-body connector 300 with an extender 304 connected to a cable adapter 104 disposed therein, according to an exemplary embodiment. The cable adapter 104 disposed within the extender 304 can be similar or
identical to the cable adapters 104 used with conventional T-body connectors 100. Additionally, the T-body connector 300 includes many of the features and components associated with conventional T-body connectors 100. For example, the T-body connector 300 includes an upper bushing section 310. The upper bushing section 310 of the T-body connector 300 includes a first opening 312 and a second opening 314. In exemplary embodiments, the first opening 312 can be used to attach the T-body connector 300 to a switchgear, transformer, or other energy distribution component to which the T-body connector 300 may be connected. In an exemplary embodiment, as shown in Figure 3, a plug 316 or other similar bushing may be inserted into the first opening 312, and then the plug 316 may be inserted into an energy distribution component.
[0026] In various exemplary embodiments, the second opening 314 can be used as an access port to tighten a bolt that holds the plug 316 in the first opening 312 of the connector 300, to connect another device to the T-body connector 300, such as a device for measuring the electric flow through the T-body 300, or to connect the T-body 300 to another energy distribution component. Alternatively, the second opening 314 of the T-body 300 need not be connected to another device, and a protective cap may cover the second opening 314.
[0027] The T-body connector 300 also includes a shell 318 and a semi-conductive insert 320, both of which comprise a semi-conductive material. In exemplary embodiments, the shell 318 and the semi-conductive insert 320 can be made from a semi-conductive mixture of ethylene propylene dienemonomer (EPDM) rubber and carbon black.
[0028] In exemplary embodiments, as shown in Figure 3, the shell 318 of the T-body 300 may also include a ground wire tab 322 to which a wire 324 may be attached and grounded. The semi-conductive EPDM rubber in the shell 318 can provide ground shield continuity for the T-body 300, thereby providing deadfront safety for the shell 318. In other words, the grounded shell 318 of the T-body 300 allows for operators to touch the exterior of the T-body connector 300 safely.
[0029] Additionally, in exemplary embodiments, the T-body connector 300 may include a capacitive test point 326. The capacitive test point 326 may be molded on the shell 318 of the T-body 300. The capacitive test point 326 provides a location on which a fault indicating device, or other similar device, can be mounted to determine whether problems or irregularities exist with the electric power passing through the T-body connector 300. In an exemplary embodiment, a protective cap 327 may be placed on the capacitive test point 326 when it is not in use.
[0030] As shown in Figure 3, the T-body connector 300 also includes a layer of insulating material 328 between the shell 318 and the semi-conductive insert 320. In exemplary embodiments, the insulating material 328 also can include EPDM rubber. EPDM rubber serving as the insulating material 328 may not include carbon black or other conductive component, so that it may provide the necessary insulation and not conduct electricity.
[0031] The T-body connector 300 shown in Figure 3 further includes a compression connector 306 that is connected to an output extension 308. In exemplary embodiments, the compression connector 306 can be similar or identical to the compression connector 106 used in conventional T-body connectors 100 utilizing conventional cable adapters 104. In alternative exemplary embodiments, any other suitable conductive connector may be used in place of the compression connector 306. The compression connector 306 can be substantially disposed within an opening in the semi-conductive insert 320. The output extension 308 can be disposed within an upper bushing section 310 of the T-body connector 300. In exemplary embodiments, the compression connector 306 can include a protrusion 306a that extends from the semi-conductive insert 320 and contacts the output extension 308. In alternative exemplary embodiments, the output extension 308 can contact the compression connector 306 within the semi-conductive insert 320.
[0032] The output extension 308 can comprise any suitable conductive material. Upon installation of the T-body connector 300, the output extension 308 is in electric communication with - and can carry electric power to - any switchgear, transformer, or other energy distribution component to which the T-body connector 300 may be connected. As shown in Figure 3, in exemplary embodiments, the output extension 308 may contact a semi- conductive plug 316 or other bushing that has been inserted into the upper bushing section 310 of the T-body connector 300. The semi-conductive bushing or plug 316 then can be connected to the energy distribution component, thereby providing electric communication between the output extension 308 and the distribution component. In exemplary embodiments, as shown in Figure 3, the output extension 308 can comprise a threaded connection for connecting to the energy distribution components or the semi-conductive bushing or plug 316.
[0033] The upper end of the compression connector 306 contacts the output extension 308. In exemplary embodiments, the lower end of the compression connector 306 disposed within the semi-conductive insert 320 can contact a conductive rod 330 or other suitable
conductive material that carries electric power from an electric cable 302 connected to the cable adapter 104 and the extender 304. In an alternative embodiment, the conductive rod 330 can extend through the compression connector 306 and contact the output extension 308. In another alternative embodiment, the T-body connector 300 may not include an output extension 308, and instead, the conductive rod 330 can extend into the upper bushing section 310 of the T-body connector 300.
[0034] The semi-conductive insert 320 can provide a shield around the compression connector 306, thereby preventing electricity passing through the compression connector 306 from damaging the insulating material 328. As shown in Figure 3, the semi-conductive insert 320 may, but need not, contact the compression connector 306 directly, as indicated by the presence of gaps of air between the compression connector 306 and the semi-conductive insert 320. Rather, the semi-conductive insert 320 needs only to provide semi-conductive material that is disposed between the insulating material 328 and the compression connector 306, thereby functioning as a faraday cage.
[0035] As shown in Figure 3, the extender 304 can be inserted into the bottom end of the T-body connector 300. In exemplary embodiments, the extender 304 may include a conductive rod 330, such as a copper rod or any other suitable conductive rod or member, for carrying electricity from the shortened cable 302 to the T-body connector 300. In exemplary embodiments, the upper end of the rod 330 may contact the compression connector 306 disposed within the semi-conductive insert 320. In particular exemplary embodiments, the upper end of the rod 330 may comprise a terminal for contacting and connecting to the compression connector 306. As discussed previously, the compression connector 306 also contacts the output extension 308 of the T-body connector 300, thereby providing electric communication between the rod 330 and the output extension 308.
[0036] In alternative exemplary embodiments, the T-body connector 300 may not include a compression connector 306, or any other conductive connector, disposed within the shell 318. In such embodiments, a conductive rod 330 or other suitable conductive material that carries electric power from the shortened cable 302 may contact the output extension 308 directly. In exemplary embodiments, the rod 330 may comprise a terminal for contacting and connecting to the output extension 308 of the T-body connector 300.
[0037] The extender 304 shown in Figure 3 further includes a conductive cable connector, such as a compression connector 332. In exemplary embodiments, the shortened cable 302 is inserted into the compression connector 332, which holds the shortened cable
302 securely, in a manner similar to the compression connector 106 used in conventional T-body connectors 100, such as the one shown in Figure 1. In an exemplary embodiment, the extender 304 can include a channel 333 above the compression connector, through which the rod 330 can be inserted. Additionally, the extender 304 can include a support tube 335 within the channel 333, to help keep the channel 333 open and to help prevent it from collapsing.
[0038] The lower end of the rod 330 receives electricity from the compression connector 332, which receives electricity from the shortened cable 302. As shown in Figure 3, the rod 330 and shortened cable 302 can be inserted into opposite ends of the conductive compression connector 332, thereby providing an electric connection between the rod 330 and cable 302. In exemplary embodiments, the shortened cable 302 may be stripped of a protective and/or semi-conductive sheath 302b to expose a conductive portion 302a of the cable 302, and then the conductive portion 302a of the shortened cable 302 may be inserted into the cable adapter 104, such that a portion of the cable 302 extends through an opening at the top of the cable adapter 104. Then, the cable adapter 104 can be inserted into the extender 304, and the cable 302 can be inserted into — or otherwise connected to ~ the compression connector 332 of the extender 304.
[0039] In alternative embodiments, the conductive rod (such as the rod 330) disposed within the extender 304 may include the conductive cable connector (such as the compression connector 332). In such embodiments, the rod 330 disposed within the extender 304 may be configured such that a cable 302 may be inserted therein.
[0040] Additionally, as shown in Figure 3, the extender 304 can comprise two semi- conductive layers 334, 336, as well as an insulating layer 338. In exemplary embodiments, the extender 304 can comprise an inner semi-conductive layer 336, an insulating layer 338, and an outer semi-conductive layer 334. In exemplary embodiments, the semi-conductive layers 334, 336 can be made from a mixture comprising EPDM rubber and carbon black or other suitable conductive material. In alternative exemplary embodiments, various other suitable materials can be used for the semi-conductive layers 334, 336.
[0041] As shown in Figure 3, the inner semi-conductive layer 336 may surround or border the rod 330. Additionally, as with the semi-conductive insert 320 discussed previously and the compression connector 306 disposed therein, the inner semi-conductive layer 336 can provide a shield around the compression connector 332 and the rod 330, thereby preventing electricity passing through the compression connector 332 and the rod 330 from damaging the insulating material 338. The inner semi-conductive layer 336 may, but
need not, contact the compression connector 332 and the rod 330 directly, as long as it is disposed between the insulating material 338 and the compression connector 332 and the rod 330.
[0042] The inner semi-conductive layer 336 of the extender 304 is configured to contact the semi-conductive insert 320 of the T-body connector upon insertion of the extender 304 into the T-body connector 300. Electrical contact between the semi-conductive insert 320 and the inner semi-conductive layer 336 provides the necessary shield around the compression connector 332 the rod 330 and the compression connector 332. In alternative embodiments, the inner semi-conductive layer 336 can contact the conductive rod 330 and/or either of the compression connectors 306, 332, whether in addition to or instead of contacting the semi-conductive insert 320 to energize the inner semi-conductive layer 336 so that it can act as a faraday cage. If the inner semi-conductive layer 336 does not make electrical contact with the semi-conductive insert 320, conductive rod 330, or the compression connector 306, then there may be a significant voltage drop between the inner semi-conductive layer 336 and the compression connector 332 or the rod 330. Such a significant voltage drop could cause damage to the insulating layer 338 and could disturb the electricity flow from the shortened cable 302 through the T-body connector 300.
[0043] The insulating layer 338 of the extender 304 is disposed between the inner semi-conductive layer 336 and the outer semi-conductive layer 334. In exemplary embodiments, the insulating layer 338 can comprise the same material as the insulating material 328 used in the T-body connector 300. In particular exemplary embodiments, the insulating layer 338 can comprise EPDM rubber without carbon black or other conductive material mixed therein. In alternative exemplary embodiments, the insulating layer 338 may comprise various other suitable insulating materials known in the art.
[0044] The outer semi-conductive layer 334 of the extender 304 may border or surround the insulating layer 338. In exemplary embodiments, as shown in Figure 3, the outer semi-conductive layer 334 may extend further below the insulating layer 338 and the inner semi-conductive layer 336.
[0045] The outer semi-conductive layer 334 is configured to contact the shell 318 of the T-body connector 300 upon insertion of the extender 304 into the T-body connector 300. Electrical contact between the shell 318 and the outer semi-conductive layer 334 provides for the outer semi-conductive layer 334 to provide ground shield continuity for the exposed portion of the extender 304. If the outer semi-conductive layer 334 does not make electrical
contact with the shell 318, then it will not be connected to the ground wire 324 discussed previously.
[0046] Additionally, the outer semi-conductive layer 334 is configured to contact the semi-conductive material 104b of the cable adapter 104 upon insertion of the cable adapter 104 into the extender 304. Electrical contact between the shortened cable 302 and the semi- conductive material 104b of the cable adapter 104, which in turn is in electric contact with the outer semi-conductive layer 334, can provide ground shield continuity for the exposed portion of the extender 304, cable adapter 104, and the shortened cable 302. If the outer semi-conductive layer 334 does not make electrical contact with the shortened cable 302, then the shortened cable 302 may not be connected to the ground wire 324 discussed previously.
[0047] In an exemplary embodiment, as shown in Figure 3, the extender 304 can be of approximately cylindrical shape (though, as shown, the diameter of the cylindrical shape can increase and decrease through the body of the extender 304) and have an interface into which the cable adapter 104 can be inserted. Thus, such an extender 304 can have an inner diameter (measuring the width of the hole through which the cable adapter 104 is inserted) and an outer diameter (measuring the width of the extender 304). In a particular exemplary embodiment, the inner semi-conductive layer 336 can run along the inner diameter, and additionally extend to the outer diameter towards the top of the extender 304, as shown in Figure 3. This geometry and configuration can be helpful to ensure that the inner semi- conductive layer 336 contacts the semi-conductive insert 320 disposed within the shell 318.
[0048] One exemplary use of the T-body connector 300 with an extender 304 connected to a cable adapter 104 disposed therein will now be described with reference to Figures 1 and 3. As a person of ordinary skill in the art will recognize, variations of the exemplary steps described herein are possible.
[0049] After an operator of a power distribution system has made a decision to replace a conventional T-body connector 100 connected to a cable 102 via a cable adapter 104 on its lower end and a switchgear, transformer, or other energy distribution component on its upper end, the conventional T-body connector 100 must be removed. To do so, the source of power to the cable 102 may be turned off. Removal of the T-body connector 100 can begin with cutting a portion of the cable 102, thereby freeing the lower end of the conventional T-body 100. The upper end of the conventional T-body 100 can be unplugged or otherwise disconnected from the energy distribution component to which it was connected
either before or after cutting the cable 102. In an exemplary embodiment, the conventional T-body connector 100 and cable adapter 104 can be discarded at this point.
[0050] After the cable 102 has been cut, the shortened cable 302 may be too short to connect to a replacement conventional T-body connector 100 that will be connected to the energy distribution component. Instead, the shortened cable 302 can be inserted into a replacement cable adapter 104, which may have approximately the same size and dimensions as the discarded cable adapter 104. Then, the cable adapter 104 can be inserted into an extender 104. The extender 304 selected can have dimensions appropriate for accepting the cable adapter 104 with the shortened cable 302 disposed therein, and for being disposed and held securely within the T-body connector 300 upon insertion.
[0051 ] In exemplary embodiments, prior to being inserted into the replacement cable adapter 104, the shortened cable 302 can be stripped of a portion of insulating material commonly found on such cables 302, thereby exposing a portion of the conductive part of the cable 302. The exposed portion of the shortened cable 302 then can be inserted into the cable adapter 104 such that the cable 302 extends through an opening in the cable adapter 104 and then connects to the compression connector 332 disposed within the extender 304. The compression connector 332 can hold the cable 302 securely, and can comprise a conductive material so that it can receive electricity carried by the shortened cable 302.
[0052] The upper end of the compression connector 332 can contact a rod 330, such as a copper rod or any other suitable conductive rod 330 or structure. The compression connector 332 and rod 330 can be connected such that once power to the system is turned on and electricity flows through the cable 302, the electricity carried by the shortened cable 302 and received by the compression connector 332 can be conducted to the rod 330.
[0053] After the shortened cable 302 is inserted into the cable adapter 104 and the cable adapter 104 is inserted into the extender 304, the extender 304 is inserted into the T- body connector 300. In alternative exemplary embodiments, the extender 304 may be inserted into the T-body connector 300 before the shortened cable 302 is inserted into the cable adapter 104, and then the cable adapter 104 is inserted into the extender 304. Other variations in the order of these steps are possible, and will be known to one of ordinary skill in the art having the benefit of the present disclosure.
[0054] In exemplary embodiments, the extender 304 is inserted into the T-body connector 300 such that the rod 330 of the extender 304 contacts the compression connector 306 disposed within the semi-conductive insert 320 of the T-body connector 300. The
compression connector 306 is, in turn, in electrical contact with the output extension 308 of the T-body connector 300.
[0055] Furthermore, upon insertion of the extender 304 into the T-body connector 300, the inner semi-conductive layer 336 of the extender 304 contacts the semi-conductive insert 320 of the T-body connector 300, and the outer semi-conductive layer 334 of the extender 304 contacts the shell 318 of the T-body connector 300 and the semi- conductive material 104b of the cable adapter 104. These connections provide for a shield around the compression connectors 306, 332 disposed within the T-body connector 300 and extender 304, and allow for the exterior of the T-body connector 300, extender 304, and cable adapter 104 to be grounded upon proper connection of a ground wire 324 to the ground wire tab 322.
[0056] The T-body connector 300 is then connected to the switchgear, transformer, or other energy distribution component to which the conventional T-body connector 300 had been connected. In exemplary embodiments, one end of a semi-conductive plug 316 or other bushing may be inserted into an opening 312, 314 in the upper bushing section 310 of the T- body connector 300, and then the other end of the semi-conductive plug 316 may be inserted into the energy distribution component.
[0057] After the T-body connector 300 has been connected to the energy distribution component, whether directly or through a semi-conductive plug 316, the energy distribution component should be in electric communication with the T-body connector 300, the output extension 308 disposed therein, the compression connector 306 disposed within the semi- conductive insert 320, the rod 330, the compression connector 332 disposed within the extender 304, and the shortened cable 302. The source of power to the shortened cable 302 can be turned on, thereby providing electricity from the cable 302, through the cable adapter 104, extender 304 and T-body connector 300, and to the energy distribution component, or in the opposite direction.
[0058] A person of ordinary skill in the art, having the benefit of the present disclosure, will recognize that variations of the exemplary embodiments described herein are possible. For example, though the extender 304 described with respect Figure 3 is shown inserted into a T-body connector 300, extenders utilizing similar principles and technologies can be inserted into a variety of other separable insulated connectors. For example, as will be recognized by one of ordinary skill in the art having the benefit of the present disclosure, extenders can be used with elbow connectors, splices, or other separable insulated connectors. Such separable insulated connectors, similar to the T-body connector 300 of
Figure 3, can include a semi-conductive insert or faraday cage and a shell comprising semi- conductive material, insulating material between the semi-conductive insert and the shell, and a compression connector disposed within the semi-conductive insert.
[0059] Similarly, an extender can be configured to connect to the separable insulated connector according to the same or similar manner in which the extender 304 is connected to the T-body connector 300 described previously. Specifically, the extender can comprise an inner semi-conductive layer, an insulating layer, and an outer semi-conductive layer. Exemplary extenders can be configured such that when they are inserted into an elbow connector, splice, or other separable insulated connector, the inner semi-conductive layer can contact the semi-conductive insert, and the outer semi-conductive layer can contact the shell of the separable insulated connector.
[0060] Such exemplary extenders also can include a conductive rod. In alternative embodiments, extenders that can be used with a variety of separable insulated connectors may include any other suitable conductive structure for carrying electricity from a cable to the connector. One end of the conductive rod can receive electricity from the cable. Such extenders may further include a variety of conductive connectors, such as a compression connector, which can contact the conductive rod and the cable, thereby providing a connection between them.
[0061] Additionally, although the foregoing description describes an extender 304 that connects to a separable insulated connector on its top side and to a cable adapter 104 on its bottom side, other configurations are possible. For example, in view of these interfaces, a first extender can be inserted into a separable insulated connector, and then instead of a cable adapter being inserted into the first extender, a second extender can be inserted therein. Then, a cable adapter can be inserted into the second extender. Alternatively, any number of extenders may be connected to each other, thereby further increasing the ability of the extender to provide a connection between a separable insulated connector and a shortened cable. Such an arrangement can be possible because, as the foregoing description and the Figures indicate, the top side of an extender 304 can have interfaces identical or similar to the top side of a cable adapter 104, and the bottom side of an extender 304 can have interfaces identical or similar to the bottom side of a separable insulated connector such as a T-body connector 300.
[0062] In conclusion, the foregoing exemplary embodiments enable an extender 304 for a separable insulated connector - such as a T-body connector 300, elbow connector,
splice, or any other suitable connector - that can be used with a cable adapter 104 (or other extender 304) disposed therein. Many other modifications, features, and embodiments will become evident to a person of ordinary skill in the art having the benefit of the present disclosure. It should be appreciated, therefore, that many aspects of the invention were described above by way of example only and are not intended as required or essential elements of the invention unless explicitly stated otherwise. It should also be understood that the invention is not restricted to the illustrated embodiments and that various modifications can be made within the spirit and scope of the following claims.
Claims
1. An extender for a separable insulated connector, comprising: a conductive cable connector; a conductor in electric communication with said conductive cable connector; an inner layer comprising a semi-conductive material and disposed around said conductive cable connector and said conductor; an outer layer comprising a semi-conductive material and disposed around said inner layer; and an insulating layer disposed between said inner layer and said outer layer, wherein said extender is configured for insertion into a separable insulated connector comprising a semi-conductive insert such that, upon insertion of said extender into said separable insulated connector, said inner layer contacts said semi-conductive insert.
2. The extender of claim 1, wherein said separable insulated connector further comprises a shell, and wherein upon insertion of said extender into said separable insulated connector, said outer layer contacts said shell.
3. The extender of claim 2, wherein said separable insulated connector comprises an output extension disposed within said shell, and wherein said conductor is configured such that, upon insertion of said extender into said separable insulated connector, said conductor is in electric communication with said output extension.
4. The extender of claim 3, wherein said separable insulated connector further comprises a conductive connector substantially disposed within said semi-conductive insert and in electric communication with said output extension, and wherein said conductor is configured such that, upon insertion of said extender into said separable insulated connector, said conductor is in electric communication with said conductive connector, thereby providing said electric communication between said conductor and said output extension.
5. The extender of claim 1, wherein said inner layer, said outer layer, and said semi-conductive insert comprise a mixture comprising ethylene propylene dienemonomer rubber and carbon black, and said insulating layer comprises ethylene propylene dienemonomer rubber.
6. The extender of claim 1 , further comprising an interface configured to accept a cable adapter disposed therein.
7. The extender of claim 1, further comprising an interface configured to accept a second extender disposed therein.
8. An extender for a separable insulated connector, comprising: a conductive cable connector; a conductor in electric communication with said conductive cable connector; an inner layer comprising a semi-conductive material and disposed around said conductive cable connector and said conductor; an outer layer comprising a semi-conductive material and disposed around said inner layer; and an insulating layer disposed between said inner layer and said outer layer, wherein said extender has an inner diameter and an outer diameter, and wherein at least a portion of said inner layer extends from said inner diameter to said outer diameter.
9. The extender of claim 8, wherein said extender is configured for insertion into a separable insulated connector.
10. The extender of claim 9, wherein said separable insulated connector comprises one of a T-body connector, an elbow connector, and a splice.
11. The extender of claim 9, wherein said separable insulated connector comprises: a shell having a bottom opening; a semi-conductive insert disposed within said shell; and an output extension disposed within said shell, and wherein said extender is configured to be inserted into said bottom opening of said shell such that said conductor is in electric communication with said output extension.
12. The extender of claim 11, wherein said separable insulated connector further comprises a conductive connector substantially disposed within said semi-conductive insert, and wherein said conductor is in electric communication with said conductive connector and said conductive connector is in electric communication with said output extension, thereby providing said electric communication between said conductor and said output extension.
13. The extender of claim 12, wherein at least one of said conductive connector and said conductive cable connector comprises a compression connector.
14. The extender of claim 11, wherein said inner layer and said outer layer are configured such that upon insertion of said extender into said bottom opening, said inner layer contacts said semi-conductive insert and said outer layer contacts said shell.
15. An extender for a separable insulated connector, comprising: a conductive cable connector; a conductor in electric communication with said conductive cable connector; an inner layer comprising a semi-conductive material and disposed around said conductive cable connector and said conductor; an outer layer comprising a semi-conductive material and disposed around said inner layer; an insulating layer disposed between said inner layer and said outer layer; and an interface configured to accept a first additional extender disposed therein, wherein said extender is configured for insertion into a separable insulated connector.
16. The extender of claim 15, wherein said separable insulated connector comprises a shell and a semi-conductive insert, and wherein upon insertion of said extender into said separable insulated connector, said inner layer contacts said semi-conductive insert.
17. The extender of claim 15, wherein said separable insulated connector comprises: a shell having a bottom opening; a semi-conductive insert disposed within said shell; and an output extension disposed within said shell, and wherein said extender is configured to be inserted into said bottom opening of said shell such that said conductor is in electric communication with said output extension.
18. The extender of claim 17, wherein said separable insulated connector further comprises a conductive connector substantially disposed within said semi-conductive insert, and wherein said conductor is in electric communication with said conductive connector and said conductive connector is in electric communication with said output extension, thereby providing said electric communication between said conductor and said output extension.
19. The extender of claim 15, wherein said extender has an inner diameter and an outer diameter, and wherein at least a portion of said inner layer extends from said inner diameter to said outer diameter.
20. The extender of claim 15, wherein said first additional extender comprises: a first additional conductive cable connector; and a first additional conductor in electric communication with said first additional conductive cable connector, wherein upon insertion of said first additional extender into said extender, said first additional conductor contacts said conductive cable connector.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US12/082,717 | 2008-04-11 | ||
US12/082,717 US7878849B2 (en) | 2008-04-11 | 2008-04-11 | Extender for a separable insulated connector |
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WO2009126574A2 true WO2009126574A2 (en) | 2009-10-15 |
WO2009126574A3 WO2009126574A3 (en) | 2009-12-30 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102820565A (en) * | 2011-12-31 | 2012-12-12 | 中航光电科技股份有限公司 | Mixed-loading connector |
EP2819250A1 (en) * | 2013-06-26 | 2014-12-31 | 3M Innovative Properties Company | Cable connection device |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7854620B2 (en) | 2007-02-20 | 2010-12-21 | Cooper Technologies Company | Shield housing for a separable connector |
US7666012B2 (en) | 2007-03-20 | 2010-02-23 | Cooper Technologies Company | Separable loadbreak connector for making or breaking an energized connection in a power distribution network |
US7661979B2 (en) | 2007-06-01 | 2010-02-16 | Cooper Technologies Company | Jacket sleeve with grippable tabs for a cable connector |
US7905735B2 (en) | 2008-02-25 | 2011-03-15 | Cooper Technologies Company | Push-then-pull operation of a separable connector system |
US7950940B2 (en) | 2008-02-25 | 2011-05-31 | Cooper Technologies Company | Separable connector with reduced surface contact |
MX2012010494A (en) * | 2010-03-11 | 2013-03-18 | Preformed Line Products Co | Improvements in electrical connectors and methods therefor. |
CN102386501B (en) * | 2010-09-04 | 2014-05-07 | 王日新 | Shielding type T-shaped capacitance type insulation bus joint |
JP5885387B2 (en) * | 2011-01-14 | 2016-03-15 | 川崎重工業株式会社 | Railway vehicle high-voltage equipment system and railway vehicle |
US8454376B1 (en) | 2011-11-10 | 2013-06-04 | Thomas & Betts International, Inc. | Electrical connector with sacrificial component |
CN105340145B (en) | 2013-06-26 | 2019-06-18 | 3M创新有限公司 | Power cable terminal-connecting means |
US9444176B2 (en) * | 2013-06-28 | 2016-09-13 | Thomas & Betts International, Llc | Electrical connector having cold shrink component |
FR3010248B1 (en) * | 2013-09-05 | 2017-03-31 | Nexans | DEVICE FOR JUNCTION OF HYBRID ELECTRIC TRANSPORT CABLES |
US9385493B2 (en) * | 2014-04-10 | 2016-07-05 | S&C Electric Company | Adjustable bus bar for power distribution equipment |
US9941616B2 (en) * | 2015-02-24 | 2018-04-10 | Thomas & Betts International Llc | Multi-piece jacket for separable connectors |
US10522983B2 (en) * | 2016-04-28 | 2019-12-31 | Novinium, Inc. | Injection electrical connector |
CN107706877A (en) * | 2016-08-08 | 2018-02-16 | 安徽伊法拉电气有限公司 | A kind of shield type separable cable terminal |
EP3541730B1 (en) | 2016-11-21 | 2023-09-06 | Ecolab USA Inc. | Material supply system with valve assembly with improved sealing capabilities |
US10562062B2 (en) | 2016-11-21 | 2020-02-18 | Ecolab Usa Inc. | Material supply system with valve assembly |
MX2020005768A (en) | 2017-12-04 | 2020-08-20 | Ecolab Usa Inc | Powder material hopper system with offset loading. |
AU2018378207B2 (en) | 2017-12-04 | 2024-02-08 | Ecolab Usa Inc. | Material wetting system with shroud assembly |
EP3499246B1 (en) * | 2017-12-18 | 2024-04-17 | 3M Innovative Properties Company | Voltage divider assembly |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4377547A (en) * | 1982-01-18 | 1983-03-22 | Minnesota Mining And Manufacturing Company | Molded high voltage splice body |
US5114357A (en) * | 1991-04-29 | 1992-05-19 | Amerace Corporation | High voltage elbow |
US5788535A (en) * | 1996-09-11 | 1998-08-04 | Augat/Lrc Electronics, Inc. | Adaptor assembly |
US6042407A (en) * | 1998-04-23 | 2000-03-28 | Hubbell Incorporated | Safe-operating load reducing tap plug and method using the same |
Family Cites Families (207)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR481359A (en) | 1916-03-31 | 1916-11-28 | Henri De La Valette | Assembly device for electrical connections |
US1903956A (en) * | 1931-04-17 | 1933-04-18 | Reyrolle A & Co Ltd | High voltage electric switch gear |
US2953724A (en) | 1954-05-11 | 1960-09-20 | Hilfiker Hans | Electrical distribution boards |
US3474386A (en) | 1964-02-10 | 1969-10-21 | Edwin A Link | Electrical connector |
US3392363A (en) | 1965-06-10 | 1968-07-09 | Amp Inc | Housing member for electrical connector members |
US3949343A (en) * | 1967-08-15 | 1976-04-06 | Joslyn Mfg. And Supply Co. | Grounded surface distribution apparatus |
US4029380A (en) * | 1967-08-15 | 1977-06-14 | Joslyn Mfg. And Supply Co. | Grounded surface distribution apparatus |
US3915534A (en) | 1967-08-15 | 1975-10-28 | Joslyn Mfg & Supply Co | Grounded surface distribution apparatus |
NL147874B (en) | 1967-10-10 | 1975-11-17 | Smit Nijmegen Electrotec | TRANSFORMER WITH A CONTROL SWITCH. |
US3471669A (en) | 1968-01-16 | 1969-10-07 | Chance Co Ab | Encapsulated switch assembly for underground electric distribution service |
US3509516A (en) * | 1968-02-01 | 1970-04-28 | Mc Graw Edison Co | High voltage connector and entrance bushing assembly |
US3509518A (en) * | 1968-03-11 | 1970-04-28 | Mc Graw Edison Co | High voltage cable connectors |
US3539972A (en) | 1968-05-21 | 1970-11-10 | Amerace Esna Corp | Electrical connector for high voltage electrical systems |
US3513425A (en) * | 1969-05-21 | 1970-05-19 | Gen Electric | Modular electrical conductor termination system |
US3594685A (en) | 1969-07-14 | 1971-07-20 | Joslyn Mfg & Supply Co | Electrical coupler |
US3576493A (en) * | 1969-09-25 | 1971-04-27 | Gen Electric | Molded conductor housing with a molded capacitance tap and method of making same |
US3654590A (en) * | 1969-12-30 | 1972-04-04 | Ameraca Esna Corp | Electrical contact devices for high voltage electrical systems |
US3663928A (en) * | 1970-01-09 | 1972-05-16 | Westinghouse Electric Corp | Electrical bushing assembly |
US3652975A (en) * | 1970-01-09 | 1972-03-28 | Westinghouse Electric Corp | Electrical connector assembly |
US3626354A (en) | 1970-03-04 | 1971-12-07 | Philip M Banner | Polarity-reversing adapter means |
US3670287A (en) * | 1970-08-17 | 1972-06-13 | Westinghouse Electric Corp | Electrical connector assembly |
US3725846A (en) * | 1970-10-30 | 1973-04-03 | Itt | Waterproof high voltage connection apparatus |
US3720904A (en) * | 1971-02-04 | 1973-03-13 | Amp Inc | Self-actuating loadbreak connector |
US3678432A (en) | 1971-04-26 | 1972-07-18 | Gen Electric | Vented fuse module for underground power cable system |
US3740511A (en) * | 1971-05-06 | 1973-06-19 | J Westmoreland | Vacuum switch |
US3860322A (en) * | 1972-01-03 | 1975-01-14 | Rte Corp | Sealed electrical connector |
DE2221395C3 (en) * | 1972-05-02 | 1974-09-19 | Omron Tateisi Electronics Co., Kyoto (Japan) | Shock sensitive electrical switch |
US3798586A (en) * | 1972-05-22 | 1974-03-19 | P Huska | Union for connecting electrical conductors |
US4343356A (en) | 1972-10-06 | 1982-08-10 | Sonics International, Inc. | Method and apparatus for treating subsurface boreholes |
US3845233A (en) | 1973-02-12 | 1974-10-29 | Dielectrics Int Ltd | Pressurized insulant of solid and fluid for a conductor |
US3826860A (en) | 1973-03-08 | 1974-07-30 | Amp Inc | High voltage electrical connector |
US3953099A (en) * | 1973-12-10 | 1976-04-27 | Bunker Ramo Corporation | One-piece environmental removable contact connector |
US3945699A (en) * | 1974-09-27 | 1976-03-23 | Kearney-National Inc. | Electric connector apparatus and method |
US3955874A (en) * | 1974-10-29 | 1976-05-11 | General Electric Company | Shielded power cable separable connector module having a conductively coated insulating rod follower |
JPS5851393B2 (en) | 1975-04-30 | 1983-11-16 | 松下電工株式会社 | rotating connector |
US3957332A (en) * | 1975-05-02 | 1976-05-18 | Kearney-National, Inc. | Electric connector apparatus and method |
US3960433A (en) * | 1975-09-05 | 1976-06-01 | General Electric Company | Shielded power cable separable connector module having conducting contact rod with a beveled shoulder overlapped by insulating follower material |
US4107486A (en) | 1976-06-30 | 1978-08-15 | S & C Electric Company | Switch operating mechanisms for high voltage switches |
US4088383A (en) * | 1976-08-16 | 1978-05-09 | International Telephone And Telegraph Corporation | Fault-closable electrical connector |
US4067636A (en) * | 1976-08-20 | 1978-01-10 | General Electric Company | Electrical separable connector with stress-graded interface |
US4161012A (en) | 1977-03-02 | 1979-07-10 | Joslyn Mfg. And Supply Co. | High voltage protection apparatus |
NL168662C (en) | 1977-04-19 | 1982-04-16 | Coq Bv | RAIL SYSTEM FOR ELECTRICAL SWITCHING DEVICE FOR HIGH VOLTAGES. |
US4103123A (en) | 1977-06-27 | 1978-07-25 | Northwestern Public Service Company | Grounding device |
US4123131A (en) | 1977-08-05 | 1978-10-31 | General Motors Corporation | Vented electrical connector |
US4113339A (en) | 1977-08-29 | 1978-09-12 | Westinghouse Electric Corp. | Load break bushing |
US4154993A (en) * | 1977-09-26 | 1979-05-15 | Mcgraw-Edison Company | Cable connected drawout switchgear |
US4223179A (en) | 1978-01-05 | 1980-09-16 | Joslyn Mfg. And Supply Co. | Cable termination connector assembly |
US4152643A (en) * | 1978-04-10 | 1979-05-01 | E. O. Schweitzer Manufacturing Co., Inc. | Voltage indicating test point cap |
US4203017A (en) * | 1978-07-24 | 1980-05-13 | Integrated Electronics Corporation | Electric switch |
US4186985A (en) * | 1978-08-29 | 1980-02-05 | Amerace Corporation | Electrical connector |
US4210381A (en) | 1978-08-30 | 1980-07-01 | Amerace Corporation | Electrical connector contacts |
US4260214A (en) * | 1979-07-23 | 1981-04-07 | International Telephone And Telegraph Corporation | Fault-closable electrical connector |
US4353611A (en) | 1980-03-06 | 1982-10-12 | Amerace Corporation | Bushing well stud construction |
US4360967A (en) | 1980-12-31 | 1982-11-30 | Amerace Corporation | Assembly tool for electrical connectors |
US4354721A (en) | 1980-12-31 | 1982-10-19 | Amerace Corporation | Attachment arrangement for high voltage electrical connector |
DE3110609A1 (en) | 1981-03-18 | 1982-10-07 | Siemens Ag | Mechanical-electrical plug connection |
JPS628125Y2 (en) * | 1981-06-01 | 1987-02-25 | ||
FR2508729A1 (en) | 1981-06-24 | 1982-12-31 | Lb Air | Enclosed cylindrical electrical connector for single bare-ended wires - has mating tubular sections with device for releasing radial holding force during disconnection |
JPS5837708U (en) * | 1981-09-02 | 1983-03-11 | 三菱電機株式会社 | package substation |
US4484169A (en) | 1981-11-05 | 1984-11-20 | Mitsubishi Denki Kabushiki Kaisha | Transformer apparatus with -superimposed insulated switch and transformer units |
US4600260A (en) | 1981-12-28 | 1986-07-15 | Amerace Corporation | Electrical connector |
US4508413A (en) * | 1982-04-12 | 1985-04-02 | Allied Corporation | Connector |
JPS602005A (en) * | 1983-06-15 | 1985-01-08 | 株式会社日立製作所 | Gas insulated switching device |
US4568804A (en) * | 1983-09-06 | 1986-02-04 | Joslyn Mfg. And Supply Co. | High voltage vacuum type circuit interrupter |
US4626755A (en) | 1984-12-14 | 1986-12-02 | General Electric Company | Sump pump motor switch circuit |
GB8432608D0 (en) | 1984-12-22 | 1985-02-06 | Bp Chem Int Ltd | Strippable laminate |
CN86100367B (en) | 1985-05-09 | 1988-10-05 | 三菱电机株式会社 | Break switch |
DE3521365C1 (en) | 1985-06-14 | 1987-02-19 | Stocko Metallwarenfab Henkels | Electrical plug connection |
CH671118A5 (en) | 1985-11-14 | 1989-07-31 | Bbc Brown Boveri & Cie | |
JPS62198677A (en) | 1986-02-26 | 1987-09-02 | Nissan Chem Ind Ltd | Tetraol derivative |
US4822291A (en) * | 1986-03-20 | 1989-04-18 | Joslyn Corporation | Gas operated electrical connector |
US4700258A (en) | 1986-07-21 | 1987-10-13 | Colt Industries Inc. | Lightning arrester system for underground loop distribution circuit |
US4820183A (en) * | 1986-09-12 | 1989-04-11 | Cooper Industries | Connection mechanism for connecting a cable connector to a bushing |
US4715104A (en) | 1986-09-18 | 1987-12-29 | Rte Corporation | Installation tool |
US4722694A (en) * | 1986-12-01 | 1988-02-02 | Rte Corporation | High voltage cable connector |
JPS6393081U (en) | 1986-12-05 | 1988-06-16 | ||
FR2613879B1 (en) * | 1987-04-10 | 1993-07-16 | Baxter Travenol Lab | MALE AND / OR FEMALE ELECTRICAL CONNECTOR AND MALE PLUG FOR CONNECTOR |
US4799895A (en) * | 1987-06-22 | 1989-01-24 | Amerace Corporation | 600-Amp hot stick operable screw-assembled connector system |
US4793637A (en) | 1987-09-14 | 1988-12-27 | Aeroquip Corporation | Tube connector with indicator and release |
US4779341A (en) | 1987-10-13 | 1988-10-25 | Rte Corporation | Method of using a tap plug installation tool |
US4972049A (en) | 1987-12-11 | 1990-11-20 | Cooper Power Systems, Inc. | Bushing and gasket assembly |
US4871888A (en) | 1988-02-16 | 1989-10-03 | Bestel Ernest F | Tubular supported axial magnetic field interrupter |
JPH0828925B2 (en) | 1988-03-11 | 1996-03-21 | 株式会社日立製作所 | Gas insulated switchgear |
US4867687A (en) | 1988-06-29 | 1989-09-19 | Houston Industries Incorporated | Electrical elbow connection |
US4971573A (en) * | 1988-09-19 | 1990-11-20 | Raychem Corporation | Electrical connection device providing integral strain relief |
US4863392A (en) | 1988-10-07 | 1989-09-05 | Amerace Corporation | High-voltage loadbreak bushing insert connector |
US4857021A (en) | 1988-10-17 | 1989-08-15 | Cooper Power Systems, Inc. | Electrical connector assembly and method for connecting the same |
US5025121A (en) * | 1988-12-19 | 1991-06-18 | Siemens Energy & Automation, Inc. | Circuit breaker contact assembly |
US4891016A (en) * | 1989-03-29 | 1990-01-02 | Amerace Corporation | 600-Amp hot stick-operable pin-and-socket assembled connector system |
EP0406496B1 (en) | 1989-07-05 | 1997-03-19 | Idec Izumi Corporation | Switch provided with indicator |
US4946393A (en) | 1989-08-04 | 1990-08-07 | Amerace Corporation | Separable connector access port and fittings |
US4955823A (en) | 1989-10-10 | 1990-09-11 | Amerace Corporation | 600-Amp hot stick-operable screw and pin-and-socket assembled connector system |
US4982059A (en) * | 1990-01-02 | 1991-01-01 | Cooper Industries, Inc. | Axial magnetic field interrupter |
JPH0754933Y2 (en) | 1990-11-22 | 1995-12-18 | 矢崎総業株式会社 | Waterproof electrical connector |
GB2254493A (en) | 1990-12-27 | 1992-10-07 | Rover Group | A connector for a high tension lead. |
US5130495A (en) | 1991-01-24 | 1992-07-14 | G & W Electric Company | Cable terminator |
US5128824A (en) | 1991-02-20 | 1992-07-07 | Amerace Corporation | Directionally vented underground distribution surge arrester |
GB9103902D0 (en) | 1991-02-25 | 1991-04-10 | Raychem Sa Nv | Electrically-protected connector |
FR2674073B1 (en) * | 1991-03-12 | 1996-05-10 | Pirelli Cables | CONNECTION DEVICE FOR ONE OR TWO ELECTRIC CABLES, AND PROCEDURE FOR MOUNTING THIS DEVICE AT THE END OF THE CABLE (S) |
US5175403A (en) | 1991-08-22 | 1992-12-29 | Cooper Power Systems, Inc. | Recloser means for reclosing interrupted high voltage electric circuit means |
US5266041A (en) | 1992-01-24 | 1993-11-30 | Luca Carlo B De | Loadswitching bushing connector for high power electrical systems |
US5213517A (en) * | 1992-02-10 | 1993-05-25 | G & H Technology, Inc. | Separable electrodes with electric arc quenching means |
US5230142A (en) | 1992-03-20 | 1993-07-27 | Cooper Power Systems, Inc. | Operating and torque tool |
US5221220A (en) * | 1992-04-09 | 1993-06-22 | Cooper Power Systems, Inc. | Standoff bushing assembly |
JP2871332B2 (en) | 1992-09-03 | 1999-03-17 | 住友電装株式会社 | Connector inspection device |
US5277605A (en) * | 1992-09-10 | 1994-01-11 | Cooper Power Systems, Inc. | Electrical connector |
US5747766A (en) * | 1993-03-16 | 1998-05-05 | Cooper Industries, Inc. | Operating mechanism usable with a vacuum interrupter |
US6984791B1 (en) * | 1993-03-19 | 2006-01-10 | Cooper Technologies Company | Visual latching indicator arrangement for an electrical bushing and terminator |
US6504103B1 (en) * | 1993-03-19 | 2003-01-07 | Cooper Industries, Inc. | Visual latching indicator arrangement for an electrical bushing and terminator |
US5359163A (en) | 1993-04-28 | 1994-10-25 | Eaton Corporation | Pushbutton switch with adjustable pretravel |
FR2705505B1 (en) | 1993-05-14 | 1995-08-11 | Legrand Sa | Cover joint trough fitted with a lock, in particular for electrical equipment. |
US5393240A (en) * | 1993-05-28 | 1995-02-28 | Cooper Industries, Inc. | Separable loadbreak connector |
US5492487A (en) * | 1993-06-07 | 1996-02-20 | Ford Motor Company | Seal retention for an electrical connector assembly |
US5358420A (en) | 1993-06-07 | 1994-10-25 | Ford Motor Company | Pressure relief for an electrical connector |
FR2709204B1 (en) | 1993-08-20 | 1995-09-22 | Gec Alsthom Engergie Inc | Female contact, especially for high voltage disconnector. |
US5427538A (en) | 1993-09-22 | 1995-06-27 | Cooper Industries, Inc. | Electrical connecting system |
US5356304A (en) | 1993-09-27 | 1994-10-18 | Molex Incorporated | Sealed connector |
US5619021A (en) * | 1993-11-19 | 1997-04-08 | Sumitomo Wiring Systems, Ltd. | Lever switch device, method for activating switches in a lever switch device, and method for outputting data signals |
US5433622A (en) | 1994-07-07 | 1995-07-18 | Galambos; Louis G. | High voltage connector |
US5641310A (en) | 1994-12-08 | 1997-06-24 | Hubbell Incorporated | Locking type electrical connector with retention feature |
US5737874A (en) * | 1994-12-15 | 1998-04-14 | Simon Roofing And Sheet Metal Corp. | Shutter construction and method of assembly |
US5573410A (en) * | 1995-03-02 | 1996-11-12 | Amerace Corporation | Variable size entry insert for cable accessories and method |
US5655921A (en) | 1995-06-07 | 1997-08-12 | Cooper Industries, Inc. | Loadbreak separable connector |
US5661280A (en) | 1995-08-02 | 1997-08-26 | Abb Power T&D Company Inc. | Combination of a gas-filled interrupter and oil-filled transformer |
US5589671A (en) | 1995-08-22 | 1996-12-31 | Us Controls Corp. | Rotary switch with spring stabilized contact control rotor |
US5766517A (en) | 1995-12-21 | 1998-06-16 | Cooper Industries, Inc. | Dielectric fluid for use in power distribution equipment |
JPH09180775A (en) | 1995-12-25 | 1997-07-11 | Yazaki Corp | Cap mounting structure for high tension cable |
US5667060A (en) | 1995-12-26 | 1997-09-16 | Amerace Corporation | Diaphragm seal for a high voltage switch environment |
US5717185A (en) * | 1995-12-26 | 1998-02-10 | Amerace Corporation | Operating mechanism for high voltage switch |
US5808258A (en) | 1995-12-26 | 1998-09-15 | Amerace Corporation | Encapsulated high voltage vacuum switches |
US6280659B1 (en) | 1996-03-01 | 2001-08-28 | David W. Sundin | Vegetable seed oil insulating fluid |
US5864107A (en) * | 1996-05-24 | 1999-01-26 | S&C Electric Company | Switchgear assembly |
SE9602079D0 (en) | 1996-05-29 | 1996-05-29 | Asea Brown Boveri | Rotating electric machines with magnetic circuit for high voltage and a method for manufacturing the same |
GB9615747D0 (en) * | 1996-07-26 | 1996-09-04 | Raychem Gmbh | Electric connection |
US6130394A (en) | 1996-08-26 | 2000-10-10 | Elektrotechnische Weke Fritz Driescher & Sohne GmbH | Hermetically sealed vacuum load interrupter switch with flashover features |
MY119298A (en) | 1996-09-13 | 2005-04-30 | Cooper Ind Inc | Encapsulated vacuum interrupter and method of making same |
US5747765A (en) * | 1996-09-13 | 1998-05-05 | Cooper Industries, Inc. | Vertical antitracking skirts |
US5736705A (en) * | 1996-09-13 | 1998-04-07 | Cooper Industries, Inc. | Grading ring insert assembly |
US5816835A (en) | 1996-10-21 | 1998-10-06 | Alden Products Company | Multi-sleeve high-voltage cable plug with vented seal |
US5795180A (en) | 1996-12-04 | 1998-08-18 | Amerace Corporation | Elbow seating indicator |
US6022247A (en) * | 1996-12-10 | 2000-02-08 | Yazaki Corporation | Electric wiring block |
US5912604A (en) | 1997-02-04 | 1999-06-15 | Abb Power T&D Company, Inc. | Molded pole automatic circuit recloser with bistable electromagnetic actuator |
US5857862A (en) * | 1997-03-04 | 1999-01-12 | Cooper Industries, Inc. | Loadbreak separable connector |
US5846093A (en) | 1997-05-21 | 1998-12-08 | Cooper Industries, Inc. | Separable connector with a reinforcing member |
US6332785B1 (en) | 1997-06-30 | 2001-12-25 | Cooper Industries, Inc. | High voltage electrical connector with access cavity and inserts for use therewith |
US6168447B1 (en) | 1997-07-30 | 2001-01-02 | Thomas & Betts International, Inc. | Loadbreak connector assembly which prevents switching flashover |
US6939151B2 (en) | 1997-07-30 | 2005-09-06 | Thomas & Betts International, Inc. | Loadbreak connector assembly which prevents switching flashover |
US5957712A (en) | 1997-07-30 | 1999-09-28 | Thomas & Betts International, Inc. | Loadbreak connector assembly which prevents switching flashover |
US7044760B2 (en) * | 1997-07-30 | 2006-05-16 | Thomas & Betts International, Inc. | Separable electrical connector assembly |
US6153830A (en) * | 1997-08-02 | 2000-11-28 | John Mezzalingua Associates, Inc. | Connector and method of operation |
US5936825A (en) | 1998-03-18 | 1999-08-10 | Copper Industries, Inc. | Rise pole termination/arrestor combination |
IT1299218B1 (en) | 1998-05-11 | 2000-02-29 | Abb Trasformatori S P A | POWER AND / OR DISTRIBUTION TRANSFORMER EQUIPPED WITH SWITCH UNDER LOAD |
US6689947B2 (en) * | 1998-05-15 | 2004-02-10 | Lester Frank Ludwig | Real-time floor controller for control of music, signal processing, mixing, video, lighting, and other systems |
US6213799B1 (en) * | 1998-05-27 | 2001-04-10 | Hubbell Incorporated | Anti-flashover ring for a bushing insert |
JPH1175181A (en) | 1998-07-07 | 1999-03-16 | Sony Corp | Converter and conversion method for digital image signal |
US6146187A (en) | 1998-11-25 | 2000-11-14 | Supplie & Co. Import/Export, Inc. | Screwless terminal block |
DE19906972B4 (en) | 1999-02-19 | 2008-04-30 | Abb Ag | Switch pole with vacuum switching chamber |
GB2350487B (en) | 1999-05-25 | 2002-12-24 | Transense Technologies Plc | Electrical signal coupling device |
US6220888B1 (en) * | 1999-06-25 | 2001-04-24 | Hubbell Incorporated | Quick disconnect cable connector device with integral body and strain relief structure |
US6566996B1 (en) * | 1999-09-24 | 2003-05-20 | Cooper Technologies | Fuse state indicator |
US7079367B1 (en) | 1999-11-04 | 2006-07-18 | Abb Technology Ag | Electric plant and method and use in connection with such plant |
US6362445B1 (en) * | 2000-01-03 | 2002-03-26 | Eaton Corporation | Modular, miniaturized switchgear |
US6809413B1 (en) | 2000-05-16 | 2004-10-26 | Sandia Corporation | Microelectronic device package with an integral window mounted in a recessed lip |
US6384473B1 (en) * | 2000-05-16 | 2002-05-07 | Sandia Corporation | Microelectronic device package with an integral window |
US6733322B2 (en) * | 2000-09-01 | 2004-05-11 | Tyco Electronics Amp Gmbh | Pluggable connection housing with anti-kink element |
DE10055090A1 (en) * | 2000-11-07 | 2002-05-08 | Conducta Endress & Hauser | Plug-in connector for connecting a transmission line to at least one sensor, has arrangement for implementing contactless signal transfer between plug element and socket element |
US6517366B2 (en) * | 2000-12-06 | 2003-02-11 | Utilx Corporation | Method and apparatus for blocking pathways between a power cable and the environment |
US6364216B1 (en) * | 2001-02-20 | 2002-04-02 | G&W Electric Co. | Universal power connector for joining flexible cables to rigid devices in any of many configurations |
US6416338B1 (en) | 2001-03-13 | 2002-07-09 | Hubbell Incorporated | Electrical connector with dual action piston |
US6542056B2 (en) * | 2001-04-30 | 2003-04-01 | Eaton Corporation | Circuit breaker having a movable and illuminable arc fault indicator |
US6648683B2 (en) * | 2001-05-03 | 2003-11-18 | Timothy L. Youtsey | Quick connector for a coaxial cable |
US6520795B1 (en) * | 2001-08-02 | 2003-02-18 | Hubbell Incorporated | Load reducing electrical device |
EP1337022A1 (en) * | 2002-02-18 | 2003-08-20 | ABB Schweiz AG | Surrounding body for a high voltage cable and cable element, which is provided with such a surrounding body |
US7247266B2 (en) | 2002-04-10 | 2007-07-24 | Thomas & Betts International Inc. | Lubricating coating and application process for elastomeric electrical cable accessories |
US6905356B2 (en) | 2002-05-16 | 2005-06-14 | Homac Mfg. Company | Electrical connector including thermoplastic elastomer material and associated methods |
US7104823B2 (en) | 2002-05-16 | 2006-09-12 | Homac Mfg. Company | Enhanced separable connector with thermoplastic member and related methods |
US6811418B2 (en) | 2002-05-16 | 2004-11-02 | Homac Mfg. Company | Electrical connector with anti-flashover configuration and associated methods |
US7104822B2 (en) | 2002-05-16 | 2006-09-12 | Homac Mfg. Company | Electrical connector including silicone elastomeric material and associated methods |
US6790063B2 (en) | 2002-05-16 | 2004-09-14 | Homac Mfg. Company | Electrical connector including split shield monitor point and associated methods |
US6830475B2 (en) | 2002-05-16 | 2004-12-14 | Homac Mfg. Company | Electrical connector with visual seating indicator and associated methods |
US6796820B2 (en) | 2002-05-16 | 2004-09-28 | Homac Mfg. Company | Electrical connector including cold shrink core and thermoplastic elastomer material and associated methods |
DK174717B1 (en) * | 2002-05-22 | 2003-10-06 | Danfoss Drives As | Engine control containing an electronic circuit for protection against inrush currents |
US6744255B1 (en) | 2002-10-30 | 2004-06-01 | Mcgraw -Edison Company | Grounding device for electric power distribution systems |
US6709294B1 (en) * | 2002-12-17 | 2004-03-23 | Teradyne, Inc. | Electrical connector with conductive plastic features |
CA2509598C (en) * | 2002-12-23 | 2012-05-29 | Pirelli & C. S.P.A. | Method for producing a coating layer made of expandable and cross-linkable material in a cable |
US7278889B2 (en) | 2002-12-23 | 2007-10-09 | Cooper Technology Company | Switchgear using modular push-on deadfront bus bar system |
JP2005158358A (en) * | 2003-11-21 | 2005-06-16 | Mitsumi Electric Co Ltd | Connector |
US7044769B2 (en) * | 2003-11-26 | 2006-05-16 | Hubbell Incorporated | Electrical connector with seating indicator |
CA2454445C (en) | 2003-12-24 | 2007-05-29 | Thomas & Betts International, Inc. | Electrical connector with voltage detection point insulation shield |
US6843685B1 (en) * | 2003-12-24 | 2005-01-18 | Thomas & Betts International, Inc. | Electrical connector with voltage detection point insulation shield |
US7019606B2 (en) * | 2004-03-29 | 2006-03-28 | General Electric Company | Circuit breaker configured to be remotely operated |
US7059879B2 (en) | 2004-05-20 | 2006-06-13 | Hubbell Incorporated | Electrical connector having a piston-contact element |
GB0417596D0 (en) * | 2004-08-06 | 2004-09-08 | Tyco Electronics Raychem Gmbh | High voltage connector arrangement |
US7108568B2 (en) | 2004-08-11 | 2006-09-19 | Homac Mfg. Company | Loadbreak electrical connector probe with enhanced threading and related methods |
US7182647B2 (en) * | 2004-11-24 | 2007-02-27 | Cooper Technologies Company | Visible break assembly including a window to view a power connection |
US7134889B2 (en) | 2005-01-04 | 2006-11-14 | Cooper Technologies Company | Separable insulated connector and method |
US7258585B2 (en) | 2005-01-13 | 2007-08-21 | Cooper Technologies Company | Device and method for latching separable insulated connectors |
US7591693B2 (en) | 2005-01-13 | 2009-09-22 | Cooper Technologies Company | Device and method for latching separable insulated connectors |
US7413455B2 (en) | 2005-01-14 | 2008-08-19 | Cooper Technologies Company | Electrical connector assembly |
US7212389B2 (en) * | 2005-03-25 | 2007-05-01 | Cooper Technologies Company | Over-voltage protection system |
US7083450B1 (en) | 2005-06-07 | 2006-08-01 | Cooper Technologies Company | Electrical connector that inhibits flashover |
US7247061B2 (en) | 2005-06-30 | 2007-07-24 | Tyco Electronics Corporation | Connector assembly for conductors of a utility power distribution system |
US7450363B2 (en) * | 2005-07-11 | 2008-11-11 | Cooper Technologies Company | Combination electrical connector |
US7491075B2 (en) * | 2005-07-28 | 2009-02-17 | Cooper Technologies Company | Electrical connector |
US7341468B2 (en) * | 2005-07-29 | 2008-03-11 | Cooper Technologies Company | Separable loadbreak connector and system with shock absorbent fault closure stop |
US7384287B2 (en) * | 2005-08-08 | 2008-06-10 | Cooper Technologies Company | Apparatus, system and methods for deadfront visible loadbreak |
US7488916B2 (en) * | 2005-11-14 | 2009-02-10 | Cooper Technologies Company | Vacuum switchgear assembly, system and method |
-
2008
- 2008-04-11 US US12/082,717 patent/US7878849B2/en active Active
-
2009
- 2009-04-06 WO PCT/US2009/039658 patent/WO2009126574A2/en active Application Filing
- 2009-04-10 TW TW098112084A patent/TW200950216A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4377547A (en) * | 1982-01-18 | 1983-03-22 | Minnesota Mining And Manufacturing Company | Molded high voltage splice body |
US5114357A (en) * | 1991-04-29 | 1992-05-19 | Amerace Corporation | High voltage elbow |
US5788535A (en) * | 1996-09-11 | 1998-08-04 | Augat/Lrc Electronics, Inc. | Adaptor assembly |
US6042407A (en) * | 1998-04-23 | 2000-03-28 | Hubbell Incorporated | Safe-operating load reducing tap plug and method using the same |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102820565A (en) * | 2011-12-31 | 2012-12-12 | 中航光电科技股份有限公司 | Mixed-loading connector |
EP2819250A1 (en) * | 2013-06-26 | 2014-12-31 | 3M Innovative Properties Company | Cable connection device |
Also Published As
Publication number | Publication date |
---|---|
US20090258547A1 (en) | 2009-10-15 |
US7878849B2 (en) | 2011-02-01 |
TW200950216A (en) | 2009-12-01 |
WO2009126574A3 (en) | 2009-12-30 |
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