US3588319A - Condenser type terminal devices employing unit insulating cylinders - Google Patents

Condenser type terminal devices employing unit insulating cylinders Download PDF

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Publication number
US3588319A
US3588319A US881960A US3588319DA US3588319A US 3588319 A US3588319 A US 3588319A US 881960 A US881960 A US 881960A US 3588319D A US3588319D A US 3588319DA US 3588319 A US3588319 A US 3588319A
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unit insulating
electrodes
insulating cylinders
clearance
center conductor
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Expired - Lifetime
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US881960A
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English (en)
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Tokio Isogai
Takashi Tahara
Toshio Inoue
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Hitachi Ltd
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Hitachi Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • a condenser-type terminal device comprising a plurality of unit insulating cylinders enclosing a center conductor and being fixed thereto, said unit insulating cylinders being opposed to each other across a clearance intersecting the axis of the center conductor at a predetermined oblique angle, and, further, equipotential electrodes in the unit insulating cylinders opposed to each other with a clearance therebetween being arranged in staggered relation.
  • the present invention relates to a condenser-type terminal device.
  • condenser-type terminal devices such as bushings and the like which are used with these equipment and apparatus will inevitably tend to be larger in size, thereby furthering the aforesaid trend toward the larger and heavier equipment and apparatus.
  • the larger and heavier equipment and apparatus are objectionable from various aspects such as materials and manufacturing equipment and techniques, it will be significant to contemplate the provision of smaller and more compact condenser-type terminal devices as far as possible.
  • insulating cylinders Since the length of insulating cylinders for condenser-type terminal devices will become longer substantially in proportion to the magnitude of working voltages, the length of those which are used on the ultrahigh voltages will naturally exceed meters. In the past, however, insulating cylinders have been subject to various restrictions imposed by the layers of electrode disposed in the insulating cylinders, the width of insulating paper used as the insulating material and the dimensions of various manufacturing equipment such as resin impregnating apparatus, and thus their manufacture was not an easy matter and, even if they were manufactured, they could not be produced economically.
  • the high-voltage condenser-type terminal devices have hitherto been made by securely mounting successively a plurality of unit insulating cylinders on a center conductor, instead of mounting on the center conductor a long insulating cylinder comprising layers of electrode formed therein.
  • each of the plurality of unit insulating cylinders with layers of electrode disposed therein were previously formed, for example, in the resin potting or encapsulating process and the preformed insulating cylinders were then securely mounted successively on the center conductor to enclose the latter, or the respective unit insulating cylinders were successively wound directly around the center conductor, and when insulating material such as oil or the like was filled into a clearance formed between the respective unit insulating cylinders to provide a thus completed device with the equal electrical and mechanical properties as the condenser-type terminal device comprising a single and long insulating cylinder mounted on the center conductor.
  • the insulating cylinders were surrounded with porcelain tubes or insulators which were then filled with oil or the like.
  • the creepage breakdown voltage at the clearance portion would not depend on the creeping distances of the unit insulating cylinders facing the clearance, but it would largely be determined by the distance between the innermost layer and outermost layer electrodes of the plurality of electrodes disposed in the unit insulating cylinders or the integrated distances which are normal to the equipotential surface.
  • the equipotential surfaces of the respective electrodes in the unit insulating cylinder intersect the clearance practically at right angles to thereby increase the integrated distance normal to the equipotential surfaces, or alternately, if the equipotential surfaces are generally parallel with the axis of the center conductor, it is desirable to increase the interelectrode distance between the innermost layer and outermost layer electrodes in the unit insulating cylinder to thereby substantially increase the creeping distance.
  • An object of the present invention is therefore to make it possible to easily manufacture a condenser-type terminal device, more particularly a high-voltage condenser-type terminal device comprising a center conductor, a plurality of unit insulating cylinders securely mounted on said center conductor to enclose said conductor, each of said insulating cylinders having formed therein plural layers of electrode disposed substantially concentrical with said center conductor, and a mounting flange securely fixed to the unit insulating cylinders.
  • Another object of the present invention is to provide a condenser-type terminal device which is smaller and can be economically manufactured as compared with the conventional devices of this type.
  • a still further object of the present invention is to provide a condenser-type terminal device wherein a plurality of unit insulating cylinders securely fixed to a center conductor to enclose said conductor are opposed to each other across a clearance crossing the axis of the center conductor at a predetermined oblique angle, and the equipotential surfaces of electrodes intersect said clearance substantially at right angles, whereby the improvements in electrical properties such as dielectric breakdown strength and corona discharge are attained by the clearance defined by opposing unit insulating cylinders.
  • the present invention is characterized by a condenser-type terminal device comprising a center conductor, a plurality of unit insulating cylinders securely fixed to the center conductor to enclose said conductor, the unit insulating cylinders being opposed to each other across a clearance crossing the axis of the center conductor at a predetermined oblique angle, plural layers of electrodes formed in the respective unit insulating cylinders substantially concentric with the center conductor, means for providing the electrodes in the unit insulating cylinders opposed across the clearance with electrical potentials such that the equipotential electrodes in one of the unit insulating cylinders whose opposing face forms an acute crossing angle with the axis of the center conductor are placed toward the center conductor nearer than the equipotential electrodes in the other unit insulating cylinder and a mounting flange securely fixed to the outer surface of the unit insulating cylinders.
  • FIG. 1 is a partially sectional front view showing an example of the condenser-type terminal device of the present invention which is covered by a porcelain tube or insulator, wherein the center conductor is enclosed by two unit insulating cylinders fixed thereto and opposed to each other with a clearance defined therebetween, the clearance crossing the axis of the center conductor at a predetermined oblique angle;
  • FIG. 2, FIG. 3 and FIG. 4 are partially sectional front views of different types of the condenser-type terminal device according to the present invention with their porcelain tube being removed, FIG. 2 showing an example wherein two unit insulating cylinders are securely fixed to a center conductor to enclose the latter as is the case with FIG. I, but its clearance crosses the axis of the center conductor at a predetermined oblique angle different from that of FIG. 1 and one of the unit insulating cylinders is provided with two groups of electrodes each comprising plural layers of the electrodes in juxtaposition to the axis of the center conductor, FIG.
  • FIG. 3 showing another example comprising two unit insulating cylinders in the first stratum and one in the second stratum with the respective unit insulating cylinders being securely fixed to the center conductor to enclose the latter
  • FIG. 4 showing still another example wherein unit insulating cylinders securely fixed to a center conductor to enclose the latter comprise three cylinders in the first stratum, two in the second stratum and one in the outermost stratum;
  • FIG. 5 and FIG. 6 are enlarged views respectively showing the equipotential electrodes in the unit insulating cylinders opposed to each other across a clearance crossing the axis of the center conductor at a predetermined oblique angle;
  • FIG. 7 is a graph showing the relationship between an angle 0 formed by the surface of the clearance crossing the axis of the center conductor at a predetermined oblique angle and the equipotential surfaces intersecting the clearance, and the corona discharge voltage E;
  • FIG. 8 is a longitudinal sectional view showing an example of another condenser-type terminal device wherein unit insulating cylinders are securely fixed to two center conductors joined together by connecting means.
  • a condenser-type terminal device 10 comprises a center conductor 11 centrally extending in the axial direction'and having a given current carrying capacity and moreover two unit insulating cylinders 12 and 13 enclose the center conductor 11 and are securely fixed thereto.
  • the unit insulating cylinders 12 and 13 are mounted on the center conductor 11 to oppose each other across a small clearance 14 which crosses the axis of the center conductor 11 at a predetermined oblique angle.
  • the clearance 14 is then filled with insulating material such as degassed oil (not shown) to reduce the generation of corona.
  • the unit insulating cylinders 12 and 13 are provided with plural layers of electrodes 15 and l6 composed of metal foils, for instance, and disposed substantially concentrical with the center conductor 1 I.
  • a mounting flange 17 Securely fixed to the outer surfaces of the unit insulating cylinders is a mounting flange 17 for mounting the condenser-type terminal device 10 onto the oil tank wall or the like of an apparatus, and the unit insulating cylinder 12 is enclosed by a porcelain tube or insulator 18 which is filled with oil 19 and provided with an upper chamber 20 on the upper end thereof to compensate for the expansion and shrinkage of the oil 19.
  • the aforesaid porcelain tube 18, the oil 19 filled within the tube 18 and the upper chamber 20 disposed on the upper end of the tube 18 are not essential in the condenser-type terminal device according to the present invention, therefore, they are not specifically mentioned in the description of embodiments other than that of FIG. 1.
  • the plurality of electrodes 15 and 16 in the unit insulating cylinders 12 and 13 facing each other across the clearance 14 have the properly determined potentials. In FIG.
  • the innermost layer electrodes are made equipotential with the center conductor 11 by potential imparting means 21 and 22 such as lead wires and the outermost layer electrodes are rendered to be of the same potential as the mounting flange 17 by potential imparting means 23 and 24 such as lead wires, whereby the equipotential electrodes in the unit insulating cylinders 12 and 13 positioned on opposite sides of the clearance 14 are so arranged that the unit insulating cylinder 13 placed on one side of the clearance, where the crossing angle between its opposing face and the axis of the center conductor 11 forms an acute angle, contains its equipotential electrodes 16 positioned nearer the center conductor 11 than the respective equipotential electrodes 15 in the other unit insulating cylinder 12, with a result that the equipotential surfaces intersect the clearance 14 of a predetermined oblique angle at a preset angle.
  • the respective equipotential electrodes 15 and 16 are disposed in the unit insulating cylinders 12 and 13 on opposite sides of the clearance 14 so that the unit insulating cylinder 13 placed on one side of the clearance, where the crossing angle between the clearance 14 and the axis of the center conductor 11 is an acute angle, contains its equipotential electrodes 16 positioned nearer the center conductor 11 than those in the other unit insulating cylinder, the equipotential surfaces, which extend between the respective equipotential electrodes, and the clearance 14 intersect each other at an angle 0.
  • the creepage breakdown voltage at the clearance 14 depends on the integrated distance normal to the equipotential surface intersecting the clearance 14, so it will be understood that, when a unit insulating cylinder has n layers of electrode and 1. represents the distance between given electrodes normal to the equipotential surface, the integrated distance is given by Ln sin 6. In this case, if 0 is 11/2, the maximum integrated distance normal to the equipotential surfaces for each unit insulating cylinder may be obtained.
  • FIG. 5 shows an instance where the crossing angle 0 between the clearance 14 and the equipotential surface is given by 1r/2
  • FIG. 6 shows another instance where the angle 0 is smaller than 1r/2, and it will be evident that, in FIG. 6, the distance 1 between the electrodes normal to the equipotential surfaces is naturally shorter than the case that the crossing angle is 1r/2.
  • FIG. 7 shows the relationship between the crossing angle 0 made by the intersection of the equipotential surfaces with the clearance and the corona discharge voltage E which has an important effect on the breakdown voltage of condenser-type terminal devices, and it is desirable to use insulating cylinders within the hatched region in the graph, because the corona discharge voltage E will be maximum when the crossing angle 6 is 11/2, namely, the clearance and the equipotential surfaces cross each other at right angles, and the corona discharge voltage decreases when the angle 0 is either smaller or larger than 1r/2. Accordingly, by making the clearance and the equipotential surfaces cross each other substantially at right angles, it is possible to raise the breakdown voltage of condenser-type terminal devices and to manufacture them easily and economically.
  • the cylinders 12 and 13 may be opposed to each other across the clearance 14 which crosses the axis of the center conductor 11 at a predetermined oblique angle, further, the equipotential electrodes in the unit insulating cylinder 13 located on one side of the clearance where the crossing angle between the center conductor 11 and the clearance becomes an acute angle, may be positioned nearer the center conductor 11 than those in the other unit insulating cylinder 12 tothereby make the clearance 14 and the equipotential surfaces intersect each other substantially at right angles.
  • the objects of the present invention may be attained satisfactorily.
  • a condenser-type terminal device 30 comprises, as is the case with the one shown in FIG. 1, a center conductor 31 having a given current carrying capacity, two unit insulating cylinders 32 and 33 which encloses and are fixed to the center conductor in opposed relation with each other across a clearance 34, and a mounting flange 37 securely fixed onto some portions of the outer surfaces of the unit insulating cylinders 32 and 33.
  • the clearance 34 across which the two unit insulating cylinders 32 and 33 face each other makes an oblique angle different from that of FIG. 1 between itself and the axis of the center conductor 31.
  • the unit insulating cylinder 33 contains only one group of plural layers of electrodes 36 disposed substantially concentric with the center conductor 31, the other unit insulating cylinder 32 located on the opposite side of the clearance 34 contains two groups of plural layers of electrodes 35a and 35b which are disposed in juxtaposition with respect to the axis of the center conductor 31.
  • the electrodes 35b in one of the two groups are disposed so that the corresponding equipotential electrodes are placed nearer to the center conductor 31, whereby, as explained in conjunction with FIG. 1, the clearance 34 and the equipotential surfaces intersect each other substantially at right angles.
  • the plural layers of electrodes 35a in the other group are disposed in order to improve the potential distribution on the surface of one end of the unit insulating cylinder 32 reverse to its end facing the clearance 34. Consequently, the group of plural layers of electrodes 35a, which does not face the clearance 34, are placed farther than the group of plural layers of electrodes 35b with respect to the center conductor 31.
  • the innermost layer electrodes and the outermost layer electrodes are respectively interconnected equipotentially by connecting means 38 and 39 such as lead wires to thereby determine the potential of the respective layers.
  • the interconnection between the center conductor and the innermost layer ones of the electrodes 35a, 35b and 36 in the unit insulating cylinders 32 and 33, and the interconnection between the outermost layer ones thereof and the mounting flange 37 are respectively provided to maintain equipotentially by means of potential im parting means 40, 41, 42 and 43 such as lead wires so as to attain the aforesaid effects.
  • the clearance 34 is filled with insulating material such as degassed oil to further improve the withstand voltage of this portion.
  • insulating material such as degassed oil to further improve the withstand voltage of this portion.
  • Such insulating material should preferably be filled through the vacuum injection process or the like to completely eliminate the void which may cause the corona discharge within the clearance 34.
  • a condenser-type terminal device 50 is adapted for use with higher voltages than the devices shown in FIGS. 1 and 2, and it comprises, as is the 'case with the device shown in FIG. 2, a center conductor 31, two unit insulating cylinders 32 and 33 in the first stratum which enclose and are securely fixed to said conductor 31 opposing to each other interposing a clearance 34 therebetween, a unit insulating cylinder 51 of the second stratum securely mounted 'over the first-stratum cylinders, and a mounting flange 37 securely fixed to the outer surface of the unit insulating cylinder 51.
  • the second-stratum unit insulating cylinder 51 has plural layers of electrodes 52 disposed concentrically with the center conductor 31; These unit insulating cylinders 32, 33 and 51 in the first and second strata bear their respective burdens of the high voltages by virtue of the electrostatic capacities of the electrodes 35a, 35b, 36 and 52.
  • the innermost layer electrode is equipotentially connected with the outermost layer electrodes in the unit insulating cylinders 32 and 33 in the first stratum respectively, and the outermost layer electrode with the mounting flange 37 by means of the respective potential imparting means 53,54 and 55 such as lead wires.
  • a condenser-type terminal device 60 shown in FIG. 4 is adapted for use on the still higher voltages than the abovedescribed devices shown in FIGS. 1 to 3, and it comprises a center conductor 61, six unit insulating cylinders 62 to 67 in three strata which enclose and are securely fixed to the center conductor 61, and a mounting flange 68 securely fixed to the outer surface of the outermost-stratum unit insulating cylinder 67.
  • the three unit insulating cylinders 62, 63 and 64 in the first stratum and the two unit insulating cylinders 65 and 66 in the second stratum are mounted so that they are respectively opposed to one another across clearances 69, 70 and 71 which intersect the axis of the center conductor 61 at preset oblique angles and are filled with an insulating material respectively.
  • the four unit insulating cylinders 62 to 65 are respectively provided with two groups of plural layers of electrodes 72a, 72b, 75a and 75b which are disposed substantially concentric with the center conductor 61 and in juxtaposition with the axis of the center conductor 61, while the remaining two unit insulating cylinders 66 and 67 are respectively provided with one group comprising plural layers of electrodes 76 or 77 which are disposed substantially concentrical with the center conductor 61.
  • the innermost layer electrodes and the outermost layer electrodes are equipotentially interconnected respectively, as previously described, by means of connecting means such as lead wires, which are not designated by any numerals in the FIGS. to thereby determine the potentials of the individual electrodes.
  • the innermost layer electrodes and the outermost layer electrodes are, as described in conjunction with FIG. 3, made equipotential with the center conductor 61, the mounting flange 68, or the outermost layer electrodes or the innermost layer electrodes of the adjacent electrodes by potential imparting means such as lead wires which are not designated by any numerals in the FIG., thereby determining the potential of the respective electrodes and simultaneously protecting those portions, where the unit insulating cylinders are mounted, from being electrically weakened.
  • the respective plural layers of electrodes in the unit insulating cylinders 62 through 66 opposed to one another across the clearances 69, 70 and 71 which intersect the axis of the center conductor 61 at predetermined angles are so arranged that, of the equipotential electrodes 72b through 76, those disposed in the unit insulating cylinders which are located on such sides of the clearances 69, 70 and 71, where the crossing angles made by the clearances and the axis of the center conductors 61 are acute angles, are positioned nearer the center conductor 61 than the electrodes in the opposite insulating cylinders, whereby the respective clearances and the equipotential surfaces intersect each other substantially at right angles, thus making it possible to satisfactorily attain the objects of the present invention.
  • the juxtaposed two groups of plural layers of electrodes 72a, 72b, 75a and 75b in the unit insulating cylinders 62 through 65 may be, as will be seen from the HO, positioned at equal distances from the center conductor 61 as shown in some unit insulating cylinders, or they may be placed in dif ferent positions as shown in other unit insulating cylinders, and these two groups of plural layers of electrodes are dif ferently disposed so that the respective clearances and thc equipotential surfaces may intersect each other substantially at right angles.
  • unit insulating cylinders on opposite sides of clearances which intersect the center conductor at predetermined oblique angles and further to make the respective clearances and the equipotential surfaces intersect each other substantially at right angles so that the objects of the present invention may be satisfactorily attained.
  • the number of the strata and the number of unit insulating cylinders will be determined by the dimensions of condensertype terminal devices which in turn depend on the working voltages, the manufacturing equipment, etc., although there may be a eertainlimit because the complexity in manufacturing will be caused by an excessively large number thereof and will prevent satisfactory attainment of the objects of the present invention.
  • a condenser-type terminal device 80 which is employed in an application wherein electrical connection is provided by means of connecting means 83 such as a tulip-type connector between a center conductor 81 in an apparatus such as a transformer in a gassed power installation, where the conductor is covered with a casing 84a which is filled with an insulating gas, and another center conductor 82 of another apparatus such as a circuit breaker, where the conductor 82 is covered with a casing 84b which is also filled with an insulating gas.
  • connecting means 83 such as a tulip-type connector between a center conductor 81 in an apparatus such as a transformer in a gassed power installation, where the conductor is covered with a casing 84a which is filled with an insulating gas, and another center conductor 82 of another apparatus such as a circuit breaker, where the conductor 82 is covered with a casing 84b which is also filled with an insulating gas.
  • the center conductors 81 and 82 are provided with unit insulating cylinders 85 and 86 which enclose and are securely fixed to these conductors respectively and mounting flanges 87 and 88 which are securely fixed onto the outer surfaces ofv the cylinders 85 and 86 respectively.
  • the mounting flanges 87 and 88 are then mounted on the casings 84a and 84b which enclose the center conductors 81 and 82 so that the unit insulating cylinders 85 and 86 may serve as supporting members for these center conductors.
  • the unit insulating cylinders 85 and 86 are opposed to each other across a clearance 89 which, at a predetermined oblique angle, intersects the axis of the center conductors 81 and 82 which has been interconnected by the connecting means 83, and further, plural layers of electrodes 90 and 91 are disposed in the respective cylinders substantially concentric with the center conductors 81 and 82.
  • the innermost layer electrodes and the outermost layer electrodes are equipotentially connected with the center conductors 81 and 82 and the mounting flanges 87 and 88, respectively, by means of connecting means 92 to 95 such as lead wires to thereby determine the potentials of the respective electrodes.
  • the electrodes 91 are so disposed that they are disposed nearer the center conductor 82 than the corresponding equipotential electrodes in the other unit insulating cylinder 85 located on the other side of the clearance, whereby the clearance 89 and the intersecting equipotential surfaces cross each other substantially at right angles, thus, the creeping breakdown at the clearance is prevented to thereby attain the objects of the present invention.
  • the portion of the device where the unit insulating cylinders 85 and 86 are opposed to each other across the clearance 89 is enclosed with an intermediate connection casing 96 to provide a connection between the mounting flanges 87 and 88 and also to protect this portion from contamination.
  • This intermediate connection casing 96 is then filled with an insulating material such as oil or insulating gas of the same kind as employed in the casings 84a and 84b to further improve the electrical properties of the device at the clearance 89.
  • the unit insulating cylinders 85 and 86 mounted on the conductors and facing each other across the clearance 89 will be exposed to air and moreover the clearance 89 will be made wider due to the relative movement of the conductors, as a result, the clearance 89 and the equipotential surfaces may not cross each other at right angles.
  • the connection and disconnection of the conductors may be effected to remain within the region shown by a hatched portion in FIG. 7, the creeping breakdown at the clearance 89 may be avoided, therefore, there will be no need to increase the dimensions of the condenser-type terminal device. 7
  • the unit insulating units 85 and 86 mounted on the center conductors 81 and 82 may include two or more groups of electrodes, provided that this does not prevent the clearance 89 and the equipotential surfaces from intersecting each other substantially at right angles. Moreover, if one of the unit insulating cylinders tends to be rather large, it may be substituted by a plurality of smaller unit insulating cylinders which are opposed to one another across the respective clearances to maintain the previously described arrangements.
  • the unit insulating cylinders which have been employed in the above-described embodiments of the condenser-type terminal device according to the present invention and which enclose and are securely fixed to the center conductor or conductors may be manufactured by various methods.
  • the objects of the present invention may be most satisfactorily attained if these unit insulating cylinders are preformed by alternately winding a plurality of layers of electrodes and insulating papers and the assembly is encapsulated with epoxy resin, for example.
  • a condenser-type terminal device comprising:
  • a center conductor having a predetermined current carrying capacity
  • said unit insulating cylinders being opposed to each other intcrposing a clearance therebetween, said clearance intersecting the axis of said center conductor at a predetermined oblique angle;
  • a condenser-type terminal device comprising:
  • a center conductor having a predetermined current carrying capacity
  • said unit insulating cylinders being opposed to each other interposing a clearance therebetween, said clearance intersecting the axis of said center conductor at a predetermined oblique angle;
  • a condenser-type terminal device as claimed in claim 6, further including connecting means for providing connection between the innermost layer electrodes in said first-stratum unit insulating cylinders and said center conductor, between the outermost layer electrodes in said first-stratum unit insulating cylinders and the innermost layer electrodes in the second-stratum unit insulating cylinders, and between the outermost layer electrode in the outermost-stratum unit insulatin%cylinder and the mounting flange.
  • a condenser-type terminal device comprising:
  • said unit insulating cylinders being opposed to each other interposing a clearance therebetween, said clearance intersecting the axis of said center conductors at a predetermined oblique angle;
  • an intermediate connection casing providing a connecting member between said mounting flanges and enclosing said unit insulating cylinders and said clearance across which said unit insulating cylinders face each other.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
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US881960A 1968-12-11 1969-12-04 Condenser type terminal devices employing unit insulating cylinders Expired - Lifetime US3588319A (en)

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JP43090241A JPS499837B1 (enrdf_load_stackoverflow) 1968-12-11 1968-12-11

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US3588319A true US3588319A (en) 1971-06-28

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JP (1) JPS499837B1 (enrdf_load_stackoverflow)
CH (1) CH506165A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793477A (en) * 1973-01-19 1974-02-19 Westinghouse Electric Corp Condenser bushing having displaced gaps between conducting layers
US4227035A (en) * 1978-05-15 1980-10-07 Westinghouse Electric Corp. Modular condenser bushing
US4228318A (en) * 1978-01-16 1980-10-14 G & W Electric Specialty Company Method and means for dissipating heat in a high voltage termination
US5130495A (en) * 1991-01-24 1992-07-14 G & W Electric Company Cable terminator
US5198622A (en) * 1989-10-13 1993-03-30 Asea Brown Boveri Ab Condenser body for the field control of the connection of a transformer bushing
US20090047801A1 (en) * 2007-08-14 2009-02-19 Low Russell J Interfacing two insulation parts in high voltage environment
US20090323245A1 (en) * 2005-04-27 2009-12-31 Abb Technology Ltd. Device for Reduction of Voltage Derivative
US20190252871A1 (en) * 2015-11-27 2019-08-15 Siemens Aktiengesellschaft High-Voltage Device
WO2021165318A1 (de) * 2020-02-17 2021-08-26 Schneider Electric Industries Sas Durchführung
WO2021233679A1 (en) * 2020-05-19 2021-11-25 Abb Power Grids Switzerland Ag Socket
US11469014B2 (en) * 2017-07-27 2022-10-11 Siemens Energy Global GmbH & Co. KG Electrical device having an insertable high-voltage bushing
US20230071110A1 (en) * 2020-02-24 2023-03-09 Hitachi Energy Switzerland Ag Bushing with electrically conductive head mounted on condenser core
US20240203633A1 (en) * 2021-04-21 2024-06-20 Hitachi Energy Ltd Bushing comprising a condenser body and electrical facility with bushing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463951B (sv) * 1989-06-19 1991-02-11 Asea Brown Boveri Styrkropp foer faeltstyrning av en transformatorgenomfoerings anslutning till en transformatorlindnings uppledare hos stroemriktartransformatorer
SE464898B (sv) * 1989-10-31 1991-06-24 Asea Brown Boveri Kondensatorkropp foer faeltstyrning av en transformatorgenomfoerings anslutning till en transformatorlindnings uppledare hos stroemriktartransformatorer

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793477A (en) * 1973-01-19 1974-02-19 Westinghouse Electric Corp Condenser bushing having displaced gaps between conducting layers
US4228318A (en) * 1978-01-16 1980-10-14 G & W Electric Specialty Company Method and means for dissipating heat in a high voltage termination
US4227035A (en) * 1978-05-15 1980-10-07 Westinghouse Electric Corp. Modular condenser bushing
US5198622A (en) * 1989-10-13 1993-03-30 Asea Brown Boveri Ab Condenser body for the field control of the connection of a transformer bushing
US5130495A (en) * 1991-01-24 1992-07-14 G & W Electric Company Cable terminator
US20090323245A1 (en) * 2005-04-27 2009-12-31 Abb Technology Ltd. Device for Reduction of Voltage Derivative
US20090047801A1 (en) * 2007-08-14 2009-02-19 Low Russell J Interfacing two insulation parts in high voltage environment
US7863520B2 (en) * 2007-08-14 2011-01-04 Varian Semiconductor Equipment Associates, Inc. Interfacing two insulation parts in high voltage environment
US20190252871A1 (en) * 2015-11-27 2019-08-15 Siemens Aktiengesellschaft High-Voltage Device
US11469014B2 (en) * 2017-07-27 2022-10-11 Siemens Energy Global GmbH & Co. KG Electrical device having an insertable high-voltage bushing
WO2021165318A1 (de) * 2020-02-17 2021-08-26 Schneider Electric Industries Sas Durchführung
CN115280434A (zh) * 2020-02-17 2022-11-01 施耐德电器工业公司 套管
US12159732B2 (en) 2020-02-17 2024-12-03 Schneider Electric Industries Sas Bushing
US20230071110A1 (en) * 2020-02-24 2023-03-09 Hitachi Energy Switzerland Ag Bushing with electrically conductive head mounted on condenser core
US12261421B2 (en) * 2020-02-24 2025-03-25 Hitachi Energy Ltd Bushing with electrically conductive head mounted on condenser core
WO2021233679A1 (en) * 2020-05-19 2021-11-25 Abb Power Grids Switzerland Ag Socket
KR20230002824A (ko) * 2020-05-19 2023-01-05 히타치 에너지 스위처랜드 아게 소켓
US20240203633A1 (en) * 2021-04-21 2024-06-20 Hitachi Energy Ltd Bushing comprising a condenser body and electrical facility with bushing

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CH506165A (de) 1971-04-15
JPS499837B1 (enrdf_load_stackoverflow) 1974-03-06

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