EP0710965A2 - Transformer structure and equipment therefor - Google Patents
Transformer structure and equipment therefor Download PDFInfo
- Publication number
- EP0710965A2 EP0710965A2 EP95307848A EP95307848A EP0710965A2 EP 0710965 A2 EP0710965 A2 EP 0710965A2 EP 95307848 A EP95307848 A EP 95307848A EP 95307848 A EP95307848 A EP 95307848A EP 0710965 A2 EP0710965 A2 EP 0710965A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformers
- transformer
- molded
- frames
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/16—Cascade transformers, e.g. for use with extra high tension
Definitions
- the present invention relates to a transformer structure and equipment therefor wherein the installation area required for power distribution transformers installed inside a cubicle can be reduced.
- transformers used for the measurement of electric current Inside cubicles which are installed at substations, etc., current transformers used for the measurement of electric current, instrument transformers used for the measurement of voltage, and relays, etc. are installed in a prescribed layout around transformers used for power distribution, and these respective components are connected by cables.
- transformers oil-containing transformers, in which a steel box is filled with an insulating oil and a transformer main body is immersed in such an oil, are generally known.
- Figure 9 is a circuit diagram of a transformer system which has generally been used in the past for three-phase/single-phase transformation, and a plurality of relays VCB and switches PCS are required therein. In the case of this system, furthermore, there is an extremely high danger of burning damage to the transformers when the load on the secondary side increases.
- the transformer structure of this application is constructed so that molded transformers 2, which are formed by molding transformers by a molding material 1 consisting of an insulating material such as a synthetic resin or synthetic rubber, etc., are positioned and fastened in place inside frames 3, and a plurality of such frames are stacked in a vertical direction.
- molded transformers 2 which are formed by molding transformers by a molding material 1 consisting of an insulating material such as a synthetic resin or synthetic rubber, etc.
- the molded transformers 2 are installed inside the frames 3 so that the central axes P of the windings of each transformer Tr are positioned vertically as shown in Figure 8. Accordingly, when a plurality of frames 3 are stacked, the lines of magnetic force (indicated by two-dot chain lines) from the molded transformers 2, 2 installed above and below interfere with each other as shown in Figure 7, thus causing the frames 3 to vibrate which leads to problems such as the generation of noise and the generation of heat.
- the present invention is devised in light of the drawbacks encountered in the prior art described above and is proposed for the purpose of solving these problems in a suitable manner.
- the object of the present invention is to provide a transformer structure and equipment thereof which make it possible to accomplish a smaller size by reducing the installation area to be occupied by the transformers inside a cubicle and which also make it possible to prevent the generation of vibrational noise and heat.
- the transformer structure of the invention of the present application is characterized in that: transformers used for power distribution are molded by an insulating material such as a synthetic resin, synthetic rubber, etc., the thus molded transformers are positioned and fastened in place inside frames so that the central axes of the windings of such molded transformers are placed horizontally, and a plurality of such frames that contain such molded transformers are stacked in the vertical direction, and the respective transformers are connected to each other by wires.
- the transformer structure of another invention of the present application is characterized in that: single-phase transformers used for power distribution are molded by an insulating material such as a synthetic resin, synthetic rubber, etc., the thus molded transformers are positioned and fastened in place inside frames so that the central axes of the windings of such molded transformers are placed horizontally, and a plurality of such frames that contain such molded transformers are stacked in the vertical direction, and the respective single-phase transformers are connected to each other by V-V wiring.
- an insulating material such as a synthetic resin, synthetic rubber, etc.
- the equipment for the transformer structure of still another invention of the present application is characterized in that: molded transformers, each of which is formed by molding a power distribution transformer by an insulating material such as a synthetic resin, synthetic rubber, etc. and current and instrument transformers, which are connected to such a molded transformer, are molded into integral units by an insulating material such as a synthetic resin, synthetic rubber, etc.
- the thus obtained transformer structures are respectively installed inside frames so that the central axes of the windings of such transformers are placed horizontally, and a transformer apparatus, which is obtained by stacking a plurality of such frames in the vertical direction and by connecting the transformers of the transformer structures which are installed inside such frames to each other by means of wires, is installed inside a cubicle.
- Figure 1 is a front view of the schematic layout of an equipment for transformer structures constituting an embodiment of one invention of the present application.
- Figure 2 is an explanatory diagram which illustrates the schematic structure of a transformer apparatus constituting an embodiment of one invention of the present application.
- Figure 3 is an explanatory diagram which illustrates the internal structure of a molded transformer used in an embodiment of one invention of the present application.
- Figure 4 is a wiring diagram of a transformer used in an embodiment of one invention of the present application.
- FIG. 5 is a circuit diagram of a transformer apparatus constituting an embodiment of the invention of the present application.
- Figure 6 is a front view of the schematic layout of transformer equipment that uses a transformer structure, constituting another embodiment of the invention of the present application.
- Figure 7 in a front view of the schematic layout of transformer equipment that uses a transformer structure proposed in a previous application filed by the present applicant.
- Figure 8 is an explanatory diagram which illustrates the internal structure of the molded transformer shown in Figure 7.
- Figure 9 is a circuit diagram of a transformer system constituting prior art.
- FIG 1 shows the schematic layout of the transformer equipment for a transformer structure according to the embodiment, and a transformer apparatus 16, which is formed by stacking and connecting two frames 14, 14, each containing a transformer structure 12, in the vertical direction, is installed inside a cubicle 10.
- each of the frames 14 is formed as a rectangular frame including an upper frame member 18 and a lower frame member 20, and a transformer structure 12 is positioned and fastened in between.
- the upper frame 14 and the lower frame 14 are connected by fastening the lower frame member 20 of the upper frame 14 to the upper frame member 18 of the lower frame 14 by means of bolts in a multiple number of locations.
- Each of the transformer structures 12 consists of a single-phase transformer Tr used for power distribution, a current transformer CT and an instrument transformer PT; and these respective transformers are connected to each other. More specifically, as shown in Figure 2, the single-phase transformer Tr is molded by a molding material 26, which is an insulating material, so as to obtain a molded transformer 23, and the current transformer CT and the instrument transformer PT are connected to the primary side of the single-phase transformer Tr which is inside the molded transformer 23. Furthermore, the molded transformer 23, current transformer CT and instrument transformer PT are all molded into an integral unit by a molding material 28, which consists of an insulating material such as a synthetic resin, synthetic rubber, etc., so that no high-voltage parts are exposed to the outside.
- a molding material 28 which consists of an insulating material such as a synthetic resin, synthetic rubber, etc.
- the transformer structures 12 which are molded by the molding material 28 are extremely safe structures, since there is absolutely no danger of fire due to the leakage of oil which is caused by transformers falling over as in conventional oil-containing transformers.
- the molding materials 26 and 28 may be a synthetic resin such as an epoxy, polyester resin, etc. or a synthetic rubber such as a butyl rubber, ethylene-propylene rubber, etc.
- the molded transformers 23 are installed inside the corresponding frames 14 so that as shown in Figure 3 the central axes P of the windings 30 of the transformer Tr are oriented horizontally.
- the transformer structures 12, 12 are stacked as shown in Figure 1, the lines of magnetic force (indicated by two-dot chain lines) generated by the molded transformers 23, 23 positioned above and below are prevented from interfering with each other.
- vibrational noise and heat caused by the interference of lines of magnetic force can be prevented.
- An ammeter A which is connected to the current transformer CT and a voltmeter V which is connected to the instrument transformer PT are disposed outside the molding material 28. These ammeter A and voltmeter V are digital instruments which can perform measurements using a small current. The heat dissipating effect can be improved by forming through-holes in the molding material 28 in positions corresponding to the current transformer CT and instrument transformer PT.
- the single-phase transformer Tr in the molded transformer 23 of the upper transformer structure 12 and the single-phase transformer Tr in the molded transformer 23 of the lower transformer structure 12 are as shown in Figure 4 connected by V-V wiring; and three-phase AC transformation is performed by U, V, W-u, v, w, and a single-phase alternating current is extracted from o.
- the wiring is different-capacity V-V wiring wherein, for example, a 200 KVA single-phase transformer Tr is installed on the upper side and a 300 KVA single-phase transformer Tr is installed on the lower side.
- a relay VCB is connected to the current transformer CT and to the instrument transformer PT which are connected to the primary side of the single-phase transformer Tr in the molded transformer 23.
- the relay VCB is separated from the transformer structure 12; however, it would be possible to mold the relay VCB integrally with the transformer structure 12.
- this embodiment of the transformer apparatus 16 is extremely simple and is able to withstand the load applied to the secondary side of the transformers so that burning damage to the transformers Tr can be prevented.
- the reference numeral 32 in Figure 1 indicates blowers such as silocco fans, etc., which are installed in the cubicle 10.
- a cooling effect can be obtained by using the blowers 32 so as to introduce outside air into the cubicle 10.
- An air exhaust port (not shown) is formed in the side of the cubicle 10.
- the blowers 32 on the frames 14 which contain the transformer structures 12 so that air is blown directly onto the transformer structures 12 by such blowers 32.
- each individual transformer structure 12 is constructed by using the molding material 28 so as to mold the molded transformer 23, current transformer CT and instrument transformer PT into an integral unit.
- a plurality of such transformer structures 12 can be stacked in the vertical direction, and the installation area occupied by the transformers inside the cubicle 10 can be reduced.
- the cubicle 10 can be installed either outdoors or indoors, and the space in the installation location can be effectively utilized as a result of the reduction in the installation area.
- the electrical wiring system can be supplied as a system for a single transformer structure 12.
- the transformer structures by installing the transformer structures in a stacked fashion, the lines of magnetic force generated by the molded transformers 23, 23 positioned above and below are prevented from interfering with each other; accordingly, vibrational noise and heat generated by such interference of lines of magnetic force can be prevented.
- the transformer apparatus 16 in which, for example, a 200 KVA transformer Tr is installed above and a 300 KVA transformer Tr is installed below can be quickly and simply converted into a transformer apparatus 16 in which, for example, a 300 KVA transformer Tr is installed above and a 500 KVA transformer Tr is installed below.
- working time can be shortened and costs can be reduced.
- the current transformers CT and instrument transformers PT are also molded, it is possible to increase the useful life of these transformers. As a result, there is almost no need for maintenance or inspection; and the working characteristics of the system do not suffer despite the fact that the transformer structures can be stacked in the vertical direction.
- two transformer structures which are equipped with single-phase transformers are stacked; however, as shown in Figure 6, it would be possible to stack, for example, three transformer structures 12 that contain single-phase transformers. In addition, it would also be possible to stack four or more transformer structures. Moreover, it would also be possible to stack transformer structures equipped with three-phase transformers or to stack a combination of transformer structures equipped with single-phase transformers and transformer structures equipped with three-phase transformers. In addition, it would also be possible to integrally mold AVR's (automatic voltage regulators), LRD's, WW's, etc. inside the transformer structures.
- AVR's automatic voltage regulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformers For Measuring Instruments (AREA)
- Insulating Of Coils (AREA)
- Patch Boards (AREA)
Abstract
Description
- The present invention relates to a transformer structure and equipment therefor wherein the installation area required for power distribution transformers installed inside a cubicle can be reduced.
- Inside cubicles which are installed at substations, etc., current transformers used for the measurement of electric current, instrument transformers used for the measurement of voltage, and relays, etc. are installed in a prescribed layout around transformers used for power distribution, and these respective components are connected by cables. In regard to the transformers, oil-containing transformers, in which a steel box is filled with an insulating oil and a transformer main body is immersed in such an oil, are generally known.
- Here, in cases where the transformation of a 3-phase AC current is accomplished using three single-phase transformers, the respective transformers are lined up in the lateral direction and connected by wires. As a result, the installation area occupied by the transformers inside each of the cubicles is increased, so that the size of the cubicles themselves is also increased. The reason for this is that when the oil-containing transformers are used as described above, the transformers are not stacked vertically because of the danger that a fire might be ignited if the transformers should fall over during a disaster such as an earthquake, etc. Furthermore, it has also been pointed out that the vertical stacking of transformers makes maintenance and inspection of the individual transformers extremely difficult. In such cases, furthermore, the work of connecting current transformers, instrument transformers and relays, etc. to the respective power transformers is difficult and time-consuming, and the level of danger is increased as a result of high-voltage parts which are exposed inside the cubicles.
- Figure 9 is a circuit diagram of a transformer system which has generally been used in the past for three-phase/single-phase transformation, and a plurality of relays VCB and switches PCS are required therein. In the case of this system, furthermore, there is an extremely high danger of burning damage to the transformers when the load on the secondary side increases.
- One proposal for dealing with the various problems described above has been submitted by the present applicant as an invention titled "TRANSFORMER STRUCTURE AND EQUIPMENT THEREOF" (Japanese Patent Application No. 6-60264). As shown in Figure 7, the transformer structure of this application is constructed so that molded
transformers 2, which are formed by molding transformers by amolding material 1 consisting of an insulating material such as a synthetic resin or synthetic rubber, etc., are positioned and fastened in place insideframes 3, and a plurality of such frames are stacked in a vertical direction. In this structure, there is absolutely no danger of any fire occurring due to oil leakage as a result of transformers falling over as in the case of conventional oil-containing transformers. Accordingly, this system is extremely safe. In addition, since a plurality of transformers are stacked in the vertical direction, the installation area can be greatly reduced. - In the transformer structure described above, the
molded transformers 2 are installed inside theframes 3 so that the central axes P of the windings of each transformer Tr are positioned vertically as shown in Figure 8. Accordingly, when a plurality offrames 3 are stacked, the lines of magnetic force (indicated by two-dot chain lines) from the moldedtransformers frames 3 to vibrate which leads to problems such as the generation of noise and the generation of heat. - The present invention is devised in light of the drawbacks encountered in the prior art described above and is proposed for the purpose of solving these problems in a suitable manner. The object of the present invention is to provide a transformer structure and equipment thereof which make it possible to accomplish a smaller size by reducing the installation area to be occupied by the transformers inside a cubicle and which also make it possible to prevent the generation of vibrational noise and heat.
- In order to achieve the object, the transformer structure of the invention of the present application is characterized in that:
transformers used for power distribution are molded by an insulating material such as a synthetic resin, synthetic rubber, etc.,
the thus molded transformers are positioned and fastened in place inside frames so that the central axes of the windings of such molded transformers are placed horizontally, and
a plurality of such frames that contain such molded transformers are stacked in the vertical direction, and the respective transformers are connected to each other by wires. - Furthermore, in order to achieve the object, the transformer structure of another invention of the present application is characterized in that:
single-phase transformers used for power distribution are molded by an insulating material such as a synthetic resin, synthetic rubber, etc.,
the thus molded transformers are positioned and fastened in place inside frames so that the central axes of the windings of such molded transformers are placed horizontally, and
a plurality of such frames that contain such molded transformers are stacked in the vertical direction, and the respective single-phase transformers are connected to each other by V-V wiring. - In addition, in order to achieve the object, the equipment for the transformer structure of still another invention of the present application is characterized in that:
molded transformers, each of which is formed by molding a power distribution transformer by an insulating material such as a synthetic resin, synthetic rubber, etc. and current and instrument transformers, which are connected to such a molded transformer, are molded into integral units by an insulating material such as a synthetic resin, synthetic rubber, etc. so as to obtain transformer structures,
the thus obtained transformer structures are respectively installed inside frames so that the central axes of the windings of such transformers are placed horizontally, and
a transformer apparatus, which is obtained by stacking a plurality of such frames in the vertical direction and by connecting the transformers of the transformer structures which are installed inside such frames to each other by means of wires, is installed inside a cubicle. - Figure 1 is a front view of the schematic layout of an equipment for transformer structures constituting an embodiment of one invention of the present application.
- Figure 2 is an explanatory diagram which illustrates the schematic structure of a transformer apparatus constituting an embodiment of one invention of the present application.
- Figure 3 is an explanatory diagram which illustrates the internal structure of a molded transformer used in an embodiment of one invention of the present application.
- Figure 4 is a wiring diagram of a transformer used in an embodiment of one invention of the present application.
- Figure 5 is a circuit diagram of a transformer apparatus constituting an embodiment of the invention of the present application.
- Figure 6 is a front view of the schematic layout of transformer equipment that uses a transformer structure, constituting another embodiment of the invention of the present application.
- Figure 7 in a front view of the schematic layout of transformer equipment that uses a transformer structure proposed in a previous application filed by the present applicant.
- Figure 8 is an explanatory diagram which illustrates the internal structure of the molded transformer shown in Figure 7.
- Figure 9 is a circuit diagram of a transformer system constituting prior art.
- Next, the transformer structure and equipment therefor of the invention of the present application will be described in terms of preferred embodiments with reference to the accompanying drawings.
- Figure 1 shows the schematic layout of the transformer equipment for a transformer structure according to the embodiment, and a
transformer apparatus 16, which is formed by stacking and connecting twoframes transformer structure 12, in the vertical direction, is installed inside acubicle 10. As shown in Figure 1, each of theframes 14 is formed as a rectangular frame including anupper frame member 18 and alower frame member 20, and atransformer structure 12 is positioned and fastened in between. Theupper frame 14 and thelower frame 14 are connected by fastening thelower frame member 20 of theupper frame 14 to theupper frame member 18 of thelower frame 14 by means of bolts in a multiple number of locations. - Each of the
transformer structures 12 consists of a single-phase transformer Tr used for power distribution, a current transformer CT and an instrument transformer PT; and these respective transformers are connected to each other. More specifically, as shown in Figure 2, the single-phase transformer Tr is molded by amolding material 26, which is an insulating material, so as to obtain a moldedtransformer 23, and the current transformer CT and the instrument transformer PT are connected to the primary side of the single-phase transformer Tr which is inside the moldedtransformer 23. Furthermore, the moldedtransformer 23, current transformer CT and instrument transformer PT are all molded into an integral unit by amolding material 28, which consists of an insulating material such as a synthetic resin, synthetic rubber, etc., so that no high-voltage parts are exposed to the outside. As a result, thetransformer structures 12 which are molded by themolding material 28 are extremely safe structures, since there is absolutely no danger of fire due to the leakage of oil which is caused by transformers falling over as in conventional oil-containing transformers. Meanwhile, themolding materials - The molded
transformers 23 are installed inside thecorresponding frames 14 so that as shown in Figure 3 the central axes P of thewindings 30 of the transformer Tr are oriented horizontally. As a result, when thetransformer structures transformers - An ammeter A which is connected to the current transformer CT and a voltmeter V which is connected to the instrument transformer PT are disposed outside the
molding material 28. These ammeter A and voltmeter V are digital instruments which can perform measurements using a small current. The heat dissipating effect can be improved by forming through-holes in themolding material 28 in positions corresponding to the current transformer CT and instrument transformer PT. - The single-phase transformer Tr in the
molded transformer 23 of theupper transformer structure 12 and the single-phase transformer Tr in themolded transformer 23 of thelower transformer structure 12 are as shown in Figure 4 connected by V-V wiring; and three-phase AC transformation is performed by U, V, W-u, v, w, and a single-phase alternating current is extracted from o. In this embodiment, the wiring is different-capacity V-V wiring wherein, for example, a 200 KVA single-phase transformer Tr is installed on the upper side and a 300 KVA single-phase transformer Tr is installed on the lower side. - In the
transformer structure 12 on the upper side, as shown in Figure 2, a relay VCB is connected to the current transformer CT and to the instrument transformer PT which are connected to the primary side of the single-phase transformer Tr in themolded transformer 23. In this embodiment, the relay VCB is separated from thetransformer structure 12; however, it would be possible to mold the relay VCB integrally with thetransformer structure 12. As seen from the circuit diagram shown in Figure 5, this embodiment of thetransformer apparatus 16 is extremely simple and is able to withstand the load applied to the secondary side of the transformers so that burning damage to the transformers Tr can be prevented. Thereference numeral 32 in Figure 1 indicates blowers such as silocco fans, etc., which are installed in thecubicle 10. In this case, a cooling effect can be obtained by using theblowers 32 so as to introduce outside air into thecubicle 10. An air exhaust port (not shown) is formed in the side of thecubicle 10. In addition, it would also be possible to install theblowers 32 on theframes 14 which contain thetransformer structures 12 so that air is blown directly onto thetransformer structures 12 bysuch blowers 32. Furthermore, it would also be possible to increase the cooling efficiency by installing pairs ofblowers 32 on opposite sides of each of the transformer structures 12 (left and right, top and bottom, and front and back) so that one of each pair ofblowers 32 blows air onto the correspondingtransformer structure 12, while theother blower 32 of such a pair sucks air from thetransformer structure 12. - In the transformer equipment as described above, each
individual transformer structure 12 is constructed by using themolding material 28 so as to mold the moldedtransformer 23, current transformer CT and instrument transformer PT into an integral unit. As a result, there is absolutely no danger of fire due to overturned transformer structures. Accordingly, a plurality ofsuch transformer structures 12 can be stacked in the vertical direction, and the installation area occupied by the transformers inside thecubicle 10 can be reduced. Thecubicle 10 can be installed either outdoors or indoors, and the space in the installation location can be effectively utilized as a result of the reduction in the installation area. Furthermore, since three-phase/single-phase transformation can be handled using two single-phase transformers, the electrical wiring system can be supplied as a system for asingle transformer structure 12. Moreover, by installing the transformer structures in a stacked fashion, the lines of magnetic force generated by the moldedtransformers - Since a plurality of
transformer structures frames transformer apparatus 16 in which, for example, a 200 KVA transformer Tr is installed above and a 300 KVA transformer Tr is installed below can be quickly and simply converted into atransformer apparatus 16 in which, for example, a 300 KVA transformer Tr is installed above and a 500 KVA transformer Tr is installed below. Thus, working time can be shortened and costs can be reduced. Furthermore, since the current transformers CT and instrument transformers PT are also molded, it is possible to increase the useful life of these transformers. As a result, there is almost no need for maintenance or inspection; and the working characteristics of the system do not suffer despite the fact that the transformer structures can be stacked in the vertical direction. Accordingly, there is virtually no need for replacement parts, etc., and the running costs can be reduced. Furthermore, since no high-voltage parts are exposed inside the cubicle, workers can work safely inside thecubicle 10 during cleaning, maintenance or inspection of the respective components of thetransformer apparatus 16. Moreover, installation of thetransformer structures transformer structures 12 that contain single-phase transformers Tr of different capacities. Furthermore, since the transformers Tr, current transformers CT and instrument transformers PT are enclosed, the internal space available is effectively utilized. In addition, since all high-voltage parts are molded in themolding material 28, it can be possible to install only thetransformer structures 12, omitting thecubicle 10. - In the embodiments, two transformer structures which are equipped with single-phase transformers are stacked; however, as shown in Figure 6, it would be possible to stack, for example, three
transformer structures 12 that contain single-phase transformers. In addition, it would also be possible to stack four or more transformer structures. Moreover, it would also be possible to stack transformer structures equipped with three-phase transformers or to stack a combination of transformer structures equipped with single-phase transformers and transformer structures equipped with three-phase transformers. In addition, it would also be possible to integrally mold AVR's (automatic voltage regulators), LRD's, WW's, etc. inside the transformer structures.
Claims (4)
- A transformer structure characterized in that:
transformers (Tr) for power distribution are molded by an insulating material (26) such as a synthetic resin, synthetic rubber, etc.,
transformers (23) thus molded are positioned and fastened in place inside frames (14) so that central axes (P) of windings (30) of said molded transformers (Tr) are placed horizontally, and
a plurality of said frames (14) that contain molded transformers (23) are stacked in a vertical direction with said transformers (Tr) connected to each other by wires. - A transformer structure characterized in that:
single-phase transformers (Tr) used for power distribution are molded by an insulating material (26) such as a synthetic resin, synthetic rubber, etc.,
transformers (23) thus molded are positioned and fastened in place inside frames (14) so that central axes (P) of windings (30) of said molded transformers (Tr) are placed horizontally, and
a plurality of said frames (14) that contain said molded transformers (23) are stacked in a vertical direction with said single-phase transformers (Tr) connected to each other by V-V wiring. - A transformer equipment characterized in that:
molded transformers (23), which are obtained by molding power direction transformers (Tr) via an insulating material (26) such as a synthetic resin, synthetic rubber, etc. , and current and instrument transformers (CT, PT), which are connected to said transformers (Tr), are molded integrally by an insulating material (28) such as a synthetic resin, synthetic rubber, etc. so as to form transformer structures (12),
a plurality of said frames (14) are stacked in a vertical direction and said transformers (Tr) of said transformer structures (12) installed inside said frames (14) are connected to each other by means of wires, thus obtaining a transformer apparatus (16) which is installed inside a cubicle (10). - A transformer equipment according to Claim 3, wherein a relays (VCB) is connected to said transformers (Tr) in said transformer structures (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6295848A JPH08138953A (en) | 1994-11-04 | 1994-11-04 | Transformer structure and transformer system |
JP295848/94 | 1994-11-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0710965A2 true EP0710965A2 (en) | 1996-05-08 |
EP0710965A3 EP0710965A3 (en) | 1996-06-12 |
Family
ID=17825978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95307848A Withdrawn EP0710965A2 (en) | 1994-11-04 | 1995-11-02 | Transformer structure and equipment therefor |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0710965A2 (en) |
JP (1) | JPH08138953A (en) |
KR (1) | KR960019352A (en) |
CN (1) | CN1128395A (en) |
TW (1) | TW255072B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014039031A (en) * | 2012-08-10 | 2014-02-27 | Sts Spezialwagen-Trnaformatoren Stockach Gmbh & Co Kg | Middle frequency transformer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6198374B1 (en) * | 1999-04-01 | 2001-03-06 | Midcom, Inc. | Multi-layer transformer apparatus and method |
CN111180181B (en) * | 2019-12-20 | 2021-05-11 | 中国航天时代电子有限公司 | 1553B bus isolation transformer with double-stack structure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH295423A (en) * | 1951-11-20 | 1953-12-31 | Oerlikon Maschf | Instrument transformer cascade. |
DE1488280B2 (en) * | 1963-04-10 | 1970-06-11 | Raupach, Dr.-Ing. E.h. Friedrich, 8600 Bamberg | Transformer arrangement made up of three individual transformers with an insulating jacket |
US3761853A (en) * | 1972-11-13 | 1973-09-25 | Hipotronics | Mechanically variable modular high reactivity power inductor for high a. c. voltage resonant testing of capacitive loads |
JPS63292612A (en) * | 1987-05-26 | 1988-11-29 | Tokyo Electric Power Co Inc:The | Voltage transformer-current transformer for instrument and their exchange |
JPH06292308A (en) * | 1993-04-05 | 1994-10-18 | Makoto Yamamoto | Transformer facilities |
-
1994
- 1994-11-04 JP JP6295848A patent/JPH08138953A/en active Pending
- 1994-12-22 TW TW083112228A patent/TW255072B/en not_active IP Right Cessation
-
1995
- 1995-11-02 EP EP95307848A patent/EP0710965A2/en not_active Withdrawn
- 1995-11-03 KR KR1019950039538A patent/KR960019352A/en not_active Application Discontinuation
- 1995-11-03 CN CN95118747A patent/CN1128395A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014039031A (en) * | 2012-08-10 | 2014-02-27 | Sts Spezialwagen-Trnaformatoren Stockach Gmbh & Co Kg | Middle frequency transformer |
US9437356B2 (en) | 2012-08-10 | 2016-09-06 | Sts Spezial-Transformatoren-Stockach Gmbh & Co. Kg | Medium frequency transformer |
Also Published As
Publication number | Publication date |
---|---|
KR960019352A (en) | 1996-06-17 |
CN1128395A (en) | 1996-08-07 |
EP0710965A3 (en) | 1996-06-12 |
JPH08138953A (en) | 1996-05-31 |
TW255072B (en) | 1995-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8878558B2 (en) | Load testing machine | |
JP2858218B2 (en) | High-voltage power receiving equipment | |
US5216575A (en) | Power board | |
KR102215103B1 (en) | receiving electricity equipment with highvoltage | |
EP0710965A2 (en) | Transformer structure and equipment therefor | |
JPS644402B2 (en) | ||
JPH0564323A (en) | Dc substation | |
US5596467A (en) | Electrical energy-transforming equipment | |
EP0513828B1 (en) | Transformer apparatus | |
EP0724275A1 (en) | High-voltage transformer equipment | |
US3579044A (en) | Unit substation with transformer and control compartments | |
JP7036775B2 (en) | Centralized substation equipment | |
JPH07245221A (en) | Transformer structure and transformer facility | |
JP6576508B1 (en) | Centralized substation | |
JP2001095115A (en) | Cubicle type high-voltage receiving facility | |
CN213460673U (en) | Integrated form oil well block terminal | |
JPH10313512A (en) | Switchboard | |
JP7220270B2 (en) | Transformer equipment | |
CN209881115U (en) | High-voltage switch cabinet | |
JP6864423B2 (en) | Extra high voltage / transformer placement system | |
KR100904457B1 (en) | Distributing System forming The Service Space of Substation Room | |
JPH046184Y2 (en) | ||
SU729713A1 (en) | Shaft transformer substation | |
JPH0116357Y2 (en) | ||
CA1071706A (en) | Sealed dc power converting station |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB IT SE |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB IT SE |
|
17P | Request for examination filed |
Effective date: 19961206 |
|
17Q | First examination report despatched |
Effective date: 19970116 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19980516 |