JP2020161582A - Stationary induction apparatus - Google Patents

Abstract

To provide a compact stationary induction apparatus for improving cooling efficiency in a radiator in both forced air cooling operation and natural cooling operation by focusing on wind circulating between a radiator's heat sink and a radiator's heat sink.SOLUTION: The stationary induction apparatus has: a body having a winding and an iron core; a transformer tank 2 filled with an insulating cooling medium for insulating and cooling the body; and a radiator 3 connected to the tank and having a plurality of heat sinks 3a. Members for deflecting wind are provided between the heat sinks.SELECTED DRAWING: Figure 7

Description

The present invention relates to a static induction electric device in which a radiator having a plurality of heat radiating plates is installed.

For static induction electric appliances such as transformers and reactors, the main body composed of windings and iron cores is housed in a tank, and the inside of the tank is filled with an insulating cooling medium that has both insulation and cooling.

When operating a static induction electric device, heat is generated from the winding and the iron core, so that the temperature inside the tank rises.

The useful life of a static induction device is mainly determined by the deterioration of the insulation. Since the deterioration of the insulating material depends on the temperature of the insulating cooling medium, a predetermined standard defines a limit value for the temperature rise of the insulating cooling medium (the temperature rise inside the tank).

Therefore, a heat radiating means for releasing the heat generated inside the tank to the outside is installed, and the insulating cooling medium is circulated between the inside and the outside of the tank to suppress the temperature rise inside the tank.

As a background technology in this technical field, there is Japanese Patent Application Laid-Open No. 2017-180182 (Patent Document 1). This Patent Document 1 describes a blower device capable of obtaining good ventilation to the radiator when the fan is not operating and sufficiently blowing air from the fan to the radiator when the fan is operating (). See summary).

Further, Patent Document 1 is a blower that blows air to a radiator for cooling a coolant used in a transformer, and this blower includes a fan, a partition plate, bolts, brackets, and a stopper to provide a partition. When viewed from the direction of ventilation of the fan, there are at least two plates that sandwich the fan. When the fan is blown, the plate rotates around the bolt, and the bracket or stopper has the main surface of the partition plate that blows the air. It is stated that it is provided at a position where it stops along the direction (see summary).

JP-A-2017-180182

Patent Document 1 describes a blower having a rotary partition plate around the radiator.

However, although Patent Document 1 describes that a partition plate is installed around the radiator, it does not describe the wind that circulates between the heat radiating plate of the radiator and the heat radiating plate of the radiator.

Therefore, the present invention focuses on the wind flowing between the radiator plate and the radiator radiator, and improves the cooling efficiency of the radiator in both the forced air cooling operation and the natural cooling operation, and is compact. Provide a static induction electric device.

In order to solve the above problems, the static induction electric device of the present invention is connected to a content body having a winding and an iron core, a tank filled with an insulating cooling medium that also insulates and cools the content body, and a tank. It is characterized by having a radiator having a plurality of heat radiating plates, and having a member for deflecting wind between the plurality of heat radiating plates.

According to the present invention, attention is paid to the wind flowing between the radiator plate of the radiator and the radiator plate of the radiator, and the cooling efficiency of the radiator is improved in both the forced air cooling operation and the natural cooling operation, and the radiator is compact. Can provide a static induction electric device.

Issues, configurations, and effects other than those described above will be clarified by the explanation of the examples below.

It is a side view explaining the schematic structure of a transformer. It is a front view of the radiator installed in a transformer, and is the explanatory view explaining the distribution of the wind around the radiator at the time of forced air cooling operation. It is a top view of the radiator installed in the transformer, and is the explanatory view explaining the distribution of the wind around the radiator at the time of forced air cooling operation. It is a front view of the radiator installed in a transformer, and is the explanatory view explaining the distribution of the wind around the radiator at the time of a natural cooling operation. It is a top view of the radiator installed in the transformer, and is the explanatory view explaining the distribution of the wind around the radiator at the time of natural cooling operation. It is explanatory drawing explaining the schematic structure of the deflector which deflects a wind installed in the transformer in Example 1, and is the front view of the radiator which has a deflector. It is explanatory drawing explaining the schematic structure of the deflector which deflects a wind installed in the transformer in Example 1, and is the top view of the radiator which has a deflector. It is a top view of the radiator installed in the transformer in Example 1, and is the explanatory view explaining the distribution of the wind around the radiator at the time of the forced air cooling operation. It is a top view of the radiator installed in the transformer in Example 1, and is the explanatory view explaining the distribution of the wind around the radiator at the time of a natural cooling operation. It is explanatory drawing explaining the schematic structure of the deflector which deflects a wind installed in the transformer in Example 2, and is the top view of the radiator which has a deflector. It is a top view of the radiator installed in the transformer in Example 2, and is explanatory drawing explaining the distribution of the wind around the radiator at the time of forced air cooling operation. It is a top view of the radiator installed in the transformer in Example 2, and is the explanatory view explaining the distribution of the wind around the radiator at the time of a natural cooling operation. It is explanatory drawing explaining the schematic structure of the processing part which deflects a wind installed in the transformer in Example 3, and is the top view of the radiator which has a processing part.

Hereinafter, examples of the present invention will be described with reference to the drawings. The same or similar configurations may be designated by the same reference numerals, and if the descriptions are duplicated, the description may be omitted.

Here, as an example of a static induction electric device, a transformer is used, and the distribution of wind around the radiator installed in the transformer will be described.

FIG. 1 is a side view illustrating a schematic configuration of a transformer.

The transformer 1 includes a transformer tank 2 in which a main body (not shown) composed of a winding (not shown) and an iron core (not shown) is housed, and a radiator 3 having a plurality of heat radiating plates 3a. It has a bushing 4 that introduces a high voltage.

The radiator 3 is connected to the transformer tank 2 via a connection pipe 5 installed in the transformer tank 2. The inside of the transformer tank 2 is filled with an insulating cooling medium (not shown) that has both insulation and cooling. The insulating cooling medium circulates between the transformer tank 2 and the radiator 3 connected to the transformer tank 2, and in the radiator 3, the heat generated in the content main body (not shown) is released to the atmosphere. As the insulating cooling medium, for example, mineral-based insulating oil is used in the case of a liquid, and sulfur hexafluoride (SF ₆ ) is used in the case of a gas.

In particular, in the case of the large-capacity transformer 1, a cooling fan 6 is installed in order to promote heat exchange between the insulating cooling medium and the atmosphere.

FIG. 2 is a front view of a radiator installed in a transformer, and is an explanatory view for explaining the distribution of wind around the radiator during forced air cooling operation.

FIG. 3 is a top view of a radiator installed in a transformer, and is an explanatory view for explaining the distribution of wind around the radiator during forced air cooling operation.

In FIGS. 2 and 3, the distribution of wind around the radiator 3 during the forced air cooling operation in which the cooling fan 6 is operated is indicated by an arrow 7.

In FIGS. 2 and 3, due to the pressure loss in the heat radiating plate 3a installed in the radiator 3, the wind flows in the direction in which it is easy to flow, so that the wind from the cooling fan 6 flows out to the outside of the radiator 3.

FIG. 4 is a front view of the radiator installed in the transformer, and is an explanatory view for explaining the distribution of wind around the radiator during the natural cooling operation.

FIG. 5 is a top view of the radiator installed in the transformer, and is an explanatory view for explaining the distribution of wind around the radiator during the natural cooling operation.

In FIGS. 4 and 5, the distribution of wind around the radiator 3 during the natural cooling operation in which the cooling fan 6 is not operated (the cooling fan 6 is stopped) is indicated by an arrow 7.

In FIGS. 4 and 5, the temperature around the heat radiating plate 3a installed in the radiator 3 becomes higher than the temperature of the outside air due to the heat generated inside the transformer tank 2. Then, the density of the air around the heat radiating plate 3a becomes low, and the generated buoyancy causes an updraft to be generated around the heat radiating plate 3a.

That is, during the forced air cooling operation, it is necessary to suppress a decrease in the air volume in the upper part of the radiator 3 where the temperature difference from the atmosphere becomes large, and suppress a decrease in the cooling efficiency in the upper part of the radiator 3. Then, in order to efficiently cool the radiator 3 during the natural cooling operation, it is necessary to efficiently take in the atmosphere having a low temperature.

The transformer 1 described in this embodiment has a member that deflects the wind on the heat radiating plate 3a installed in the radiator 3.

FIG. 6 is an explanatory view illustrating a schematic configuration of a deflector that deflects the wind installed in the transformer according to the first embodiment, and is a front view of a radiator having the deflector.

FIG. 7 is an explanatory view illustrating a schematic configuration of a deflector that deflects the wind installed in the transformer according to the first embodiment, and is a top view of a radiator having the deflector.

The transformer 1 described in this embodiment is the transformer 1 shown in FIG.

That is, the transformer 1 is a radiator having a transformer tank 2 in which a main body (not shown) composed of a winding (not shown) and an iron core (not shown) is housed, and a plurality of heat radiating plates 3a. 3. It has a bushing 4 for introducing a high voltage (see FIG. 1).

Then, the radiator 3 is connected to the transformer tank 2 via the connection pipe 5 installed in the transformer tank 2. The inside of the transformer tank 2 is filled with an insulating cooling medium (not shown) that has both insulation and cooling. The insulating cooling medium circulates between the transformer tank 2 and the radiator 3 connected to the transformer tank 2, and in the radiator 3, the heat generated in the content main body (not shown) is released to the atmosphere. Further, in order to promote heat exchange between the insulating cooling medium and the atmosphere, a cooling fan 6 is installed under the radiator 3 (see FIG. 1).

The transformer 1 described in this embodiment has a deflector 11 which is a member for deflecting wind on the heat radiating plate 3a.

In this embodiment, the deflector 11 is installed between the plurality of heat radiating plates 3a on the entire surface of the radiator 3 in the height direction from the lower part to the upper part. That is, in this embodiment, in order to pay attention to the wind flowing between the heat radiating plate 3a and the heat radiating plate 3a, it is installed between the heat radiating plate 3a and the heat radiating plate 3a (see FIG. 6).

For example, when the number of heat radiating plates 3a is 5, as in this embodiment, from the left side in FIG. The deflector 11 is installed on the left side of the sheet. This is the wind that circulates in the gap between the 1st and 2nd sheets, between the 2nd and 3rd sheets, between the 3rd and 4th sheets, and between the 4th and 5th sheets. This is to pay attention.

Further, in this embodiment, the deflector 11 is installed on the heat radiating plate 3a installed at the position farthest from the transformer tank 2 (see FIG. 7). The heat radiating plate 3a shown in FIG. 7 is the second, third, and fourth heat radiating plates 3a shown in FIG.

The deflector 11 is installed so as to form a gap 8 between the deflector 11 and the deflector 11.

Further, the deflector 11 is installed so as to be inclined toward the transformer tank 2 with respect to the direction in which the heat radiating plate 3a is installed. That is, the deflector 11 is installed inside the radiator 3 (on the transformer tank 2 side) with a predetermined inclination angle (see FIG. 7). The inclination angle (the angle formed by the deflector 11 and the direction perpendicular to the direction in which the heat radiating plate 3a is installed) is preferably 40 to 50 degrees.

Since the large-capacity transformer 1 may be installed in an environment exposed to direct sunlight or wind and rain, the material of the deflector 11 is preferably a material having excellent deterioration characteristics against heat, ultraviolet rays, and the like. Further, in order to promote heat exchange in the radiator 3 (heat radiating plate 3a), the material of the deflector 11 is preferably a material having a good heat transfer coefficient. For these reasons, the material of the deflector 11 is preferably a metal material such as iron, steel, or aluminum.

Further, since it is assumed that both the heat radiating plate 3a and the deflector 11 are formed of a metal material, it is preferable to connect the deflector 11 to the heat radiating plate 3a by welding.

FIG. 8 is a top view of the radiator installed in the transformer in the first embodiment, and is an explanatory view for explaining the distribution of wind around the radiator during forced air cooling operation.

As shown in FIG. 8, by installing the deflector 11, it is possible to prevent the wind from the cooling fan 6 from flowing out to the outside of the radiator 3 during the forced air cooling operation. The arrow 7 in the figure indicates the distribution of wind.

As described above, during the forced air cooling operation, it is possible to suppress a decrease in the air volume in the upper part of the radiator 3 where the temperature difference from the atmosphere becomes large, and suppress a decrease in the cooling efficiency in the upper part of the radiator 3.

FIG. 9 is a top view of the radiator installed in the transformer in the first embodiment, and is an explanatory view for explaining the distribution of wind around the radiator during the natural cooling operation.

During the natural cooling operation, the temperature around the heat radiating plate 3a installed in the radiator 3 becomes higher than the temperature of the outside air due to the heat generated inside the transformer tank 2, and the temperature around the heat radiating plate 3a The density of air becomes low, and the generated buoyancy causes an updraft to be generated around the heat radiating plate 3a.

As shown in FIG. 9, by installing the deflector 11, this updraft can be efficiently used during the natural cooling operation, the low temperature atmosphere can be efficiently taken in, and the radiator 3 can be efficiently cooled. can do. The arrow 7 in the figure indicates the distribution of wind.

By installing the deflector 11 in this way, the temperature difference between the air inside the radiator 3 and the atmosphere can be increased, and the chimney effect can be promoted. Then, a strong updraft is generated inside the radiator 3, and the wind flows quickly, so that the cooling efficiency in the radiator 3 is improved.

Further, the deflector 11 can disturb the flow of wind when taking in the atmosphere, and can improve the heat transfer coefficient around the heat radiating plate 3a.

Then, in this embodiment, by forming the gap 8 between the deflector 11 and the deflector 11, the atmosphere around the radiator 3 can be efficiently taken in. By forming the gap 8 between the deflector 11 and the deflector 11 in this way, it is possible to take in the atmosphere having a large temperature difference from the surface of the heat radiating plate 3a into the heat radiating plate 3a, so that the heat in the radiator 3 can be taken in. The exchange efficiency can be improved.

As described above, according to the present embodiment, the deflector 11 promotes heat exchange in the radiator 3 in order to prevent the air from the cooling fan 6 from flowing out to the outside of the radiator 3 during the forced air cooling operation. During the natural cooling operation, the deflector 11 can promote the chimney effect in the radiator 3 and increase the air volume in the radiator 3, and efficiently take in the air having a low temperature outside the radiator 3 into the radiator 3. Can be done.

In this embodiment, the heat exchange efficiency of the radiator 3 can be improved by installing the deflector 11 on the heat radiating plate 3a. In this way, in both the forced air cooling operation in which the cooling fan 6 installed in the lower part of the radiator 3 is operated and the natural cooling operation in which the cooling fan 6 installed in the lower part of the radiator 3 is not operated. , The cooling efficiency of the radiator 3 can be improved.

Further, by forming the gap 8, the air can be efficiently taken into the inside of the radiator 3, so that the cooling efficiency of the radiator 3 can be improved even during the natural cooling operation.

According to this embodiment, if the temperature of the insulating cooling medium is the same, the cooling area of the radiator 3 can be reduced, so that the amount of material used for the heat dissipation plate 3a and the amount of insulating cooling medium used can be reduced. Can be done. Further, by improving the cooling performance, the current density of the winding can be improved, the amount of winding and insulation used can be reduced, and the radiator 3 or the transformer tank 2 can be made smaller and lighter. Can be planned.

Then, according to this embodiment, it is possible to improve the heat exchange efficiency of the radiator 3 in both operating states without installing a partition plate or the like whose angle changes between the forced cooling operation and the natural cooling operation. it can. It is possible to improve the cooling efficiency of the radiator 3 without increasing the maintenance and labor of maintenance.

Further, since a partition plate or the like is not installed around the radiator 3, the cooling efficiency of the radiator 3 can be improved without increasing the size of the radiator 3.

FIG. 10 is an explanatory view illustrating a schematic configuration of a deflector that deflects the wind installed in the transformer in the second embodiment, and is a top view of a radiator having the deflector.

The transformer 1 described in this embodiment has a deflector 12 that deflects the wind on the heat radiating plate 3a installed in the radiator 3. In this example, the shape of the deflector 12 is different from that in Example 1.

The deflector 12 described in this embodiment has a nozzle shape.

That is, the deflector 12 is inclined toward the transformer tank 2 side with respect to the direction in which the heat radiating plate 3a is installed, and the first portion to be installed and the direction in which the heat radiating plate 3a is installed. It has a second portion that is installed vertically (including being installed at an angle toward the transformer tank 2 with respect to the direction in which the heat radiation plate 3a is installed).

The inclination angle A of the first portion (the angle formed by the direction perpendicular to the direction in which the heat dissipation plate 3a is installed and the first portion) and the inclination angle B of the second portion (radiation plate 3a). The relationship between the direction perpendicular to the direction in which is installed and the angle formed by the second portion) is A> B.

That is, the deflector 12 has a predetermined inclination angle A inside the radiator 3 (transformer tank 2 side), and is predetermined between the first portion to be installed and the inside of the radiator 3 (transformer tank 2 side). It has a tilt angle B of, and has a second portion to be installed. The inclination angle A is preferably 40 to 50 degrees, and the inclination angle B is preferably 0 degrees (direction perpendicular to the direction in which the heat radiating plate 3a is installed) to 30 degrees. In this embodiment, the inclination angle A is 45 degrees and the inclination angle B is 0 degrees.

As a result, it is possible to suppress the wind from the cooling fan 6 from flowing out to the outside of the radiator 3 during the forced air cooling operation, and to promote the chimney effect of the radiator 3 during the natural cooling operation.

In particular, since the deflector 12 has the second portion, the air from the cooling fan 6 is further suppressed from flowing out to the outside of the radiator 3 during the forced air cooling operation, and the radiator 3 is used during the natural cooling operation. The chimney effect can be further promoted.

Further, the deflector 12 is installed so as to form a gap 8 between the deflector 12 and the deflector 12.

FIG. 11 is a top view of the radiator installed in the transformer according to the second embodiment, and is an explanatory view for explaining the distribution of wind around the radiator during forced air cooling operation. The arrow 7 in the figure indicates the distribution of wind.

In this embodiment, since the deflector 12 has a nozzle shape, the wind from the cooling fan 6 is further suppressed from flowing out from the gap 8 to the outside of the radiator 3 (the wind is blown from the inside of the radiator 3 to the outside). Hard to leak).

In this way, since it is possible to suppress the wind from the cooling fan 6 from flowing out from the gap 8 to the outside of the radiator 3, the upper part of the radiator 3 where the temperature difference from the atmosphere becomes large during the forced air cooling operation. The air volume can be increased, and the cooling efficiency in the upper part of the radiator 3 can be improved.

FIG. 12 is a top view of the radiator installed in the transformer according to the second embodiment, and is an explanatory view for explaining the distribution of wind around the radiator during the natural cooling operation. The arrow 7 in the figure indicates the distribution of wind.

In this embodiment, since the deflector 12 has a nozzle shape, the updraft generated inside the radiator 3 can be efficiently used during the natural cooling operation, and the low temperature atmosphere can be efficiently taken in from the gap 8. This makes it possible to efficiently cool the radiator 3.

By forming the deflector 12 in the shape of a nozzle in this way, the temperature difference between the air inside the radiator 3 and the atmosphere can be increased, and a strong updraft is generated inside the radiator 3 to generate wind. It can be made to flow quickly, and the cooling efficiency in the radiator 3 is improved.

Further, by forming the deflector 12 in the shape of a nozzle, it is possible to disturb the flow of wind when taking in the atmosphere, improve the heat transfer coefficient around the heat radiating plate 3a, and improve the cooling efficiency of the radiator 3. Can be improved.

According to this embodiment, the heat exchange efficiency in the radiator 3 can be further improved. In this way, the cooling efficiency of the radiator 3 can be further improved in both the forced air cooling operation and the natural cooling operation.

According to this embodiment, if the temperature of the insulating cooling medium is the same, the cooling area of the radiator 3 can be further reduced, so that the amount of material used for the heat dissipation plate 3a and the amount of insulating cooling medium used can be further reduced. can do. Further, by improving the cooling performance, the current density of the winding can be further improved, the amount of windings and insulation used can be further reduced, and the radiator 3 or the transformer tank 2 can be made smaller. It is possible to reduce the weight.

FIG. 13 is an explanatory view illustrating a schematic configuration of a processed portion for deflecting wind installed in the transformer in the third embodiment, and is a top view of a radiator having the processed portion.

The transformer 1 described in this embodiment has a processing portion 13 that deflects the wind on the heat radiating plate 3a installed in the radiator 3. That is, in this embodiment, the processed portions 13 are provided on both end surfaces of the heat radiating plates 3a (heat radiating plates 3a in the intermediate portion) of the second, third, and fourth radiators 3.

Further, the processed portion 13 is formed on all the heat radiating plates 3a from the heat radiating plate 3a installed at the position closest to the transformer tank 2 to the heat radiating plate 3a installed at the position farthest from the transformer tank 2. ..

As described above, in the first embodiment, the deflector 11 is installed on the heat radiating plate 3a, but in this embodiment, the processed portion 13 is formed on the heat radiating plate 3a. Further, in the first embodiment, the deflector 11 is installed on the heat radiating plate 3a installed at the position farthest from the transformer tank 2, but in the present embodiment, the processed portion 13 is located at the position closest to the transformer tank 2. It is formed from the heat radiating plate 3a to the heat radiating plate 3a at the position farthest from the transformer tank 2.

The processed portion 13 is processed by bending, for example, both end faces of the heat radiating plate 3a on the inside of the radiator 3 (on the transformer tank 2 side) with a predetermined inclination angle.

In this embodiment, by having the processed portion 13, the air from the cooling fan 6 is prevented from flowing out from the gap 8 to the outside of the radiator 3 during the forced air cooling operation. Since it is possible to suppress the wind from the cooling fan 6 from flowing out from the gap 8 to the outside of the radiator 3, the air volume in the upper part of the radiator 3 where the temperature difference from the atmosphere becomes large can be increased, and the radiator 3 can be increased. The cooling efficiency in the upper part of the can be improved.

Further, in the present embodiment, by having the processed portion 13, the updraft generated inside the radiator 3 can be efficiently used during the natural cooling operation, and the low temperature atmosphere can be efficiently used from the gap 8. It can be taken in and the radiator 3 can be cooled efficiently.

By forming the processed portion 13 in this way, the temperature difference between the air inside the radiator 3 and the atmosphere can be increased, a strong updraft is generated inside the radiator 3, and the wind flows quickly. The cooling efficiency in the radiator 3 is improved.

Further, the processed portion 13 is preferably formed so that the gap 8 is small. By reducing the gap 8, when the air is taken into the inside of the radiator 3, the wind can flow quickly inside the radiator 3, and the flow of the wind around the processing portion 12 can be disturbed. The heat transfer coefficient on the surface of the heat radiating plate 3a can be improved.

As a result, the cooling efficiency of the radiator 3 can be further improved in both the forced air cooling operation and the natural cooling operation.

According to this embodiment, if the temperature of the insulating cooling medium is the same, the cooling area of the radiator 3 can be further reduced, so that the amount of material used for the heat dissipation plate 3a and the amount of insulating cooling medium used can be further reduced. can do. Further, by improving the cooling performance, the current density of the winding can be further improved, the amount of windings and insulation used can be further reduced, and the radiator 3 or the transformer tank 2 can be made smaller. It is possible to reduce the weight.

The present invention is not limited to the above-described examples, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

1 ... Transformer, 2 ... Transformer tank, 3 ... Radiator, 3a ... Heat dissipation plate, 4 ... Bushing, 5 ... Connection piping, 6 ... Cooling fan, 7 ...・ ・ Wind distribution, 8 ・ ・ ・ gap, 11, 12 ・ ・ ・ deflector, 13 ・ ・ ・ processed part

Claims (6)

It has a content body having windings and iron cores, a tank filled with an insulating cooling medium that also insulates and cools the content body, and a radiator connected to the tank and having a plurality of heat radiating plates.
A static induction electric device characterized by having a member that deflects wind between the plurality of heat radiating plates. The static induction electric device according to claim 1, wherein the member is installed on a heat radiating plate at a position farthest from the tank. The static induction electric device according to claim 1, wherein the member is installed so as to form a gap between the member and the member. The static induction electric device according to claim 1, wherein the member is installed so as to be inclined toward the tank side with respect to the direction in which the heat radiating plate is installed. The member is installed so that the first portion is inclined toward the tank side with respect to the direction in which the heat radiation plate is installed, and the second portion is installed perpendicular to the direction in which the heat radiation plate is installed. The static induction electric device according to claim 1, wherein the portion of the static induction electric device is provided. It has a content body having windings and iron cores, a tank filled with an insulating cooling medium that also insulates and cools the content body, and a radiator connected to the tank and having a plurality of heat radiating plates.
A static induction electric device characterized in that a processed portion for deflecting wind is formed on the plurality of heat radiating plates.

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