JPH09162038A - Stationary induction electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact stationary induction apparatus easy to perform its inside wiring connection works. SOLUTION: This induction electric apparatus has a hermetically shelled enclosure 5 with a stored insulation medium, a principal-electric-apparatus main body 1 stored and dipped in the insulation medium, a plurality of electric- apparatus main bodies 2, 3 with smaller frames than the principal electric apparatus 1, an on-load tap switchover device 4 for switching over the application voltages to the principal electric apparatus 1 to each other and bushings 7 of the drawing-out terminals of the principal-electric-apparatus main body 1. In this case, the other small-framed electric-apparatus main bodies 2, 3 are provided in parallel with the principal-electric-apparatus main body 1, and the on-load tap switchover device 4 is provided coaxially with the main body 1 or just on its side, and further, the bushings 7 of the main body 1 are provided above the small-framed electric-apparatus main bodies 2, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a static induction device, and more particularly to a static induction device in which a plurality of induction electric devices such as a series induction electric device and an exciting induction electric device for low voltage and large current are arranged in one container. It is about electric appliances.

[0002]

2. Description of the Related Art An electric device such as a static induction device is usually formed by housing one electric device main body in one hermetically sealed container. For example, a static induction device having a series induction device or an exciting induction device is used. In the inductor, a plurality of electric device main bodies are housed in one sealed container.

In a device in which a plurality of electric device bodies are housed in a single sealed container as described above, generally, the arrangement angles of adjacent static inductors are set so that they are not affected by leakage of magnetic fields. It is being changed and a magnetic shield plate (shield) is placed between the stationary inductors.

Examples of the static induction device of this type include, for example, JP-A-48-1828 and JP-A-60-22812.

[0005]

In the static induction device thus formed, when the magnetic shield plate is interposed between the static inductors, the magnetic shield plate is provided between the respective static inductors. A space for mounting, a space for connecting the wires by avoiding this magnetic shield, and a working space are required, and a large sealed container is required.
In other words, there is a tendency to make the static induction device larger, and if the static induction device is arranged at a different angle, it seems to be space-friendly because there is no magnetic shield plate. In many cases, a small-capacity electric appliance body is placed at right angles to the main body, so the width of the sealed container is determined by the side-by-side arrangement of the small-capacity electric appliance main body. The space with the container tends to be large, and again, there was the dislike of the static induction device becoming larger.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a static induction device of this type in which the static induction device does not become large in size, that is, compact, and the internal wiring connection work is easy. To provide.

[0007]

That is, the present invention provides a hermetically-sealed container in which an insulating medium is housed, a main electric device which is dipped and housed in the insulating medium in the hermetically-sealed container, and a main electric device. In a static induction machine equipped with a plurality of small electric device main body, a load tap changer for switching the voltage of the main electric device, and a bushing which is a lead-out terminal of the main electric device main body, While the other small body electric device main body is arranged in parallel with the main electric device main body, the load tap changer is arranged coaxially with the main electric device main body or directly beside the main electric device main body, and The bushing of the main electric device body is arranged above the small body electric device body to achieve the intended purpose.

Also, a hermetically sealed container containing an insulating medium,
In this sealed container, a main electric device that is immersed and housed in the insulating medium, a plurality of electric device bodies that are smaller in size than the main electric device, and a load for switching the voltage of the main electric device In a static induction electric device comprising a tap changer, a bushing that is a lead-out terminal of the main electric device body, and a radiator that is arranged outside the hermetically sealed container and discharges heat of the insulating medium to the outside, Another small body electric device main body is arranged in parallel with the main electric device main body, the radiator is arranged on the side of the nearest container wall where the main electric device main body is located, and the load tap changer. Is arranged coaxially with or directly next to the main electric device main body, and the bushing of the main electric device main body is arranged above the small body electric device main body. It is intended.

Further, a hermetically sealed container containing an insulating medium,
In this sealed container, a main electric device that is immersed and housed in the insulating medium, a plurality of electric device bodies that are smaller in size than the main electric device, and a load for switching the voltage of the main electric device In a static induction machine equipped with a tap changer, a bushing that is a lead-out terminal of the main electric device body, and a test bushing that is a lead-out terminal for a performance test of the electric device, in parallel with the main electric device body. Other small body electric device body is arranged, the radiator is arranged on the side of the container wall closest to the main electric device body, and the load tap changer is the main electric device body. It is arranged coaxially with or adjacent to the main body of the main electric equipment, and the test bushing is arranged outside the side wall on the opposite side where the radiator is arranged. That.

That is, in the static induction device thus formed, another small body electric device main body is arranged in parallel with the main electric device main body, and the load tap changer is the main electric device main body. Since it is arranged coaxially with the main body of the equipment or right next to the main body of the main electrical equipment, it is possible to secure a space for easy wiring of the tap lead wire from the excitation inductor and its work. Further, since the installation position of the load tap changer is coaxial with or directly next to the main electric device body, it is not necessary to increase the length of the sealed container, that is, the container is not enlarged. Of.

In addition, the main electric equipment main body corresponding to the low voltage large current equipped with the tap changer under load, the heat generation of the static inductor composed of a series and a plurality of main bodies of different sizes of the excitation inductor Since the main body of the main electric equipment is located on the radiator side, the cooling efficiency is improved, and the series and exciting inductors are arranged in parallel with the main body of the main electric equipment. By arranging the bushing of the lead-out terminal of the main electric equipment main body above the inductor, effectively use the cover of the sealed container and the space of these series and excitation inductor main bodies as internal connection work and internal inspection space. At the same time, it can be used as an installation space for a bushing type current transformer attached to the drawer bushing.

Further, each of the plurality of main bodies is provided with an electric performance test pocket, which is pulled out from the side wall of the sealed container of the series and excitation inductor, which is opposed to the radiator, and is attached to the test pocket. It is possible to facilitate the internal connection work by using the space for wiring the lead wire to.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1 is a plan view of the stationary induction device, FIG. 2 is a side view thereof, and FIG. 3 is a connection diagram thereof. Reference numeral 5 in the drawing denotes a hermetically sealed container in which a main electric device body 1, a series inductor 2 and an exciting inductor 3 are arranged. In addition, 6 is a radiator and 7 is a bushing.

The series inductor 2 and the exciting inductor 3 are coaxially installed in parallel with the main electric device body 1, and the load tap changer 4 is arranged right next to the main electric device body 1. . These are housed inside the sealed container 5. The radiator 6 is the main electric equipment body 1 that produces the most heat.
It is placed on the side to improve the cooling performance.

The lead-out terminal bushing 7 of the main electric equipment body 1 is arranged above the series inductor 2 and the excitation inductor 3, and the three electric performance test pockets 8 housed therein are opposed to the radiator 6. Placed on the side of the sealed container 5,
Bushings 9 for testing the lead terminals of these main bodies are attached. Lead wire 1 to this test bushing 9
0 is wired using the space above the series inductor 2 and the excitation inductor 3.

Further, the lead terminal bushing 7 of the main electric equipment body 1 is equipped with a bushing type current transformer 11. The load tap changer 4 is arranged right next to the main electric device body 1 and close to the excitation inductor 3 to facilitate the wiring of the tap lead wires.

As described above, in the static induction device thus formed, the size of the main electric device main body corresponding to the low voltage large current equipped with the load tap changer, the series and the size of the excitation inductor are set. The main electric equipment body, which has the largest heat generation of the static inductor composed of several different main bodies, is placed on the radiator side to improve cooling efficiency, and in parallel with this main electric equipment body, series and excitation Since the inductors are arranged and the upper space of these series and excitation inductors can be effectively utilized, it is effective in facilitating the internal connection work and the proper layout of the test pockets, and the bushing type modification attached to the bushing. This has the effect of facilitating the securing of a space for mounting the sink, and is effective in reducing the height of the stationary induction device.

[0018]

As described above, according to the present invention, it is possible to obtain a static induction electric machine of this type in which the internal connection work is easy, without making the static induction device large in size, that is, compact.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a static induction device of the present invention.

FIG. 2 is a side view showing an embodiment of the static induction device of the present invention.

FIG. 3 is a diagram showing the internal connection of the stationary induction device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main electric equipment main body, 2 ... Series inductor, 3 ... Excitation inductor, 4 ... Load tap changer, 5 ... Sealed container, 6 ... Radiator, 7 ... Bushing (for main electric equipment main body), 8 ... Test pocket, 9 ... Test bushing, 10 ... Test lead wire, 11 ... Bushing type current transformer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumiaki Abe, Inventor 1-1-1 Kokubuncho, Hitachi City, Ibaraki Prefecture Kokubun Plant, Hitachi, Ltd. (72) Inventor Minoru Iwata 4-1-1, Higashi-Onuma Town, Hitachi City, Ibaraki Prefecture No. 3 within the stock company ICC

Claims (5)

[Claims] 1. A hermetically sealed container in which an insulating medium is housed, a main electric device immersed and housed in the insulating medium in the hermetically sealed container, and a plurality of electric devices smaller in size than the main electric device. In a static induction machine comprising a main body, a load tap changer for switching the voltage of the main electric device, and a bushing which is a lead-out terminal of the main electric device main body, in parallel with the main electric device main body. While the other small body electric device body is arranged, the load tap changer is arranged coaxially with the main electric device body or beside the main electric device body, and the bushing of the main electric device body is A static induction electric device, which is arranged on an upper part of the small body electric device body. 2. A hermetically-sealed container containing an insulating medium, a main electric device immersed and housed in the insulating medium in the hermetically-sealed container, and a plurality of electric devices smaller in size than the main electric device. A main body, a load tap changer for switching the voltage of the main electric device, a bushing that is a lead-out terminal of the main electric device main body, and is arranged outside the hermetically sealed container, and heat of the insulating medium is transferred to the outside. In a static induction machine provided with a heat radiator for discharging, in addition to the main body of the main electric device, another main body of the small electric device is arranged in parallel with the main body of the main electric device. Of the main electric device main body, and the load tap changer is coaxial with the main electric device main body or beside the main electric device main body, and the bushing of the main electric device main body is smaller than the main electric device main body. Stationary induction apparatus, characterized in that disposed in the upper portion of case electric apparatus unit. 3. A hermetically-sealed container containing an insulating medium, a main electric device immersed and housed in the insulating medium in the hermetically-sealed container, and a plurality of electric devices smaller in size than the main electric device. A main body, a load tap changer for switching the voltage of the main electric device, a bushing that is a lead terminal of the main electric device body, and a test bushing that is a lead terminal for a performance test of the electric device. In the static induction machine, the other main body of electric equipment is arranged in parallel with the main body of main electric equipment, and the radiator is arranged on the side of the nearest container wall where the main body of main electric equipment is located. And the load tap changer is arranged coaxially with or directly next to the main electric equipment body, and the test bushing is arranged opposite to the radiator. Stationary induction apparatus, characterized in that it is arranged on the side wall outside the side. 4. The static induction machine according to claim 3, wherein the lead wire of the test bushing is drawn out through an opening provided in a side wall of the hermetically sealed container facing the radiator. 5. The static induction machine according to claim 1, 2, 3 or 4, wherein the main electric machine body is a main induction machine and the small body electric machine is a series induction machine and an exciting induction machine.