JPH05300614A - Receiving apparatus - Google Patents

Abstract

PURPOSE:To reduce the size of a whole apparatus and make the apparatus easy to carry into a building, etc. CONSTITUTION:The left side plate 23 and the front side plate of a cubicle 21 are tightly fixed to the base 25a of a first molded transformer 25 with bolts. The right side plate 24 and the rear side plate 27 of the cubicle 21 are tightly fixed to the base 26a of a second molded transformer 26 with bolts. Necessary apparatuses such as a phase leading capacitor, a power supply instrument transformer and current transformers 39 and 40 are provided and fixed in the cubicle 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving device having a molded transformer and required equipment such as a transformer for a meter and a circuit breaker.

[0002]

2. Description of the Related Art Conventionally, molded transformers for receiving and distributing power have been widely used for indoor use in buildings and the like because of their excellent disaster prevention and insulating properties. In this case, the molded transformer is generally a transformer for instruments,
It is used as a power receiving device by being housed together with a current transformer for an instrument and a circuit breaker.

FIG. 5 schematically shows a circuit configuration up to the primary terminal of a molded transformer in this type of power receiving device. As shown in the figure, by the primary terminal of the mold transformer 1, a zero-phase current transformer 2, a transformer 3 for power supply and demand meters, a disconnector 4, a current limiting fuse 5, a circuit breaker 6 and a current transformer 7. The necessary equipment such as the above is provided to monitor electric power, etc., and prevent a ripple accident due to an electric accident. Furthermore, a circuit breaker 8 for wiring is provided on the secondary side of the molded transformer 1.
A current transformer 9 and the like are provided.

There are various electrical connection relations of the required equipment such as connecting the zero-phase current transformer 2 after the disconnector 4.

In such a power receiving device, the individually manufactured power receiving / distributing mold transformer 1, zero-phase current transformer 2, power supply / demand instrument transformer 3 and disconnector 4 are connected to a power receiving / distributing board such as a cubicle. They are arranged in the panel while ensuring their insulation distances, and are wired with insulation cables and bus bars, and operation parts and instruments are attached to the front of the panel so that operation and monitoring can be performed on the front of the panel. ..

6 to 8 schematically show an example of a power receiving device using two mold transformers. Figure 6
Shows the power receiving device with the front plate of the box 11 removed, and FIG. 7 shows the power receiving device with the left side plate of the box 11 removed when viewed from the X direction in FIG. FIG. 8 shows the power receiving device of FIG. 6 with the right side plate of the box 11 removed, as viewed from the direction of the arrow Y in FIG.

In this power receiving device, the bottom plate base 12 of the box body 11 is fixed to the indoor floor surface and is housed in the box body 11 so that the first mold transformer 13 and the second mold transformer 14 are provided. Is installed and fixed, and the circuit breaker 15,
The transformer 16 for meters for electric power supply and demand, meters 17 and the like are arranged and fixed.

[0008]

Since such a power receiving device is installed inside a building such as a high-rise building, a condominium or a hospital (a power receiving and transforming room), it is required to be downsized. For this reason, each device used in this power receiving device has been miniaturized, but the overall size becomes large because it is necessary to secure an insulating size from other devices. In particular, since heavy objects such as mold transformers 13 and 14 are housed in the box body 11, the box body 11 itself must be strengthened, resulting in an expensive and very heavy metal box body. ..

[0009] As described above, since the whole is large and the weight is considerably heavy, it is extremely troublesome to carry the building into the room. Especially, the entrance of the residential building and the size of the elevator are
Since the building is relatively small, each device of the power receiving device has to be carried in at the time of building the building, and the schedule adjustment for installation becomes complicated.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a power receiving device which can be downsized as a whole and can be easily carried into a building or the like. is there.

[0011]

A power receiving device of the present invention is a power receiving device that includes a mold transformer and required devices such as a current transformer and a circuit breaker. The characteristic feature is that the left and right side plates and the front and rear side plates of the covering box are connected and fixed, and the required equipment is arranged and fixed in the box.

[0012]

According to the power receiving device of the present invention, since the left and right side plates and the front and rear side plates of the box are connected and fixed to the heaviest molded transformer among the constituent devices, it is not necessary to reinforce the box itself and the conventional box body is used. It is possible to eliminate the need for the bottom plate base that was necessary for installing the mold transformer, and to fix the mold transformer itself to the installation floor surface. As a result, the size in the height direction can be reduced.

The left and right side plates and front and rear side plates of the box are
Since it is connected and fixed to the mold transformer, it is not necessary to form the box body into a box shape in advance, and therefore, it can be carried into the installation site in a disassembled state and the carrying in becomes easy.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, two mold transformers are used.

FIG. 1 is a front view of the entire box body 21 with the front side plate 22 (see FIG. 2) removed.
FIG. 2 shows the power receiving device in a state in which the left side plate 23 (see FIG. 1) of the box body 21 is removed when viewed from the arrow P direction in FIG. FIG. 3 shows the right side plate 24 of the box body 21 when viewed from the Q direction of FIG. 1 (see FIG. 1).
The power receiving device is shown with the power supply removed.

The first mold transformer 25 and the second mold transformer 26 have bases 25a and 2 respectively.
6a is directly attached to the installation floor. The left side plate 23 and the front side plate 22 of the box body 21 are connected and fixed to the base 25a of the first mold transformer 25 by bolting, and the right side plate of the box body 21 is connected to the base 26a of the second mold transformer 26. 24 and the rear side plate 27 are connected and fixed by bolting.

Further, a bottom opening box-shaped supporting member 28 is fixed to the base 25a of the first mold transformer 25 so as to cover the mold transformer 25 from above.
A circuit breaker 29 is arranged and fixed to the support 28.
Further, the rear side of the first molded transformer 25 is formed in a two-stage box shape by the vertical partition plate 30 and the horizontal plates 31, 32. The phase advancing capacitor 33 is in the lower stage and the power supply and demand in the upper stage. The measuring instrument transformers 34 are arranged and fixed. The vertical partition plate 30 is connected and fixed to the base 25a of the first mold transformer 25 and the support 28 by bolting.

At the front end of the base 26a of the second mold transformer 26, an operation panel 35, which constitutes a part of the box body 21 so as to be aligned with the front side plate 22, is attached. The operation panel 35 is provided with a display operation unit 36 and a wiring breaker 37.

Further, a support member 38 is attached to the clamp 26b of the second mold transformer 26,
The current transformers 39 and 40 are arranged and fixed via the support member 38. A ceiling plate 41 is provided on the upper surface of the box body 21.

Now, the installation portion of the first molded transformer 25 is referred to as a unit A, and the phase advancing capacitor 33 behind it is a unit A.
When the installation portion of the power supply and demand instrument transformer 34 is the unit B, the installation portion of the second mold transformer 26 is the unit C, and the operation panel 35 is the unit D, the positional relationship between them is planar. It looks as shown in FIG.

As described above, according to this embodiment, the left and right side plates 23 and 24 and the front and rear side plates 22 and 27 of the box body 21 are connected and fixed to the heaviest molded transformers 25 and 26 among the components, and the box body is formed. Since necessary components such as a phase advancing capacitor 33, a power supply and demand instrument transformer 34, current transformers 39 and 40, and a circuit breaker 29 are disposed and fixed in the box 21, the box 21
Since it is possible to reinforce itself with the mold transformers 25 and 26, the box body 21 does not need to have the conventional reinforcement, and the bottom plate base which is conventionally required for installing the box body can be eliminated. The mold transformers 25 and 26 themselves can be fixed to the installation floor surface, and as a result, the size in the height direction can be reduced. Furthermore, the connection leads and bus bars can be shortened, which contributes to cost reduction.

Since the left and right side plates 23 and 24 and the front and rear side plates 22 and 27 of the box body 21 are connected and fixed to the mold transformers 25 and 26, it is necessary to form the box body 21 into a box shape in advance. Therefore, it can be carried into the installation site in a disassembled state, and the carrying-in becomes extremely easy.

Further, it is also possible to separately manufacture each of the units A, B, C and D and connect them to each other at the installation site, thereby further improving manufacturability and carry-in property.

The present invention is not limited to the above embodiment,
Arrangement positions of required devices such as a current transformer and a circuit breaker may be appropriately changed, and the required devices to be mounted are not limited to the above embodiment.

[0025]

As is apparent from the above description, the present invention connects and fixes the left and right side plates and the front and rear side plates of the box body that covers the required equipment to the molded transformer, and arranges the required equipment in the box body. Since it is fixed, the overall size can be reduced, and an excellent effect that it can be easily carried into a building or the like is achieved.

[Brief description of drawings]

FIG. 1 is a front view with a front side plate removed according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a left side plate is removed, as seen from the direction of arrow P in FIG.

FIG. 3 is a side view with the right side plate removed, as viewed in the direction of the arrow Q in FIG.

FIG. 4 is a schematic plan view.

FIG. 5 is a diagram showing a conventional electrical configuration.

FIG. 6 is a front view with the front side plate removed.

FIG. 7 is a side view showing a state in which the left side plate is removed, as viewed in the direction of arrow X in FIG.

FIG. 8 is a side view showing a state in which a right side plate is removed, as viewed in the direction of the arrow Y in FIG.

[Explanation of symbols]

21 is a box, 22 is a front side plate, 23 is a left side plate, 24 is a right side plate, 25 is a first mold transformer, 26 is a second mold transformer, 27 is a rear side plate, 28 is a support tool, 29 is Circuit breaker, 33 phase advancing capacitor, 34 transformer for electric power supply and demand instrument, 35 operation panel, 36 display operating unit, 37 circuit breaker for wiring, 38 support member, 39, 40 current transformer , 41
Indicates a ceiling plate.

Claims (1)

[Claims] 1. A power receiving device including a molded transformer and required devices such as a current transformer and a circuit breaker,
A power receiving device, characterized in that the right and left side plates and front and rear side plates of a box covering the required equipment are connected and fixed to the molded transformer, and the required equipment is arranged and fixed in the box.