JPH04137407U - Simple closed type switchboard - Google Patents

Abstract

(57) [Summary] [Purpose] Enables wire connection and removal work from the front side, enables visual inspection of circuit breakers through the transparent protection plate, reduces the depth of the distribution box, and facilitates work and removal work. Aim to improve ease of maintenance. [Structure] A part of the front of the distribution box 1 is equipped with instruments and an instrument door 11 that opens and closes from left to right.
On the other part of the front of the distribution box 1, the wiring breakers MCB are installed horizontally with only the operation handle H of the wiring breaker MCB protruding from the front of the distribution box 1 and are arranged in a vertical line. A transparent protection plate 12 is attached to cover the charging exposed portion of the MCB.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea makes it possible to connect and remove electric wires from the front side, and allows wires to be connected and removed through the transparent protection plate. This enables visual inspection of circuit breakers, reduces the depth of distribution boxes, and facilitates operation. This relates to a simple closed type switchboard that is designed to improve ease of operation and maintenance.

0002

[Conventional technology]

There is a conventional closed type switchboard as shown in FIG. That is, distribution box 1 A front door 2 that opens and closes from left to right is attached to the entire front surface. Open front door 2 Then, the low voltage switchboard 3 is exposed. The low voltage switchboard 3 is equipped with instruments, and the low voltage switchboard Only the operation handle H of the wiring breaker MCB can be seen through the window 3A drilled in 3. It protrudes from the front of the low voltage switchboard 3. And the wiring breaker MCB is mounted on the mounting plate 4. is fixed. Depending on the type of circuit breaker MCB, the low voltage distribution board 3. Some are directly fixed using metal fittings. In this case, mounting plate 4 is omitted. has been done. Measurements and operation of the wiring breaker MCB are performed with the front door 2 open. Ru.

0003

[Problem that the idea aims to solve]

In the conventional technology, the low-voltage switchboard 3 charges the wiring breaker MCB. The exposed power supply side and load side terminals are hidden to prevent electric shock accidents. deer However, since the circuit breaker MCB is placed on the back side of the low voltage distribution board 3, The wire connection work to the wiring breaker MCB must be done from the back of the low voltage switchboard 3. It won't happen. Therefore, a space is required for wire connection work, and the depth of the distribution box 1 is must be made larger. In addition, after receiving power, supply power to the preliminary wiring breaker MCB. For safety reasons, please do not connect wires or remove wires from the wiring breaker MCB. Must be done during power outage. Furthermore, the wire connection work on the back side of the low-voltage switchboard 3 Because the company cannot see the wiring breaker MCB, due to a misunderstanding, the wiring breaker There is a high risk of incorrect work on the circuit breaker MCB. Furthermore, the power supply side and load side terminals are Since it is hidden, it is not easy to visually check or inspect the looseness of the tightening bolts. There is a problem. Furthermore, the front door must be opened for measurement and operation of the wiring breaker MCB. 2, the operation is troublesome.

0004 This invention was made with the purpose of solving the problems of the conventional technology. .

[0005]

[Means to solve the problem]

The means for solving the above problems will be explained below using FIGS. 1 to 3 corresponding to the examples. explain. This idea is based on the fact that instruments are installed on a part of the front of the distribution box 1. An instrument door 11 that can be opened and closed from left to right is installed on both sides, and a wiring door is installed on the other part of the front of the distribution box 1. Only the operating handle H of the circuit breaker MCB should protrude from the front of the distribution box 1 to install the wiring The circuit breakers MCB are installed horizontally and arranged in a vertical line, and the wiring circuit breakers MCB are filled. A transparent protection plate 12 is attached to shield the exposed portion.

[0006]

[Effect]

In the device configured in this way, when the transparent protection plate 12 is removed, the electric wires can be connected. Connection/removal work can be done while looking at the wiring breaker MCB from the front. The wiring breaker MCB can be visually inspected through the bright protection plate 12, and the instrument door 11 The wiring circuit breaker MCB can be directly operated without opening or closing the circuit breaker.

[0007]

【Example】

1 to 3 are diagrams showing an embodiment of this invention. In Figures 1 to 3, 11 is the total 12 is a transparent protection plate, and MCB is a circuit breaker. In addition, Figures 1 to 3 In this case, the side plate is omitted.

[0008] The instrument door 11 is equipped with instruments and is also a part of the front of the distribution box 1. It is attached and opens and closes to the left and right. Opening and closing left and right means replacing instruments etc. from the front side. Also, this is to inspect the inside from the front side. Since the instruments are exposed, Measurement is easy.

[0009] For multiple circuit breakers MCB, the power supply side and load side terminals are placed horizontally on the mounting plate 4. In other words, they are installed horizontally and arranged and fixed in a vertical line. Circuit breaker MCB is , its size differs depending on the current capacity. When there is a difference in current capacity, the current capacity The one with the largest diameter is fixed directly to the mounting plate 4, and the other ones are attached to the thickness adjustment members 4A, 4. It is fixed to the mounting plate 4 via B, and the front surfaces of the wiring breaker MCB are aligned. Tori The attached board 4 has a wiring breaker MCB placed on the other front side of the distribution box 1, and The front of the circuit breaker MCB is slightly back from the front frame member (angle material) 13 of the distribution box 1. They are arranged and fixed in the distribution box 1 so that they are aligned on the surface side. Therefore, for wiring Only the operating handle H of the circuit breaker MCB can be accessed from the front side of the distribution box 1, that is, from the front frame. It protrudes from the member 13. The wiring breaker MCB is exposed, so Operation is easy.

0010 The transparent protection plate 12 is for shielding the exposed charging part of the circuit breaker MCB. It is fixed to the other part of the front of the electric box 1, that is, to the front frame member 13 with screws 14. There is. The transparent protection plate 12 corresponds to the operation handle H of the circuit breaker MCB. The vertical part is missing, and it is divided into two parts, left and right. Divide into upper and lower parts, and divide into 4 parts. , it may be divided into six.

[0011] Transparent polycarbonate is used as the transparent protection plate 12. polycarbonate Since it is light in weight, it can be easily installed and removed by one person. use transparent Therefore, for maintenance purposes, it is possible to see the wiring breaker MCB through the transparent protection plate 12 without removing it. Visual inspection is possible. Polycarbonate has excellent electrical insulation properties, so it should not be used in live parts. There is no need to worry about electrical accidents even if you come into contact with it. It also prevents dust from adhering to it and cannot be washed with water. Be beautiful. Therefore, it is light in weight and easy to clean. In addition Transparent does not only refer to completely transparent, but also includes translucent. It is sufficient that the connecting part of the device MCB can be visually confirmed.

0012 When the transparent protection plate 12 is removed, the wire connection/removal work can be done from the front with the wiring breaker. This can be done while looking at the instrument MCB. Therefore, for wire connection and removal work, This space becomes unnecessary, and the depth of the distribution box 1 can be reduced. In addition, electric wire connection and removal work The work can be carried out even without a power outage, and there are no mistakes such as incorrect wiring, etc. becomes easier.

[0013] The wiring breaker MCB can be visually inspected through the transparent protection plate 12, and the It is possible to directly operate the wiring breaker MCB without opening or closing the door 11. Wear. Therefore, maintenance becomes easier.

[0014]

[Effect of the idea]

As explained above, this idea allows instruments to be mounted on a part of the front of the distribution box. The other part of the front of the distribution box is equipped with an instrument door that opens and closes from left and right. Then, only the operating handle of the wiring breaker should protrude from the front of the distribution box, and the The circuit breakers are installed horizontally and arranged in a vertical line, and the A transparent protection plate is attached to cover the exposed charging part. Therefore, transparent After removing the protective plate, connect and remove the wires while looking at the circuit breaker from the front. The circuit breaker can be visually inspected through the transparent protection plate, and The circuit breaker can be operated directly without opening or closing the instrument door. . Therefore, according to this invention, the depth of the distribution box is reduced, making work and maintenance easier. This has the effect of making it easier.

[Brief explanation of drawings]

FIG. 1 is a partially omitted front view showing an embodiment of this invention.

FIG. 2 is a partially omitted side view showing an embodiment of the invention.

FIG. 3 is a partially omitted plan view showing an embodiment of the invention.

FIG. 4 is a partially omitted plan view showing a conventional technique.

[Explanation of symbols]

1 Distribution box 2 Front door 3 Low voltage distribution board 4 Mounting plate 11 Instrument door 12 Transparent protection plate MCB wiring breaker

──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location 7028-5G H02B 1/10 Z

Claims (1)

[Scope of utility model registration request] Claim 1: A part of the front face of the power distribution box is equipped with an instrument door that opens and closes from left to right, in which instruments are mounted, and an operating handle for a wiring breaker is mounted on the other part of the front face of the power distribution box. A simple closed type, in which the wiring breakers are horizontally mounted and arranged vertically in a single line with the wiring breakers protruding from the front of the distribution box, and a transparent protection plate is attached to shield the charging exposed part of the wiring breakers. switchboard