JPH1084608A - Switchgear - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make it possible to easily and automatically connect each device of a switchgear so as to save labor and efficiency in manufacturing and assembling work. A bus (16a) for transmitting and receiving a current between circuit breaker blocks (2a, 2b, 2c) that can enter and exit circuit breakers (4a, 4b, 4c) having main circuit conductors (11a, 11b, 11c) and switch gears arranged in a row. , 16b are accommodated in the busbar blocks 3a, 3b, and a connection cable 14 to an external device.
Cable block 13 in which a, 14b, and 14c are stored
And a plurality of these blocks are combined to constitute a circuit breaker block and a bus line block.
The automatic connection recess 1 is provided on one of the main circuit conductors so that the connection portions of the main circuit conductors fit together when the circuit breaker is inserted into the circuit breaker block.
2 and the other end is provided with an automatic connection projection 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear used for power distribution equipment for supplying electric power.

[0002]

2. Description of the Related Art As this type of switchgear, there is a switchgear three-stage switchgear in which three circuit breakers are combined as shown in FIG. In this apparatus, conventionally, the inside of a casing 101 is provided with circuit breaker rooms 101a, 101b, 101c,
2a and 102b and the cable chamber 103 are partitioned by a thin plate 104.

The bus 100a of the bus chamber 102a and the bus 100b of the bus chamber 102b are connected to the buses 100a, 100a.
00b, and main circuit conductors 105a, 105b, 1 arranged in the vertical direction.
05c and 105d are connected by bolts or the like. on the other hand,
Circuit breakers 106a, 106b, and 106c can freely enter and exit the circuit breaker chambers 101a, 101b, and 101c, respectively. The circuit breakers 106a, 106b, 106c
Are arranged on the lower pole side of the circuit breaker bodies 107a, 107b, 107c and the cables 108a, 108 of the cable chamber 103 arranged on the lower pole side of the circuit breaker bodies 107a, 107b, 107c.
b, 108c, and cable connection portions 111a, 111b, 111c connected via cable connection terminal conductors 109a, 109b, 109c for connection with bolts or the like, and the main circuit conductors 105a, 105b, 105c, 105.
d and main circuit conductor connection portions 112a, 1 connected by bolts or the like
12b and 112c.

When assembling such a switchgear, the bus 100a and the busbar 102b of the busbar 102a
Of the main circuit conductors 105a, 105b, 10
5c, 105d are connected by bolts or the like, and then the circuit breaker main bodies 107a, 107b, 107c are connected to the respective circuit breaker chambers 101.
a, 101b, 101c and slide.

[0005] Each of the circuit breakers 106a, 106b, 1
06c cable connection parts 111a, 111b, 111c
To the cables 108a, 108b, 1 in the cable chamber 103.
08c to the cable connection terminal conductors 109a, 109b, 1
09c with bolts or the like, and connect the main circuit conductor connection portions 112a, 112b, 112c to the main circuit conductor 1
05a, 105b, 105c, 105d are connected with bolts or the like. Thus, the equipment in each room is electrically connected.

[0006]

However, in such a switchgear, the equipment in each room of the switchgear must be connected by bolts or the like, and most of the manufacturing and assembling methods are hand-operated in the panel. There is a problem that the work is performed, which is a barrier to labor saving and automation.

Therefore, the present invention is to provide a switchgear which can easily and automatically connect each device of the switchgear, thereby saving labor and efficiency of manufacturing and assembling work. Things.

[0008]

According to a first aspect of the present invention, a current is transmitted and received between a circuit breaker block which can enter and exit a circuit breaker having a main circuit conductor, and a switchgear of each circuit breaker arranged in a row. It is divided into a bus block in which a bus is stored and a cable block in which a connection cable to an external device is stored, and a plurality of these blocks are combined and configured, and stored in the breaker block and the bus block. With respect to the connection part of each main circuit conductor to another device, a recess is provided in one connection part so that the connection part of each main circuit conductor fits each other when the breaker is inserted into the breaker block, and the other part is provided. The connecting portion is provided with a convex portion.

According to a second aspect of the present invention, current is transmitted and received between a circuit breaker block capable of entering and exiting a circuit breaker having a main circuit conductor, an auxiliary device block allowing auxiliary equipment to enter and exit, and a switchgear arranged in a row. The bus block to be performed is divided into a bus block in which a bus is stored and a cable block in which a connection cable to an external device is stored, and a plurality of these blocks are combined and configured, and a circuit breaker block, an auxiliary device block, and a bus block. The connection part of each main circuit conductor housed in the connection part to each device has a concave part in one connection part so that the connection part of each main circuit conductor fits together when the breaker is inserted into the breaker block. And a convex portion is provided on the other connecting portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment in which the present invention is applied to a three-stage switchgear with three circuit breakers combined will be described with reference to FIGS. 1 to 3. FIG. . FIG. 1 is a side view showing the configuration of a circuit breaker three-stage switchgear according to the present embodiment. This breaker 3
The stacking switchgear is provided on a front rack 1 with circuit breaker blocks 2a, 2 divided into three parts, an upper part, an intermediate part, and a lower part.
b, 2c and busbar blocks 3a, 3b, and a cable block 13 is combined behind the rack 1. Each of the above circuit breaker blocks 2a, 2b, 2c
, Circuit breakers 4a, 4b, 4c can be freely moved in and out, respectively.

The circuit breakers 4a, 4b, 4c inserted into each of the circuit breaker blocks 2a, 2b, 2c are provided with a circuit breaker main body 5.
a, 5b, 5c and multifunctional main circuit disconnecting portions 7a, 7b, 7c having cable connecting portions 6a, 6b, 6c disposed on the lower pole side of the circuit breaker main bodies 5a, 5b, 5c. Be composed.

Further, the circuit breaker blocks 2a, 2b,
Among the circuit breakers 2c, the circuit breakers 4a, 4c inserted into the upper circuit breaker block 2a and the lower circuit breaker block 2c include circuit breaker units 8a, 8c on the multi-function main circuit disconnecting portions 7a, 7c side. The circuit breaker units 8a and 8c are connected to the upper poles of the circuit breaker main bodies 5a and 5c, respectively, and have main circuit conductors 1 having automatic connection protrusions 9a, 9b and 9c, 9d at their ends.
1a and 11c are mounted.

The circuit breaker 4b inserted into the intermediate circuit breaker block 2b has a circuit breaker unit 8b on the multifunctional main circuit disconnecting section 7b side. The circuit breaker unit 8b is connected to the upper pole of the circuit breaker body 6b,
A main circuit conductor 11b having an end 12c is mounted.

The cable block 13 has cables 14a, 14b and 14c. This cable 14
a, 14b, and 14c respectively include circuit breaker blocks 2
a, 2b, 2c are provided with recesses 15a, 15b, 15c, and each of the circuit breakers 4 is provided in the recesses 15a, 15b, 15c.
a, 4b, 4c multifunctional main circuit disconnecting parts 7a, 7b, 7c
Are inserted and connected to supply power to external devices.

A bus block 3a is provided further above the upper circuit breaker block 2a, and a bus block 3b is provided further below the lower circuit breaker block 2c. The bus blocks 3a and 3b are connected to the bus 1
6a, 16b and main circuit conductors 11d. 11e.
This main circuit conductor 11d. 11e has automatic connection concave portions 12a, 12d at one end thereof, and has busbars 16a, 1
6b.

The self-connecting projections 9a, 9b, 9c, 9d of the circuit breaker units 8a, 8c protrude rearward as shown in FIG.
a, 3b, automatic connecting recesses 12a,
12d, 12b, and 12c are the above-mentioned automatic connection projections 9a, 9
b, 9c and 9d can be inserted. By inserting the circuit breakers 4a, 4b, 4c into each of the circuit breaker blocks 2a, 2b, 2c, the automatic connection protrusions 9a, 9b, 9c,
9d are automatic connection concave portions 12a, 12d, 12b, respectively.
12c is automatically inserted and electrically connected.

In this embodiment having such a configuration,
When assembling a three-stage switchgear, the breaker blocks 2a, 2b, 2c and the busbar blocks 3a, 3
The b block is fitted into the rack 1. Then, the circuit breakers 4a, 4b, 4c are inserted into the respective circuit breaker blocks 2a, 2b, 2c.

Then, the automatic connecting projection 9a of the circuit breaker 4a,
9b are automatic connection recesses 12 of the busbar block 3a, respectively.
a, It is automatically inserted into the automatic connection recess 12b of the circuit breaker 4b. Thereby, the circuit breaker block 2a is connected to the busbar block 3a and the circuit breaker block 2b and the automatic connecting portions 9a and 12b.
a and the automatic connection portions 9b and 12b.

Further, the automatic connection projections 9c, 9 of the circuit breaker 4c are provided.
d is automatically inserted into the automatic connection recess 12c of the circuit breaker 4b and the automatic connection recess 12d of the bus bar block 3b, respectively. As a result, the circuit breaker block 2c is connected to the circuit breaker block 2b and the busbar block 3b and the automatic connecting portions 9c and 12c.
And are electrically connected via the automatic connection portions 9d and 12d.

Subsequently, a cable block 13 is combined with the back of the rack 1 to connect the cables 14a, 14b, 1
The circuit breakers 4a, 4b are provided in the recesses 15a, 15b, 15c of FIG.
Insert the multifunctional main circuit disconnecting parts 7a, 7b, 7c of b, 4c. Thus, the circuit breaker three-stage switchgear 1 is completed. In addition, the automatic connection parts 9 and 12 are provided with the automatic connection convex part 9,
Either one of the automatic connection concave portions 12 is slid and connected, so that electricity can be supplied.

As described above, the main circuit conductors 11 of the blocks 2 and 3 are automatically connected by the automatic connecting portions 9 and 12 to form a switchgear, so that the efficiency of the assembling operation can be improved. In addition, since it has a block configuration, the degree of freedom in the configuration of the device can be improved, and the manufacturing and assembling work for each block can be performed, and the efficiency of the assembling work can be further improved.

In the present embodiment, the automatic connection portions 9 and 12 have been described as having a flat shape.
However, the present invention is not limited to this. As shown in FIG. 3, the automatic connection concave portion 12 is formed in a cylindrical shape having a cut groove formed downward, and the automatic connection convex portion 9 is formed in the automatic connection concave portion 12.
It may be formed in a rod shape or a cylindrical shape that can be fitted into the device. Even in this case, the same effect as in the present embodiment can be obtained.

Next, a second embodiment in which the present invention is applied to a switchgear in which a circuit breaker is combined with an auxiliary device such as an instrument transformer or a lightning arrester will be described with reference to FIG. In the present embodiment, the same portions as those in the above embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 4 is a side view showing the configuration of the switchgear according to the present embodiment. The difference from the above embodiment is that among the circuit breaker blocks connected to the rack 1, the intermediate circuit breaker blocks 2b and 2b are provided. The point is that the lower circuit breaker block 2c is replaced with an instrument transformer block 21b and an arrester block 21c.

An instrument transformer 22b can be inserted into the instrument transformer block 21b, and an arrester 22c can be inserted into the arrester block 21c. The instrument transformer 22b includes an instrument transformer main body 23b and an instrument transformer unit 24b. The instrument transformer unit 24b is connected to the upper pole side of the instrument transformer main body 23b, and mounts the main circuit conductor 11b having the automatic connection recesses 12b and 12c at its ends.

The arrester block 21c includes an arrester main body 23c and a circuit breaker unit 24c. The circuit breaker unit 24c is connected to the upper pole side of the circuit breaker body 23c,
Main circuit conductor 11 having self-connecting projections 9c and 9d at its ends
c.

When assembling the switchgear in this embodiment, the circuit breaker block 2a, the instrument transformer block 21b, the lightning arrester block 21c, and the bus bar block 3a are fitted into the rack 1. Then, a circuit breaker 4a and an instrument transformer 2 are connected to each of the blocks 2a, 21b and 21c.
2b and the lightning arrester 22c are respectively inserted.

Then, the automatic connection projection 9a of the circuit breaker 4a,
9b are automatic connection recesses 12 of the busbar block 3a, respectively.
a, It is automatically inserted into the automatic connection recess 12b of the instrument transformer 22b. As a result, the circuit breaker block 2a is electrically connected to the bus bar block 3a and the instrument transformer block 21b through the automatic connecting portions 9a and 12a and the automatic connecting portions 9b and 12b.

The self-connecting projection 9c of the lightning arrester 22c is automatically inserted into the self-connecting recess 12c of the instrument transformer 22b. As a result, the lightning arrester block 21c is electrically connected to the instrument transformer block 21b through the automatic connecting portions 9c and 12c.

Subsequently, the cable block 13 is combined with the rear surface of the rack 1 to form the recess 15a of the cable 14a.
Of the circuit breaker 2a is inserted into the circuit breaker 7a. Thus, the switchgear in the present embodiment is completed. Note that, similarly to the above-described embodiment, the automatic connection portion is connected by sliding movement of one of the automatic connection protrusion 9 and the automatic connection recess 12, and thus can be energized.

Thus, the main circuit conductor of each block is:
Since the switchgears are automatically connected by the automatic connection portions 9 and 12, the efficiency of the assembling work can be improved as in the above-described embodiment, and the device configuration can be improved because of the block configuration. The degree of freedom can be improved.

In the present embodiment, similar to the above-described embodiment, the automatic connection portions 9 and 12 have been described as having a flat plate shape. However, the present invention is not limited to this. As shown in FIG. 5, the automatic connection concave portion 12 is formed in a cylindrical shape, and the automatic connection convex portion 9 is formed in the automatic connection concave portion 1.
It may be formed in a rod shape or a cylindrical shape that can be fitted into the second. Even in this case, the same effect as in the present embodiment can be obtained.

Further, in the first and second embodiments, the case where the automatic connection convex portion 9 or the automatic connection concave portion 12 is provided at both ends of each device has been described, but it is not necessarily limited to this. Instead, one end may be the automatic connection protrusion 9 and the other end may be the automatic connection recess 12.

[0034]

As described above in detail, according to the present invention, each device of the switchgear can be connected easily and automatically, and therefore, labor and efficiency of manufacturing and assembling work can be reduced. It is possible to provide a switch gear that can be used.

[Brief description of the drawings]

FIG. 1 is a side view showing a circuit breaker three-stage switchgear according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the configuration of the automatic connection unit shown in FIG.

FIG. 3 is a plan view showing a modification of the automatic connection unit shown in FIG. 1;

FIG. 4 is a side view showing a switchgear according to a second embodiment of the present invention.

FIG. 5 is a side view showing a conventional switchgear.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rack 2a, 2b, 2c ... Circuit breaker block 3a, 3b ... Bus block 4a, 4b, 4c ... Circuit breaker 9a, 9b, 9c, 9d ... Automatic connection convex part 11a, 11b, 11c, 11d ... Main circuit conductor 12a , 12b, 12c, 12d ... automatic connection recess 13 ... cable block 14a, 14b, 14c ... connection cable 16a, 16b ... bus bar 21b ... instrument transformer block (auxiliary equipment block) 21c ... lightning arrester block (auxiliary equipment block) 22b ... Instrument transformer (auxiliary equipment) 22c ... lightning arrester (auxiliary equipment)

Claims (2)

[Claims] 1. A circuit breaker block which allows a circuit breaker having a main circuit conductor to enter and exit, a bus block in which a bus for transmitting and receiving a current between switchgears arranged in a row are housed, and a connection cable to an external device. Divided into a cable block to be housed, and configured by combining these multiple blocks, for the connection part of each main circuit conductor housed in the circuit breaker block and the bus block to other devices, When the breaker block is inserted into the circuit breaker block, a connection portion of each main circuit conductor is fitted to each other, a concave portion is provided in one connection portion, and a convex portion is provided in the other connection portion. Switchgear to do. 2. A circuit breaker block that allows a circuit breaker having a main circuit conductor to enter and exit, an auxiliary device block that allows auxiliary equipment to enter and exit, and a bus that transmits and receives current between switch gears arranged in a row. The bus block and a cable block in which a connection cable to an external device is stored are divided into a plurality of blocks, and the breaker block, the auxiliary device block, and the bus are stored in the bus block. A connection portion of each main circuit conductor to each device is provided with a recess in one connection portion so that the connection portions of the main circuit conductors fit together when the breaker is inserted into the breaker block, A switchgear characterized in that a convex portion is provided on the other connecting portion.